Sediment drift from Glomma river outlet

from datetime import timedelta, datetime
from opendrift.models.sedimentdrift import SedimentDrift

o = SedimentDrift(loglevel=20)  # 0 for debug output

if False:  # Using constant south-westwards current and wind
    o.set_config('environment:fallback:x_sea_water_velocity', -.05)
    o.set_config('environment:fallback:y_sea_water_velocity', -.1)
    o.set_config('environment:fallback:y_wind', -6)
    o.set_config('environment:fallback:x_wind', -2)
    o.set_config('environment:fallback:sea_floor_depth_below_sea_level', 100)  # 100m depth
else:  # Using live data from Thredds
    o.add_readers_from_list([
        'https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be'])

07:27:43 INFO    opendrift:513: OpenDriftSimulation initialised (version 1.14.2 / v1.14.2-90-g1dd1995)

Adding some diffusion

o.set_config('drift:current_uncertainty', .2)
o.set_config('drift:wind_uncertainty', 2)
o.set_config('vertical_mixing:diffusivitymodel', 'windspeed_Large1994')
#o.set_config('vertical_mixing:diffusivitymodel', 'environment')

Source of sediments at Glomma river outlet

lat=59.169194
lon=10.962920
o.seed_elements(lon=lon, lat=lat, number=10000,
                time=[datetime.now(), datetime.now()+timedelta(hours=48)],
                terminal_velocity=-.001)  # 1 mm/s settling speed

o.run(time_step=600, time_step_output=1800, duration=timedelta(hours=36))

07:27:43 INFO    opendrift.models.basemodel.environment:206: Adding a global landmask from GSHHG
07:27:47 INFO    opendrift.models.basemodel.environment:229: Fallback values will be used for the following variables which have no readers:
07:27:47 INFO    opendrift.models.basemodel.environment:232:    x_sea_water_velocity: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    y_sea_water_velocity: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    sea_surface_height: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    upward_sea_water_velocity: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    x_wind: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    y_wind: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    sea_surface_wave_stokes_drift_x_velocity: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    sea_surface_wave_stokes_drift_y_velocity: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    sea_surface_wave_period_at_variance_spectral_density_maximum: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    ocean_vertical_diffusivity: 0.020000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    ocean_mixed_layer_thickness: 50.000000
07:27:47 INFO    opendrift.models.basemodel.environment:232:    sea_floor_depth_below_sea_level: 10000.000000
07:27:47 INFO    opendrift:1743: Storing previous values of element property lon because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
07:27:47 INFO    opendrift:1743: Storing previous values of element property lat because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
07:27:47 INFO    opendrift:899: Using existing reader for land_binary_mask
07:27:47 INFO    opendrift:928: All points are in ocean
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07:27:47 INFO    opendrift.readers:61: Opening file with xr.open_dataset
07:27:49 INFO    opendrift.readers.reader_netCDF_CF_generic:332: Detected dimensions: {'x': 'X', 'y': 'Y', 'z': 'depth', 'time': 'time'}
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07:28:28 INFO    opendrift:2035: 2025-07-18 08:47:43.798407 - step 153 of 216 - 5312 active elements (0 deactivated)
07:28:28 INFO    opendrift:2035: 2025-07-18 08:57:43.798407 - step 154 of 216 - 5347 active elements (0 deactivated)
07:28:28 INFO    opendrift:2035: 2025-07-18 09:07:43.798407 - step 155 of 216 - 5382 active elements (0 deactivated)
07:28:29 INFO    opendrift:2035: 2025-07-18 09:17:43.798407 - step 156 of 216 - 5417 active elements (0 deactivated)
07:28:30 INFO    opendrift:2035: 2025-07-18 09:27:43.798407 - step 157 of 216 - 5451 active elements (0 deactivated)
07:28:30 INFO    opendrift:2035: 2025-07-18 09:37:43.798407 - step 158 of 216 - 5486 active elements (0 deactivated)
07:28:30 INFO    opendrift:2035: 2025-07-18 09:47:43.798407 - step 159 of 216 - 5521 active elements (0 deactivated)
07:28:30 INFO    opendrift:2035: 2025-07-18 09:57:43.798407 - step 160 of 216 - 5556 active elements (0 deactivated)
07:28:30 INFO    opendrift:2035: 2025-07-18 10:07:43.798407 - step 161 of 216 - 5590 active elements (0 deactivated)
07:28:31 INFO    opendrift:2035: 2025-07-18 10:17:43.798407 - step 162 of 216 - 5625 active elements (0 deactivated)
07:28:32 INFO    opendrift:2035: 2025-07-18 10:27:43.798407 - step 163 of 216 - 5660 active elements (0 deactivated)
07:28:32 INFO    opendrift:2035: 2025-07-18 10:37:43.798407 - step 164 of 216 - 5694 active elements (0 deactivated)
07:28:32 INFO    opendrift:2035: 2025-07-18 10:47:43.798407 - step 165 of 216 - 5729 active elements (0 deactivated)
07:28:32 INFO    opendrift:2035: 2025-07-18 10:57:43.798407 - step 166 of 216 - 5764 active elements (0 deactivated)
07:28:32 INFO    opendrift:2035: 2025-07-18 11:07:43.798407 - step 167 of 216 - 5799 active elements (0 deactivated)
07:28:33 INFO    opendrift:2035: 2025-07-18 11:17:43.798407 - step 168 of 216 - 5833 active elements (0 deactivated)
07:28:33 INFO    opendrift:2035: 2025-07-18 11:27:43.798407 - step 169 of 216 - 5868 active elements (0 deactivated)
07:28:34 INFO    opendrift:2035: 2025-07-18 11:37:43.798407 - step 170 of 216 - 5903 active elements (0 deactivated)
07:28:34 INFO    opendrift:2035: 2025-07-18 11:47:43.798407 - step 171 of 216 - 5937 active elements (0 deactivated)
07:28:34 INFO    opendrift:2035: 2025-07-18 11:57:43.798407 - step 172 of 216 - 5972 active elements (0 deactivated)
07:28:34 INFO    opendrift:2035: 2025-07-18 12:07:43.798407 - step 173 of 216 - 6007 active elements (0 deactivated)
07:28:35 INFO    opendrift:2035: 2025-07-18 12:17:43.798407 - step 174 of 216 - 6042 active elements (0 deactivated)
07:28:35 INFO    opendrift:2035: 2025-07-18 12:27:43.798407 - step 175 of 216 - 6076 active elements (0 deactivated)
07:28:36 INFO    opendrift:2035: 2025-07-18 12:37:43.798407 - step 176 of 216 - 6111 active elements (0 deactivated)
07:28:36 INFO    opendrift:2035: 2025-07-18 12:47:43.798407 - step 177 of 216 - 6146 active elements (0 deactivated)
07:28:36 INFO    opendrift:2035: 2025-07-18 12:57:43.798407 - step 178 of 216 - 6180 active elements (0 deactivated)
07:28:36 INFO    opendrift:2035: 2025-07-18 13:07:43.798407 - step 179 of 216 - 6215 active elements (0 deactivated)
07:28:37 INFO    opendrift:2035: 2025-07-18 13:17:43.798407 - step 180 of 216 - 6250 active elements (0 deactivated)
07:28:37 INFO    opendrift:2035: 2025-07-18 13:27:43.798407 - step 181 of 216 - 6285 active elements (0 deactivated)
07:28:38 INFO    opendrift:2035: 2025-07-18 13:37:43.798407 - step 182 of 216 - 6319 active elements (0 deactivated)
07:28:38 INFO    opendrift:2035: 2025-07-18 13:47:43.798407 - step 183 of 216 - 6354 active elements (0 deactivated)
07:28:38 INFO    opendrift:2035: 2025-07-18 13:57:43.798407 - step 184 of 216 - 6389 active elements (0 deactivated)
07:28:38 INFO    opendrift:2035: 2025-07-18 14:07:43.798407 - step 185 of 216 - 6423 active elements (0 deactivated)
07:28:39 INFO    opendrift:2035: 2025-07-18 14:17:43.798407 - step 186 of 216 - 6458 active elements (0 deactivated)
07:28:39 INFO    opendrift:2035: 2025-07-18 14:27:43.798407 - step 187 of 216 - 6493 active elements (0 deactivated)
07:28:40 INFO    opendrift:2035: 2025-07-18 14:37:43.798407 - step 188 of 216 - 6528 active elements (0 deactivated)
07:28:40 INFO    opendrift:2035: 2025-07-18 14:47:43.798407 - step 189 of 216 - 6562 active elements (0 deactivated)
07:28:40 INFO    opendrift:2035: 2025-07-18 14:57:43.798407 - step 190 of 216 - 6597 active elements (0 deactivated)
07:28:40 INFO    opendrift:2035: 2025-07-18 15:07:43.798407 - step 191 of 216 - 6632 active elements (0 deactivated)
07:28:41 INFO    opendrift:2035: 2025-07-18 15:17:43.798407 - step 192 of 216 - 6667 active elements (0 deactivated)
07:28:41 INFO    opendrift:2035: 2025-07-18 15:27:43.798407 - step 193 of 216 - 6701 active elements (0 deactivated)
07:28:42 INFO    opendrift:2035: 2025-07-18 15:37:43.798407 - step 194 of 216 - 6736 active elements (0 deactivated)
07:28:42 INFO    opendrift:2035: 2025-07-18 15:47:43.798407 - step 195 of 216 - 6771 active elements (0 deactivated)
07:28:42 INFO    opendrift:2035: 2025-07-18 15:57:43.798407 - step 196 of 216 - 6805 active elements (0 deactivated)
07:28:42 INFO    opendrift:2035: 2025-07-18 16:07:43.798407 - step 197 of 216 - 6840 active elements (0 deactivated)
07:28:43 INFO    opendrift:2035: 2025-07-18 16:17:43.798407 - step 198 of 216 - 6875 active elements (0 deactivated)
07:28:43 INFO    opendrift:2035: 2025-07-18 16:27:43.798407 - step 199 of 216 - 6910 active elements (0 deactivated)
07:28:44 INFO    opendrift:2035: 2025-07-18 16:37:43.798407 - step 200 of 216 - 6944 active elements (0 deactivated)
07:28:44 INFO    opendrift:2035: 2025-07-18 16:47:43.798407 - step 201 of 216 - 6979 active elements (0 deactivated)
07:28:44 INFO    opendrift:2035: 2025-07-18 16:57:43.798407 - step 202 of 216 - 7014 active elements (0 deactivated)
07:28:44 INFO    opendrift:2035: 2025-07-18 17:07:43.798407 - step 203 of 216 - 7048 active elements (0 deactivated)
07:28:45 INFO    opendrift:2035: 2025-07-18 17:17:43.798407 - step 204 of 216 - 7083 active elements (0 deactivated)
07:28:45 INFO    opendrift:2035: 2025-07-18 17:27:43.798407 - step 205 of 216 - 7118 active elements (0 deactivated)
07:28:46 INFO    opendrift:2035: 2025-07-18 17:37:43.798407 - step 206 of 216 - 7153 active elements (0 deactivated)
07:28:46 INFO    opendrift:2035: 2025-07-18 17:47:43.798407 - step 207 of 216 - 7187 active elements (0 deactivated)
07:28:46 INFO    opendrift:2035: 2025-07-18 17:57:43.798407 - step 208 of 216 - 7222 active elements (0 deactivated)
07:28:46 INFO    opendrift:2035: 2025-07-18 18:07:43.798407 - step 209 of 216 - 7257 active elements (0 deactivated)
07:28:47 INFO    opendrift:2035: 2025-07-18 18:17:43.798407 - step 210 of 216 - 7291 active elements (0 deactivated)
07:28:47 INFO    opendrift:2035: 2025-07-18 18:27:43.798407 - step 211 of 216 - 7326 active elements (0 deactivated)
07:28:48 INFO    opendrift:2035: 2025-07-18 18:37:43.798407 - step 212 of 216 - 7361 active elements (0 deactivated)
07:28:48 INFO    opendrift:2035: 2025-07-18 18:47:43.798407 - step 213 of 216 - 7396 active elements (0 deactivated)
07:28:48 INFO    opendrift:2035: 2025-07-18 18:57:43.798407 - step 214 of 216 - 7430 active elements (0 deactivated)
07:28:48 INFO    opendrift:2035: 2025-07-18 19:07:43.798407 - step 215 of 216 - 7465 active elements (0 deactivated)
07:28:49 INFO    opendrift:2035: 2025-07-18 19:17:43.798407 - step 216 of 216 - 7500 active elements (0 deactivated)
07:28:49 INFO    opendrift:2142: Removing 2500 unseeded elements

<xarray.Dataset> Size: 55MB
Dimensions:                                                                              (
                                                                                          trajectory: 7500,
                                                                                          time: 73)
Coordinates:
  * trajectory                                                                           (trajectory) int64 60kB ...
  * time                                                                                 (time) datetime64[ns] 584B ...
Data variables: (12/25)
    status                                                                               (trajectory, time) float32 2MB ...
    moving                                                                               (trajectory, time) float32 2MB ...
    age_seconds                                                                          (trajectory, time) float32 2MB ...
    origin_marker                                                                        (trajectory, time) float32 2MB ...
    lon                                                                                  (trajectory, time) float32 2MB ...
    lat                                                                                  (trajectory, time) float32 2MB ...
    ...                                                                                   ...
    sea_surface_wave_period_at_variance_spectral_density_maximum                         (trajectory, time) float32 2MB ...
    sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment  (trajectory, time) float32 2MB ...
    land_binary_mask                                                                     (trajectory, time) float32 2MB ...
    ocean_vertical_diffusivity                                                           (trajectory, time) float32 2MB ...
    ocean_mixed_layer_thickness                                                          (trajectory, time) float32 2MB ...
    sea_floor_depth_below_sea_level                                                      (trajectory, time) float32 2MB ...
Attributes: (12/126)
    Conventions:                                                             ...
    standard_name_vocabulary:                                                ...
    featureType:                                                             ...
    title:                                                                   ...
    summary:                                                                 ...
    keywords:                                                                ...
    ...                                                                                                               ...
    geospatial_lon_units:                                                    ...
    geospatial_lon_resolution:                                               ...
    runtime:                                                                 ...
    geospatial_vertical_min:                                                 ...
    geospatial_vertical_max:                                                 ...
    geospatial_vertical_positive:                                            ...

xarray.Dataset

• Dimensions:
  • trajectory: 7500
  • time: 73
• Coordinates: (2)
  • trajectory
    (trajectory)
    int64
    0 1 2 3 4 ... 7496 7497 7498 7499

    cf_role :

    trajectory_id

    dtype :

    <class 'numpy.int32'>

    array([   0,    1,    2, ..., 7497, 7498, 7499], shape=(7500,))

  • time
    (time)
    datetime64[ns]
    2025-07-17T07:27:43.798407 ... 2...

    standard_name :

    time

    long_name :

    time

    dtype :

    <class 'numpy.float64'>

    array(['2025-07-17T07:27:43.798407000', '2025-07-17T07:57:43.798407000',
           '2025-07-17T08:27:43.798407000', '2025-07-17T08:57:43.798407000',
           '2025-07-17T09:27:43.798407000', '2025-07-17T09:57:43.798407000',
           '2025-07-17T10:27:43.798407000', '2025-07-17T10:57:43.798407000',
           '2025-07-17T11:27:43.798407000', '2025-07-17T11:57:43.798407000',
           '2025-07-17T12:27:43.798407000', '2025-07-17T12:57:43.798407000',
           '2025-07-17T13:27:43.798407000', '2025-07-17T13:57:43.798407000',
           '2025-07-17T14:27:43.798407000', '2025-07-17T14:57:43.798407000',
           '2025-07-17T15:27:43.798407000', '2025-07-17T15:57:43.798407000',
           '2025-07-17T16:27:43.798407000', '2025-07-17T16:57:43.798407000',
           '2025-07-17T17:27:43.798407000', '2025-07-17T17:57:43.798407000',
           '2025-07-17T18:27:43.798407000', '2025-07-17T18:57:43.798407000',
           '2025-07-17T19:27:43.798407000', '2025-07-17T19:57:43.798407000',
           '2025-07-17T20:27:43.798407000', '2025-07-17T20:57:43.798407000',
           '2025-07-17T21:27:43.798407000', '2025-07-17T21:57:43.798407000',
           '2025-07-17T22:27:43.798407000', '2025-07-17T22:57:43.798407000',
           '2025-07-17T23:27:43.798407000', '2025-07-17T23:57:43.798407000',
           '2025-07-18T00:27:43.798407000', '2025-07-18T00:57:43.798407000',
           '2025-07-18T01:27:43.798407000', '2025-07-18T01:57:43.798407000',
           '2025-07-18T02:27:43.798407000', '2025-07-18T02:57:43.798407000',
           '2025-07-18T03:27:43.798407000', '2025-07-18T03:57:43.798407000',
           '2025-07-18T04:27:43.798407000', '2025-07-18T04:57:43.798407000',
           '2025-07-18T05:27:43.798407000', '2025-07-18T05:57:43.798407000',
           '2025-07-18T06:27:43.798407000', '2025-07-18T06:57:43.798407000',
           '2025-07-18T07:27:43.798407000', '2025-07-18T07:57:43.798407000',
           '2025-07-18T08:27:43.798407000', '2025-07-18T08:57:43.798407000',
           '2025-07-18T09:27:43.798407000', '2025-07-18T09:57:43.798407000',
           '2025-07-18T10:27:43.798407000', '2025-07-18T10:57:43.798407000',
           '2025-07-18T11:27:43.798407000', '2025-07-18T11:57:43.798407000',
           '2025-07-18T12:27:43.798407000', '2025-07-18T12:57:43.798407000',
           '2025-07-18T13:27:43.798407000', '2025-07-18T13:57:43.798407000',
           '2025-07-18T14:27:43.798407000', '2025-07-18T14:57:43.798407000',
           '2025-07-18T15:27:43.798407000', '2025-07-18T15:57:43.798407000',
           '2025-07-18T16:27:43.798407000', '2025-07-18T16:57:43.798407000',
           '2025-07-18T17:27:43.798407000', '2025-07-18T17:57:43.798407000',
           '2025-07-18T18:27:43.798407000', '2025-07-18T18:57:43.798407000',
           '2025-07-18T19:27:43.798407000'], dtype='datetime64[ns]')

• Data variables: (25)
  • status
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    dtype :

    <class 'numpy.int32'>

    valid_range :

    [0 0]

    flag_values :

    [0]

    flag_meanings :

    active

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • moving
    (trajectory, time)
    float32
    1.0 1.0 1.0 1.0 ... nan nan nan 1.0

    dtype :

    <class 'numpy.int32'>

    minval :

    1

    maxval :

    1

    array([[ 1.,  1.,  1., ...,  1.,  1.,  1.],
           [ 1.,  1.,  1., ...,  1.,  1.,  1.],
           [ 1.,  1.,  1., ...,  1.,  1.,  1.],
           ...,
           [nan, nan, nan, ..., nan, nan,  1.],
           [nan, nan, nan, ..., nan, nan,  1.],
           [nan, nan, nan, ..., nan, nan,  1.]],
          shape=(7500, 73), dtype=float32)

  • age_seconds
    (trajectory, time)
    float32
    0.0 1.8e+03 3.6e+03 ... nan 600.0

    dtype :

    <class 'numpy.float32'>

    units :

    s

    minval :

    0.0

    maxval :

    129600.0

    array([[     0.,   1800.,   3600., ..., 126000., 127800., 129600.],
           [     0.,   1800.,   3600., ..., 126000., 127800., 129600.],
           [     0.,   1800.,   3600., ..., 126000., 127800., 129600.],
           ...,
           [    nan,     nan,     nan, ...,     nan,     nan,    600.],
           [    nan,     nan,     nan, ...,     nan,     nan,    600.],
           [    nan,     nan,     nan, ...,     nan,     nan,    600.]],
          shape=(7500, 73), dtype=float32)

  • origin_marker
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    dtype :

    <class 'numpy.int32'>

    unit :

    description :

    An integer kept constant during the simulation. Different values may be used for different seedings, to separate elements during analysis. With GUI, only a single seeding is possible.

    flag_values :

    [0]

    flag_meanings :

    Seed_0

    minval :

    0

    maxval :

    0

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • lon
    (trajectory, time)
    float32
    10.96 10.97 10.97 ... nan nan 10.97

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_east

    standard_name :

    longitude

    long_name :

    longitude

    axis :

    X

    minval :

    10.712631

    maxval :

    11.201621

    array([[10.96292  , 10.9732685, 10.974358 , ..., 10.989948 , 10.98515  ,
            10.988069 ],
           [10.96292  , 10.979289 , 10.992401 , ..., 11.04541  , 11.04871  ,
            11.046069 ],
           [10.96292  , 10.974643 , 10.974643 , ..., 10.91002  , 10.90925  ,
            10.91019  ],
           ...,
           [       nan,        nan,        nan, ...,        nan,        nan,
            10.965977 ],
           [       nan,        nan,        nan, ...,        nan,        nan,
            10.967203 ],
           [       nan,        nan,        nan, ...,        nan,        nan,
            10.967524 ]], shape=(7500, 73), dtype=float32)

  • lat
    (trajectory, time)
    float32
    59.17 59.17 59.17 ... nan nan 59.17

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_north

    standard_name :

    latitude

    long_name :

    latitude

    axis :

    Y

    minval :

    59.002567

    maxval :

    59.219303

    array([[59.169193, 59.168415, 59.169052, ..., 59.050434, 59.050133,
            59.047386],
           [59.169193, 59.169342, 59.161663, ..., 59.124184, 59.12169 ,
            59.116646],
           [59.169193, 59.16706 , 59.16706 , ..., 59.14279 , 59.14358 ,
            59.14478 ],
           ...,
           [      nan,       nan,       nan, ...,       nan,       nan,
            59.16918 ],
           [      nan,       nan,       nan, ...,       nan,       nan,
            59.16914 ],
           [      nan,       nan,       nan, ...,       nan,       nan,
            59.16926 ]], shape=(7500, 73), dtype=float32)

  • z
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    dtype :

    <class 'numpy.float32'>

    units :

    m

    standard_name :

    z

    long_name :

    vertical position

    axis :

    Z

    positive :

    up

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • wind_drift_factor
    (trajectory, time)
    float32
    0.02 0.02 0.02 ... nan nan 0.02

    dtype :

    <class 'numpy.float32'>

    units :

    1

    description :

    Elements at surface are moved with this fraction of the vind vector, in addition to currents and Stokes drift

    minval :

    0.02

    maxval :

    0.02

    array([[0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           ...,
           [ nan,  nan,  nan, ...,  nan,  nan, 0.02],
           [ nan,  nan,  nan, ...,  nan,  nan, 0.02],
           [ nan,  nan,  nan, ...,  nan,  nan, 0.02]],
          shape=(7500, 73), dtype=float32)

  • current_drift_factor
    (trajectory, time)
    float32
    1.0 1.0 1.0 1.0 ... nan nan nan 1.0

    dtype :

    <class 'numpy.float32'>

    units :

    1

    description :

    Elements are moved with this fraction of the current vector, in addition to currents and Stokes drift

    minval :

    1.0

    maxval :

    1.0

    array([[ 1.,  1.,  1., ...,  1.,  1.,  1.],
           [ 1.,  1.,  1., ...,  1.,  1.,  1.],
           [ 1.,  1.,  1., ...,  1.,  1.,  1.],
           ...,
           [nan, nan, nan, ..., nan, nan,  1.],
           [nan, nan, nan, ..., nan, nan,  1.],
           [nan, nan, nan, ..., nan, nan,  1.]],
          shape=(7500, 73), dtype=float32)

  • terminal_velocity
    (trajectory, time)
    float32
    -0.001 -0.001 -0.001 ... nan -0.001

    dtype :

    <class 'numpy.float32'>

    units :

    m/s

    minval :

    -0.001

    maxval :

    -0.001

    array([[-0.001, -0.001, -0.001, ..., -0.001, -0.001, -0.001],
           [-0.001, -0.001, -0.001, ..., -0.001, -0.001, -0.001],
           [-0.001, -0.001, -0.001, ..., -0.001, -0.001, -0.001],
           ...,
           [   nan,    nan,    nan, ...,    nan,    nan, -0.001],
           [   nan,    nan,    nan, ...,    nan,    nan, -0.001],
           [   nan,    nan,    nan, ...,    nan,    nan, -0.001]],
          shape=(7500, 73), dtype=float32)

  • settled
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    dtype :

    <class 'numpy.uint8'>

    units :

    1

    minval :

    0

    maxval :

    0

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • x_sea_water_velocity
    (trajectory, time)
    float32
    0.7462 0.6525 0.1611 ... nan 0.4402

    minval :

    -1.0681553

    maxval :

    1.2835412

    array([[ 0.7461882 ,  0.65253836,  0.16111934, ...,  0.16112787,
             0.04602843,  0.12760165],
           [ 0.4734092 ,  0.5166132 ,  0.73901665, ...,  0.15923603,
            -0.12936349, -0.18148401],
           [ 0.58912534,  0.66008633,  0.45671573, ...,  0.26213163,
             0.11200103,  0.14394897],
           ...,
           [        nan,         nan,         nan, ...,         nan,
                    nan,  0.23975344],
           [        nan,         nan,         nan, ...,         nan,
                    nan,  0.334028  ],
           [        nan,         nan,         nan, ...,         nan,
                    nan,  0.44017437]], shape=(7500, 73), dtype=float32)

  • y_sea_water_velocity
    (trajectory, time)
    float32
    -0.05903 -0.2845 ... nan -0.02643

    minval :

    -1.2744368

    maxval :

    0.9640794

    array([[-0.05903025, -0.28450358,  0.0280882 , ..., -0.00860452,
            -0.35270128, -0.08825444],
           [ 0.15575808, -0.13152269, -0.12815455, ..., -0.38728994,
            -0.11763129, -0.64283943],
           [ 0.15017593, -0.13060349, -0.1882846 , ..., -0.04877142,
             0.10918222, -0.02712008],
           ...,
           [        nan,         nan,         nan, ...,         nan,
                    nan, -0.03288183],
           [        nan,         nan,         nan, ...,         nan,
                    nan, -0.01742092],
           [        nan,         nan,         nan, ...,         nan,
                    nan, -0.02643039]], shape=(7500, 73), dtype=float32)

  • sea_surface_height
    (trajectory, time)
    float32
    -0.1167 -0.1146 ... nan -0.1757

    minval :

    -0.45594376

    maxval :

    -0.050115287

    array([[-0.11674052, -0.11463317, -0.10902818, ..., -0.26182154,
            -0.21511374, -0.18675241],
           [-0.11674052, -0.11467765, -0.10401052, ..., -0.26663205,
            -0.21863204, -0.19011693],
           [-0.11674052, -0.11531142, -0.10901935, ..., -0.26009423,
            -0.21257767, -0.18358704],
           ...,
           [        nan,         nan,         nan, ...,         nan,
                    nan, -0.17573573],
           [        nan,         nan,         nan, ...,         nan,
                    nan, -0.17573573],
           [        nan,         nan,         nan, ...,         nan,
                    nan, -0.17573573]], shape=(7500, 73), dtype=float32)

  • upward_sea_water_velocity
    (trajectory, time)
    float32
    2.559e-06 -2.955e-07 ... 1.635e-05

    minval :

    -5.645544e-05

    maxval :

    3.3821747e-05

    array([[ 2.5592356e-06, -2.9546280e-07, -7.9251358e-06, ...,
             2.4651044e-05,  2.4357392e-05,  2.3684319e-05],
           [ 2.5592356e-06, -3.1339914e-06, -3.4046177e-06, ...,
             2.5788648e-05,  2.1299895e-05,  2.1993790e-05],
           [ 2.5592356e-06, -2.5181771e-07, -4.2071092e-06, ...,
             2.4808271e-05,  2.3478147e-05,  2.4838806e-05],
           ...,
           [           nan,            nan,            nan, ...,
                       nan,            nan,  1.6348456e-05],
           [           nan,            nan,            nan, ...,
                       nan,            nan,  1.6348456e-05],
           [           nan,            nan,            nan, ...,
                       nan,            nan,  1.6348456e-05]],
          shape=(7500, 73), dtype=float32)

  • x_wind
    (trajectory, time)
    float32
    0.03746 -3.676 ... nan -0.06826

    minval :

    -9.971387

    maxval :

    12.917416

    array([[ 0.03746365, -3.6760478 , -2.1360078 , ...,  3.7645092 ,
            -1.2314494 , -0.14523442],
           [-1.1627517 , -3.3407736 , -5.781046  , ...,  2.3803954 ,
             1.2830065 ,  0.9649385 ],
           [ 0.8580839 , -3.7668097 , -0.25019935, ...,  1.8282202 ,
             0.9940381 ,  4.061142  ],
           ...,
           [        nan,         nan,         nan, ...,         nan,
                    nan,  2.5802116 ],
           [        nan,         nan,         nan, ...,         nan,
                    nan,  3.7138062 ],
           [        nan,         nan,         nan, ...,         nan,
                    nan, -0.06825625]], shape=(7500, 73), dtype=float32)

  • y_wind
    (trajectory, time)
    float32
    0.4061 -3.619 -3.652 ... nan 1.925

    minval :

    -10.429235

    maxval :

    11.281348

    array([[ 0.40611917, -3.6186705 , -3.652347  , ...,  1.7916149 ,
             2.9611452 , -0.76821524],
           [-4.308361  , -5.314842  , -4.1910567 , ...,  1.3933887 ,
             0.7862657 , -0.19487289],
           [-4.9760327 , -6.5475903 , -1.5039089 , ...,  1.2603186 ,
            -2.3106713 ,  0.34219375],
           ...,
           [        nan,         nan,         nan, ...,         nan,
                    nan,  1.5485716 ],
           [        nan,         nan,         nan, ...,         nan,
                    nan,  0.38722146],
           [        nan,         nan,         nan, ...,         nan,
                    nan,  1.9253024 ]], shape=(7500, 73), dtype=float32)

  • sea_surface_wave_stokes_drift_x_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • sea_surface_wave_stokes_drift_y_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • sea_surface_wave_period_at_variance_spectral_density_maximum
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment
    (trajectory, time)
    float32
    0.3485 4.408 3.615 ... nan 1.646

    minval :

    0.0018727096

    maxval :

    11.3660755

    array([[0.34849027, 4.4076195 , 3.6153464 , ..., 3.5623753 , 2.7402873 ,
            0.668045  ],
           [3.8130808 , 5.364029  , 6.1012697 , ..., 2.3568234 , 1.2857779 ,
            0.84115756],
           [4.314629  , 6.454494  , 1.3027081 , ..., 1.8973852 , 2.1493483 ,
            3.4824233 ],
           ...,
           [       nan,        nan,        nan, ...,        nan,        nan,
            2.571313  ],
           [       nan,        nan,        nan, ...,        nan,        nan,
            3.1905406 ],
           [       nan,        nan,        nan, ...,        nan,        nan,
            1.6461477 ]], shape=(7500, 73), dtype=float32)

  • land_binary_mask
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan 0.0

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.],
           [nan, nan, nan, ..., nan, nan,  0.]],
          shape=(7500, 73), dtype=float32)

  • ocean_vertical_diffusivity
    (trajectory, time)
    float32
    0.02 0.02 0.02 ... nan nan 0.02

    minval :

    0.02

    maxval :

    0.02

    array([[0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           [0.02, 0.02, 0.02, ..., 0.02, 0.02, 0.02],
           ...,
           [ nan,  nan,  nan, ...,  nan,  nan, 0.02],
           [ nan,  nan,  nan, ...,  nan,  nan, 0.02],
           [ nan,  nan,  nan, ...,  nan,  nan, 0.02]],
          shape=(7500, 73), dtype=float32)

  • ocean_mixed_layer_thickness
    (trajectory, time)
    float32
    50.0 50.0 50.0 ... nan nan 50.0

    minval :

    50.0

    maxval :

    50.0

    array([[50., 50., 50., ..., 50., 50., 50.],
           [50., 50., 50., ..., 50., 50., 50.],
           [50., 50., 50., ..., 50., 50., 50.],
           ...,
           [nan, nan, nan, ..., nan, nan, 50.],
           [nan, nan, nan, ..., nan, nan, 50.],
           [nan, nan, nan, ..., nan, nan, 50.]],
          shape=(7500, 73), dtype=float32)

  • sea_floor_depth_below_sea_level
    (trajectory, time)
    float32
    6.592 6.879 6.69 ... nan nan 6.592

    minval :

    5.0

    maxval :

    112.62804

    array([[ 6.5920897,  6.8794804,  6.69024  , ..., 15.39033  , 19.922665 ,
            22.461058 ],
           [ 6.5920897,  6.6386685,  7.295144 , ..., 12.918623 , 13.026793 ,
            13.146931 ],
           [ 6.5920897,  7.036325 ,  7.138932 , ...,  7.49337  ,  5.       ,
             6.6181364],
           ...,
           [       nan,        nan,        nan, ...,        nan,        nan,
             6.592038 ],
           [       nan,        nan,        nan, ...,        nan,        nan,
             6.592038 ],
           [       nan,        nan,        nan, ...,        nan,        nan,
             6.592038 ]], shape=(7500, 73), dtype=float32)

• Indexes: (2)
  • trajectory
    PandasIndex

    PandasIndex(Index([   0,    1,    2,    3,    4,    5,    6,    7,    8,    9,
           ...
           7490, 7491, 7492, 7493, 7494, 7495, 7496, 7497, 7498, 7499],
          dtype='int64', name='trajectory', length=7500))

  • time
    PandasIndex

    PandasIndex(DatetimeIndex(['2025-07-17 07:27:43.798407', '2025-07-17 07:57:43.798407',
                   '2025-07-17 08:27:43.798407', '2025-07-17 08:57:43.798407',
                   '2025-07-17 09:27:43.798407', '2025-07-17 09:57:43.798407',
                   '2025-07-17 10:27:43.798407', '2025-07-17 10:57:43.798407',
                   '2025-07-17 11:27:43.798407', '2025-07-17 11:57:43.798407',
                   '2025-07-17 12:27:43.798407', '2025-07-17 12:57:43.798407',
                   '2025-07-17 13:27:43.798407', '2025-07-17 13:57:43.798407',
                   '2025-07-17 14:27:43.798407', '2025-07-17 14:57:43.798407',
                   '2025-07-17 15:27:43.798407', '2025-07-17 15:57:43.798407',
                   '2025-07-17 16:27:43.798407', '2025-07-17 16:57:43.798407',
                   '2025-07-17 17:27:43.798407', '2025-07-17 17:57:43.798407',
                   '2025-07-17 18:27:43.798407', '2025-07-17 18:57:43.798407',
                   '2025-07-17 19:27:43.798407', '2025-07-17 19:57:43.798407',
                   '2025-07-17 20:27:43.798407', '2025-07-17 20:57:43.798407',
                   '2025-07-17 21:27:43.798407', '2025-07-17 21:57:43.798407',
                   '2025-07-17 22:27:43.798407', '2025-07-17 22:57:43.798407',
                   '2025-07-17 23:27:43.798407', '2025-07-17 23:57:43.798407',
                   '2025-07-18 00:27:43.798407', '2025-07-18 00:57:43.798407',
                   '2025-07-18 01:27:43.798407', '2025-07-18 01:57:43.798407',
                   '2025-07-18 02:27:43.798407', '2025-07-18 02:57:43.798407',
                   '2025-07-18 03:27:43.798407', '2025-07-18 03:57:43.798407',
                   '2025-07-18 04:27:43.798407', '2025-07-18 04:57:43.798407',
                   '2025-07-18 05:27:43.798407', '2025-07-18 05:57:43.798407',
                   '2025-07-18 06:27:43.798407', '2025-07-18 06:57:43.798407',
                   '2025-07-18 07:27:43.798407', '2025-07-18 07:57:43.798407',
                   '2025-07-18 08:27:43.798407', '2025-07-18 08:57:43.798407',
                   '2025-07-18 09:27:43.798407', '2025-07-18 09:57:43.798407',
                   '2025-07-18 10:27:43.798407', '2025-07-18 10:57:43.798407',
                   '2025-07-18 11:27:43.798407', '2025-07-18 11:57:43.798407',
                   '2025-07-18 12:27:43.798407', '2025-07-18 12:57:43.798407',
                   '2025-07-18 13:27:43.798407', '2025-07-18 13:57:43.798407',
                   '2025-07-18 14:27:43.798407', '2025-07-18 14:57:43.798407',
                   '2025-07-18 15:27:43.798407', '2025-07-18 15:57:43.798407',
                   '2025-07-18 16:27:43.798407', '2025-07-18 16:57:43.798407',
                   '2025-07-18 17:27:43.798407', '2025-07-18 17:57:43.798407',
                   '2025-07-18 18:27:43.798407', '2025-07-18 18:57:43.798407',
                   '2025-07-18 19:27:43.798407'],
                  dtype='datetime64[ns]', name='time', freq='30min'))

• Attributes: (126)

  Conventions :

  CF-1.11, ACDD-1.3

  standard_name_vocabulary :

  CF Standard Name Table v85

  featureType :

  trajectory

  title :

  OpenDrift trajectory simulation

  summary :

  Output from simulation with OpenDrift framework

  keywords :

  trajectory, drift, lagrangian, simulation

  history :

  Created 2025-07-17 07:27:47.870356

  date_created :

  2025-07-17T07:27:47.870378

  source :

  Output from simulation with OpenDrift

  model_url :

  https://github.com/OpenDrift/opendrift

  opendrift_class :

  SedimentDrift

  opendrift_module :

  opendrift.models.sedimentdrift

  readers :

  odict_keys(['LazyReader: https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be', 'global_landmask'])

  time_coverage_start :

  2025-07-17 07:27:43.798407

  time_step_calculation :

  0:10:00

  time_step_output :

  0:30:00

  config_environment:constant:x_sea_water_velocity :

  None

  config_environment:fallback:x_sea_water_velocity :

  0

  config_environment:constant:y_sea_water_velocity :

  None

  config_environment:fallback:y_sea_water_velocity :

  0

  config_environment:constant:sea_surface_height :

  None

  config_environment:fallback:sea_surface_height :

  0

  config_environment:constant:upward_sea_water_velocity :

  None

  config_environment:fallback:upward_sea_water_velocity :

  0

  config_environment:constant:x_wind :

  None

  config_environment:fallback:x_wind :

  0

  config_environment:constant:y_wind :

  None

  config_environment:fallback:y_wind :

  0

  config_environment:constant:sea_surface_wave_stokes_drift_x_velocity :

  None

  config_environment:fallback:sea_surface_wave_stokes_drift_x_velocity :

  0

  config_environment:constant:sea_surface_wave_stokes_drift_y_velocity :

  None

  config_environment:fallback:sea_surface_wave_stokes_drift_y_velocity :

  0

  config_environment:constant:sea_surface_wave_period_at_variance_spectral_density_maximum :

  None

  config_environment:fallback:sea_surface_wave_period_at_variance_spectral_density_maximum :

  0

  config_environment:constant:sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment :

  None

  config_environment:fallback:sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment :

  0

  config_environment:constant:land_binary_mask :

  None

  config_environment:fallback:land_binary_mask :

  None

  config_environment:constant:ocean_vertical_diffusivity :

  None

  config_environment:fallback:ocean_vertical_diffusivity :

  0.02

  config_environment:constant:ocean_mixed_layer_thickness :

  None

  config_environment:fallback:ocean_mixed_layer_thickness :

  50

  config_environment:constant:sea_floor_depth_below_sea_level :

  None

  config_environment:fallback:sea_floor_depth_below_sea_level :

  10000

  config_general:use_auto_landmask :

  True

  config_drift:current_uncertainty :

  0.2

  config_drift:current_uncertainty_uniform :

  0

  config_drift:max_speed :

  2.0

  config_readers:max_number_of_fails :

  1

  config_general:simulation_name :

  config_general:coastline_action :

  previous

  config_general:coastline_approximation_precision :

  0.001

  config_general:time_step_minutes :

  60

  config_general:time_step_output_minutes :

  None

  config_seed:ocean_only :

  True

  config_seed:number :

  1

  config_drift:max_age_seconds :

  None

  config_drift:advection_scheme :

  euler

  config_drift:horizontal_diffusivity :

  0

  config_drift:profiles_depth :

  50

  config_drift:wind_uncertainty :

  2.0

  config_drift:relative_wind :

  False

  config_drift:deactivate_north_of :

  None

  config_drift:deactivate_south_of :

  None

  config_drift:deactivate_east_of :

  None

  config_drift:deactivate_west_of :

  None

  config_seed:origin_marker :

  0

  config_seed:z :

  0

  config_seed:wind_drift_factor :

  0.02

  config_seed:current_drift_factor :

  1

  config_seed:terminal_velocity :

  -0.001

  config_seed:settled :

  0

  config_drift:vertical_advection :

  True

  config_drift:vertical_advection_at_surface :

  False

  config_drift:water_column_stretching :

  False

  config_drift:vertical_advection_correction :

  False

  config_drift:vertical_mixing :

  True

  config_drift:vertical_mixing_at_surface :

  False

  config_vertical_mixing:timestep :

  60

  config_vertical_mixing:diffusivitymodel :

  windspeed_Large1994

  config_vertical_mixing:background_diffusivity :

  1.2e-05

  config_vertical_mixing:TSprofiles :

  False

  config_drift:wind_drift_depth :

  0.1

  config_drift:stokes_drift :

  True

  config_drift:stokes_drift_profile :

  Phillips

  config_drift:use_tabularised_stokes_drift :

  False

  config_drift:tabularised_stokes_drift_fetch :

  25000

  config_general:seafloor_action :

  lift_to_seafloor

  config_drift:truncate_ocean_model_below_m :

  None

  config_seed:seafloor :

  False

  config_vertical_mixing:resuspension_threshold :

  0.2

  opendrift_version :

  1.14.2

  seed_geojson :

  {"features": [], "type": "FeatureCollection"}

  simulation_time :

  2025-07-17 07:27:47.951740

  reader_x_sea_water_velocity :

  ['https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be']

  reader_y_sea_water_velocity :

  ['https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be']

  reader_sea_surface_height :

  ['https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be']

  reader_upward_sea_water_velocity :

  ['https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be']

  reader_x_wind :

  ['https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be']

  reader_y_wind :

  ['https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be']

  reader_sea_surface_wave_stokes_drift_x_velocity :

  0

  reader_sea_surface_wave_stokes_drift_y_velocity :

  0

  reader_sea_surface_wave_period_at_variance_spectral_density_maximum :

  0

  reader_sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment :

  0

  reader_land_binary_mask :

  ['global_landmask']

  reader_ocean_vertical_diffusivity :

  0.02

  reader_ocean_mixed_layer_thickness :

  50

  reader_sea_floor_depth_below_sea_level :

  ['https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be']

  time_coverage_end :

  2025-07-18 19:27:43.798407

  time_coverage_duration :

  P1DT12H0M0S

  time_coverage_resolution :

  P0DT0H10M0S

  performance :

  -------------------- Reader performance: -------------------- global_landmask 0:00:04.6 total 0:00:00.0 preparing 0:00:04.6 reading 0:00:00.0 masking -------------------- https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be 0:00:45.1 total 0:00:00.0 preparing 0:00:42.0 reading 0:00:02.7 interpolation 0:00:00.1 interpolation_time 0:00:03.0 rotating vectors 0:00:00.0 masking -------------------- Performance: 1:06.0 total time 4.0 configuration 0.1 preparing main loop 0.0 moving elements to ocean 1:01.8 main loop 4.9 updating elements 3.8 vertical mixing 0.0 cleaning up --------------------

  geospatial_bounds_crs :

  EPSG:4326

  geospatial_bounds_vertical_crs :

  EPSG:5831

  geospatial_lat_min :

  59.002567

  geospatial_lat_max :

  59.219303

  geospatial_lat_units :

  degrees_north

  geospatial_lat_resolution :

  point

  geospatial_lon_min :

  10.712631

  geospatial_lon_max :

  11.201621

  geospatial_lon_units :

  degrees_east

  geospatial_lon_resolution :

  point

  runtime :

  0:01:06.086731

  geospatial_vertical_min :

  0.0

  geospatial_vertical_max :

  0.0

  geospatial_vertical_positive :

  up

Plotting the depth vs time

o.plot_property('z')

Animate sediment particles colored by their depth

o.animation(color='z', fast=False, buffer=.01)
#o.animation(color='moving', fast=False, buffer=.01, colorbar=False, legend=['Sedimented', 'Moving'])

07:29:02 INFO    opendrift:4553: Saving animation to /root/project/docs/source/gallery/animations/example_sediments_0.gif...
07:29:54 INFO    opendrift:2994: Time to make animation: 0:01:00.806551