.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "gallery/example_sediments.py" .. LINE NUMBERS ARE GIVEN BELOW. .. only:: html .. note:: :class: sphx-glr-download-link-note :ref:`Go to the end ` to download the full example code. .. rst-class:: sphx-glr-example-title .. _sphx_glr_gallery_example_sediments.py: Sediment drift from Glomma river outlet ======================================= .. GENERATED FROM PYTHON SOURCE LINES 6-22 .. code-block:: Python 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/fou-hi/norkystv3_800m_m00_be']) .. rst-class:: sphx-glr-script-out .. code-block:: none 15:20:30 INFO opendrift:568: OpenDriftSimulation initialised (version 1.14.3 / v1.14.3-4-ga7b402c) .. GENERATED FROM PYTHON SOURCE LINES 23-24 Adding some diffusion .. GENERATED FROM PYTHON SOURCE LINES 24-29 .. code-block:: Python 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') .. GENERATED FROM PYTHON SOURCE LINES 30-31 Source of sediments at Glomma river outlet .. GENERATED FROM PYTHON SOURCE LINES 31-39 .. code-block:: Python 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)) .. rst-class:: sphx-glr-script-out .. code-block:: none 15:20:30 INFO opendrift.models.basemodel.environment:206: Adding a global landmask from GSHHG 15:20:34 INFO opendrift.models.basemodel.environment:229: Fallback values will be used for the following variables which have no readers: 15:20:34 INFO opendrift.models.basemodel.environment:232: x_sea_water_velocity: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: y_sea_water_velocity: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: sea_surface_height: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: upward_sea_water_velocity: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: x_wind: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: y_wind: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: sea_surface_wave_stokes_drift_x_velocity: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: sea_surface_wave_stokes_drift_y_velocity: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: sea_surface_wave_period_at_variance_spectral_density_maximum: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: ocean_vertical_diffusivity: 0.020000 15:20:34 INFO opendrift.models.basemodel.environment:232: ocean_mixed_layer_thickness: 50.000000 15:20:34 INFO opendrift.models.basemodel.environment:232: sea_floor_depth_below_sea_level: 10000.000000 15:20:34 INFO opendrift:1789: Storing previous values of element property lon because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous'])) 15:20:34 INFO opendrift:1789: Storing previous values of element property lat because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous'])) 15:20:35 INFO opendrift:944: Using existing reader for land_binary_mask to move elements to ocean 15:20:35 INFO opendrift:974: All points are in ocean 15:20:35 INFO opendrift:2085: 2025-09-12 15:20:30.894078 - step 1 of 216 - 35 active elements (0 deactivated) 15:20:35 INFO opendrift.readers:61: Opening file with xr.open_dataset 15:20:36 INFO opendrift.readers.reader_netCDF_CF_generic:332: Detected dimensions: {'x': 'X', 'y': 'Y', 'z': 'depth', 'time': 'time'} 15:20:36 INFO opendrift.readers.basereader:176: Variable x_sea_water_velocity will be rotated from eastward_sea_water_velocity 15:20:36 INFO opendrift.readers.basereader:176: Variable y_sea_water_velocity will be rotated from northward_sea_water_velocity 15:20:36 INFO opendrift.readers.basereader:176: Variable x_wind will be rotated from eastward_wind 15:20:36 INFO opendrift.readers.basereader:176: Variable y_wind will be rotated from northward_wind 15:20:39 INFO opendrift:2085: 2025-09-12 15:30:30.894078 - step 2 of 216 - 70 active elements (0 deactivated) 15:20:39 INFO opendrift:2085: 2025-09-12 15:40:30.894078 - step 3 of 216 - 105 active elements (0 deactivated) 15:20:39 INFO opendrift:2085: 2025-09-12 15:50:30.894078 - step 4 of 216 - 139 active elements (0 deactivated) 15:20:42 INFO opendrift:2085: 2025-09-12 16:00:30.894078 - step 5 of 216 - 174 active elements (0 deactivated) 15:20:44 INFO opendrift:2085: 2025-09-12 16:10:30.894078 - step 6 of 216 - 209 active elements (0 deactivated) 15:20:44 INFO opendrift:2085: 2025-09-12 16:20:30.894078 - step 7 of 216 - 244 active elements (0 deactivated) 15:20:44 INFO opendrift:2085: 2025-09-12 16:30:30.894078 - step 8 of 216 - 278 active elements (0 deactivated) 15:20:44 INFO opendrift:2085: 2025-09-12 16:40:30.894078 - step 9 of 216 - 313 active elements (0 deactivated) 15:20:44 INFO opendrift:2085: 2025-09-12 16:50:30.894078 - step 10 of 216 - 348 active elements (0 deactivated) 15:20:44 INFO opendrift:2085: 2025-09-12 17:00:30.894078 - step 11 of 216 - 382 active elements (0 deactivated) 15:20:45 INFO opendrift:2085: 2025-09-12 17:10:30.894078 - step 12 of 216 - 417 active elements (0 deactivated) 15:20:45 INFO opendrift:2085: 2025-09-12 17:20:30.894078 - step 13 of 216 - 452 active elements (0 deactivated) 15:20:45 INFO opendrift:2085: 2025-09-12 17:30:30.894078 - step 14 of 216 - 487 active elements (0 deactivated) 15:20:45 INFO opendrift:2085: 2025-09-12 17:40:30.894078 - step 15 of 216 - 521 active elements (0 deactivated) 15:20:45 INFO opendrift:2085: 2025-09-12 17:50:30.894078 - step 16 of 216 - 556 active elements (0 deactivated) 15:20:45 INFO opendrift:2085: 2025-09-12 18:00:30.894078 - step 17 of 216 - 591 active elements (0 deactivated) 15:20:47 INFO opendrift:2085: 2025-09-12 18:10:30.894078 - step 18 of 216 - 625 active elements (0 deactivated) 15:20:47 INFO opendrift:2085: 2025-09-12 18:20:30.894078 - step 19 of 216 - 660 active elements (0 deactivated) 15:20:47 INFO opendrift:2085: 2025-09-12 18:30:30.894078 - step 20 of 216 - 695 active elements (0 deactivated) 15:20:47 INFO opendrift:2085: 2025-09-12 18:40:30.894078 - step 21 of 216 - 730 active elements (0 deactivated) 15:20:47 INFO opendrift:2085: 2025-09-12 18:50:30.894078 - step 22 of 216 - 764 active elements (0 deactivated) 15:20:47 INFO opendrift:2085: 2025-09-12 19:00:30.894078 - step 23 of 216 - 799 active elements (0 deactivated) 15:20:49 INFO opendrift:2085: 2025-09-12 19:10:30.894078 - step 24 of 216 - 834 active elements (0 deactivated) 15:20:49 INFO opendrift:2085: 2025-09-12 19:20:30.894078 - step 25 of 216 - 868 active elements (0 deactivated) 15:20:49 INFO opendrift:2085: 2025-09-12 19:30:30.894078 - step 26 of 216 - 903 active elements (0 deactivated) 15:20:49 INFO opendrift:2085: 2025-09-12 19:40:30.894078 - step 27 of 216 - 938 active elements (0 deactivated) 15:20:49 INFO opendrift:2085: 2025-09-12 19:50:30.894078 - step 28 of 216 - 973 active elements (0 deactivated) 15:20:49 INFO opendrift:2085: 2025-09-12 20:00:30.894078 - step 29 of 216 - 1007 active elements (0 deactivated) 15:20:50 INFO opendrift:2085: 2025-09-12 20:10:30.894078 - step 30 of 216 - 1042 active elements (0 deactivated) 15:20:50 INFO opendrift:2085: 2025-09-12 20:20:30.894078 - step 31 of 216 - 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<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:                                            ...


.. GENERATED FROM PYTHON SOURCE LINES 40-41 Plotting the depth vs time .. GENERATED FROM PYTHON SOURCE LINES 41-43 .. code-block:: Python o.plot_property('z') .. image-sg:: /gallery/images/sphx_glr_example_sediments_001.png :alt: z :srcset: /gallery/images/sphx_glr_example_sediments_001.png :class: sphx-glr-single-img .. GENERATED FROM PYTHON SOURCE LINES 44-45 Animate sediment particles colored by their depth .. GENERATED FROM PYTHON SOURCE LINES 45-48 .. code-block:: Python o.animation(color='z', fast=False, buffer=.01) #o.animation(color='moving', fast=False, buffer=.01, colorbar=False, legend=['Sedimented', 'Moving']) .. rst-class:: sphx-glr-script-out .. code-block:: none 15:22:36 INFO opendrift:4612: Saving animation to /root/project/docs/source/gallery/animations/example_sediments_0.gif... 15:23:21 INFO opendrift:3053: Time to make animation: 0:00:54.064824 .. GENERATED FROM PYTHON SOURCE LINES 49-50 .. image:: /gallery/animations/example_sediments_0.gif .. rst-class:: sphx-glr-timing **Total running time of the script:** (2 minutes 56.227 seconds) .. _sphx_glr_download_gallery_example_sediments.py: .. only:: html .. container:: sphx-glr-footer sphx-glr-footer-example .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: example_sediments.ipynb ` .. container:: sphx-glr-download sphx-glr-download-python :download:`Download Python source code: example_sediments.py ` .. container:: sphx-glr-download sphx-glr-download-zip :download:`Download zipped: example_sediments.zip ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_