{"help": "https://data.gov.au/data/api/3/action/help_show?name=package_show", "success": true, "result": {"archived": false, "author_email": null, "contact_point": "metadata@aad.gov.au", "creator_user_id": "c2fbbe4a-4ba0-4945-808b-67454605a4cf", "duplicate_score": 1, "geospatial_topic": [], "id": "0ac11a10-c1df-47f8-99a8-2742a5b28356", "isopen": false, "language": "eng", "license_id": "notspecified", "license_title": "notspecified", "maintainer": null, "maintainer_email": null, "metadata_created": "2025-06-23T13:17:37.281607", "metadata_modified": "2025-06-23T13:17:37.281616", "name": "satellite-derived-bathymetry-davis-station-vestfold-hills-2012", "notes": "\nPre-processed satellite imagery [Davis Station_Preprocessed_WV2_Shallow Water.tif]\nIMPORTANT: This data cannot be shared due to licensing conditions and is provided for archival purposes only.\n\nWorldview-2 Imagery was provided at Processing level 2A in UTM 44S projection. The following Pre-processing steps were applied:\n1.  Radiometric Correction: Digital Numbers converted to TOA Reflectance\n2.  Atmospheric Correction: Dark Object Subtraction\n3.  Masking: Masking of Land and Ice features using classification of accompanying PAN imagery\n4.  Shallow Water Masking: Deep water masked out by thresh-holding the green and yellow bands\nThe pre-processed data is provided as an 8-band Geotiff in UTM 44s with pixels of 2 m. \n\nSatellite-derived bathymetry grid [Davis Station_SDB_utm44s_alat.tiff]\nThis bathymetry dataset was produced by applying the SMART-SDB model to Worldview 2 Multispectral Image acquired on 20120118 at 04:52:17Z. Multibeam bathymetry data acquired in February-March 20101 using a Kongsberg EM 3002D MBES, with vertical and horizontal accuracy of 0.38m and 1.95m respectively, was used for both calibration and validation of the SMART-SDB model. Derived data was smoothed using a low pass filter, and manually cleaned for erroneous returns (however some may still exist). A description of the methods is available in the attached reports. \n\nProjection: UTM44S\nTidal datum: ALAT (approximate lowest astronomical tide) \nFormat: geotiff, ASCI xyz \nDepths Derived from Satellite Imagery. For SA awareness only. Not for Navigation. Vertical Accuracy is un-assessable and should be considered worse than ZOC C. Undetected features significant to surface navigation may exist.\n\n\nBathymetry map (Davis Station SDB Chart_OFFICIAL.pdf)\nThis map shows the hydrographic chart from Davis Station overlayed with the new satellite-derived bathymetry data. \n\n\nPython Scripts and Guide \nThese scripts were developed to automate extraction of satellite-derived bathymetry from the Worldview-2 imagery. Details of the scripts and how to apply them are outlined in the guide: Antarctica SDB Project How To.docx\n\n\nFinal report [AASP4392_Antarctica SDB Project_FINAL_REPORT.docx]\nThis report outlines the objectives, methods, results and conclusions for the satellite-derived bathymetry project (AASP4392). It has not been peer-reviewed.\n\n\n1 A collaborative Australian Hydrographic Service, Geoscience Australia and Australian Antarctic Division survey on the Howard Burton acquired multibeam bathymetry data using a Kongsberg EM 3002D MBES with vertical and horizontal accuracy of 0.38m and 1.95m respectively in the nearshore waters of the Vestfold Hills in February-March 2010. \nThis survey is part of Australian Antarctic Project (AAP) 5093: Hydrographic Surveying and Seabed Characterisation (CI: Ursula Harris)\nThe data was extracted from the Australian Hydrographic Office database (20100329 Hydrographic survey) and is available at: O'Brien, P.E. (2011) Coastal seabed mapping survey, Vestfold Hills, Antarctica, February-March 2010, Ver. 2, Australian Antarctic Data Centre https://data.aad.gov.au/metadata/records/Davis_multibeam_grids)", "num_resources": 4, "num_tags": 13, "organization": {"id": "0143757a-86ab-43e4-bba6-4a3a2a02b6c4", "name": "australian-ocean-data-network", "title": "Australian Ocean Data Network", "type": "organization", "description": "Harvester for Australian Ocean Data Network", "image_url": "", "created": "2025-06-23T12:29:10.320926", "is_organization": true, "approval_status": "approved", "state": "active"}, "original_harvest_source": {"site_url": "https://catalogue.aodn.org.au", "href": "https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/satellite-derived-bathymetry-davis-station-vestfold-hills-2012", "title": "Australian Oceans Data Network"}, "owner_org": "0143757a-86ab-43e4-bba6-4a3a2a02b6c4", "private": false, "promotion_level": "0", "spatial": "{\"type\": \"Polygon\", \"coordinates\": 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