2f0613fc-9b61-4b99-83d9-f542bd325d70 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-25T00:47:24 creation ISO 19115 2016 Bluefin BF2022_V01 EM2040c Multibeam Echosounder Data 2f0613fc-9b61-4b99-83d9-f542bd325d70 This record describes multibeam echosounder data collected on voyage BF2022_V01 aboard the AMC's vessel the Bluefin. The vessel departed Beauty Point on the 28/02/2022 and returned to Beauty Point on the 21/03/2022. The Kongsberg EM2040c multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter. The surveyed areas include Zeehan Marine Park, west of King Island and the Franklin Marine Park, west of Marrawah (NW Tasmania). A total surveyed area was 1026.2 km² not (including transits) comprising Zeehan Marine Park 726 km² and Franklin Marine Park 300.2 km². The EM2040c provides a 1.3 degree by 1.3 degree angular resolution. The echosounder's nominal frequency is 300 kHz and it operated in dual swath mode. Data are stored in .all raw format for bathymetry and backscatter and .wcd format for watercolumn backscatter at CSIRO. Raw data files include: 751 *.all files totalling 237GB 728 *.wcd files totalling 1.55TB Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position. Processed data was corrected to MSL utilising the EGM2008 geoid model. Processed data had outliers removed. Processed line data are available in *.gsf format, and processed bathymetry and backscatter grids in geotiff format. Additional information regarding this dataset, including information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request. {"type": "Polygon", "coordinates": [[[142.70255079, -41.52877805], [147.05313673, -41.52877805], [147.05313673, -39.47399021], [142.70255079, -39.47399021], [142.70255079, -41.52877805]]]} 142.70255079 147.05313673 -41.52877805 -39.47399021 Geophysical Survey and Mapping website information for this data set documentDigital Geophysical Survey and Mapping website information for this data set and link to downloading data. HTML survey information documentDigital survey information including voyage plans and summaries HTML Geophysical Survey and Mapping acquisition report documentDigital Geophysical Survey and Mapping acquisition report HTML Unnamed resource documentDigital License Graphic PNG