Brief description
This record describes multibeam echosounder data collected on RV Investigator voyage IN2024_V01, 'Multidisciplinary Investigations of the Southern Ocean' which departed Hobart on 05/01/2024 and returned to Fremantle on 05/03/2024.The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information and watercolumn backscatter from Hobart, along the Antarctic ice edge to Fremantle.
The EM710 MKII provides a 0.5° by 1° transmit and receive angular resolution respectively. The echosounder's nominal frequency range is from 40 to 100 kHz.
Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 135 files totalling 126.9 GB of raw data in this dataset.
Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position. GPS tide was computed using the EGM2008 model and applied to the processed data. Processed data has had outliers removed. Processed line data are available in *.gsf and ascii format, and processed bathymetry grids in geotiff format.
Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request.
Lineage
Maintenance and Update Frequency: asNeeded
Statement: Original field data. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position and edited using CARIS version 11.4.2
Notes
CreditData collected on the Marine National Facility (MNF) RV Investigator voyage IN2024_V01. The MNF must be acknowledged in all outputs derived from Data and/or Samples collected by, or with support from, the MNF. Acknowledge the MNF in outputs with the statement: “We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” Acknowledgment and citations should be in all forms of publication including presentations (where the acknowledgement should be on the closing slide), journals, books, reports and related research outputs.
text: westlimit=113.24666667; southlimit=-67.00333333; eastlimit=151.41666667; northlimit=-31.93166667; projection=WGS 84 (EPSG:4326)
Subjects
Continents | Antarctica |
Earth Science | Oceans | Bathymetry/Seafloor Topography |
Global / Oceans | Australasia |
Global / Oceans | East Indian Ocean |
Global / Oceans | Indian Ocean |
Global / Oceans | Southern Ocean |
Global / Oceans | Southern Ocean/ Australia extension |
Marine National Facility |
Marine Planning Regions (Australia) | Australian Antarctic |
Multibeam Echosounder - EM710 MkII |
Named Locations (Antarctica) | East Antarctica |
Research Voyage: IN2024_V01 |
Ship: Investigator (RV) |
States, Territories (Australia) | Australian Antarctic Territory |
States, Territories (Australia) | Tasmania |
States, Territories (Australia) | Western Australia |
geoscientificInformation |
oceans |
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Other Information
Marine National Facility home page (MNF home page)
uri :
https://mnf.csiro.au/
Link to the CSIRO Data Access Portal (Data Access Portal)
Identifiers
- global : 8bba3eac-999a-4a14-8fb4-72ce8cee1e79
