Data

RV Investigator Voyage IN2021_V03 EM122 Multibeam Echosounder Data

Australian Ocean Data Network
CSIRO (Associated with) CSIRO O&A, Information & Data Centre (Point of contact) CSIRO Oceans & Atmosphere - Hobart (Associated with) GSM Data Request (Point of contact) GSM Support (Custodian of)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://140.79.20.100:8080/geonetwork/srv/eng/catalog.search#/metadata/5c8b9142-e67c-4997-8465-35c74ac34c8b&rft.title=RV Investigator Voyage IN2021_V03 EM122 Multibeam Echosounder Data&rft.identifier=245ff34d-89da-4e81-b8d2-2aa8679858a1&rft.publisher=Australian Ocean Data Network&rft.description=This record describes multibeam echosounder data collected on RV Investigator voyage IN2021_v03, titled Integrated Marine Observing System: monitoring of East Australian Current property transports at 27 degrees South (multi-year). The voyage took place from Hobart (TAS) to Brisbane (QLD) between May 8 and June 3, 2021.The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and water column backscatter, during the transit and at the East Australian Current (EAC) Moorings site.The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz.Data are stored in *.all raw format for bathymetry (459 files 26.4 GB) and backscatter and *.wcd format for watercolumn backscatter (423 files 28.9 GB) at CSIRO. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position. The data has been reduced to approximate Mean Sea Level (MSL) using the Earth Gravitation Model 2008 (EGM2008) 1 arc-minute x 1 arc-minute grid spacing.Tide corrections were not applied to the processed data. Processed data had outliers removed. Processed line data are available in *.gsf (version 3.0.9) and ascii format, and processed bathymetry 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.Maintenance and Update Frequency: asNeededStatement: Original field data. Processed data are SV corrected, tide not corrected and edited using CARIS version 11.3.8&rft.creator=Anonymous&rft.date=2021&rft.coverage=westlimit=147.5; southlimit=-43.4; eastlimit=156; northlimit=-25; projection=WGS 84 (EPSG:4326)&rft.coverage=westlimit=147.5; southlimit=-43.4; eastlimit=156; northlimit=-25; projection=WGS 84 (EPSG:4326)&rft_rights=Attribution 4.0 https://creativecommons.org/licenses/by/4.0/&rft_rights=&rft_rights=Data is made available under a Creative Commons Attribution 4.0 International Licence, please see link. Data is supplied 'as is' without any warranty or guarantee except as required by law to be given to you. The data may not be free of error, comprehensive, current or appropriate for your particular purpose. You accept all risk and responsibility for its use. ATTRIBUTION STATEMENT: We acknowledge the use of the CSIRO Marine National Facility, grid.473585.8 in undertaking this research. The dataset [Insert-dataset-name-here] downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage IN2021_V03 by the Marine National Facility.&rft_subject=oceans&rft_subject=geoscientificInformation&rft_subject=Ship: Investigator (RV)&rft_subject=Marine National Facility&rft_subject=Research Voyage: IN2021_V03&rft_subject=Earth Science | Oceans | Bathymetry/Seafloor Topography&rft_subject=Coastal Waters (Australia) | Tasmania Coast East and Southeast, TAS&rft_subject=Coastal Waters (Australia) | New South Wales Coast, NSW&rft_subject=Coastal Cities / Towns (Australia) | Brisbane, QLD&rft_subject=Multibeam Echosounder - EM122&rft_subject=Sea-floor depth below surface of the water body&rft_subject=Sea-floor surface hardness&rft_subject=Density of the water body&rft_subject=research vessel&rft_subject=multi-beam echosounders&rft.type=dataset&rft.language=English Access the data
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Attribution 4.0
https://creativecommons.org/licenses/by/4.0/

Data is made available under a Creative Commons Attribution 4.0 International Licence, please see link. Data is supplied 'as is' without any warranty or guarantee except as required by law to be given to you. The data may not be free of error, comprehensive, current or appropriate for your particular purpose. You accept all risk and responsibility for its use. ATTRIBUTION STATEMENT: We acknowledge the use of the CSIRO Marine National Facility, grid.473585.8 in undertaking this research. The dataset [Insert-dataset-name-here] downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage IN2021_V03 by the Marine National Facility.

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Full description

This record describes multibeam echosounder data collected on RV Investigator voyage IN2021_v03, titled "Integrated Marine Observing System: monitoring of East Australian Current property transports at 27 degrees South (multi-year)." The voyage took place from Hobart (TAS) to Brisbane (QLD) between May 8 and June 3, 2021.

The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and water column backscatter, during the transit and at the East Australian Current (EAC) Moorings site.

The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz.

Data are stored in *.all raw format for bathymetry (459 files 26.4 GB) and backscatter and *.wcd format for watercolumn backscatter (423 files 28.9 GB) at CSIRO.

Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position. The data has been reduced to approximate Mean Sea Level (MSL) using the Earth Gravitation Model 2008 (EGM2008) 1 arc-minute x 1 arc-minute grid spacing.

Tide corrections were not applied to the processed data. Processed data had outliers removed. Processed line data are available in *.gsf (version 3.0.9) and ascii format, and processed bathymetry 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.

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Maintenance and Update Frequency: asNeeded
Statement: Original field data. Processed data are SV corrected, tide not corrected and edited using CARIS version 11.3.8

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156,-25 156,-43.4 147.5,-43.4 147.5,-25 156,-25

151.75,-34.2

text: westlimit=147.5; southlimit=-43.4; eastlimit=156; northlimit=-25; projection=WGS 84 (EPSG:4326)

Subjects
Coastal Cities / Towns (Australia) | Brisbane, QLD | Coastal Waters (Australia) | New South Wales Coast, NSW | Coastal Waters (Australia) | Tasmania Coast East and Southeast, TAS | Density of the water body | Earth Science | Oceans | Bathymetry/Seafloor Topography | Marine National Facility | Multibeam Echosounder - EM122 | Research Voyage: IN2021_V03 | Sea-floor depth below surface of the water body | Sea-floor surface hardness | Ship: Investigator (RV) | geoscientificInformation | multi-beam echosounders | oceans | research vessel |

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Other Information
Geophysical Survey and Mapping website information for this data set and link to downloading data. (Geophysical Survey and Mapping website information for this data set)

url : https://www.marine.csiro.au/data/gsm/gsm_extract.cfm?survey=IN2021_V03&instrument=EM122

RV Investigator survey information including voyage plans and summaries (RV Investigator survey information)

url : https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2021_V03

Marine National Facility home page (MNF home page)

url : https://mnf.csiro.au/

Geophysical Survey and Mapping acquisition report

url : https://www.marine.csiro.au/data/gsm/get_report.cfm?survey=in2021_v03

Identifiers
  • global : 245ff34d-89da-4e81-b8d2-2aa8679858a1