Data

RV Investigator Voyage IN2021_E01 EM122 Multibeam Echosounder Data

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) Data Officer (CN), Hobart (Processor of) Vandenbossche, Phil (Originator 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_E01 EM122 Multibeam Echosounder Data&rft.identifier=62cd58ea-e9a9-4280-b9b8-176ccfc0aa66&rft.publisher=Australian Ocean Data Network&rft.description=This record describes multibeam echosounder data collected on RV Investigator voyage IN2021_E01 (Trials and Calibration) which departed Hobart on the 10th November 2021 and returned to Hobart on the 14th November 2021. The purpose of this voyage was to undertake post port-period equipment calibrations and commissioning, sea trials and personnel training. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter in Storm Bay and offshore to the southeast of Tasman Peninsula. The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz. A patch test calibration was performed to determine the angular offsets of the system. Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 39 files totalling 1.31 GB of raw bathymetry (.all) data and 39 files totalling 1.82 GB of raw watercolum (.wcd) 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 corrections were applied to the processed data using the EGM2008 model (EGM_2008_1Min_Aust_WGS84.csar). Processed data had outliers removed. Processed line data are available in *.gsf and ascii 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.Maintenance and Update Frequency: asNeededStatement: Original field data. Processed data are SV corrected, tide not corrected and edited using CARIS version 11.4.2&rft.creator=Anonymous&rft.date=2021&rft.coverage=westlimit=147.35; southlimit=-43.59; eastlimit=148.72; northlimit=-42.89; projection=WGS 84 (EPSG:4326)&rft.coverage=westlimit=147.35; southlimit=-43.59; eastlimit=148.72; northlimit=-42.89; projection=WGS 84 (EPSG:4326)&rft_rights= https://creativecommons.org/licenses/by/4.0/&rft_rights=https://i.creativecommons.org/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Attribution 4.0&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&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: The dataset EM122 downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage IN2021_E01 (Trials and Calibration) by the Marine National Facility.&rft_rights=Attribution 4.0&rft_rights= https://creativecommons.org/licenses/by/4.0/&rft_subject=oceans&rft_subject=geoscientificInformation&rft_subject=Ship: Investigator (RV)&rft_subject=Marine National Facility&rft_subject=Gear Trials: IN2021_E01&rft_subject=BATHYMETRY/SEAFLOOR TOPOGRAPHY&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=Coastal Waters (Australia) | Tasmania Coast East and Southeast, TAS&rft_subject=Marine Features (Australia) | Derwent Estuary, TAS&rft_subject=Coastal Waters (Australia) | Tasmania Coast, TAS&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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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: The dataset EM122 downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage IN2021_E01 (Trials and Calibration) by the Marine National Facility.

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NCMIGeophysicalSurveyMapping@csiro.au
data-requests@marine.csiro.au

Brief description

This record describes multibeam echosounder data collected on RV Investigator voyage IN2021_E01 (Trials and Calibration) which departed Hobart on the 10th November 2021 and returned to Hobart on the 14th November 2021.

The purpose of this voyage was to undertake post port-period equipment calibrations and commissioning, sea trials and personnel training. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter in Storm Bay and offshore to the southeast of Tasman Peninsula.

The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz. A patch test calibration was performed to determine the angular offsets of the system.

Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO.

There are 39 files totalling 1.31 GB of raw bathymetry (.all) data and 39 files totalling 1.82 GB of raw watercolum (.wcd) 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 corrections were applied to the processed data using the EGM2008 model (EGM_2008_1Min_Aust_WGS84.csar). Processed data had outliers removed. Processed line data are available in *.gsf and ascii 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.

Lineage

Maintenance and Update Frequency: asNeeded
Statement: Original field data. Processed data are SV corrected, tide not corrected and edited using CARIS version 11.4.2

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148.72,-42.89 148.72,-43.59 147.35,-43.59 147.35,-42.89 148.72,-42.89

148.035,-43.24

text: westlimit=147.35; southlimit=-43.59; eastlimit=148.72; northlimit=-42.89; projection=WGS 84 (EPSG:4326)

Subjects
Bathymetry/Seafloor Topography | Coastal Waters (Australia) | Tasmania Coast East and Southeast, TAS | Coastal Waters (Australia) | Tasmania Coast, TAS | Density of the water body | EARTH SCIENCE | Gear Trials: IN2021_E01 | Marine Features (Australia) | Derwent Estuary, TAS | Marine National Facility | Multibeam Echosounder - EM122 | OCEANS | 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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Marine National Facility home page (MNF home page)

uri : https://mnf.csiro.au/

Identifiers
  • global : 62cd58ea-e9a9-4280-b9b8-176ccfc0aa66
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