RV Investigator Voyage IN2020_V08 EM122 Multibeam Echosounder Data
This record describes multibeam echosounder data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2020_V08, titled "SOLACE - Southern Ocean Large Areal Carbon Export: quantifying carbon sequestration in subpolar and polar waters." The voyage took place between December 5, 2020 and January 16, 2021 departing from Hobart (TAS) and arriving in Hobart (TAS).
The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter while transiting between Hobart and study sites in the Southern Ocean.
The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz.
Data are stored in *.all (364 files 19.7 GB) raw format for bathymetry and backscatter and *.wcd (328 files 14.3 GB) format for watercolumn backscatter 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.
Tide corrections were applied to the processed data using RTK/GPS height and the EGM2008 geoid model in Qimera. 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.
Simple
Identification info
- Alternate title
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IN2020_V08 EM122
- Date
- Status
- Completed
- Point of contact
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Role Organisation Electronic mail address Point of contact CSIRO Oceans & Atmosphere - Hobart
Custodian
- Topic category
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- Oceans
- Geoscientific information
Extent
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Temporal extent
- Time position
- 2020-12-05T08:00:00
- Time position
- 2021-01-16T09:00:00
- Maintenance and update frequency
- As needed
- CSIRO Source List
- CSIRO Areas Of Interest
- CSIRO Survey List
- GCMD Keywords
- AODN Geographic Extent Names
- CSIRO Equipment
- Keywords
- Keywords
- Keywords
Resource constraints
- Title
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Attribution 4.0
- Other constraints
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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 [Insert-dataset-name-here] downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage in2020_v08 by the Marine National Facility.
- Language
- English
- Character encoding
- UTF8
Content Information
- Content type
- Physical measurement
Identifier
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Other property
- research vessel Platform used to capture data multi-beam echosounders
Identifier
- Identifier
- http://resource.geosciml.org/classifier/cgi/geologicunittype/geologic_unit
- Name
- geologic unit
- Other property
- research vessel Platform used to capture data multi-beam echosounders
Identifier
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UKMC
- Name
- Kilograms per cubic metre
- Other property
- research vessel Platform used to capture data multi-beam echosounders
Distribution Information
- Distribution format
-
-
DIGITAL - Binary
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- OnLine resource
-
Geophysical Survey and Mapping website information for this data set
Geophysical Survey and Mapping website information for this data set and link to downloading data.
- OnLine resource
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RV Investigator survey information
RV Investigator survey information including voyage plans and summaries
- OnLine resource
-
MNF home page
Marine National Facility home page
- OnLine resource
-
Geophysical Survey and Mapping acquisition report
Geophysical Survey and Mapping acquisition report
Data quality info
- Hierarchy level
- Dataset
Report
Result
- Date (Publication)
- 2016-04-20T00:00:00
- Explanation
-
Further information on data quality/completeness and attribute accuracy can be found in the data acquisition and processing report.
Report
Result
- Explanation
-
As per ship's onboard navigation system - accurate to +/- 1 metres approx.
Report
Result
- Date (Publication)
- 2016-04-20T00:00:00
- Explanation
-
Further information on attribute accuracy can be found in the data acquisition and processing report.
Resource lineage
- Statement
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Original field data. Processed data are SV corrected, tide corrected using RTK/GPS height and the EGM2008 geoid model and edited using Qimera 2.3.1.
- Hierarchy level
- Dataset
Reference System Information
- Reference system identifier
- EPSG/WGS 84 (EPSG:4326)
Metadata
- Metadata identifier
- urn:uuid/21cb2d1b-b216-4adf-8674-f0277fbd7c64
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation Electronic mail address Processor CSIRO NCMI
Point of contact CSIRO Oceans & Atmosphere - Hobart
Originator CSIRO
Type of resource
- Resource type
- Dataset
- Date info (Creation)
- 2016-05-11T13:05:20
- Date info (Revision)
- 2021-03-03T08:15:26
Metadata standard
- Title
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ISO 19115-3:2018
- Title
-
Marine Community Profile
- Date (Creation)
- 2019-05-30
- Edition
-
3.0
- Edition date
- 2019-05-30T00:00:00
- Cited responsible party
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Role Organisation Electronic mail address Custodian Marine Community Profile Governance Committee
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