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RV Investigator Voyage IN2018_V08 EM710 MKII Multibeam Echosounder Data

Created 12/10/2024

Updated 12/10/2024

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This record describes multibeam echosounder data collected on RV Investigator voyage IN2018_V08, The Balleny mantle plume: key role in Tasmania-Antarctic breakup?, which departed Hobart on the 27/12/2018 and returned to Hobart on the 10/01/2019. The voyage objectives was to identify/map seamounts of the Balleny seamount chain and dredge volcanic samples from the identified seamounts.

The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter in the Tasman Sea.

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 28 files totalling 25.2 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.

Tide corrections were not applied to the processed data. Processed data has 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 further 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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Additional Info

Field Value
Title RV Investigator Voyage IN2018_V08 EM710 MKII Multibeam Echosounder Data
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/32e28235-22f2-4608-b28d-6d6654f6f8b1
Contact Point
Atlantic Oceanographic and Meteorological Laboratory (AOML)
data-requests-hf@csiro.au
Reference Period 12/02/2019
Geospatial Coverage {"type": "Polygon", "coordinates": [[[147.0, -46.0], [161.0, -46.0], [161.0, -37.0], [147.0, -37.0], [147.0, -46.0]]]}
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