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Earth Science | Oceans | Ocean Acoustics | Acoustic Reflectivity
320 record(s)
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This record describes multibeam echosounder data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2020_V01, titled: “Development of William’s Ridge, Kerguelen Plateau: tectonics, hotspot magmatism, microcontinents, and Australia’s Extended Continental Shelf” between January 08 and March 06, 2020 departing from Henderson (WA) and returning back to Fremantle (WA). The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter at Rig Seismic Seamount, Williams Ridge, Broken Ridge and on associated transits. 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 and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 2164 files totalling 174 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 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.
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Tests were carried out to investigate target response using 3 frequencies of echosounder data, giving an output in the form of digital traces. The data were collected during the FRV Southern Surveyor cruise SS 02/97 which travelled from Cairns to Karumba to Gove to Darwin.
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This data set contains Simrad EK500 single beam echosounder data at 38 and 120 kHz and Simrad EA500 single beam echosounder data at 12 kHz from the Southern Surveyor. The EK500 data is primarily for water column characterisation (fish stocks, microplankton distribution) and on occasions for seabed classification (particularly prior to the EM300 swath mapper being installed), while the EA500 data is primarily for bathymetric readings.
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This data set contains Simrad EK500 single beam echosounder data at 38 and 120 kHz and Simrad EA500 single beam echosounder data at 12 kHz from the Southern Surveyor. The EK500 data is primarily for water column characterisation (fish stocks, microplankton distribution) and on occasions for seabed classification (particularly prior to the EM300 swath mapper being installed), while the EA500 data is primarily for bathymetric readings.
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Acoustic data were collected by the Division's "RoxAnn" system, to measure roughness and hardness of the seabed. The data were collected on two research cruises on the FRV Southern Surveyor in the Gulf of Carpentaria. The first (SS 02/97) was in February-March 1997, travelling from Cairns to Darwin, and the second (SS 08/97) in October-November 1997, travelling from Darwin to Torres Strait and Weipa.
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This record describes echosounder data collected on RV Investigator voyage IN2015_E01, which departed Hobart on the 29 Jan 2015 and returning to Hobart on the 19 Feb 2015, after successfully testing equipment at 65° south. The Simrad EK60 split beam echosounders 38, 70, 120, 200 and 333 KHz were used to acquire water column and bathymetry data between Hobart and Antarctica. Data are stored in *.raw *.bot and *.idx format at CSIRO Oceans and Atmosphere. There are 906 files totalling 43.1 GB of raw data in this dataset. Additional information regarding this dataset is contained in the GSM data acquisition and processing report.
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This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_T01, which departed Hobart 2015-05-10 and arrived Sydney on 2015-05-13. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the east coast slope from Hobart to Sydney. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 65 files totaling 2.6 GB of raw data in this dataset. Sound velocity profiles using sea surface temperature were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.
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This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E06, which consisted of three legs, 5-8 Oct 2015, 9-11 Oct 2015 and 12-16 Oct 2015, in and out of Hobart. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information out to deep water 42-43 S. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 47 files totaling 1.24 GB of raw data in this dataset. 24 sound velocity profiles were applied to this data during data acquisition. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.
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This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_T01, which departed Hobart 2015-05-10 and arrived Sydney on 2015-05-13. The Kongsberg EM710 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the east coast slope from Hobart to Sydney. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 33 files totaling 3.1 GB of raw data in this dataset. Sound velocity profiles using climatology were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.
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This record describes multibeam echosounder data collected on RV Investigator voyage IN2014_E02. The sea trial voyage included two legs, both from Hobart to Hobart with Leg 1 between 28th of October to the 1st November and Leg 2 from the 1st November to the 6th November. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 159 files totalling 6.39 GB of raw data in this dataset. 69 sound velocity profiles were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.