CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis
Bathymetry data was collected using a Simrad EK60 echosounder. The sample data have been corrected for the relative locations of GPS antenna, transducers and waterline. A sound-speed value of 1500 m/s was applied when calculating depth. The seafloor depth itself was defined firstly as the depth of t...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/ceamarc-caso-12khz-aurora-australis/700746 https://doi.org/10.4225/15/5a137397eab73 https://data.aad.gov.au/metadata/records/CEAMARC_CASO_200708030_BATHYMETRY http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::700746 2023-05-15T15:33:48+02:00 CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis JARVIS, TOBY (hasPrincipalInvestigator) JARVIS, TOBY (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-42.88246; southlimit=-67.07104; westlimit=139.01488; eastLimit=150.06479; projection=WGS84 Temporal: From 2007-12-16 to 2008-01-26 https://researchdata.ands.org.au/ceamarc-caso-12khz-aurora-australis/700746 https://doi.org/10.4225/15/5a137397eab73 https://data.aad.gov.au/metadata/records/CEAMARC_CASO_200708030_BATHYMETRY http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/ceamarc-caso-12khz-aurora-australis/700746 c43b294b-2ca3-4637-b11b-ed25d6ab9638 doi:10.4225/15/5a137397eab73 CEAMARC_CASO_200708030_BATHYMETRY https://data.aad.gov.au/metadata/records/CEAMARC_CASO_200708030_BATHYMETRY http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre oceans WATER DEPTH EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY OCEAN ACOUSTICS BATHYMETRY Simrad EK60 Echosounder Acoustic Sounders R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/5a137397eab73 2020-01-05T21:18:05Z Bathymetry data was collected using a Simrad EK60 echosounder. The sample data have been corrected for the relative locations of GPS antenna, transducers and waterline. A sound-speed value of 1500 m/s was applied when calculating depth. The seafloor depth itself was defined firstly as the depth of the sounder-detected bottom minus 10m (contact Simrad for more information about their bottom-detection algorithm), and then modified manually where necessary to ensure that the line followed the seafloor as perceived by eye from the echogram. This is therefore a subjective process, and the true seafloor depth may vary from the perceived depth by several hundred metres in the worst cases. The greatest uncertainties are typically at greater depths, e.g. greater than 1000 m. This seafloor depth line therefore refers to the approximate depth (not range from transducer) of the seafloor less 10 m, i.e. 10 m should be added to the 'depth' values in the *.CSV file to give the 'true' seafloor depth. Depths greater than 5000 m are not available due to the 12 kHz data not being logged any deeper than this. These data are preliminary and subject to change. Bathymetry data was exported during the voyage by Belinda Ronai. Post voyage enquiries however should be directed to Toby Jarvis. Dataset aurora australis Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean ENVELOPE(139.01488,150.06479,-42.88246,-67.07104) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
oceans WATER DEPTH EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY OCEAN ACOUSTICS BATHYMETRY Simrad EK60 Echosounder Acoustic Sounders R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR |
spellingShingle |
oceans WATER DEPTH EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY OCEAN ACOUSTICS BATHYMETRY Simrad EK60 Echosounder Acoustic Sounders R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis |
topic_facet |
oceans WATER DEPTH EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY OCEAN ACOUSTICS BATHYMETRY Simrad EK60 Echosounder Acoustic Sounders R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR |
description |
Bathymetry data was collected using a Simrad EK60 echosounder. The sample data have been corrected for the relative locations of GPS antenna, transducers and waterline. A sound-speed value of 1500 m/s was applied when calculating depth. The seafloor depth itself was defined firstly as the depth of the sounder-detected bottom minus 10m (contact Simrad for more information about their bottom-detection algorithm), and then modified manually where necessary to ensure that the line followed the seafloor as perceived by eye from the echogram. This is therefore a subjective process, and the true seafloor depth may vary from the perceived depth by several hundred metres in the worst cases. The greatest uncertainties are typically at greater depths, e.g. greater than 1000 m. This seafloor depth line therefore refers to the approximate depth (not range from transducer) of the seafloor less 10 m, i.e. 10 m should be added to the 'depth' values in the *.CSV file to give the 'true' seafloor depth. Depths greater than 5000 m are not available due to the 12 kHz data not being logged any deeper than this. These data are preliminary and subject to change. Bathymetry data was exported during the voyage by Belinda Ronai. Post voyage enquiries however should be directed to Toby Jarvis. |
author2 |
JARVIS, TOBY (hasPrincipalInvestigator) JARVIS, TOBY (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis |
title_short |
CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis |
title_full |
CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis |
title_fullStr |
CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis |
title_full_unstemmed |
CEAMARC-CASO 12kHz Bathymetry - data collected from voyage 3, 2007-2008 of the Aurora Australis |
title_sort |
ceamarc-caso 12khz bathymetry - data collected from voyage 3, 2007-2008 of the aurora australis |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/ceamarc-caso-12khz-aurora-australis/700746 https://doi.org/10.4225/15/5a137397eab73 https://data.aad.gov.au/metadata/records/CEAMARC_CASO_200708030_BATHYMETRY http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-42.88246; southlimit=-67.07104; westlimit=139.01488; eastLimit=150.06479; projection=WGS84 Temporal: From 2007-12-16 to 2008-01-26 |
long_lat |
ENVELOPE(139.01488,150.06479,-42.88246,-67.07104) |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
aurora australis Southern Ocean |
genre_facet |
aurora australis Southern Ocean |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/ceamarc-caso-12khz-aurora-australis/700746 c43b294b-2ca3-4637-b11b-ed25d6ab9638 doi:10.4225/15/5a137397eab73 CEAMARC_CASO_200708030_BATHYMETRY https://data.aad.gov.au/metadata/records/CEAMARC_CASO_200708030_BATHYMETRY http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/5a137397eab73 |
_version_ |
1766364407733944320 |