Through-ice communication by Weddell seals may not be practicable
Possible communication between territorial male Weddell seals (Leptonychotes weddellii) under the ice with females on the ice was investigated. In-air and underwater recordings of underwater calls were made at three locations near Davis, Antarctica. Most underwater calls were not detectable in air,...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/through-ice-communication-seals-practicable/699737 https://doi.org/10.4225/15/55EF991B8EEAB https://data.aad.gov.au/metadata/records/ASAC_2122-3 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::699737 2023-05-15T13:46:57+02:00 Through-ice communication by Weddell seals may not be practicable TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-68.5699; southlimit=-68.5699; westlimit=77.9266; eastLimit=77.9266; projection=WGS84 Temporal: From 1997-12-01 to 1997-12-08 https://researchdata.ands.org.au/through-ice-communication-seals-practicable/699737 https://doi.org/10.4225/15/55EF991B8EEAB https://data.aad.gov.au/metadata/records/ASAC_2122-3 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/through-ice-communication-seals-practicable/699737 7ebed54f-426b-4c9a-aaaf-e9300220a67f doi:10.4225/15/55EF991B8EEAB ASAC_2122-3 https://data.aad.gov.au/metadata/records/ASAC_2122-3 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS ATTRIBUTE CALL TYPE CALLS CASEY DAVIS ELEMENTS FREQUENCY LEPTONYCHOTES WEDDELLII REPETITION TIME TRILLS UNDERWATER VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/55EF991B8EEAB 2020-01-05T21:16:37Z Possible communication between territorial male Weddell seals (Leptonychotes weddellii) under the ice with females on the ice was investigated. In-air and underwater recordings of underwater calls were made at three locations near Davis, Antarctica. Most underwater calls were not detectable in air, often because of wind noise. In-air call amplitudes of detectable calls ranged from 32-74 dB re. 20 microPa at 86 Hz down to 4-38 dB re. 20 microPa at 3.6 kHz. Most of these would be audible to humans. Only 26 of 582 amplitude measurements (from 230 calls) ranged from 5 dB to a maximum of 15 dB above the minimum harbour-seal (Phoca vitulina) in-air detection threshold. Seals on the ice could likely hear a few very loud underwater calls but only if the caller was nearby and there were no wind noises. The low detectability of underwater calls in air likely precludes effective communication between underwater seals and those on the ice. See other metadata records and datasets associated with ASAC project 2122 (ASAC_2122) for further information. The fields in this dataset are: Column A: G = grunt, T = trill, CT = constant freq. trill, O = tone, C = chug, AW = ascending whistle, DW = descending whistle, L = growl, R - roar Column B: frequency (Hz) Column C: underwater call level NOTE dB re 20 uPa Column D: in-air call level dB re 20 uPa Column E: in-air background noise level at this frequency dB re 20 uPa Column F: water - air difference dB Column G: location, 1-3, see paper for code Column H: seal in-air threshold dB re 20 uPa Column I: human in-air threshold dB re 20 uPa Column J: seal in-air threshold at this frequency dB re 20 uPa Dataset Antarc* Antarctica harbour seal Phoca vitulina Weddell Seals Research Data Australia (Australian National Data Service - ANDS) Weddell ENVELOPE(77.9266,77.9266,-68.5699,-68.5699) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS ATTRIBUTE CALL TYPE CALLS CASEY DAVIS ELEMENTS FREQUENCY LEPTONYCHOTES WEDDELLII REPETITION TIME TRILLS UNDERWATER VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS ATTRIBUTE CALL TYPE CALLS CASEY DAVIS ELEMENTS FREQUENCY LEPTONYCHOTES WEDDELLII REPETITION TIME TRILLS UNDERWATER VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR Through-ice communication by Weddell seals may not be practicable |
topic_facet |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS ATTRIBUTE CALL TYPE CALLS CASEY DAVIS ELEMENTS FREQUENCY LEPTONYCHOTES WEDDELLII REPETITION TIME TRILLS UNDERWATER VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
description |
Possible communication between territorial male Weddell seals (Leptonychotes weddellii) under the ice with females on the ice was investigated. In-air and underwater recordings of underwater calls were made at three locations near Davis, Antarctica. Most underwater calls were not detectable in air, often because of wind noise. In-air call amplitudes of detectable calls ranged from 32-74 dB re. 20 microPa at 86 Hz down to 4-38 dB re. 20 microPa at 3.6 kHz. Most of these would be audible to humans. Only 26 of 582 amplitude measurements (from 230 calls) ranged from 5 dB to a maximum of 15 dB above the minimum harbour-seal (Phoca vitulina) in-air detection threshold. Seals on the ice could likely hear a few very loud underwater calls but only if the caller was nearby and there were no wind noises. The low detectability of underwater calls in air likely precludes effective communication between underwater seals and those on the ice. See other metadata records and datasets associated with ASAC project 2122 (ASAC_2122) for further information. The fields in this dataset are: Column A: G = grunt, T = trill, CT = constant freq. trill, O = tone, C = chug, AW = ascending whistle, DW = descending whistle, L = growl, R - roar Column B: frequency (Hz) Column C: underwater call level NOTE dB re 20 uPa Column D: in-air call level dB re 20 uPa Column E: in-air background noise level at this frequency dB re 20 uPa Column F: water - air difference dB Column G: location, 1-3, see paper for code Column H: seal in-air threshold dB re 20 uPa Column I: human in-air threshold dB re 20 uPa Column J: seal in-air threshold at this frequency dB re 20 uPa |
author2 |
TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Through-ice communication by Weddell seals may not be practicable |
title_short |
Through-ice communication by Weddell seals may not be practicable |
title_full |
Through-ice communication by Weddell seals may not be practicable |
title_fullStr |
Through-ice communication by Weddell seals may not be practicable |
title_full_unstemmed |
Through-ice communication by Weddell seals may not be practicable |
title_sort |
through-ice communication by weddell seals may not be practicable |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/through-ice-communication-seals-practicable/699737 https://doi.org/10.4225/15/55EF991B8EEAB https://data.aad.gov.au/metadata/records/ASAC_2122-3 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-68.5699; southlimit=-68.5699; westlimit=77.9266; eastLimit=77.9266; projection=WGS84 Temporal: From 1997-12-01 to 1997-12-08 |
long_lat |
ENVELOPE(77.9266,77.9266,-68.5699,-68.5699) |
geographic |
Weddell |
geographic_facet |
Weddell |
genre |
Antarc* Antarctica harbour seal Phoca vitulina Weddell Seals |
genre_facet |
Antarc* Antarctica harbour seal Phoca vitulina Weddell Seals |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/through-ice-communication-seals-practicable/699737 7ebed54f-426b-4c9a-aaaf-e9300220a67f doi:10.4225/15/55EF991B8EEAB ASAC_2122-3 https://data.aad.gov.au/metadata/records/ASAC_2122-3 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/55EF991B8EEAB |
_version_ |
1766245845843312640 |