Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags
A long-baseline (LBL) acoustic system has been developed for the tracking of humpback whales (Megaptera novaeangliae) that have been tagged with digital acoustic recording devices (DTAGs), providing quantitative observations of submerged whale behavior during bubble net feeding. The system includes...
Published in: | IEEE Journal of Oceanic Engineering |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/underwater-tracking-of-humpback-whales-megaptera-novaeangliae-with-highfrequency-pingers-and-acoustic-recording-tags(26537f1a-5a94-41fc-8f12-decde791395e).html https://doi.org/10.1109/JOE.2010.2068610 |
id |
ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/26537f1a-5a94-41fc-8f12-decde791395e |
---|---|
record_format |
openpolar |
spelling |
ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/26537f1a-5a94-41fc-8f12-decde791395e 2024-06-23T07:54:33+00:00 Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags Schmidt, Val Weber, Thomas C. Wiley, David N. Johnson, Mark P. 2010-10 https://research-portal.st-andrews.ac.uk/en/researchoutput/underwater-tracking-of-humpback-whales-megaptera-novaeangliae-with-highfrequency-pingers-and-acoustic-recording-tags(26537f1a-5a94-41fc-8f12-decde791395e).html https://doi.org/10.1109/JOE.2010.2068610 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/underwater-tracking-of-humpback-whales-megaptera-novaeangliae-with-highfrequency-pingers-and-acoustic-recording-tags(26537f1a-5a94-41fc-8f12-decde791395e).html info:eu-repo/semantics/restrictedAccess Schmidt , V , Weber , T C , Wiley , D N & Johnson , M P 2010 , ' Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags ' , IEEE Journal of Oceanic Engineering , vol. 35 , no. 4 , pp. 821-836 . https://doi.org/10.1109/JOE.2010.2068610 article 2010 ftunstandrewcris https://doi.org/10.1109/JOE.2010.2068610 2024-06-13T00:33:52Z A long-baseline (LBL) acoustic system has been developed for the tracking of humpback whales (Megaptera novaeangliae) that have been tagged with digital acoustic recording devices (DTAGs), providing quantitative observations of submerged whale behavior during bubble net feeding. The system includes three high-frequency acoustic sources deployed from small boats that follow the whale after the animal has been tagged. Integrated global positioning systems (GPSs) provide positioning and synchronized operation of the sources. Time-encoded acoustic signals from the sources are recorded along with whale vocalizations and ambient noise on the whale tag. Time-of-flight measurements, as measured by the tag acoustic data, are converted to range from the whale to each source with a measured sound-speed profile. A nonlinear least squares solution is then solved for the whale's position with a nominal positional fix rate of once per second. The system is demonstrated with data collected from a tagged animal in summer 2007. Dead-reckoned track generation methods commonly used in previous studies are shown to capture the qualitative nature of the whale track, albeit with poor absolute positional accuracy, and to distort the track when the whale's movement is predominantly vertical. In contrast, the LBL data can provide quantitative measures of whale behavior. Transit speeds between bubble net feeding events for this case study are found to range from 0.7 to 1.9 m . s(-1) (n = 8). The mean diameter of bubble net curtains are measured to range from 9.6 to 10.9 m. Whale speeds during bubble net rotations vary from 1.0 to 1.9 m . s(-1) (n = 6). Article in Journal/Newspaper Megaptera novaeangliae University of St Andrews: Research Portal IEEE Journal of Oceanic Engineering 35 4 821 836 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
A long-baseline (LBL) acoustic system has been developed for the tracking of humpback whales (Megaptera novaeangliae) that have been tagged with digital acoustic recording devices (DTAGs), providing quantitative observations of submerged whale behavior during bubble net feeding. The system includes three high-frequency acoustic sources deployed from small boats that follow the whale after the animal has been tagged. Integrated global positioning systems (GPSs) provide positioning and synchronized operation of the sources. Time-encoded acoustic signals from the sources are recorded along with whale vocalizations and ambient noise on the whale tag. Time-of-flight measurements, as measured by the tag acoustic data, are converted to range from the whale to each source with a measured sound-speed profile. A nonlinear least squares solution is then solved for the whale's position with a nominal positional fix rate of once per second. The system is demonstrated with data collected from a tagged animal in summer 2007. Dead-reckoned track generation methods commonly used in previous studies are shown to capture the qualitative nature of the whale track, albeit with poor absolute positional accuracy, and to distort the track when the whale's movement is predominantly vertical. In contrast, the LBL data can provide quantitative measures of whale behavior. Transit speeds between bubble net feeding events for this case study are found to range from 0.7 to 1.9 m . s(-1) (n = 8). The mean diameter of bubble net curtains are measured to range from 9.6 to 10.9 m. Whale speeds during bubble net rotations vary from 1.0 to 1.9 m . s(-1) (n = 6). |
format |
Article in Journal/Newspaper |
author |
Schmidt, Val Weber, Thomas C. Wiley, David N. Johnson, Mark P. |
spellingShingle |
Schmidt, Val Weber, Thomas C. Wiley, David N. Johnson, Mark P. Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags |
author_facet |
Schmidt, Val Weber, Thomas C. Wiley, David N. Johnson, Mark P. |
author_sort |
Schmidt, Val |
title |
Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags |
title_short |
Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags |
title_full |
Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags |
title_fullStr |
Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags |
title_full_unstemmed |
Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags |
title_sort |
underwater tracking of humpback whales (megaptera novaeangliae) with high-frequency pingers and acoustic recording tags |
publishDate |
2010 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/underwater-tracking-of-humpback-whales-megaptera-novaeangliae-with-highfrequency-pingers-and-acoustic-recording-tags(26537f1a-5a94-41fc-8f12-decde791395e).html https://doi.org/10.1109/JOE.2010.2068610 |
genre |
Megaptera novaeangliae |
genre_facet |
Megaptera novaeangliae |
op_source |
Schmidt , V , Weber , T C , Wiley , D N & Johnson , M P 2010 , ' Underwater Tracking of Humpback Whales (Megaptera Novaeangliae) With High-Frequency Pingers and Acoustic Recording Tags ' , IEEE Journal of Oceanic Engineering , vol. 35 , no. 4 , pp. 821-836 . https://doi.org/10.1109/JOE.2010.2068610 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/underwater-tracking-of-humpback-whales-megaptera-novaeangliae-with-highfrequency-pingers-and-acoustic-recording-tags(26537f1a-5a94-41fc-8f12-decde791395e).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1109/JOE.2010.2068610 |
container_title |
IEEE Journal of Oceanic Engineering |
container_volume |
35 |
container_issue |
4 |
container_start_page |
821 |
op_container_end_page |
836 |
_version_ |
1802646728659173376 |