Assessment of Argos location accuracy from satellite tags deployed on captive gray seals
The Argos satellite system is commonly used to track and relay behavioral data from marine mammals, but their underwater habit results in a high proportion of locations of non-guaranteed accuracy (location classes (LC) 0, A, and B). The accuracy of these locations is poorly, documented in marine mam...
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/03cf024a-21e2-4521-944c-65a12f91cce3 2023-05-15T16:05:44+02:00 Assessment of Argos location accuracy from satellite tags deployed on captive gray seals Vincent, C McConnell, Bernie J Ridoux, V Fedak, Michael Andre 2002-01 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/assessment-of-argos-location-accuracy-from-satellite-tags-deployed-on-captive-gray-seals(03cf024a-21e2-4521-944c-65a12f91cce3).html http://www.scopus.com/inward/record.url?scp=0036163637&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Vincent , C , McConnell , B J , Ridoux , V & Fedak , M A 2002 , ' Assessment of Argos location accuracy from satellite tags deployed on captive gray seals ' , Marine Mammal Science , vol. 18 , pp. 156-166 . Argos satellite telemetry location estimate accuracy gray seal Halichoerus grypus marine mammals animal tracking SOUTHERN ELEPHANT SEALS HALICHOERUS-GRYPUS FORAGING ECOLOGY MOVEMENTS TELEMETRY PERFORMANCE BEHAVIOR article 2002 ftunstandrewcris 2021-12-26T14:12:59Z The Argos satellite system is commonly used to track and relay behavioral data from marine mammals, but their underwater habit results in a high proportion of locations of non-guaranteed accuracy (location classes (LC) 0, A, and B). The accuracy of these locations is poorly, documented in marine mammals. We assessed the accuracy of all LCs on four juvenile gray seals fitted with Argos satellite relay data loggers and held in captivity in an outdoor tank for a total of 61 seal-days, Four hundred and twenty-six locations were obtained from seals in captivity, and their latitude and longitude error was assessed before and after filtering, following McConnell et al. (1992). There was significantly more error in longitude than latitude in all LCs except LC A. The ratio of the standard deviations of longitude: latitude ranged from 1.77 (LC 3) to 2.58 (LC 1). Filtering had very little effect on errors in LCs 3-1, but in the remaining LCs filtering resulted in error reductions ranging from 8% to 63%. In LCs 0, A, and B, error reduction was greater in the 95th percentile errors, especially in longitude. The averages of the latitude and longitude 68th percentile errors and those predicted by Argos (in brackets) were 226 (150), 372 (350), and 757 (1000) in for LCs 3, 2, and I respectively. Both latitude and longitude errors of LCs > 0 were normally distributed. Both filtered and unfiltered LC A locations were of a similar accuracy to LC 1 locations, and considerably better than LC 0 locations. Article in Journal/Newspaper Elephant Seals Southern Elephant Seals University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Argos satellite telemetry location estimate accuracy gray seal Halichoerus grypus marine mammals animal tracking SOUTHERN ELEPHANT SEALS HALICHOERUS-GRYPUS FORAGING ECOLOGY MOVEMENTS TELEMETRY PERFORMANCE BEHAVIOR |
spellingShingle |
Argos satellite telemetry location estimate accuracy gray seal Halichoerus grypus marine mammals animal tracking SOUTHERN ELEPHANT SEALS HALICHOERUS-GRYPUS FORAGING ECOLOGY MOVEMENTS TELEMETRY PERFORMANCE BEHAVIOR Vincent, C McConnell, Bernie J Ridoux, V Fedak, Michael Andre Assessment of Argos location accuracy from satellite tags deployed on captive gray seals |
topic_facet |
Argos satellite telemetry location estimate accuracy gray seal Halichoerus grypus marine mammals animal tracking SOUTHERN ELEPHANT SEALS HALICHOERUS-GRYPUS FORAGING ECOLOGY MOVEMENTS TELEMETRY PERFORMANCE BEHAVIOR |
description |
The Argos satellite system is commonly used to track and relay behavioral data from marine mammals, but their underwater habit results in a high proportion of locations of non-guaranteed accuracy (location classes (LC) 0, A, and B). The accuracy of these locations is poorly, documented in marine mammals. We assessed the accuracy of all LCs on four juvenile gray seals fitted with Argos satellite relay data loggers and held in captivity in an outdoor tank for a total of 61 seal-days, Four hundred and twenty-six locations were obtained from seals in captivity, and their latitude and longitude error was assessed before and after filtering, following McConnell et al. (1992). There was significantly more error in longitude than latitude in all LCs except LC A. The ratio of the standard deviations of longitude: latitude ranged from 1.77 (LC 3) to 2.58 (LC 1). Filtering had very little effect on errors in LCs 3-1, but in the remaining LCs filtering resulted in error reductions ranging from 8% to 63%. In LCs 0, A, and B, error reduction was greater in the 95th percentile errors, especially in longitude. The averages of the latitude and longitude 68th percentile errors and those predicted by Argos (in brackets) were 226 (150), 372 (350), and 757 (1000) in for LCs 3, 2, and I respectively. Both latitude and longitude errors of LCs > 0 were normally distributed. Both filtered and unfiltered LC A locations were of a similar accuracy to LC 1 locations, and considerably better than LC 0 locations. |
format |
Article in Journal/Newspaper |
author |
Vincent, C McConnell, Bernie J Ridoux, V Fedak, Michael Andre |
author_facet |
Vincent, C McConnell, Bernie J Ridoux, V Fedak, Michael Andre |
author_sort |
Vincent, C |
title |
Assessment of Argos location accuracy from satellite tags deployed on captive gray seals |
title_short |
Assessment of Argos location accuracy from satellite tags deployed on captive gray seals |
title_full |
Assessment of Argos location accuracy from satellite tags deployed on captive gray seals |
title_fullStr |
Assessment of Argos location accuracy from satellite tags deployed on captive gray seals |
title_full_unstemmed |
Assessment of Argos location accuracy from satellite tags deployed on captive gray seals |
title_sort |
assessment of argos location accuracy from satellite tags deployed on captive gray seals |
publishDate |
2002 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/assessment-of-argos-location-accuracy-from-satellite-tags-deployed-on-captive-gray-seals(03cf024a-21e2-4521-944c-65a12f91cce3).html http://www.scopus.com/inward/record.url?scp=0036163637&partnerID=8YFLogxK |
genre |
Elephant Seals Southern Elephant Seals |
genre_facet |
Elephant Seals Southern Elephant Seals |
op_source |
Vincent , C , McConnell , B J , Ridoux , V & Fedak , M A 2002 , ' Assessment of Argos location accuracy from satellite tags deployed on captive gray seals ' , Marine Mammal Science , vol. 18 , pp. 156-166 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766401634128101376 |