Large Scale Density Estimation of Blue and Fin Whales (LSD)
Effective management and mitigation of marine mammals in response to potentially negative interactions with human activity requires knowledge of how many animals are present in an area during a specific time period. Many marine mammal species are relatively hard to sight, making standard visual meth...
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ftdtic:ADA618038 2023-05-15T16:13:20+02:00 Large Scale Density Estimation of Blue and Fin Whales (LSD) Thomas, Len Harris, Danielle Miksis-Olds, Jennifer L SAINT ANDREWS UNIV (UNITED KINGDOM) 2014-09-30 text/html http://www.dtic.mil/docs/citations/ADA618038 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA618038 en eng http://www.dtic.mil/docs/citations/ADA618038 Approved for public release; distribution is unlimited. DTIC Biological Oceanography Acoustics *ACOUSTIC DATA *WHALES ACOUSTIC ARRAYS DENSITY ESTIMATES OCEAN BOTTOM PACIFIC OCEAN SEISMOMETERS SPATIAL DISTRIBUTION OBS(OCEAN BOTTOM SEISMOMETERS) SPARSE ARRAYS BLUR WHALES FIN WHALES LSD(LARGE SCALE DENSITY) CTBTO IMS(COMPREHENSIVE NUCLEAR TEST BAN TREATY ORGANIZATION INTERNATIONAL MONITORING SYSTEM) DETECTION PROBABILITY VOCALIZATIONS Text 2014 ftdtic 2016-02-24T18:02:18Z Effective management and mitigation of marine mammals in response to potentially negative interactions with human activity requires knowledge of how many animals are present in an area during a specific time period. Many marine mammal species are relatively hard to sight, making standard visual methods of density estimation difficult and expensive to implement; however many of these same species produce vocalizations that are relatively easy to hear, making density estimation from passive acoustic monitoring data an attractive, cost-effective alternative. A particularly efficient passive acoustic monitoring design is a sparse array , where sensors are distributed evenly over a large area of interest however a consequence of this design is that each vocalization cannot be heard at multiple sensor locations, restricting the choice of methods that can be used to estimate density. Nevertheless, sparse array methods have been developed and demonstrated (Marques et al., 2011, K sel et al., 2011; Harris, 2012; Harris et al., 2013). While these studies represent an important step forward in making the methods more generally applicable at reasonable cost, they have some drawbacks: they either are only applicable to small local ocean areas, or they require unrealistic assumptions about animal distribution around the sensors, or both. The goal of this research is to develop and implement a new method for estimating blue and fin whale density that is effective over large spatial scales and is designed to cope with spatial variation in animal density utilizing sparse array data from the Comprehensive Nuclear Test Ban Treaty Organization International Monitoring System (CTBTO IMS) and Ocean Bottom Seismometers (OBSs). Prepared in collaboration with the Applied Research Laboratory, Pennsylvania State University, State College. Text Fin whale Defense Technical Information Center: DTIC Technical Reports database Pacific |
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Defense Technical Information Center: DTIC Technical Reports database |
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language |
English |
topic |
Biological Oceanography Acoustics *ACOUSTIC DATA *WHALES ACOUSTIC ARRAYS DENSITY ESTIMATES OCEAN BOTTOM PACIFIC OCEAN SEISMOMETERS SPATIAL DISTRIBUTION OBS(OCEAN BOTTOM SEISMOMETERS) SPARSE ARRAYS BLUR WHALES FIN WHALES LSD(LARGE SCALE DENSITY) CTBTO IMS(COMPREHENSIVE NUCLEAR TEST BAN TREATY ORGANIZATION INTERNATIONAL MONITORING SYSTEM) DETECTION PROBABILITY VOCALIZATIONS |
spellingShingle |
Biological Oceanography Acoustics *ACOUSTIC DATA *WHALES ACOUSTIC ARRAYS DENSITY ESTIMATES OCEAN BOTTOM PACIFIC OCEAN SEISMOMETERS SPATIAL DISTRIBUTION OBS(OCEAN BOTTOM SEISMOMETERS) SPARSE ARRAYS BLUR WHALES FIN WHALES LSD(LARGE SCALE DENSITY) CTBTO IMS(COMPREHENSIVE NUCLEAR TEST BAN TREATY ORGANIZATION INTERNATIONAL MONITORING SYSTEM) DETECTION PROBABILITY VOCALIZATIONS Thomas, Len Harris, Danielle Miksis-Olds, Jennifer L Large Scale Density Estimation of Blue and Fin Whales (LSD) |
topic_facet |
Biological Oceanography Acoustics *ACOUSTIC DATA *WHALES ACOUSTIC ARRAYS DENSITY ESTIMATES OCEAN BOTTOM PACIFIC OCEAN SEISMOMETERS SPATIAL DISTRIBUTION OBS(OCEAN BOTTOM SEISMOMETERS) SPARSE ARRAYS BLUR WHALES FIN WHALES LSD(LARGE SCALE DENSITY) CTBTO IMS(COMPREHENSIVE NUCLEAR TEST BAN TREATY ORGANIZATION INTERNATIONAL MONITORING SYSTEM) DETECTION PROBABILITY VOCALIZATIONS |
description |
Effective management and mitigation of marine mammals in response to potentially negative interactions with human activity requires knowledge of how many animals are present in an area during a specific time period. Many marine mammal species are relatively hard to sight, making standard visual methods of density estimation difficult and expensive to implement; however many of these same species produce vocalizations that are relatively easy to hear, making density estimation from passive acoustic monitoring data an attractive, cost-effective alternative. A particularly efficient passive acoustic monitoring design is a sparse array , where sensors are distributed evenly over a large area of interest however a consequence of this design is that each vocalization cannot be heard at multiple sensor locations, restricting the choice of methods that can be used to estimate density. Nevertheless, sparse array methods have been developed and demonstrated (Marques et al., 2011, K sel et al., 2011; Harris, 2012; Harris et al., 2013). While these studies represent an important step forward in making the methods more generally applicable at reasonable cost, they have some drawbacks: they either are only applicable to small local ocean areas, or they require unrealistic assumptions about animal distribution around the sensors, or both. The goal of this research is to develop and implement a new method for estimating blue and fin whale density that is effective over large spatial scales and is designed to cope with spatial variation in animal density utilizing sparse array data from the Comprehensive Nuclear Test Ban Treaty Organization International Monitoring System (CTBTO IMS) and Ocean Bottom Seismometers (OBSs). Prepared in collaboration with the Applied Research Laboratory, Pennsylvania State University, State College. |
author2 |
SAINT ANDREWS UNIV (UNITED KINGDOM) |
format |
Text |
author |
Thomas, Len Harris, Danielle Miksis-Olds, Jennifer L |
author_facet |
Thomas, Len Harris, Danielle Miksis-Olds, Jennifer L |
author_sort |
Thomas, Len |
title |
Large Scale Density Estimation of Blue and Fin Whales (LSD) |
title_short |
Large Scale Density Estimation of Blue and Fin Whales (LSD) |
title_full |
Large Scale Density Estimation of Blue and Fin Whales (LSD) |
title_fullStr |
Large Scale Density Estimation of Blue and Fin Whales (LSD) |
title_full_unstemmed |
Large Scale Density Estimation of Blue and Fin Whales (LSD) |
title_sort |
large scale density estimation of blue and fin whales (lsd) |
publishDate |
2014 |
url |
http://www.dtic.mil/docs/citations/ADA618038 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA618038 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Fin whale |
genre_facet |
Fin whale |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA618038 |
op_rights |
Approved for public release; distribution is unlimited. |
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1765998999807983616 |