Sperm whale seismic study in Gulf of Mexico-acoustics focus General background My role: 3D tracking tagged/untagged animals—working a few months at a time Single array localization-2000 Tag/array integration-2001 Dual-array localization-2002-? Upcoming plans Aaron Thode, Marine Physical Lab, SIO, UCSD MMS Minerals Management Service Marine Fisheries Service
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Sperm whale seismic study in Gulf of Mexico-acoustics focus General background My role: 3D tracking tagged/untagged animalsworking a few months at a time.
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Sperm whale seismic study in Gulf of Mexico-acoustics focus
General background My role: 3D tracking tagged/untagged
animals—working a few months at a time Single array localization-2000 Tag/array integration-2001 Dual-array localization-2002-?
Upcoming plans
Aaron Thode, Marine Physical Lab, SIO, UCSD
MMS
Minerals Management ServiceMarine Fisheries Service
Background-SWAMP cruises 2000-2001
Sponsors Minerals Management Service International Association of Geophysical Contractors Marine Fisheries, SE, 2000-2001
Focus: effect of seismic exploration on sperm whales Endangered species Acoustically active “Resident” populations
Mississippi Canyon De Soto
photo: Keith Mullin,SE Fisheries Service
Present SWSS study centers on two types of tags
Bruce Mate’s satellite tag (STAG) Long duration deployments—long-term habitat shift? Over 15 animals tagged, mostly on one day
WHOI digital recording tag (DTAG) Also pressure, orientation, acceleration High-resolution behavioral responses, energy studies,
3D pseudeotracks Visual, biopsy, acoustic component Nineteen animals tagged in 2002, three simultaneously
under controlled seismic exposure, many more under uncontrolled exposures.
Gulf of Mexico an acoustically unfavorable propagation environment
Measured and computed detection ranges predict 3-10km, depending on
source depth
Three different towed array systems 30-100m depth, give ~6km range