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OAS accession Detail for 0077805, meta_version: 8. Current meta_version is: 9
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Title: Northern elephant seal temperature cast data collected as part of the Tagging of Pacific Predators (TOPP) program from February 22 2004 to January 25, 2011 (NODC Accession 0077805)
Abstract: This dataset is a large collection of temperature casts recorded by fast-response archival time-depth recorder tags on northern elephant seals during their natural migrations. Only ascents (upcasts) were retained to ensure a similar format to traditional ship-based casts.

Each file represents data from a single instrument on one adult female elephant seal. Temperature and depth data were obtained from data logging tags manufactured by Wildlife Computers (MK9 or MK10). Temperature and depth values are uncorrected, raw instrument readings.

The position of each cast was estimated using a state-space model smoothing algorithm applied to the ARGOS satellite track of the seal.
Position data were obtained from a combination of GPS loggers and ARGOS PTT transmitters manufactured by Wildlife computers (SPOT4, SPOT5, or MK10) or the Sea Mammal Research Unit (SMRU SRDL)). Position data were irregular in time and contained substantial spatial error. So, we estimated a position for each station by smoothing the data using the CRAWL package in R-Cran and then applied a linear interpolation for each station.
Date received: 20110928
Start date: 20040222
End date: 20110125
Seanames: Coastal Waters of Southeast Alaska and British Columbia, Cordell Bank National Marine Sanctuary, Gulf of Alaska, Gulf of the Farallones National Marine Sanctuary, Monterey Bay National Marine Sanctuary, North Pacific Ocean, Olympic Coast National Marine Sanctuary
West boundary: 174.09
East boundary: -113.69
North boundary: 59.78
South boundary: 26.12
Observation types: biological, physical, profile, surface measurements
Instrument types: APBT, marine animal recording tag, pressure gauge, thermometer
Datatypes: DEPTH - SENSOR, LATITUDE, LONGITUDE, MARINE MAMMALS, water depth, WATER TEMPERATURE
Submitter: Costa, Dr. Daniel P.
Submitting institution: University of California - Santa Cruz
Collecting institutions: University of California - Santa Cruz
Contributing projects: TOPP
Platforms: Autonomous Pinniped (33P2)
Number of observations: 661236
Supplementary information: Data were collected by Daniel Costa at UC Santa Cruz in Santa Cruz, California, USA.

Relevant peer-reviewed journal articles:

A publication containing the details of data collection and processing is in progress.

Padman, L., D. P. Costa, S. T. Bolmer, M. E. Goebel, L. A. Huckstadt, A. Jenkins, B. I. McDonald, and D. R. Shoosmith (2010), Seals map bathymetry of the Antarctic continental shelf, Geophys. Res. Lett., 37, L21601, doi:10.1029/2010GL044921.

Simmons, S. E., Y. Tremblay, and D. P. Costa (2009), Pinnipeds as ocean temperature samplers: Calibrations, validations and data quality, Limnol. Oceanogr. Methods, 7, 648656.
Availability date:
Metadata version: 8
Keydate: 2011-09-26 14:49:05+00
Editdate: 2018-08-11 17:46:35+00