Data provided by National Oceanic and Atmospheric Administration
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.
About this Dataset
Updated: 2024-02-22
Metadata Last Updated:
2025-11-19T15:29:47.407Z
Date Created:
N/A
Data Provided by:
Dataset Owner:
N/A
| Title | Northern elephant seal temperature cast data collected as part of the Tagging of Pacific Predators (TOPP) program from 2004-02-22 to 2011-01-25 (NCEI Accession 0077805) |
|---|---|
| Description | 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. |
| Modified | 2025-11-19T15:29:47.407Z |
| Publisher Name | N/A |
| Contact | N/A |
| Keywords | 0077805 , DEPTH - SENSOR , LATITUDE , LONGITUDE , MARINE MAMMALS , water depth , WATER TEMPERATURE , APBT , marine animal recording tag , pressure gauge , thermometer , biological , physical , profile , surface measurements , Autonomous Pinniped , University of California - Santa Cruz , University of California - Santa Cruz , Tagging of Pacific Predators (TOPP) , 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 , oceanography , DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce , TOPP > Tagging of Pacific Predators , EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS , EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH , EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE , BATHYTHERMOGRAPHS , PRESSURE GAUGES , THERMOMETERS > THERMOMETERS , OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN , OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA , environment , oceans |
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