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Telemetry data obtained from Fastloc GPS/GSM tracking of 7 grey seals (Halichoerus grypus) captured in the Seine estuary (France) in 2022 and 2023
Tracking data of 7 grey seals were obtained from the deployment of Fastloc GPS/GSM tags developed by the Sea Mammal Research Unit (UK). Full tag description is available at: http://www.smru.st-andrews.ac.uk/Instrumentation/GPSPhoneTag/. The tags include a wet-dry sensor from which haulout events are recorded, a pressure sensor providing detailed dive data, as well as a Fastloc GPS recording irregular locations when the seal is not underwater. Data is stored onboard and transmitted via the GSM network when the seal is in the reception range. The data provided here are the individual GPS locations of the seals fitted with these tags for an average duration of 135 days.
Disciplines
Biological oceanography
Keywords
grey seal, halichoerus grypus, movement, GPS, at-sea distribution, marine mammal
Location
57.660093N, 46.893982S, 7.482902E, -11.545418W
Devices
Data_type: Type of data provided (here GPS location)
Species: Seal species: Hg = Halichoerus grypus (grey seal)
Capture_site: Location of the seal capture
Seal_ID: Seal ID based on the species, location and number of previous individuals fitted with tags
D_DATE: Date and time (UTC 0) of the recorded Fastloc GPS location
LAT: Latitude of the Fastloc GPS location (in decimal degrees)
LON: Longitude of the Fastloc GPS location (in decimal degrees)
V_MASK: SMRU filter of the locations. V_Mask=0 is plausible, V_Mask=20 or 50 is rejected due to unrealistic swimming speed (but may still be true when the seal swims in fast tidal currents!), V_Mask=-1 could not be tested due to the lack of previous/next location
Data
File | Size | Format | Processing | Access | |
---|---|---|---|---|---|
GPS locations of grey seals tracked with GPS/GSM tags from the Seine estuary (France) in 2022-2023 | 3 Mo | CSV | Raw data | ||
GPS locations of grey seals tracked with GPS/GSM tags from the Seine estuary (France) in 2022-2023 - Metadata | 754 octets | CSV | Processed data | ||
Summary of individual seals captured and fitted with GPS/GSM tags (Seine Estuary, 2022-23) | 893 octets | CSV | Processed data | ||
Summary of individual seals captured and fitted with GPS/GSM tags (Seine Estuary, 2022-23) - Metadata | 703 octets | CSV | Processed data |