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Telemetry data obtained from Fastloc GPS/GSM tracking of 15 harbour seals (Phoca vitulina) and 12 grey seals (Halichoerus grypus), captured in Baie de Somme in 2019
Tracking data of 15 harbour seals and 12 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 106 days.
Disciplines
Biological oceanography
Keywords
harbour seal, grey seal, phoca vitulina, halichoerus grypus, movement, GPS, tracking, at-sea distribution, marine mammal
Location
58.55N, 49.05S, 4.5E, -5.3W
Devices
Data_type: Type of data provided (either GPS, Dive or Haulout)
Species: Seal species: Pv=Phoca vitulina (harbour seal), Hg = Halichoerus grypus (grey seal)
Capture_site: Location of the seal capture
Tag_number: Individual number of the seal fitted with a tag. One individual could be "numbered" differently on two consecutive field work if fitted with a new tag.
Seal_ID: Telemetry tag number
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 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 | |
---|---|---|---|---|---|
Summary of individual seals captured and fitted with GPS/GSM tags (Baie de Somme, 2019) | 3 Ko | CSV | Quality controlled data | ||
Summary of individual seals captured and fitted with GPS/GSM tags (Baie de Somme, 2019) - Metadata | 789 octets | CSV | Quality controlled data | ||
GPS locations of grey and harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2019-2020 | 14 Mo | CSV | Quality controlled data | ||
GPS locations of grey and harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2019-2020 - Metadata | 778 octets | CSV | Quality controlled data |