Data · collection
SMRU Grey Seal Tracking in the North Sea, 1991-1993
Listed in NASA Earthdata CMR
The movements of 14 grey seals Halichoerus grypus Fab. caught at the Farnes in north-east England (12) and Abertay in eastern Scotland (2) between August 1991 and July 1993 were investigated using Argos Satellite Relay Data Loggers (SRDL).
Description
The data are a spreadsheet of points representing seal locations. The low and irregular uplink rate from an SRDL on a seal to the Argos satellites can result in potentially significant errors in some location fixes.
Therefore, locations were filtered using an algorithm based on a ?maximum speed parameter? of 2 m s-1. This filter rejected 17% of the primary locations that would have required an unrealistic rate of travel to achieve. However, this does not remove all invalid locations hence there are still some datapoints occurring inland.
Read the rest (1 more)
There are 9454 locations in the spreadsheet covering all months of the year except February and March.
Links
Get the data
- iobis.org /mapper/?dataset=2145 ↗
Access data from the OBIS and OBIS-SEAMAP websites.
download · from NASA CMR
- seamap.env.duke.edu /datasets/detail/70 ↗
Access data from the OBIS and OBIS-SEAMAP websites.
download · from NASA CMR
Documentation and papers
- seamap.env.duke.edu ↗
Ocean Biogeographic Information System - Spatial Ecological Analysis of Megavertebrate Populations (OBIS-SEAMAP)
documentation · from NASA CMR
- Biological Data Profile usgs.gov/core_science_systems/csas/metadata/standards.html ↗
documentation · from NASA CMR
- Ocean Biogeographic Information System (OBIS) iobis.org ↗
documentation · from NASA CMR
- OBIS-SEAMAP Map Service seamap.env.duke.edu/search ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214589867-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214589867-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- RADIO TRANSMITTERS · Seals/Sea Lions/Walruses
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214589867-SCIOPS | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-vertebrates/mammals/carnivores/seals-sea-lions-walruses | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:radio-transmitters | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |