Dataset

Vessel line-transect surveys of Arctic marine mammals in the Chuckchi Sea, Arctic Marine Biodiversity Observing Network (AMBON) research cruise on the vessel Norseman II from 2017-08-05 to - 2017-08-25

OBIS USA Open in mapper Explore occurrences

This dataset contains marine mammal observation data conducted during shipboard transects in the Chukchi Sea during the 5 August - 25 August 2017 Arctic Marine Biodiversity Observing Network (AMBON) research cruise. The dataset is two comma-separated values (csv) files exported from the marine bird and mammal observation software WinCruz from the entire survey. One data file contains the dates,times, latitude, longitude, species and best-high-low estimates of numbers for cetacean (whales) and pinniped (seals, seal lions, and walrus) sightings. The second data file contains the track of the ship (as geographic coordinates) and the Beaufort sea state at two minute intervals as a measurement of effort. This dataset was transformed from the native format into a table structure using Darwin Core Archive (DwC-A, occurrence core) term names as column names.

Published: June 03, 2025 at 17:40

URL: https://ipt-obis.gbif.us/resource?r=ambon_mammals_2017

336
occurrence records
8
taxa
6
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 336
100.0%
maximumDepthInMeters 336
100.0%
minimumDepthInMeters 336
100.0%
scientificNameID 336
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 336
100.0%

Measurement types

DNA derived data