Arctic Marine Mammal Sighting Census, 1979-1982

U.S. Navy aircraft systematically surveyed the Arctic Ocean for over three years, recording marine mammal sightings in a standardized census format. The F127 format data likely contains detailed species counts, age group breakdowns, and precise geospatial and temporal coordinates for each observation. This dataset provides a historical snapshot of whale population densities, distributions, and activities during a specific period.

Use Cases

• [Modeling historical population density] based on [systematic survey tracks and animal counts by species]
• [Analyzing migratory routes] based on [sighting locations, dates, and animal heading direction]
• [Studying age structure of populations] based on [counts by age group (adults, subadults, juveniles)]
• [Correlating animal presence with habitat] based on [recorded distance to shoreline and ice edge]
• [Verifying and extending survey methodology] based on [standardized F127 format with platform speed, direction, and altitude]

Strengths

• Data collected over a multi-year period (August 1979 to October 1982) from systematic aircraft surveys.
• Processed into the standardized NODC Marine Mammal Sighting and Census (F127) format, ensuring structured recording of sightings, platform info, and environmental context.
• Cross-platform presence (Data.gov, NASA Earthdata) suggests recognized importance and accessibility.

Limitations

• Key metadata like row count, file size, specific column names, and license are unknown across all sources.
• Data is historical (last collection in 1982), though metadata was updated on Data.gov in 2026.
• Descriptions are detailed but sparse on the actual data granularity and completeness of records.

Provenance

Source

U.S. Navy; Naval Ocean Systems Command, collected as part of the MMS Studies program. Processed by the National Oceanographic Data Center (NODC).

Collection Method

Visual observations and other instruments from aircraft.

Time Range

1979-08-02 to 1982-10-18

Freshness

2026-03-06 00:18:15.994014 (Data.gov metadata update); data collection ended 1982-10-18.

Geography

Arctic Ocean