Data · collection
NMML Harbor Porpoise Aerial Survey, SE Alaska, 1991
Listed in NASA Earthdata CMR
On 15 August 1991, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey of waters off southeastern Alaska.
Description
A Twin Otter was used to fly a single sawtooth trackline at an altitude of 152.2 m (500ft) and at an airspeed of 100 kn. Line-transect methodology was used, and only those observations made during optimal conditions were analyzed.
Density of harbor porpoises was calculated using line transect estimates based on perpendicular distances of sightings to the cruise track of the airplane.
Links
Get the data
- iobis.org /mapper/?dataset=2266 ↗
Access data from the OBIS and OBIS-SEAMAP websites.
download · from NASA CMR
- seamap.env.duke.edu /datasets/detail/142 ↗
Access data from the OBIS and OBIS-SEAMAP websites.
download · from NASA CMR
Documentation and papers
- VIEW RELATED INFORMATION seamap.env.duke.edu/prod/services/datasets/show_xml_metadata.php?datasetid=142 ↗
documentation · from NASA CMR
- 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
- The ArcGIS metadata format desktop.arcgis.com/en/arcmap/10.3/manage-data/metadata/the-arcgis-metadata-format… ↗
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/C1214586467-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214586467-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Animals Vertebrates · DeHavilland Twin Otter · Fish
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214586467-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 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-vertebrates/fish | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:dhc-6 | 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 |