Data · collection
GRAVSAT: Regional Gravity Anomaly Surveys from Satellite Altimetry
Listed in NASA Earthdata CMR
GRAVSAT provides gravity survey information for the offshore oil and gas exploration industry.
Description
Based on the analysis of radar altimetry from the ERS-1 Geodetic Phase, completed in March 1995, high resolution gravity information is derived from the along track sea surface slopes measured by the satellite. At the equator, tracks are approximately 8km apart, reducing to 4km at 60 degrees of latitude, thus providing similar sampling to many conventional ship surveys.
GRAVSAT gravity anomaly data have been validated against ship measurements over several areas of the United Kingdom Continental Shelf, for which the British Geological Survey have comprehensive datasets.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214584987-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214584987-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- ALTIMETERS · Control Surveys · European Remote Sensing Satellite-1 · Geodetic Satellite · Gravitational Field · Natural Gas · Not provided · Petroleum · Sedimentary Rocks
- Inferred from text
- Gravimetrics 77%
Provenance · 1 source records, 16 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214584987-SCIOPS | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:field:370606 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (77%) |
| concepts[instrument].gcmd_instrument:altimeters | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/earth-gases-liquids/natural-gas | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/earth-gases-liquids/petroleum | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/gravity-gravitational-field/control-surveys | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/gravity-gravitational-field/gravitational-field | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/sedimentary-rocks | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:ers-1 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:geosat | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| 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 |