Data · collection
Global Ocean Bathymetry, Magnetics and Gravity Observed from Ships
Listed in NASA Earthdata CMR
This Marine geophysics file contains bathymetry, magnetics and gravity data in the Pacific Ocean.
Description
Data sources are mainly Japanese and United States. Data are stored in MDG77 format.
The data set is composed of bathymetry, geomagnetism and gravity obtained by ship platform in MGD77 format which was developed by Dr. Hittelman in 1977 on behalf of National Geophysical Data Center(NGDC) to promote geophysical data exchange on magnetic tapes. The MGD77 records a cruise data in one file and the file comprises a header record for cruise information and data records for observed data.
Read the rest (1 more)
The volumes of MGD77 data set are 1.5 giga bytes. Data in these files are available as copies of specified data subsets on magnetic tapes, floppy disks,CD-ROMs or printed form.
Links
Documentation and papers
- JODC MGD77 information page. jdoss1.jodc.go.jp/vpage/mgd77.html ↗
documentation · from NASA CMR
- MGD77 Data File Format information page. jodc.go.jp/data_format/mgd77-1998-format.html ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214605561-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214605561-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Gravitational Field · Magnetic Field · Marine Gravity Field · Marine Magnetics · Seafloor Topography · SHIPS · Water Depth
- Inferred from text
- Oceanography 73%
Provenance · 1 source records, 14 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214605561-SCIOPS | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3708 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (73%) |
| concepts[measured_variable].gcmd:earth-science/oceans/bathymetry-seafloor-topography/seafloor-topography | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/bathymetry-seafloor-topography/water-depth | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/marine-geophysics/marine-gravity-field | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/marine-geophysics/marine-magnetics | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/geomagnetism/magnetic-field | 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[platform].gcmd_platform:ships | 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 |