Data · collection
Collaborative Research: West Antarctic Ice Sheet Stability
Listed in NASA Earthdata CMR
The data set describes the cosmogenic 3He, 21Ne, and 10Be exposure ages of erratics and bedrock samples from the Ohio Range near the head of Mercer Ice Stream (formerly Ice Stream A) in the West Antarctic Ice Sheet (WAIS).
Description
The field location is situated in the Bottleneck, a unique, relatively narrow passage in the Transantarctic Mountains connecting the West and East Antarctic ice sheets. The location lies near the ice divide.
The location of the glacial erractics constrain interior ice elevation in the past while the exposure ages constrain the timing of the ice highstand. Exposure ages of erractics along Mercer Ridge, on the Buckyee Table, provide a local proxy climate record. Glaciers on the Mercer Ridge are sensitive to changes in accumulation of snow and predominant wind direction.
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Compared to the record of the adjacent WAIS ice sheet fluctuations, the timing of alpine glacier advance yields information on climate changes in the Ohio Range that can be used to test climate reconstructions based on Antarctic ice core records.
Links
Get the data
- GET DATA people.fas.harvard.edu/~mukhop/Exposure%20ages.pdf ↗
download · from NASA CMR
Documentation and papers
- nsf.gov /awardsearch/showAward.do?AwardNumber=0338271 ↗
Award Abstract #0338271 - Collaborative Research: West Antarctic Ice Sheet Stability: The Glacial Geologic Record from the Ohio Range of the Horlick Mountains in the Bottleneck
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214588770-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214588770-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Glacier Elevation/Ice Sheet Elevation · Glaciers · Glaciers Ice Sheets · Glacier Topography/Ice Sheet Topography · Ice Sheets · Not provided · Snow Ice
- Inferred from text
- Climate change science 71% · Tabular 65%
Provenance · 1 source records, 15 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214588770-SCIOPS | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3702 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (71%) |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glacier-elevation-ice-sheet-elevation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glaciers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glacier-topography-ice-sheet-topography | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/ice-sheets | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:tabular | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| 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 |