Data · collection · 2009
Amery Ice Shelf Grounding Zone defined as interpreted slope break in MODIS images
Listed in NASA Earthdata CMR
Grounding Zone of the Amery Ice Shelf, East Antarctica defined by break of surface slope as determined through interpretation of MODIS images.
Description
It defines the landward edge of the grounding zone and therefore the maximum extent of the ice shelf. The MODIS data from the 250 m Channel 2 were processed to a reflectance product and remapped to a Polar Stereographic Projection.
The image contrast was stretched so that subtle variations in reflectance could be perceived. The variation in reflectance was used as an indicator of variation in slope. The break of slope of the snow surface was picked interactively on an image display at a frequency sufficient to define the shape of the grounding zone margin.
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The series of points are provided as a Point shapefile file as well as a set of arcs connecting the points. The point positions are given in geographic coordinates. This work was completed as part of ASAC projects 2224 and 3067 (ASAC_2224, ASAC_3067).
Links
Get the data
- Download point for the shapefiles. data.aad.gov.au/eds/2191/download ↗
download · from NASA CMR
Where it is published
- DOI doi.org/10.4225/15/57a42c3b95fa4 ↗
DOI / persistent id · from NASA CMR
Documentation and papers
- data.aad.gov.au /aadc/metadata/citation.cfm?entry_id=aad_ais_gz_modis_slope_bre… ↗
Citation reference for this metadata record and dataset
documentation · from NASA CMR
- Public information for ASAC project 3067 secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=3067 ↗
project · from NASA CMR
- Public information for ASAC project 2224 secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2224 ↗
project · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214311485-AU_AADC.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214311485-AU_AADC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Earth Observing System, Aqua · Earth Observing System, Terra (AM-1) · Glaciers · Glaciers Ice Sheets · Glacier Topography/Ice Sheet Topography · LANDSAT-7 · Moderate-Resolution Imaging Spectroradiometer · Not provided
- Inferred from text
- Image 75%
Provenance · 1 source records, 17 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214311485-AU_AADC | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:modis | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| 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/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[modality].local:modality:image | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:aqua | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:landsat-7 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:terra | 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 | |
| publication_date | 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 |