Southeast Greenland Bed Elevation - v2
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下载链接:
https://datadryad.org/dataset/doi:10.7280/D1NW9K
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资源简介:
We employ NASA's Operation IceBridge (OIB) high‐resolution airborne
gravity from 2016, NASA's Ocean Melting Greenland (OMG) bathymetry
from 2015, ice thickness from Operation IceBridge (OIB) from 2010‐2015,
and BedMachine v3 to analyze 20 major southeast Greenland glaciers. The
results reveal glacial fjords several hundreds of meters deeper than
previously thought; the full extent of the marine‐based portions of the
glaciers; deep troughs enabling warm, salty Atlantic Water (AW) to reach
the glacier fronts and melt them from below; and few shallow sills that
limit the access of AW. The new oceanographic and topographic data help to
fully resolve the complex pattern of historical ice front positions from
the 1930s to 2017: glaciers exposed to AW and resting on retrograde beds
have retreated rapidly, while glaciers perched on shallow sills or
standing in colder waters or with major sills in the fjords have remained
stable. Please cite the following paper when using this dataset: Millan
R., E. Rignot, J. Mouginot, M. Wood, A.A Bjørk, and M. Morlighem (2018),
Vulnerability of Southeast Greenland glaciers to warm Atlantic Water from
Operation IceBridge and Ocean Melting Greenland data, Geophys.
Res. Lett., 45, doi:10.1002/2017GL076561. Projection
informations can be found below: Size is 2760, 4044 Coordinate
System is: PROJCS["WGS 84 / NSIDC Sea Ice Polar Stereographic
North", GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563, PROJECTION["Polar_Stereographic"], PARAMETER["latitude_of_origin",70], PARAMETER["central_meridian",-45], PARAMETER["scale_factor",1], PARAMETER["false_easting",0], PARAMETER["false_northing",0], AUTHORITY["EPSG","3413"]] Origin = (-109288.637000000002445,-2616698.799999999813735) Pixel Size = (150.000000000000000,-150.000000000000000) Metadata: AREA_OR_POINT=Area Image Structure Metadata: INTERLEAVE=BAND Corner Coordinates: Upper Left ( -109288.637,-2616698.800) ( 47d23'29.82"W, 66d 9'34.51"N) Lower Left ( -109288.637,-3223298.800) ( 46d56'30.90"W, 60d50'52.57"N) Upper Right ( 304711.363,-2616698.800) ( 38d21'28.41"W, 66d 1'23.84"N) Lower Right ( 304711.363,-3223298.800) ( 39d35'58.74"W, 60d44'22.03"N) Center ( 97711.363,-2919998.800) ( 43d 5' 0.37"W, 63d29'36.85"N)
提供机构:
Dryad
创建时间:
2018-03-23



