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Volumn 302, Issue 5644, 2003, Pages 434-437

Contribution of the Patagonia Icefields of South America to Sea Level Rise

Author keywords

[No Author keywords available]

Indexed keywords

GLACIERS; MAPPING; PRECIPITATION (METEOROLOGY); SEA LEVEL; SURFACE TOPOGRAPHY;

EID: 0142020903     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1087393     Document Type: Article
Times cited : (419)

References (31)
  • 5
    • 0005712999 scopus 로고
    • M. F. Meier, Science 226, 1419 (1984).
    • (1984) Science , vol.226 , pp. 1419
    • Meier, M.F.1
  • 12
    • 0142077396 scopus 로고    scopus 로고
    • unpublished data
    • A. Rivera, unpublished data.
    • Rivera, A.1
  • 15
    • 0142013665 scopus 로고    scopus 로고
    • note
    • 1)] because of the lack of recognizable surface features in the photographs at the higher elevation glacier plateau. The 1995 DEM only covers SPI and does not include all the glacier fronts. The DEMs are referenced to mean sea level with a World Geodetic System 1984 datum. The vertical precision of the DEMs is 19 m (17 m error in regular cartography, and 9 m error in contour interpolation). No information is available about the precision of the Argentinean cartography, but comparison with SRTM on exposed rock reveals a vertical random error of 50 m near Chico, Viedma, and Upsala Glaciers and larger errors to the north, south, and west of these regions, where the cartography is not reliable.
  • 16
    • 0142077395 scopus 로고    scopus 로고
    • note
    • The random error in elevation difference with SRTM is 20 m for the 1975/1995 DEMs and 50 m for the 1968 DEM. The extrapolation error of the elevation changes due to polynomial fitting was calculated for each glacier as the standard error of the model fit (1σ) and ranges from 10 to 30 m. The total error is the quadrature sum of these two errors. For area-average thickness changes, the total error is further divided by the square root of the number of IGMCh contours employed, typically around 20, depending on the glacier coverage by IGMCh and its area-elevation distribution (table S1). Few contours are available on the accumulation plateau.
  • 31
    • 0142045508 scopus 로고    scopus 로고
    • note
    • We thank the Jet Propulsion Laboratory (JPL) processing team for the SRTM data; IGMCH for providing restricted access to the cartography of the icefields; M. Peña for his assistance in digitizing contour lines of the icefields; and L. Rasmussen, H. Conway, and C. Raymond for sharing their results in advance of publication. E.R. performed this work at JPL under a contract with NASA's Solid Earth and Natural Hazard Program. A.R. was supported by Fondo Nacional de Ciencia y Tecnologia, Chile project 1000445.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.