An Application of Kriging Method to the Detection of Elevation Changes with Laser Altimeter Data

Details An Application of Kriging Method to the Detection of Elevation Changes with Laser Altimeter Data An Application of Kriging Method to the Detection of Elevation Changes with Laser Altimeter Data

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusm.g32a..05n&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #G32A-05

Physics

5462 Polar Regions, 1223 Ocean/Earth/Atmosphere Interactions (3339), 1640 Remote Sensing, 1699 General Or Miscellaneous

Scientific paper

The Ice, Cloud, and Land Elevation Satellite (ICESat) mission with the Geoscience Laser Altimeter System (GLAS) on-board will be used to investigate ice volume and sea level changes. We investigate the application of kriging to data sets of this type. Kriging, a minimum variance unbiased interpolation method, allows us to take advantage of the entire data set, rather than using only selective cross-over locations. Kriging software from the Geostatistical Software Library and User's Guide (http://www.gslib.com) is being modified and tested on the GLAS-similar Mars Orbiter Laser Altimeter (MOLA) data, and the results will be compared with published elevation changes on Mars based on cross-over analyses. The primary purpose of this study is to test the robustness of kriging in handling very large data sets, and to weigh the advantages/disadvantages of the method against the traditional cross-over approach. MOLA data for mapping periods between February 1999 to August 2001 will be analyzed to produce a time evolution of a kriged map at resolution of approximately 100km by 100km squared blocks. Spectral analysis will be performed on results at the ice caps to verify annual/semi-annual signals published earlier.

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