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Analysis of ICESat Data Using Kalman Filter and Kriging to Study Height Changes in East AntarcticaWe analyze ICESat derived heights collected between Feb. 03-Nov. 04 using a kriging/Kalman filtering approach to investigate height changes in East Antarctica. The model's parameters are height change to an a priori static digital height model, seasonal signal expressed as an amplitude Beta and phase Theta, and height-change rate dh/dt for each (100 km)(exp 2) block. From the Kalman filter results, dh/dt has a mean of -0.06 m/yr in the flat interior of East Antarctica. Spatially correlated pointing errors in the current data releases give uncertainties in the range 0.06 m/yr, making height change detection unreliable at this time. Our test shows that when using all available data with pointing knowledge equivalent to that of Laser 2a, height change detection with an accuracy level 0.02 m/yr can be achieved over flat terrains in East Antarctica.
Document ID
20070028899
Acquisition Source
Johnson Space Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Herring, Thomas A.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
August 23, 2013
Publication Date
November 24, 2005
Subject Category
Geosciences (General)
Funding Number(s)
CONTRACT_GRANT: NAS5-99007
Distribution Limits
Public
Copyright
Other

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