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Concept for the subresolution measurement of earthquake strain fields using SPOT panchromatic imagery (1991)

Blom, Ronald G. ; Crippen, Robert E.

In: Other Sources

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Publication Date: 2011-08-24

Description: The use of satellite-derived imagery for measuring subresolution horizontal terrain displacments associated with present-day earthquakes is discussed with reference to data from the French SPOT satellite whose sensor array provides 10-m panchromatic imagery. The measured terrain displacements can be up to several meters, but usually no more than 6-8 m even for major earthquakes. The general approach is to spatially match the after image to the before image at each point on a half-kilometer grid by iteratively interpolating one and testing its correlation with the other. The discussion covers the basic algorithm, results of initial tests, error types and limitations, and future work.

Keywords: GEOPHYSICS

Type: In: Earth and atmospheric remote sensing; Proceedings of the Meeting, Orlando, FL, Apr. 2-4, 1991 (A93-24176 08-42); p. 370-377.

Format: text

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