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sur Quand l'imposture climatique devient l'imposture écologique.


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ffi ffi 24 août 2010 21:06

GEOPHYSICAL RESEARCH LETTERS, VOL. 20, NO. 17, PP. 1811-1814, 1993

Measurements of strain at plate boundaries using space based geodetic techniques

Measurements of strain at plate boundaries using space based geodetic techniques

Stefano Robaudo (Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL)

Christopher G. A. Harrison (Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL)

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We have used the space based geodetic techniques of Satellite Laser Ranging (SLR) and Very Long Baseline Interferometry (VLBI) to study strain along subduction and transform plate boundaries and have interpreted the results using a simple elastic dislocation model. Six stations located behind island arcs were analyzed as representative of subduction zones while 13 sites located on either side of the San Andreas fault were used for the transcurrent zones. The length deformation scale was then calculated for both tectonic margins by fitting the relative strain to an exponentially decreasing function of distance from the plate boundary. Results show that space‐based data for the transcurrent boundary along the San Andreas fault help to define better the deformation length scale in the area while fitting nicely the elastic half‐space earth model. For subduction type boundaries the analysis indicates that there is no single scale length which uniquely describes the deformation. This is mainly due to the difference in subduction characteristics for the different areas, and the use of an elastic stress model then helps us understand some of these differences.

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Received 13 January 1993 ; accepted 18 May 1993 ; .

voir http://www.agu.org/pubs/crossref/1993/93GL01380.shtml
voir http://cat.inist.fr/?aModele=afficheN&cpsidt=11335493

Se référer aux pages 53, 54 pour voir si ce que dit James Maxlow est vrai.

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