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Crustal deformation at the Nankai subduction zone, southwest Japan, derived from GPS measurements
- Source :
- Geophysical research letters. 23(21):3059-3062
- Publication Year :
- 1996
- Publisher :
- American Geophysical Union, 1996.
-
Abstract
- The interseismic strain accumulation process at the Nankai subduction zone, the plate-boundary region between the Philippine Sea and the Eurasian plates off Southwest Japan, has been revealed by GPS measurements spanning five years. Large strains characterized by a contraction of 2.2 ∼ 3.4 × 10−7/yr have accumulated in a narrow region extending parallel to the strike of the plate boundary. The contraction axes lie in a northwest-southeast direction nearly parallel to the direction of relative motion of the Philippine Sea plate with respect to the Eurasian plate. GPS-derived deformation data, including both rate and direction, are consistent with the expected earthquake deformation cycle at the Nankai subduction zone. Current interplate coupling in this zone is strong; much of the relative plate motion has been taken up by deformation of the marginal parts of the Eurasian plate.
Details
- Language :
- English
- ISSN :
- 00948276
- Volume :
- 23
- Issue :
- 21
- Database :
- OpenAIRE
- Journal :
- Geophysical research letters
- Accession number :
- edsair.doi.dedup.....6ee7f580aad313280d0788b6b9252389