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| Titel |
Variations of the crustal thickness in Nepal Himalayas based on tomographic inversion of regional earthquake data |
| VerfasserIn |
I. Koulakov, G. Maksotova, S. Mukhopadhyay, J. Raoof, J. R. Kayal, A. Jakovlev, A. Vasilevsky |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 6, no. 1 ; Nr. 6, no. 1 (2015-02-16), S.207-216 |
| Datensatznummer |
250115397
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| Publikation (Nr.) |
 copernicus.org/se-6-207-2015.pdf |
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| Zusammenfassung |
| We estimate variations of the crustal thickness beneath the Nepal Himalayas
based on tomographic inversion of regional earthquake data. We have obtained
a low-velocity anomaly in the upper part of the model down to depths of 40 to
80 km and proposed that the lower limit of this anomaly represents
variations of the Moho depth. This statement was supported by results of
synthetic modeling. The obtained variations of crustal thickness match fairly
well with the free-air gravity anomalies: thinner crust patterns correspond
to lower gravity values and vice versa. There is also some correlation with
magnetic field: higher magnetic values correspond to the major areas of
thicker crust. We propose that elevated magnetic values can be associated
with more rigid segments of the incoming Indian crust which cause more
compression in the thrust zone and lead to stronger crustal thickening. |
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