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| Titel |
Predicting heat flow in the 2001 Bhuj earthquake (Mw=7.7) region of Kachchh (Western India), using an inverse recurrence method |
| VerfasserIn |
N. Vedanti, O. P. Pandey, R. P. Srivastava, P. Mandal, S. Kumar, V. P. Dimri |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 18, no. 5 ; Nr. 18, no. 5 (2011-09-23), S.611-625 |
| Datensatznummer |
250013969
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| Publikation (Nr.) |
 copernicus.org/npg-18-611-2011.pdf |
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| Zusammenfassung |
| Terrestrial heat flow is considered an important parameter in studying the
regional geotectonic and geodynamic evolutionary history of any region.
However, its distribution is still very uneven. There is hardly any
information available for many geodynamically important areas. In the
present study, we provide a methodology to predict the surface heat flow in
areas, where detailed seismic information such as depth to the
lithosphere-asthenosphere boundary (LAB) and crustal structure is known. The
tool was first tested in several geotectonic blocks around the world and
then used to predict the surface heat flow for the 2001 Bhuj earthquake
region of Kachchh, India, which has been seismically active since historical
times and where aftershock activity is still continuing nine
years after the 2001 main event. Surface heat flow for this region is estimated
to be about 61.3 mW m−2. Beneath this region, heat flow input from the
mantle as well as the temperatures at the Moho are quite high at around 44 mW m−2 and 630 °C, respectively, possibly due to thermal
restructuring of the underlying crust and mantle lithosphere. In absence of
conventional data, the proposed tool may be used to estimate a first order
heat flow in continental regions for geotectonic studies, as it is also
unaffected by the subsurface climatic perturbations that percolate even up
to 2000 m depth. |
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