What is it about?
Coda wave estimation through small magnitude earthquakes in an important parameter for seismic Hazard. Recent high quality micro-earthquake data measure spatial variation of coda Q (Qc) to divide the region into main three zones. Seismically high active Kuarik-Chango region reports low Qc and high attenuation. The increase of Qc with increasing lapse time is interpreted as a decrease of heterogeneity with depth. The data is reasonably fit in the power-law decay of turbidity.
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Why is it important?
Unique high micro-earthquake activity in the Tethys Himalaya of Kinnaur region is evaluated through well known single scattering model of coda Q estimation (Aki et al. 1975; Kumar et al., 2005). The spatial variation of coda attenuation parameters of this data set broadly divide the region into three parts which correlated well with crustal and lithosphere structure along with micro-earthquake activity. Variation of coda wave attenuation largely depends on the heterogeneities developed due to the collision of the Indian and Eurasian plates in this part of the Himalaya and attenuation is higher in the Tethys Himalaya than in the High Himalaya.
Perspectives
I hope that this article will make distinguish impact as the seismicity is rarely occurring in the Tethys section of Himalayan arc. The work is for unique region of Himalaya. The results are very interesting. co-author, my Ph.D. student was very excited as his first publication in a good peer review journal
Dr Naresh Kumar
Read the Original
This page is a summary of: Coda Q estimation for Kinnaur region and surrounding part of NW Himalaya, Journal of Seismology, January 2019, Springer Science + Business Media,
DOI: 10.1007/s10950-018-9805-2.
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