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Earthquake induced liquefaction features in the Karewas of Kashmir Valley North-West Himalayas, India: Implication to paleoseismicity
Abstract Earthquake induced liquefaction features found in the Karewas of Kashmir Valley are potential tools for estimating energy center, magnitude and peak ground acceleration of the paleoearthquakes. Size, pattern and spatial distribution of liquefaction features and in-situ geotechnical data were collected at the paleoliquefaction sites to assess the magnitude and peak ground acceleration of the paleoearthquake. The magnitude of paleoearthquakes was estimated to be of the order of (Mw = 6.2) using “Magnitude bound method” and “In-situ testing of geotechnical properties and assessment of liquefaction potential of liquefied beds (source stratum) using cyclic stress method”. The peak ground acceleration computed were in the range of 0.27g to 0.83g using cyclic stress method and 0.30g using attenuation equation NDMA [21].
Highlights Paleoliquefaction features were studied in the Karewa sediments. Estimated Paleomagnitude was of the order of Mw=6.2 Estimated PGA values were in the range of 0.27g to 0.83g.
Earthquake induced liquefaction features in the Karewas of Kashmir Valley North-West Himalayas, India: Implication to paleoseismicity
Abstract Earthquake induced liquefaction features found in the Karewas of Kashmir Valley are potential tools for estimating energy center, magnitude and peak ground acceleration of the paleoearthquakes. Size, pattern and spatial distribution of liquefaction features and in-situ geotechnical data were collected at the paleoliquefaction sites to assess the magnitude and peak ground acceleration of the paleoearthquake. The magnitude of paleoearthquakes was estimated to be of the order of (Mw = 6.2) using “Magnitude bound method” and “In-situ testing of geotechnical properties and assessment of liquefaction potential of liquefied beds (source stratum) using cyclic stress method”. The peak ground acceleration computed were in the range of 0.27g to 0.83g using cyclic stress method and 0.30g using attenuation equation NDMA [21].
Highlights Paleoliquefaction features were studied in the Karewa sediments. Estimated Paleomagnitude was of the order of Mw=6.2 Estimated PGA values were in the range of 0.27g to 0.83g.
Earthquake induced liquefaction features in the Karewas of Kashmir Valley North-West Himalayas, India: Implication to paleoseismicity
Khan, Rais Ahmad (author) / Shah, Mohammad Yousuf (author)
Soil Dynamics and Earthquake Engineering ; 90 ; 101-111
2016-08-07
11 pages
Article (Journal)
Electronic Resource
English
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