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WITHDRAWN: Evaluation of 2D Shear Wave Velocity Structure of NW Himalayas Through MASW Study

The present paper emphasizes the interpretation of forty-five closely spaced Active and Passive Multichannel Analysis of Surface Wave (MASW) data sets in the NW Himalayas in the Indian region. The Himalayas originated from the collision of the Indian plate with the Eurasian plate associated with major thrusts (Main Central Thrust (MCT), Main Boundary Thrust (MBT), and Main Frontal Thrust (MFT), South Tibetan Detachment (STD) and other structural features (Berinag thrust, Ramgarh-Munsiari thrust, Tons fault, Almora klippe, Baijnath klippe, and Askoti klippe). The existing structural features are also associated with past to recent seismicity and landslide events. The relation among one-dimensional (1D) shear wave velocity structure, deeper structural features, and associated seismicity was established in the Indian region. However, proper 2D velocity structure for NW Himalayas in the Indian region by using dense data sets till not been established. Hence, the present study focused and discussed the following:

Generation of closed-spaced MASW data sets in parts of NW Himalayas, Indian region

Two Dimensional (2D) shear wave velocity structure of subsurface up to the depth of 30 m by using active MASW data

2D shear wave velocity structure of subsurface up to the depth of 100 m by using passive MASW data

Joint 2D shear wave velocity structure of NW Himalayas up to the depth of 100 m

Evaluation of geotechnical parameters such are Vs-5 to Vs-30, N-value, Stiffness, Predominant frequency, Average Horizontal Spectral Amplification (AHSA), and liquefaction potential (fs)

Relation among 2D shear wave velocity structure associated structural discontinuities and seismicity.

Presenting Author: K.Satish Kumar

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