Application of Microtremor Method in Shear Wave Velocity  Structure Survey at Loess Regions

Journal of Shanghai Jiaotong University ›› 2011, Vol. 45 ›› Issue (05): 696-700.

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Application of Microtremor Method in Shear Wave Velocity Structure Survey at Loess Regions

WU Zhi-Jian-1, 2 , ZENG Li-Feng-1, WANG Lan-Min-1, 2 , YU Kai-3, CHEN Tuo-1

1. Open Laboratory of Loess Earthquake Engineering, Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China; 2. Lanzhou Innovation Base of Institute of Earthquake Science, China Earthquake Administration, Lanzhou 730000, China; 3. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China)

Received:2010-10-17 Online:2011-05-30 Published:2011-05-30

Abstract

Abstract: Based on continuous microtremor survey and highdensity microtremor survey respectively at the typical loess areas in the west of China, the time stability and space distribution of microtremor data were studied. The shear wave velocity profile of underground loess layer was obtained using the inversion method of H/V frequency spectrum of microtremor, and contrasting the existing wave velocity data of borehole at this region as well. The results show that the microtremor signal is stable in time range at inland areas of China, and microtremor survey is available and effective for obtaining underground shear wave velocity profile at deep loess sediment ground.

Key words: microtremor, loess, shear wave velocity profile, H/V frequency spectrum analysis

CLC Number:

TU435

WU Zhi-Jian-1, 2 , ZENG Li-Feng-1, WANG Lan-Min-1, 2 , YU Kai-3, CHEN Tuo-1. Application of Microtremor Method in Shear Wave Velocity Structure Survey at Loess Regions[J]. Journal of Shanghai Jiaotong University, 2011, 45(05): 696-700.

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Application of Microtremor Method in Shear Wave Velocity Structure Survey at Loess Regions

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