Crustal thickness and Poisson's ratio in southwest China based on data from dense seismic arrays

2017 ◽  
Vol 122 (9) ◽  
pp. 7219-7235 ◽  
Author(s):  
Weilai Wang ◽  
Jianping Wu ◽  
Lihua Fang ◽  
Guijuan Lai ◽  
Yan Cai
Keyword(s):  
Poisson’S Ratio ◽  
Southwest China ◽  
Crustal Thickness ◽  
Poisson's Ratio ◽  
Seismic Arrays

AVERAGE CRUSTAL THICKNESS AND POISSON'S RATIO BENEATH A BROADBAND SEISMOLOGICAL PROFILE ALONG THE KALI RIVER VALLEY, KUMAON HIMALAYA

2019 ◽  
Author(s):  
Somak Hajra ◽  
Devajit Hazarika ◽  
Meena Bankhwal ◽  
Naresh Kumar ◽  
Sanjit Kumar Pal ◽  
...  
Keyword(s):  
Poisson’S Ratio ◽  
Crustal Thickness ◽  
River Valley ◽  
Poisson's Ratio ◽  
Kumaon Himalaya ◽  
Kali River

Average crustal thickness and Poisson’s ratio beneath the Kali River Valley, Kumaon Himalaya

2019 ◽  
Vol 173 ◽  
pp. 176-188 ◽  
Author(s):  
Somak Hajra ◽  
Devajit Hazarika ◽  
Meena Bankhwal ◽  
Abhishek Kundu ◽  
Naresh Kumar
Keyword(s):  
Poisson’S Ratio ◽  
Crustal Thickness ◽  
River Valley ◽  
Poisson's Ratio ◽  
Kumaon Himalaya ◽  
Kali River

Study of Crustal Thickness and Poisson's Ratio in the Coastal Area of South China

2014 ◽  
Vol 57 (6) ◽  
pp. 860-871 ◽  
Author(s):  
HUANG Hai-Bo ◽  
GUO Xing-Wei ◽  
XIA Shao-Hong ◽  
QIU Xue-Lin
Keyword(s):  
South China ◽  
Coastal Area ◽  
Poisson’S Ratio ◽  
Crustal Thickness ◽  
Poisson's Ratio

Imaging the Moho and Main Himalayan Thrust beneath the Kumaon Himalaya: constraints from receiver function analysis

2020 ◽  
Vol 224 (2) ◽  
pp. 858-870
Author(s):  
Devajit Hazarika ◽  
Somak Hajra ◽  
Abhishek Kundu ◽  
Meena Bankhwal ◽  
Naresh Kumar ◽  
...  
Keyword(s):  
Poisson’S Ratio ◽  
Receiver Function ◽  
Function Analysis ◽  
Crustal Thickness ◽  
Receiver Functions ◽  
P Wave ◽  
Poisson's Ratio ◽  
Kumaon Himalaya ◽  
Receiver Function Analysis ◽  
Lower Crustal

SUMMARY We analyse P-wave receiver functions across the Kumaon Himalaya and adjoining area to constrain crustal thickness, intracrustal structures and seismic velocity characteristics to address the role of the underlying structure on seismogenesis and geodynamic evolution of the region. The three-component waveforms of teleseismic earthquakes recorded by a seismological network consisting of 18 broad-band seismological stations have been used for receiver function analysis. The common conversion point (CCP) depth migrated receiver function image and shear wave velocity models obtained through inversion show a variation of crustal thickness from ∼38 km in the Indo-Gangetic Plain to ∼42 km near the Vaikrita Thrust. A ramp (∼20°) structure on the Main Himalayan Thrust (MHT) is revealed beneath the Chiplakot Crystalline Belt (CCB) that facilitates the exhumation of the CCB. The geometry of the MHT observed from the receiver function image is consistent with the geometry revealed by a geological balanced cross-section. A cluster of seismicity at shallow to mid-crustal depths is detected near the MHT ramp. The spatial and depth distribution of seismicity pattern beneath the CCB and presence of steep dipping imbricate faults inferred from focal mechanism solutions suggest a Lesser Himalayan Duplex structure in the CCB above the MHT ramp. The study reveals a low-velocity zone (LVZ) with a high Poisson's ratio (σ ∼0.28–0.30) at lower crustal depth beneath the CCB. The high value of Poisson's ratio in the lower crust suggests the presence of fluid/partial melt. The shear heating in the ductile regime and/or decompression and cooling associated with the exhumation of the CCB plausibly created favorable conditions for partial melting in the lower crustal LVZ.

scholarly journals Study of crustal thickness and poisson’s ratio of the south of Erenhot area by teleseismic receiver function

2018 ◽  
Vol 31 (4) ◽  
pp. 215-223
Author(s):  
Lei Jiang ◽  
◽  
Yonghong Duan ◽  
Yanna Zhao ◽  
Yong Qiu ◽  
...  
Keyword(s):  
Poisson’S Ratio ◽  
Receiver Function ◽  
Crustal Thickness ◽  
Poisson's Ratio ◽  
The South ◽  
Teleseismic Receiver Function

scholarly journals Analysis of the crustal thickness and Poisson's ratio in eastern Tibet from teleseismic receiver functions

2011 ◽  
Vol 186 (3) ◽  
pp. 1380-1388 ◽  
Author(s):  
Haiyan Yang ◽  
Jiafu Hu ◽  
Guangquan Li ◽  
Hong Zhao ◽  
Limin Wen
Keyword(s):  
Poisson’S Ratio ◽  
Crustal Thickness ◽  
Receiver Functions ◽  
Poisson's Ratio ◽  
Eastern Tibet

Crustal thickness and Poisson’s ratio variations across the northwest Himalaya and eastern Ladakh

2013 ◽  
Vol 61 (4) ◽  
pp. 905-922 ◽  
Author(s):  
Devajit Hazarika ◽  
Naresh Kumar ◽  
Dilip Kumar Yadav
Keyword(s):  
Poisson’S Ratio ◽  
Crustal Thickness ◽  
Poisson's Ratio ◽  
Northwest Himalaya
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