[1]LI Tingting,LIU Li,FAN Wenhua,et al.Crustal Thickness and Ratio of Poisson in Jiangsu Area by Teleseismic Receiver Function[J].Journal of Seismological Research,2020,43(04):680-688.
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Crustal Thickness and Ratio of Poisson in Jiangsu Area by Teleseismic Receiver Function
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 04
Page number:
680-688
Column:
Public date:
2020-09-17
- Title:
- Crustal Thickness and Ratio of Poisson in Jiangsu Area by Teleseismic Receiver Function
- Keywords:
- receiver function; H-K stacking; crustal thickness; poisson's ratio
- CLC:
- P315.2
- DOI:
- -
- Abstract:
- In this paper,we calculate P-wave receiver functions by time domain deconvolution method under the 32 stations in Jiangsu Province from three'component digital waveform data of teleseismic earthquake events and obtain the thickness and average poisson's ratio in the crust of this area by H-K stacking.The results show that:①The crustal thickness in Jiangsu area has a thickening trend from east to west and obvious spatial distribution characteristics,which has a good correspondence with the geological tectonic setting,The first one is the crustal thickness in the Sulu orogenic belt area is higher than that in the surrounding area; the second one is the crustal thickness in the North China plate is relatively flat,mainly between 32 km and 33 km; and the last one is the crustal thickness in the Lower Yangtze plate area varies greatly between 27 km and 34 km and the average crust thickness in the central and eastern continental margins of this area is about 28 km.②The poisson's ratio in the study area is between 0.22 and 0.28.Because of the high-pressure and ultra-high-pressure metamorphic rocks,the poisson's ratio located below the Sulu orogenic belt and the surrounding area is higher.The poisson's ratio changes significantly and shows a high and low phase distribution in the Maodong fault and its surrounding area which is located in the lower Yangtze block,and the higher poisson's ratio area and the changing poisson's ratio area have a certain relationship with the seismic activity.
- References:
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Last Update:
2020-09-17