Modulation of Seismic Activity by Seasonal Hydrological Load in Nepal
Abstract The study of the disturbance process of hydrologic load on crustal stress is helpful in clarifying the relationship between hydrologic load and seismic activity. Using the seasonal signal of GPS time series in Nepal, the seasonal three-dimensional displacement field and stress-strain field model in this region is constructed. The modulation effect of seasonal hydrological load on seismicity in this area is studied by combining rainfall and seismic catalogue. The results show that: 1) there is a strong spatiotemporal correlation between seasonal surface displacement and rainfall; 2) the rainfall in monsoon period disturbs the long-term movement trend of the fault and releases the Coulomb stress to a certain extent, thus inhibiting the seismic activity and affecting the time of the earthquake.
Key words :
GPS time series
hydrological load
seasonal displacement
stress and strain
seismic activity
Cite this article:
WANG Chenxu,XIONG Yongliang,ZHANG Lupeng et al. Modulation of Seismic Activity by Seasonal Hydrological Load in Nepal[J]. jgg, 2020, 40(6): 596-600.
WANG Chenxu,XIONG Yongliang,ZHANG Lupeng et al. Modulation of Seismic Activity by Seasonal Hydrological Load in Nepal[J]. jgg, 2020, 40(6): 596-600.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2020/V40/I6/596
[1]
WANG Ruidong,ZHANG Lupeng,SHI Mingxing,HUANG Dingfa. Effect of Seasonal Hydrological Load on Crustal Deformation and Stress-Strain of Active Faults in Sichuan [J]. jgg, 2021, 41(7): 747-753.
[2]
CHEN Shanpeng,YIN Ling,LIANG Shiming,HU Xiangyang,YU Xiaoyan. Application of Deep Learning to Predict GPS Time Series in Exploring Precursors of Menyuan MS 6.4 Earthquake [J]. jgg, 2020, 40(12): 1248-1253.
[3]
CHANG Ting,ZHANG Lifen,WANG Qiuliang,HE Chaofeng. Study on Seismic Activity and Static Coulomb Stress Variation in the Vicinity of Xiannüshan-Jiuwanxi Fault Zone [J]. jgg, 2020, 40(10): 1044-1048.
[4]
SONG Shangwu,WANG Qingliang,HAO Ming,ZHOU Lin,LIU Liwei. Research on the Present Crustal Vertical Movement in Jiangsu-Anhui Area [J]. jgg, 2019, 39(9): 900-905.
[5]
YANG Lei,LI Baohua,CHANG Tinggai. Seismicity Characteristics of Xiangjiaba Reservoir Region before and after the Impoundment [J]. jgg, 2019, 39(9): 919-923.
[6]
SU Li’na,GAN Weijun,SU Xiaoning. A New Method of Interpolation of GPS Coordinate Time Series Based on Model and Noise Spatial Correlation [J]. jgg, 2019, 39(6): 620-624.
[7]
LIU Fangbin,QU Junhao. Research on Static Coulomb Stress Changes and Seismicity in Lintan-Tanchang Fault and the Adjacent Area [J]. jgg, 2018, 38(9): 886-890.
[8]
KAN Baoxiang,ZHONG Yuyun,SHEN Yu,XU Menglin. Geochemical Characteristics of Radon and Hydrogen in Soil Gas of Shuangxi-Jiaoxiyang Fault in Wenzhou [J]. jgg, 2018, 38(8): 823-827.
[9]
DONG Peiyu,QIAO Xuejun,XIONG Wei,LIU Chang,SHI Yaolin. Stress Influence on the Surrounding Area Induced by the 2017 MS 7.0 Jiuzhaigou Earthquake [J]. jgg, 2018, 38(12): 1241-1245.
[10]
WANG Jian,ZHOU Xiaohui,ZHU Zhaohan,LIANG Linlin. Research on Elimination of Common Mode Error in Large-Scale GPS Networks [J]. jgg, 2018, 38(1): 78-82.
[11]
GONG Guodong,HUA Xianghong,HE Xiaoxing,SHU Ying,MA Mengran. Analysis of Regional Characteristics of Environment Load Effect in GPS Coordinate Time Series [J]. jgg, 2017, 37(9): 961-967.
[12]
LIU Fangbin,QU Junhao,TIAN Zhaoyang,LIU Chengyu. Seismic Risk Assessment and Seismicity of Liaocheng-Lankao Fault Zone, Southwestern Shandong Province [J]. jgg, 2017, 37(8): 802-807.
[13]
MING Feng,YANG Yuanxi,ZENG Anmin. Analysis and Comparison of Common Mode Error Extraction Using Principal Component Analysis and Independent Component Analysis
[J]. jgg, 2017, 37(4): 385-389.
[14]
ZHANG Shuangcheng,HE Yuefan,LI Zhenyu,HOU Xiaowei,QU Wei,NAN Yang. EMD for Noise Reduction of GPS Time Series [J]. jgg, 2017, 37(12): 1248-1252.
[15]
Yang Bo;Zhang Fengshuang;and Han Yueping. EULERWAVELET METHOD AND ITS APPLICATION IN IDENTIFICATION OF COMMONMODE ERROR FROM TIME SEQUENCES OF HORIZONTAL COMPONENTS OF GPS CONTINUOUS STATIONS [J]. , 2010, 30(第3期): 100-104.