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COUPLING MECHANISM OF VOLUME STRAIN AND WATER LEVEL IN THE FUXIN WELL LOCATED IN A GEOTHERMAL AREA BEFORE AND AFTER THE 2011 M-W 9.1 TOHOKU EARTHQUAKE

文献类型：期刊论文

作者Zhang, Yan1; Fu, Li-Yun1; Zhao, Lian-feng1; Chen, Xuezhong2
刊名ACTA GEODYNAMICA ET GEOMATERIALIA
出版日期2017
卷号14期号:1页码:61-71
ISSN号1214-9705
关键词Coupling Mechanism Tele-seismic Waves Volume Strain Water Level 2011 M-w 9.1 Tohoku Earthquake
DOI10.13168/AGG.2016.0028
文献子类Article
英文摘要According to previously reported observations, low-frequency (similar to 0.01-500 Hz) seismic waves can enhance permeability and alter the distribution of pore pressure, which in turn, enhance geothermal energy/oil production. To quantify the effects of low-frequency, dynamic stress stimulation on fluid flow and in-situ pore pressure variations in porous media, observations were conducted in the Fuxin well (located in a geothermal area in north-eastern China), before and after the far-field M-w 9.1 Tohoku huge earthquake. In doing so, precise measurements of earthquake-induced stress, strain, aquifer characteristics and fluid flow parameters could be obtained. We apply tidal analysis to the volumetric strain and water level data of the well. We demonstrate that the tele-seismic waves with a central frequency of 0.02 Hz hardly had an impact on the undrained poroelastic parameters of the aquifer, indicating that the tele-seismic waves cannot induce the disruption of the aquifer medium directly, although it can easily enhance permeability and induce the transfer of pore pressure in the aquifer. Together with the phases, the signs of the co-seismic amplitude change as well as the co-seismic and post-seismic patterns of volumetric strain and water level, we obtain the coupling mechanism of the volume strain change and the water level change: Before the earthquake, tidal volumetric strain induced the change of water level (the phase of the water level lagged behind that of the volume strain). In comparison, during the earthquake, the permeability enhanced by tele-seismic waves, water level (pore pressure) transferred from high pressure region to the Fuxin well, and induced the dilatation of volume strain (phase shifts increased sharply, indicating the change of water level caught up with that of volume strain). Finally, during the short time span after the earthquake, the water level and volumetric strain interacted with each other and changed consistently (phase shifts approach 0 degrees).
WOS关键词DISTANT EARTHQUAKES ; TELESEISMIC WAVES ; AQUIFER ; CHINA ; RESPONSES ; WENCHUAN
WOS研究方向Geochemistry & Geophysics ; Mining & Mineral Processing
语种英语
出版者ACAD SCI CZECH REPUBLIC INST ROCK STRUCTURE & MECHANICS
WOS记录号WOS:000395939700005
资助机构Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2015M570142 ; 2016T90129) ; Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2015M570142 ; 2016T90129) ; Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2015M570142 ; 2016T90129) ; Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2015M570142 ; 2016T90129)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53067]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Zhang, Yan; Fu, Li-Yun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.China Earthquake Adm, Inst Geophys, 5 Minzu Daxue Nan Rd, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yan,Fu, Li-Yun,Zhao, Lian-feng,et al. COUPLING MECHANISM OF VOLUME STRAIN AND WATER LEVEL IN THE FUXIN WELL LOCATED IN A GEOTHERMAL AREA BEFORE AND AFTER THE 2011 M-W 9.1 TOHOKU EARTHQUAKE[J]. ACTA GEODYNAMICA ET GEOMATERIALIA,2017,14(1):61-71.
APA Zhang, Yan,Fu, Li-Yun,Zhao, Lian-feng,&Chen, Xuezhong.(2017).COUPLING MECHANISM OF VOLUME STRAIN AND WATER LEVEL IN THE FUXIN WELL LOCATED IN A GEOTHERMAL AREA BEFORE AND AFTER THE 2011 M-W 9.1 TOHOKU EARTHQUAKE.ACTA GEODYNAMICA ET GEOMATERIALIA,14(1),61-71.
MLA Zhang, Yan,et al."COUPLING MECHANISM OF VOLUME STRAIN AND WATER LEVEL IN THE FUXIN WELL LOCATED IN A GEOTHERMAL AREA BEFORE AND AFTER THE 2011 M-W 9.1 TOHOKU EARTHQUAKE".ACTA GEODYNAMICA ET GEOMATERIALIA 14.1(2017):61-71.

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来源：地质与地球物理研究所

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