广东井水位和水温对汶川8.0级地震的同震响应研究
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摘要
系统收集广东地区地下流体观测网水位和水温资料,归纳汶川8.0级地震引起的同震响应,研究其响应特征、响应时间过程、响应空间分布等。结果表明:不同区域的水位测点出现同震响应的比例存在差异;水位同震阶跃变化以下降为主,其阶升、阶降的测井在空间分布上存在分区性;响应灵敏性方面,水位明显高于水温;震级越大、距离测点越近的强震,水位出现同震阶跃响应的比例越高;水位同震阶跃响应的方向能在一定程度上反映测点区域所受的构造应力状态,汶川8.0级地震对广东地区的影响以张应力为主。
The water level and water temperature data of underground liquid observation net in GuangDong areas are collected in the paper.The simultaneity earthquake response evoked by Ms8.0 earthquake in WenChuan is concluded.The response characteristic,the response process,and the space distributing of the response are also researched in the paper.The result indicate that the measure item proportion of the water level change in simultaneity earthquake shows definite space distributing characteristic.The steps change of the water level in simultaneity earthquake mainly shows decreased trend.The sub -area characteristic is existed in space distributing of the measure well which appears ascend or descend in step.The water level is higher than water temperature in evidence in response sensitivity.The appearance proportion of simultaneity earthquake step response in water level will be higher when the earthquake level is bigger and the measure point is nearer to the strong earthquake.The simultaneity earthquake step response in water level can reflect the construction stress in a certain extent in measure point aeras.The influence of earthquake in WenChuan in GuangDong areas is mainly tensile stress.
The water level and water temperature data of underground liquid observation net in GuangDong areas are collected in the paper.The simultaneity earthquake response evoked by Ms8.0 earthquake in WenChuan is concluded.The response characteristic,the response process,and the space distributing of the response are also researched in the paper.The result indicate that the measure item proportion of the water level change in simultaneity earthquake shows definite space distributing characteristic.The steps change of the water level in simultaneity earthquake mainly shows decreased trend.The sub -area characteristic is existed in space distributing of the measure well which appears ascend or descend in step.The water level is higher than water temperature in evidence in response sensitivity.The appearance proportion of simultaneity earthquake step response in water level will be higher when the earthquake level is bigger and the measure point is nearer to the strong earthquake.The simultaneity earthquake step response in water level can reflect the construction stress in a certain extent in measure point aeras.The influence of earthquake in WenChuan in GuangDong areas is mainly tensile stress.
引文
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[9]张培震.中国地震灾害与防震减灾[J].地震地质,2008,30(4):577-583.
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[11]鱼金子,车用太,刘五洲.井水温度微动态形成的水动力学机制研究[J].地震,1997,17(4):389-396.
[2]杨选辉.印尼8.7级地震后中国大陆出现的同震、震后宏观现象[C].2005年地震预报专业委员会议论文集.2005.
[3]万永芳,李健梅.印尼苏门答腊海域强震与广东地下水位响应特征研究[J].灾害学,2009,24(2):69-74.
[4]Burchfiel B C,Chen Z,Liu Y,et a1.Tectonics of Longmen Shan and adjacent regions,Central China[J].Int Geol Rev,1995,37:661-736.
[5]Burchfiel B C.New technology:New geological challenges[J].Geol Soc Amer Today,2003,14(2):4-10.
[6]Burchfiel B C,Royden L H,vander Hilst R D,et a1.Ageological and geophysical context for the Wenchuan earthquake of12May2008,Sichuan,People's Republic of China[J].GSA Today,2008,18(7):4-11.
[7]Beaumont C,Jamieson R A,Nguyen M H,et a1.Himalayan tectonics explained by extrusion of a low-viscosity crustal channel coupled to focused surface denunation[J].Nature,2001,414:738-742.
[8]陆明勇,房宗绯,赵丽葵.汶川8.0级地震前地下流体长趋势变化特征讨论[J].地震,2010,30(1):61-72.
[9]张培震.中国地震灾害与防震减灾[J].地震地质,2008,30(4):577-583.
[10]杨竹转,邓志辉,刘春国,等.中国大陆井水位与水温动态对汶川MS8.0地震的同震响应特征分析[J].地震地质,2008,30(4):895-905.
[11]鱼金子,车用太,刘五洲.井水温度微动态形成的水动力学机制研究[J].地震,1997,17(4):389-396.
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