城市地震活断层探测的地球物理方法
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摘要
通过国内外有关城市地震活断层探测的实例 ,对城市地震活断层探测的主要地球物理方法进行了介绍。由于城市地区特殊的干扰环境 ,城市地震活断层探测需要对传统的技术方法进行必要的改进和调整 ,以提高探测方法的抗干扰能力。城市地震活断层探测应充分利用高分辨浅层地震勘探和人工地震测深精度高的优势 ,根据不同城市的地球物理特征 ,配合电法勘探、磁法勘探、重力勘探和天然地震观测等其他地球物理方法 ,通过对资料的综合分析和解释 ,提高探测结果的分辨率和可靠性。
This paper introduces the main geophysical methods of seismically active fault detection in city areas,through some examples about seismically active fault detections in some cities at home and abroad. Because of specific interference environment of city areas,it is necessary to improve and readjust traditional technical methods in seismically active fault detections of city areas,so as to increase the anti interference ability of the detection methods.The seismically active fault detections in cities should make full use of high resolution shallow seismic prospecting and sounding of artificial earthquakes,which has the advantage of high precision,according to the geophysical features of various cities,coordinating with other geophysical methods,such as electrical prospecting,magnetic prospecting,gravity survey and natural earthquake observation,through a comprehensive analysis and interpretation to increase the resolution and reliability of detection results.
This paper introduces the main geophysical methods of seismically active fault detection in city areas,through some examples about seismically active fault detections in some cities at home and abroad. Because of specific interference environment of city areas,it is necessary to improve and readjust traditional technical methods in seismically active fault detections of city areas,so as to increase the anti interference ability of the detection methods.The seismically active fault detections in cities should make full use of high resolution shallow seismic prospecting and sounding of artificial earthquakes,which has the advantage of high precision,according to the geophysical features of various cities,coordinating with other geophysical methods,such as electrical prospecting,magnetic prospecting,gravity survey and natural earthquake observation,through a comprehensive analysis and interpretation to increase the resolution and reliability of detection results.
引文
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14 金安蜀 ,刘福田 ,孙永智 .北京地区地壳和上地幔的三维 P波速度结构 .地球物理学报 ,1980 ,2 3(2 ) :172～ 182
15 刘福田 ,曲克信 ,吴华 ,等 .华北地区的地震层析成像 .地球物理学报 ,1986 ,2 9:4 2 4～ 4 4 9
16 丁志峰 ,何正勤 ,孙为国 ,等 .青藏高原东部及其边缘地区的地壳上地幔三维速度结构 .地球物理学报 ,1999,4 2 (2 ) :197～ 2 0 5
17 Graves R W.Simulating seismic wave propagation in3D elastic media using staggered- grid finite differences.Bull Seism Soc Am. 1996 ,86 :10 91～ 110 6
18 Hartzell S,et al.Three dimensional structure influence on the strong- motion wavefield of1989Loma Prietaearthquake.Bull Seism Soc Am,1999,89:1184～ 12 0 2
19 Frankel A,et al.Three- dimensional simulation of ground motion in the Seattle region for earthquakes in theSeattle fault zone.Bull Seism Soc Am,2 0 0 0 ,90 :12 51～ 12 6 7
2 L iberty L M,et al. Integration of high- resolution seismic and aeromagnetic data for earthquake hazardsevaluations:an example from the Willamette Valley,Oregon. Bull Seism Soc Am,1999,89:1473～ 1483
3 Stephenson W J,et al. Deformation and quaternary faulting in southeast Missouri across the commercegeophysical lineament. Bull Seism Soc Am,1999,89:140～ 155
4 王椿镛 ,张先康 ,吴庆举 ,等 .华北盆地滑脱构造的地震学证据 .地球物理学报 ,1994 ,37:6 13～ 6 2 05 张先康 ,王椿镛 ,刘国栋 ,等 .延庆 -怀来地区地壳细结构 :利用深地震反射剖面 .地球物理学报 ,1996 ,39:350～ 356
6 Unsworth M,et al. High- resolution electromagnetic imaging of the San Andreas fault in central California. JGeophys Res,1999,10 4 :1131～ 1150
7 吴建平 ,冯锐 .井间电磁波 CT中的非快体分段反演算法 . CT理论应用与研究 ,1993,2 (3) :1～ 8
8 Abbott R E,et al. Depth to bedrock using gravimetry in the Reno and Carson city,Nevada,area basins.Geophysics,2 0 0 0 ,6 5(2 ) :340～ 350
9 Blakely R J,etal. Gravity anomalies,quaternary vents,and quaternary faults in the southern Cascade Range,Oregon and California:implications for arc and backarc evolution. JGeophys Res,1997,10 2 :2 2 513～ 2 2 52 7
10 Hole JA,et al. Three- dimensional seismic velocity structure of the San Francisco Bay area. JGeophys Res,2 0 0 0 ,10 5:13859～ 13874
11 刘启元 ,李顺成 ,沈杨 ,等 .延怀盆地及其邻区地壳上地幔速度结构的宽频带地震台阵研究 .地球物理学报 ,1997,4 0 (6 ) :76 3～ 771
12 吴庆举 ,曾融生 .用宽频带远震接收函数研究青藏高原的地壳结构 .地球物理学报 ,1998,4 1(5) :6 6 9～ 6 79
13 吴建平 ,明月红 ,王椿镛 .云南数字地震台站下方的 S波速度结构研究 .地球物理学报 ,2 0 0 1,4 4 (2 ) :2 2 8～ 2 37
14 金安蜀 ,刘福田 ,孙永智 .北京地区地壳和上地幔的三维 P波速度结构 .地球物理学报 ,1980 ,2 3(2 ) :172～ 182
15 刘福田 ,曲克信 ,吴华 ,等 .华北地区的地震层析成像 .地球物理学报 ,1986 ,2 9:4 2 4～ 4 4 9
16 丁志峰 ,何正勤 ,孙为国 ,等 .青藏高原东部及其边缘地区的地壳上地幔三维速度结构 .地球物理学报 ,1999,4 2 (2 ) :197～ 2 0 5
17 Graves R W.Simulating seismic wave propagation in3D elastic media using staggered- grid finite differences.Bull Seism Soc Am. 1996 ,86 :10 91～ 110 6
18 Hartzell S,et al.Three dimensional structure influence on the strong- motion wavefield of1989Loma Prietaearthquake.Bull Seism Soc Am,1999,89:1184～ 12 0 2
19 Frankel A,et al.Three- dimensional simulation of ground motion in the Seattle region for earthquakes in theSeattle fault zone.Bull Seism Soc Am,2 0 0 0 ,90 :12 51～ 12 6 7
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