跨断层形变测量场地图形分析及设计
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摘要
在分析了青藏块体北缘跨断层形变测量场地图形现状的基础上，论述了进行优化设计的必要性及新的图形设计的主要内容：①以ＧＰＳ控制整个断裂，以水准、测距、基线、重力等测量手段监测各个场地测点形成的三维地形变和重力变化信息；②断层水准、重力按新的标石列线阵布设；③断层水平形变可根据断层运动状态的不同，按“走滑型”和“倾滑型”布设；④场地水准、重力定期与区域水准、重力联测，场地水平测距网定期与区域ＧＰＳ网联测，以了解区域应力场与断层活动变化的关系。
This paper analysised the present situalian on across fault crustal deformation measurement field figure along north edge of Qinghai Xizang subplate.Anthors have discussed the necessity of optimal design and important content of new figure design.(1)GPS controlled whole faults,and monitoring 3 dimension crustal deformation and gravity change information on a field surveying point are carried on by level,ranger,baseline,gavity etc.measurement means.(2)across fault level,gravity is designed on new bonchmark array across the fault.(3)across fault horizontal survey is designed a″ strike slip type″ and a ″dip slip type″ according to the fault movement character.(4)across fault level,gravity are tie measured as area level,gravity,across fault horizontal measurement net are tie measured as area GPS net at regular intervals,which is worked out the affection of area stress field on fault movement change.
This paper analysised the present situalian on across fault crustal deformation measurement field figure along north edge of Qinghai Xizang subplate.Anthors have discussed the necessity of optimal design and important content of new figure design.(1)GPS controlled whole faults,and monitoring 3 dimension crustal deformation and gravity change information on a field surveying point are carried on by level,ranger,baseline,gavity etc.measurement means.(2)across fault level,gravity is designed on new bonchmark array across the fault.(3)across fault horizontal survey is designed a″ strike slip type″ and a ″dip slip type″ according to the fault movement character.(4)across fault level,gravity are tie measured as area level,gravity,across fault horizontal measurement net are tie measured as area GPS net at regular intervals,which is worked out the affection of area stress field on fault movement change.
引文
车兆宏．1995．流动形变及重磁综合监测断层的研究．地壳形变与地震，14（4）：90～97巩守文．1991．北祁连甘青交界地区的地壳形变整体监测系统．地壳形变与地震，11（2）：95～101蒋成恩．1988．现今断层活动与强地震．地壳形变与地震，8（2）：226～235刘鼎文．1991．形变监测网的设计与优化．地壳形变与地震，11（1）：41～50卢良玉．1995．断层形变近场信息开发利用．地壳形变与地震，15（2）：59～65于品清．1988．断层形变与地质构造．地壳形变与地震，8（2）：236～249周硕愚．1994．断层形变测量与地震预报．地壳形变与地震，14（4）：90～97周雄．1996．监测网设计的逆特征值法．地壳形变与地震，16（1）：59～63赵振才．1996．青藏块体北缘跨断层测量资料宏观分析．中国地震，12（4）：358～366
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