GRACE和GOCE卫星监测的青藏高原重力场特征
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摘要
文章阐述了对青藏高原重力场进行研究的意义,并进一步利用重力卫星GRACE和GOCE的数据对该区域的重力场特征进行了描述。通过对该区域的重力异常、径向引力梯度的计算和分析,可以得出:在青藏高原的西部,有明显的3条重力异常区,这与当地的地形有关,也与断层的位置有关;引力梯度比重力异常具有更高的空间分辨率;重力变化剧烈的区域与梯度的异常区有一定的对应关系,同时也是地球动力活动变化剧烈的区域。
Significance of gravity field research in Tibet Plateau was introduced and then characteristics of gravity field detected by GRACE and GOCE in this area were showed.By the computation and analysis of gravity anomaly and gravity gradients,it was concluded that:there are three gravity anomaly areas in Tibet Plateau,which is not only related with the topography,also with the location of faults;spatial resolution of gravity gradients is higher than that of gravity anomaly;in the place that gravity changes largely,gravity gradients are often abnormal and phenomena of geodynamics,such as earthquake,often occur.
Significance of gravity field research in Tibet Plateau was introduced and then characteristics of gravity field detected by GRACE and GOCE in this area were showed.By the computation and analysis of gravity anomaly and gravity gradients,it was concluded that:there are three gravity anomaly areas in Tibet Plateau,which is not only related with the topography,also with the location of faults;spatial resolution of gravity gradients is higher than that of gravity anomaly;in the place that gravity changes largely,gravity gradients are often abnormal and phenomena of geodynamics,such as earthquake,often occur.
引文
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[2]周玖,黄修武,王学昌,等.青藏高原重力构造[J].地质科学,1983,04:345-354.
[3]殷秀华,黎益壮,冯华.青藏高原重力场特征和地壳构造[J].物探与化探,1998,22(06):440-450.
[4]张省举,董义国.青藏高原中东部1:100万区域重力调查及成果[J].物探与化探,2007,31(05):399-402.
[5]张健,周国藩,徐忠祥.塔里木盆地卫星重力异常与油气资源的相关性研究[J].1997,22(06):643-647.
[6]王谦身,滕吉文,王光杰,等.应用卫星重力信息对横断山系地区布格重力异常特异分布的纠正[J].地球物理学进展,2007,22(02):345-352.
[7]井向辉,程顺有,许小强,等.中国西部卫星重力异常特征新疆石油地质[J].新疆石油地质,2009,30(01):61-64.
[8]Hofmann W B,Moritz H.Physical Geodesy[M].Wien:Springer Wien New York,2005.
[9]Balmino G,Rummel R,Visser P,et al.Gravity Field and Steady-State Ocean Circulation Mission[R].The Four Candidate Earth Explorer Core Missions,ESA Publications Division,1999.
[10]Mayer-Guerr T,Kurtenbach E,Eicker A.ITGGrace2010[EB/OL].(2010-6-20).http://www.igg.uni-bonn.de/apmg/index.php?id=itg-grace2010.
[11]Pail R,Bruinsma S,Migliaccio F,et al.First GOCE Gravity Field Models Derived by Three Different Approaches[J].Jounal of Geodesy,2011,85(11):819-843.
[12]徐德诗,毛桐恩.对中国西部大开发战略中防震减灾工作的思考[J].国际地震动态,2000,04:01-09.
[13]张赤军,刘根友,方剑.断层活动的重力效应[J].地壳形变与地震.1994,14(03):01-08.
[14]徐海军,张永志,段虎荣,夏朝龙.GOCE卫星监测的中国区域重力异常[J].地球物理学进展,2012,27(02):404-407.
[15]曹学伟,党亚民,章传银.利用重力资料研究华北地区构造应力场[J].测绘科学,2010,35(03):40-42.