广西区域现今地壳运动与应变的GPS监测分析

廖超明; 马艳; 潘元进; 黄祥雄

doi:10.11947/j.AGCS.2015.20130566

测绘学报 >

2015 , Vol. 44 >Issue 8: 858 - 865

DOI: https://doi.org/10.11947/j.AGCS.2015.20130566

大地测量学与导航

广西区域现今地壳运动与应变的GPS监测分析

廖超明 ,
马艳 ,
潘元进 ,
黄祥雄

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1. 广西壮族自治区测绘地理信息档案资料馆, 广西南宁 530023;
2. 中国测绘地理信息学会, 北京 100048;
3. 武汉大学测绘学院, 湖北武汉 430079;
4. 广西有色勘察设计研究院, 广西南宁 530023

廖超明(1975-),男,博士,教授级高级工程师,研究方向为GNSS精密数据处理及应用。E-mail:gps94041@163.com

收稿日期: 2014-01-02

修回日期: 2015-05-07

网络出版日期: 2015-09-02

基金资助

广西空间信息与测绘重点实验室开放基金(13-051-14-20);广西培养新世纪学术和技术带头人专项资金;国家测绘地理信息局青年学术与技术带头人科研计划(201352)

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Present-day Crustal Movement and Strain Rate in Guangxi Area from GPS Data

LIAO Chaoming ,
MA Yan ,
PAN Yuanjin ,
HUANG Xiangxiong

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1. Surveying, Mapping and Geoinformation Archives of Guangxi Zhuang Autonomous Region, Nanning 530023, China;
2. Chinese Society for Surveying, Mapping and Geoinformation, Beijing 100048, China;
3. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
4. Guangxi Nonferrous Survey & Design Institute, Nanning 530023, China

Received date: 2014-01-02

Revised date: 2015-05-07

Online published: 2015-09-02

Supported by

Open Foundation of Guangxi Key Laboratory of Spatial Information and Geomatics(No.13-051-14-20);Special Fund by Guangxi Cultivate Academic and Technical Leaders in New Century;National Administration of Surveying, Mapping and Geoinformation Youth Academic and Technical Leaders Scientific Assignment Project(No.201352)

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摘要

利用GAMIT/GLOBK软件分析了1998-2010年间多期GPS观测数据,获得了ITRF2005框架下广西区域现今地壳运动三维速度场和应变场参数,并对区域形变场和现今构造运动动力学机制进行了初步讨论。GPS监测结果显示:广西区域现今地壳运动随华南块体作南东东方向的逆时针构造运动,ITRF2005框架下水平方向平均速率为33.49 mm/a,优势方向为N 109.3° E;垂直方向平均速率为+1.30 mm/a,整体趋势是自桂东向桂西方向垂向速率逐步增加。现今应变状态以N 127.3°±4.8° E挤压为主,最大主压应变率-2.7±0.5×10^-9/a;兼有N 37.3°±4.8° E方向的拉张作用,最大主张应变率1.8±0.2×10^-9/a。本文研究结果为描述广西区域现今地壳运动提供了一个更加精细的三维速度场。

关键词： GPS; 地壳运动; 速度场; 应变参数

本文引用格式

廖超明 , 马艳 , 潘元进 , 黄祥雄 . 广西区域现今地壳运动与应变的GPS监测分析[J]. 测绘学报, 2015 , 44(8) : 858 -865 . DOI: 10.11947/j.AGCS.2015.20130566

Abstract

The 3D crustal movement velocities filed and strain parameters of Guangxi area are acquired in the coordinate frame of ITRF2005 with the multi-period GPS data from 1998 to 2010 analyzed by using GAMIT/GLOBK software, and the area deformation field and present-day construction mechanism are also discussed in this paper. From the GPS monitoring results, the crustal movement of Guangxi area coincides with south China movement in the South-East-East anticlockwise direction, the average vertical velocity value is 33.49 mm/a in ITRF2005 frame, the preponderant direction is N 109.3° E, the average horizon velocity value is +1.30 mm/a, and the trend becomes increasing from East to West of Guangxi province. The present-day strain status is extrusion in N 127.3°±4.8° E direction, the main maximum extrusion strain is -2.7±0.5×10^-9/a with a tension effect in the N 37.3°±4.8° E direction, and the main maximum tension strain is 1.8±0.2×10^-9/a. A more precise 3D present-day crustal velocity filed of Guangxi area is presented in this paper with the full analyzing of GPS data.

Key words： GPS; crustal movement; velocity filed; strain parameters

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