青藏高原班公-怒江缝合带现今运动状况的GPS观测研究

J4 ›› 2010, Vol. 40 ›› Issue (6): 1496-1502.

青藏高原班公-怒江缝合带现今运动状况的GPS观测研究

肖根如^1,2|甘卫军¹|陈为涛¹|程佳³

1.中国地震局地质研究所/地震动力学国家重点实验室|北京 100029;
2.东华理工大学测量系|江西抚州 344000;
3.中国地震台网中心|北京 100045

收稿日期:2010-04-08 出版日期:2010-11-26 发布日期:2010-11-26
作者简介:肖根如（1978-）|男|江西新干人|博士研究生|讲师|主要从事GPS数据处理及地壳形变分析解释|E-mail:xgr541@21cn.com
基金资助:
国家“973”计划项目（2008CB425703）；国家自然科学基金项目（40674055）

Present-Day Movement of Bangong Co-Nujiang Suture Zone,Tibetan Plateau, Inferred from GPS Measurements

XIAO Gen-ru^1,2, GAN Wei-jun¹| CHEN Wei-tao¹| CHENG Jia³

1. Institute of Geology/State Key Laboratory of Earthquake Dynamics, China Earthquake Administration, Beijing 100029, China ;
2. School of Surveying and Mapping, East China Institute of Technology, Fuzhou, Jiangxi 344000, China;
3. China Earthquake Network Center, Beijing 100045, China

Received:2010-04-08 Online:2010-11-26 Published:2010-11-26

摘要/Abstract

摘要：

利用青藏高原改则地区一条跨越班公-怒江缝合带的10站GPS剖面在2007-2009年的3期流动观测资料，采用自洽的统一参考框架方法分析研究了改则地区的现今地壳差异运动，得出该区域现今地壳应变率以南北向挤压为主，量值达(104.0±28.6)×10^-9/a，同时兼有东西向拉张，量值约为(25.4±17.7)×10^-9/a。利用半无限弹性空间的断裂位错模型和GPS速度矢量的约束，反演获得班公－怒江缝合带在该地区（即改则-洞错断裂）的现今运动以右旋走滑为主，走滑速率约为(7.4±0.8) mm/a。

关键词: 班公-怒江缝合带, GPS, 地壳变形, 运动速率

Abstract:

Based on the measurements of a GPS profile, which is composed of 10 GPS stations across the Bangong Co-Nujiang suture zone around Gaize area of the Tibetan Plateau, observed 3 times from 2007 to 2009 in campaign mode, we investigated the present-day crustal deformation of the Gaize area, and revealed that the principal strains of the region are north-south compression and east-west extension with the rates of (104.0±28.6) ×10^-9/a and (25.4±17.7) ×10^-9/a, respectively. Using the half-space elastic dislocation model and constrained with the GPS velocity vectors of the GPS profile, we inversed the present-day movement of the Bangong Co-Nujiang suture zone at Gaize area (known as Gaize-Dongcuo fault) is right-lateral with a rate of about (7.4±0.8) mm/a.

Key words: Bangong Co-Nujiang suture zone, GPS, crustal deformation, movement rate

中图分类号:

TP79

肖根如, 甘卫军, 陈为涛, 程佳. 青藏高原班公-怒江缝合带现今运动状况的GPS观测研究[J]. J4, 2010, 40(6): 1496-1502.

XIAO Gen-ru, GAN Wei-jun, CHEN Wei-tao, CHENG Jia. Present-Day Movement of Bangong Co-Nujiang Suture Zone,Tibetan Plateau, Inferred from GPS Measurements[J]. J4, 2010, 40(6): 1496-1502.

参考文献

相关文章 5

[1]	王明常, 李彦妮, 刘财, 马国庆, 牛雪峰, 王民水. 斜轴高斯投影在跨带物探长剖面测量中的应用[J]. 吉林大学学报(地球科学版), 2017, 47(5): 1582-1588.
[2]	白相东, 迟宝明, 关成尧, 张艳, 袁四化, 梁文天. 鄂尔多斯南缘构造带现今地块运动模式[J]. 吉林大学学报(地球科学版), 2015, 45(3): 674-682.
[3]	汤洁，吕川，李昭阳，王晨野，张景成,李海毅. 基于灰色聚类与3S耦合方法的生态环境质量变化趋势研究--以吉林省大安市为例[J]. J4, 2008, 38(6): 1037-1043.
[4]	于小平，张廷玉，刘财，陈增宝,许惠平，庞贺民. 应用GPS数据与重力数据确定大地水准面[J]. J4, 2008, 38(5): 904-0907.
[5]	于小平，杨国东，许惠平，肖锋，赵震宇，刘财，孟令顺. 带状区域GPS大地高转换成正常高的研究[J]. J4, 2007, 37(1): 185-0189.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed