许才军
主要从事大地测量地球物理联合反演,地壳变形及其动力学方面的研究工作
个性化签名
- 姓名:许才军
- 目前身份:
- 担任导师情况:
- 学位:
-
学术头衔:
博士生导师
- 职称:-
-
学科领域:
大地测量技术
- 研究兴趣:主要从事大地测量地球物理联合反演,地壳变形及其动力学方面的研究工作
暂无
-
主页访问
3665
-
关注数
0
-
成果阅读
453
-
成果数
10
许才军, 李志才
武汉大学学报·信息科学报,2002,27(4):348~351,-0001,():
-1年11月30日
基于刚性块体和GPS稳定点组概念,用GPS稳定点组的水平速度值求出了各活动地块及华北亚板块的欧拉运动参数,推证了块体边界上的点相对运动速度矢量公式,通过该公式利用块体欧拉运动参数反演计算分析了地块边界带运动状况;通过块体欧拉运动参数反演计算各GPS观测点的背景运动速度,用观测点的实测运动速度减去各观测点的背景运动速度得出其实际变形值,进一步分析了各地块内部变形情况,并探讨了各活动地块的刚性特征。
活动地块, 边界带运动, 内部变形
-
65浏览
-
0点赞
-
0收藏
-
0分享
-
319下载
-
0评论
-
引用
许才军, 王华, 黄劲松
武汉大学学报·信息科学报,2003,28:58~78,-0001,():
-1年11月30日
分析了GPS与INSAR数据融合的必要性与可行性,讨论了GPS与INSAR数据融合存在的主要问题,进一步探讨了利用GPS数据改善INSAR相位解缠算法,利用GPS与INSAR数据融合建立水汽模型和大气层延迟误差改正模型,以及GPS高时间分辨率和高平面位置精度与INSAR高空间分辨率和高高程变形精度有效统一的问题。
GPS, INSAR, 误差改正, 数据融合
-
55浏览
-
0点赞
-
0收藏
-
0分享
-
524下载
-
0评论
-
引用
-
49浏览
-
0点赞
-
0收藏
-
0分享
-
250下载
-
0评论
-
引用
许才军, 李志才
武汉大学学报·信息科学版,2003,28(6):658~662,-0001,():
-1年11月30日
分析了反演中常用的贝叶斯逼近法、轮回搜索法两种算法的优缺点,提出轮回搜索2贝叶斯联合算法,该算法可以很好地反演出先验信息不明的参数。利用喜马拉雅区域GPS速度场,通过位错模型结合轮回搜索-贝叶斯方法,反演分析了印度板块与欧亚板块的碰撞情况。
轮回搜索-贝叶斯法, 位错模型, 反演, GPS, 印度与欧亚板块碰撞带
-
60浏览
-
0点赞
-
0收藏
-
0分享
-
190下载
-
0评论
-
引用
许才军, LIU Jingnan, XU Caijun, SONG Chenghua, SHI Chuang, JIANG Weiping, & DONG Lixiang
Chinese Science Bulletin Vol. 46 No.8 April 2001,-0001,():
-1年11月30日
of the Tibet block relative to Golmud in the north and south directions is (9.3±4.6)mm/a, the strain velocity of the middle part in the west and east directions is (15.6±6.3)mm/a, reflecting the plateau lateral extruding movement. The Himalayan block is mainly compressing strain, and the middle part of the Tibet block is mainly extending strain. The highest extending and the compressing strain are 0.131×10−6/a and −0.189×10−6/a, respectively.
GPS surveying,, Qinghai-Tibetan Plateau,, crustal movement,, strain analysis.,
-
38浏览
-
0点赞
-
0收藏
-
0分享
-
294下载
-
0评论
-
引用
许才军, 温扬茂
大地测量与地球动力学,2003,23(3):50~55,-0001,():
-1年11月30日
推导了块体运动和应变的各种模型,讨论了各种模型的适用条件。利用模拟数据反演计算了块体运动和应变参数。基于模型的无偏性、有效性等概念,对块体的刚性旋转运动模型、旋转应变模型进行了辨识,结果表明:同时考虑块体刚性旋转运动和应变的模型比单独考虑刚性旋转的模型更符合实际,模型的适用范围更广。结合中国地壳运动观测网络及华北地区网实际观测所得的GPS速度场,对华北地区块体运动和应变模型进行了辨识。
模型辨识 块体运动 应变 无偏性 有效性 华北地块
-
48浏览
-
0点赞
-
0收藏
-
0分享
-
87下载
-
0评论
-
引用
许才军
武汉大学学报·信息科学报 2001,26(6):555~561,-0001,():
-1年11月30日
综述了10多年来国内外大地测量反演问题研究的成果及最新进展,特别是大地测量联合反演模型、大地测量联合反演算法以及大地测量联合反演理论和方法在研究地壳运动、地球构造等中的应用成果,讨论了联合卫星测高、声纳测深及海洋激光雷达遥感信息反演海洋环境参量,联合INSAR、GPS和水准资料反演研究地壳运动和联合各种观测数据反演研究地球内部构造问题。随着科学技术的发展,大地测量联合反演理论和方法研究将在监测全球变化、防灾减灾、发展地球科学理论方面取得更大进展。
联合反演理论, 地壳运动, 地球介质参数, 海洋环境参量
-
26浏览
-
0点赞
-
0收藏
-
0分享
-
247下载
-
0评论
-
引用
【期刊论文】GPS measurements of present-day uplift in the Southern Tibet
许才军, Caijun Xu, Jingnan Liu, Chenghua Song, Weiping Jiang, Chuang Shi
Earth Planets Space, 52, 735-739, 2000,-0001,():
-1年11月30日
Wuhan Technical University Surveying and Mapping (WTUSM) carried out three GPS campaigns in the Tibetan Plateau since 1993. To improve the vertical component precision of GPS measurement, we estimated the remaining tropospheric refraction using the piecewise linear method after the SAASTAMOINEN model and corrected the tropospheric refraction by selecting one parameter for every two hours model to consider the variation of tropospheric refraction. Using the IGS combined ephemeris and corresponding EOP Series for 1995 and 1997 GPS campaigns, all baseline vectors were processed by GAMIT (Ver.9.71) software, and network adjustment was carried out in ITRF97 frame by PowerAdj software (Ver.3.3) which was developed by WTUSM considering the baseline vectors'full covariance matrix. The resulting vertical velocity field determined from GPS campaigns in 1995 and 1997 shows that the average uplift rate in ITRF 97 frame is about 7.8
-
36浏览
-
0点赞
-
0收藏
-
0分享
-
103下载
-
0评论
-
引用
许才军, XU Cai-Jun), DONG Li-Xiang), SHI Chuang), LI Yan-Xing), HU Xin-Kang)
CHINESE JOURNAL OF GEOPHYSICS Vol. 45, No.4, 2002, pp: 517-526,-0001,():
-1年11月30日
Global Positioning System (GPS) observations from three measurement campaigns from 1995 to 1999 are used in a study of the tectonic activity and earthquake hazards in North China. These GPS data were firstly processed together with about 13 Global IGS stations using the GAMIT software to get the baseline solutions, then crustal horizontal motion in ITRF97 frame and with respect to Eurasia were obtained based on these baseline solutions and their variance-covariance matrix using the GPS network adjustment software Power ADJ developed by Wuhan University. Using the GPS velocity field we estimate the annual accumulation of strain rate field and annual accumulation of density of strain energy field. These resulting fields show the following: (1) most stations move at a rate of (3-12mm/a)
GPS,, Crustal deformation,, Annual accumulation of strain energy density,, Earthquake,, North China.,
-
33浏览
-
0点赞
-
0收藏
-
0分享
-
97下载
-
0评论
-
引用
许才军, XU Caijun, LIU Jingnan, LI Zhicai, DONGLixiang
Geo-spatial Information Science Vol. 3, No.4, p. 54~60 December 2000,-0001,():
-1年11月30日
We have determined approximate average rates of deformation in the Qinghai-Tibet plateau and its margins from the GPS data for last 10 years and the moment tensors from earthquakes between 1900 and 1999. We also determined the strain rate (seismic strain rate) associated with the seismic deformation using 254 Mw≥5.0 earthquakes, and estimated the shortening and extension rates for every block in the area as well. We also estimated the strain rate (geodetic strain rate) by 80 GPS sites' velocity vectors and analyzed characteristic of kinematics by two kinds of strain rates and discussed earthquake potential in the area. As a result, the deformation rates from seismic moment tensors and from GPS velocities are basically agreed with each other. It is feasi-ble to analyze seismic risk by comparing geodetic strain rate with seismic strain rate based on the opinion that strain energy will be released through earthquake. It is concluded that there is no strong earthquake potential (>M7) in the Qinghai Tibet plateau and its margins, but there is earthquake potential (>M5) in middle Tibet in a few years.
deformation kinematics, earthquake strain rates, GPS, seismic moment tensor, Qinghai-Tibet plateau
-
43浏览
-
0点赞
-
0收藏
-
0分享
-
121下载
-
0评论
-
引用