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201.
202.
GUO Junyi Associate Professor Laboratory for Modern Geodynamics WTUSM Wuhan China 《地球空间信息科学学报》1998,(1)
In this paper,a variational method is presented for solving theclassical gravimetric,satellite gravimetric and satellite altimetric mixed typeboudary value problem to obtain the potential coefficients.According to thisprinciple,classical gravimetric data(height measured by geometric levelling orheight triangulation),satellite gravimetric data(height measured by satellitegeodesy technique)and satellite altimetric data can be used jointly to calculate thepotential coefficients. 相似文献
203.
204.
Wang Chunzhen Huang Hanming and Wang BiquanInstitute of Geophysics CSB Beijing China 《中国地震研究》1998,(3)
We propose the pseudo-periodicity method and its quantitative prediction indexes for the occurrence time of earlier strong aftershock. We conducted tests of regressive prediction, and the R-value of the tests is 0.45, indicating that this method is effective for prediction. 相似文献
205.
Li Zhonghua Su Youjing and Liu ZhuyinSeismological Bureau of Yunnan Province Kunming China 《中国地震研究》1998,(4)
Results of analysis of variation of cross fault short-baseline and short-range leveling in Western Yunnan Earthquake Test Site (WYETS), results show that among five observation stations of cross fault short-baseline and short-range leveling in WYETS before the Lijiang MS7.0 Earthquake occurred in February 1996 only Yongsheng observation station (epicentral distance 82 km) located at Chenghai fault shows great variation about one year before the earthquake. And the nearest observation station, Lijiang (epicentral distance 42 km); presents great coseismic variation, but does not show obvious anomalous variation before the earthquake. There are no significant variations related to the earthquake at the other three observation stations. Two methods are used in analysis of the observed data and some valuable results have been obtained. 相似文献
206.
Lithospheric Geothermal Structure in Yunnan, China 总被引:2,自引:0,他引:2
Zhou Zhenheng Xiang Caiying and Deng WanmingSeismological Bureau of Yunnan Province Kunming China Institute of Geology Chinese Academy of Sciences Beijing China 《中国地震研究》1998,(1)
In this paper,the characteristics of the lateral variations of the deep heat flow and Hthospheric geotemperature distribution in Yunnan have been studied,and the lithospheric geothermal structure has been divided into three types,i.e.the geothermal structure in the typical modern tectonically active region,transitional geological region and stable geological region.Finally,the relationship between the geotherm and seismicitv has been discussed. 相似文献
207.
Geochronological Study of Caledonian Granulite and High-Pressure Gneiss in the Dabie Mountains 总被引:7,自引:0,他引:7
YANG Weiran China University ofGeosciences Wuhan Hubei JIAN Ping Yichang Institute of Geology Mineral Resources CAGS Yichang Hubei 《《地质学报》英文版》1998,72(3):264-270
Using the single-zircon evaporation technique and U-Pb method, the authors have conducted an isotope geochonological study of the Huilanshan granulite and Shima garnet-bearing plagioclase gneiss (" country rocks" of the Shima eclogite) in the Dabie Mountains. The study shows that these rocks have peak metamorphic ages of 443-455 Ma, which are essentially consistent with that of the Caledonian high-ultrahigh pressure eclogites. This indicates the existence of the Caledonian collisional orogeny in the Dabie Mountains. 相似文献
208.
Accelerated Exhumation During the Cenozoic in the Dabie Mountains: Evidence from Fission-Track Ages 总被引:3,自引:0,他引:3
WANG Guocan YANG Weiran Faculty of Earth Science China University ofGeosciences Wuhan Hubei 《《地质学报》英文版》1998,72(4):409-419
Zircon and apatite fission-track dating indicates that the exhumation of the Dabie Mountains tended to be accelerated in the Cenozoic and that the exhumation of the eastern Dabie Mountains was more and more intense from south to north, which is in accordance with the more and more intense dissection from south to north, as is reflected by the modern geomorphologic features of the Dabie Mountains. The accelerated exhumation during the Cenozoic was related to the high elevation of the Dabie Mountains resulting from Late Cretaceous-Palaeogene detachment faulting and subsequent fault-block uplift and subsidence. The average elevation at that time was at least about 660 m higher than that at the present. The intense exhumation lagged behind intense uplift. 相似文献
209.
210.
Honglin Jin Hui Wang Institute of Earthquake Science China Earthquake Administration Beijing China 《地震学报(英文版)》2009,(6)
The Hori’s inverse method based on spectral decomposition was applied to estimate coseismic slip distribution on the rupture plane of the 14 November 2001 MS8.1 Kunlun earthquake based on GPS survey results.The inversion result shows that the six sliding models can be constrained by the coseismic GPS data.The established slips mainly concentrated along the eastern segment of the fault rupture,and the maximum magnitude is about 7 m.Slip on the eastern segment of the fault rupture represents as purely left-la... 相似文献