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1.
ＡｕｎｉｆｏｒｍｃａｔａｌｏｇｏｆｅａｒｔｈｑｕａｋｅｓｆｏｒｓｅｉｓｍｉｃｈａｚａｒｄａｓｅｓｍｅｎｔｉｎＩｒａｎＮｏｏｒｂａｋｈｓｈＭｉｒｚａｅｉ１，２）ＭＥＮＧ－ＴＡＮＧＡＯ１）（高孟谭）ＹＵＮ－ＴＡＩＣＨＥＮ１）（陈运泰）ＪＩＡＮＷＡＮＧ１... 相似文献
2.
Fractal research of fault gouge 总被引：1，自引：0，他引：1
ＦｒａｃｔａｌｒｅｓｅａｒｃｈｏｆｆａｕｌｔｇｏｕｇｅＳＨＵＮ－ＭＥＩＳＨＡＯ（邵顺妹）ａｎｄＪＩＮ－ＣＨＡＮＧＺＯＵ（邹瑾敞）ＥａｒｔｈｑｕａｋｅＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＬａｎｚｈｏｕ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉｃａｌＢｕｒｅａ... 相似文献
3.
ＴｈｅｐｒｉｎｃｉｐｌｅｏｆｃｏｕｐｌｅｄｓｔｒｅｓｒｅｌｅａｓｅｍｏｄｅｌａｎｄｉｔｓａｐｐｌｉｃａｔｉｏｎＪＩＥＬＩＵ１）（刘杰）ＤＡＶＩＤＶＥＲＥＪＯＮＥＳ２）ＬＩＭＡ１）（马丽）ＹＡＯＬＩＮＳＨＩ３）（石耀林）ＪＩＡＮＣＡＮＧＺＨＵＡ... 相似文献
4.
Ａｎｅｗｉｎｖｅｓｔｉｇａｔｉｏｎｏｎｄｒｉｆｔｏｆｂａｓｅ┐ｌｉｎｅｖａｌｕｅｉｎｇｅｏｍａｇｎｅｔｉｃｏｂｓｅｒｖａｔｉｏｎＤＯＮＧ－ＭＥＩＹＡＮＧ（杨冬梅）ＹＵ－ＦＥＮＧＡＯ（高玉芬）ＹＯＮＧ－ＦＥＮＺＨＡＯ（赵永芬）ＷＥＩ－ＢＥＩＨＵＡＮＧ... 相似文献
5.
ＴｈｅｑｕａｌｉｔｙｅｘａｍｉｎａｔｉｏｎｏｆｏｂｓｅｒｖａｔｉｖｅｄａｔａａｔＧｅｏｍａｇｎｅｔｉｃｏｂｓｅｒｖａｔｏｒｉｅｓＡｎ－ＬｏｎｇＣＨＥＮＧ（程安龙），Ｊｉｎ－ＰｉｎｇＺＨＯＵ（周锦屏），Ｙｕ－ＦｅｎＧＡＯ（高玉芬）Ｘｕｅ－ＭｉｎＺＨＡＯ... 相似文献
6.
ＣｒｕｓｔａｌｄｅｆｏｒｍａｔｉｏｎｏｆｓｅｉｓｍｏｇｅｎｉｃｆａｕｌｔａｎｄｉｔｓｓｕｒｏｕｎｄｉｎｇａｒｅａａｆｔｅｒｔｈｅＴａｎｇｓｈａｎｅａｒｔｈｑｕａｋｅＪＵＥＭＩＮＸＩＥ（谢觉民）ＲＵＯＢＡＩＷＡＮＧ（王若柏）ＷＡＮＧＪＵＢＯ（... 相似文献
7.
ＡｐｐｌｉｃａｔｉｏｎｏｆｃｅｒｔａｉｎｔｙｆａｃｔｏｒｓｏｆｅａｒｔｈｑｕａｋｅｐｒｅｃｕｒｓｏｒｙａｎｏｍａｌｙｅｖｉｄｅｎｃｅｓＣＦ（Ｅ）ＺＨＡＯ－ＢＩＺＨＥＮＧ（郑兆），ＪＵＮＺＨＡＮＧ（张军）ａｎｄＭＥＩＱＩＮＧ（庆梅）Ｓｅｉｓｍｏｌｏ... 相似文献
8.
ＴｈｅｍｅｃｈａｎｉｓｍｏｆｒｅｇｉｏｎａｌｇｒａｖｉｔｙｃｈａｎｇｅｓｂｅｆｏｒｅａｎｄａｆｔｅｒｔｈｅＴａｎｇｓｈａｎｅａｒｔｈｑｕａｋｅＲＵＩ－ＨＡＯＬＩ（李瑞浩）ＪＩＡＮ－ＬＩＡＮＧＨＵＡＮＧ（黄建梁）ＨＵＩＬＩ（李辉）ＤＯＮＧ－ＳＨＥＮＧ... 相似文献
9.
ＲｅｓｅａｒｃｈｏｎｔｈｅｓｅｉｓｍｏｔｅｃｔｏｎｉｃｓｏｆｔｈｅＪａｎ┐ｕａｒｙ１７，１９９５ＨａｎｓｈｉｎＭ７．２ｅａｒｔｈｑｕａｋｅＺＨＵ－ＪＵＮＨＡＮ１）（韩竹君），ＦＵ－ＨＵＲＥＮ２）（任伏虎），ＹｕｊｉｒｏＯｇａｗａ２）（小川雄二郎）ａ... 相似文献
10.
ＡｎａｌｔｅｒｎａｔｅａｌｇｏｒｉｔｈｍｏｆｎｕｍｅｒｉｃａｌｓｉｍｕｌａｔｉｏｎｉｎａｎｉｓｏｔｒｏｐｉｃｍｅｄｉａＤＩＮＧ－ＨＵＩＹＡＮＧ（杨顶辉），ＪＩ－ＷＥＮＴＥＮＧ（滕吉文）ａｎｄＺＨＯＮＧ－ＪＩＥＺＨＡＮＧ（张中杰）Ｉｎｓｔｉｔｕｔｅｏ... 相似文献
11.
Vertical coseismic deformation on non-causative fault caused by remote strong earthquakes(epicentral distance≥1500 km,MS≥7.0)are observed by fault-monitoring instruments of new type during recent two years.The monitor-ing result shows,delay time,maximum amplitude and duration of vertical deformation on the non-causative faulthave remarkable close relationship with earthquakes magnitude and epicentral distance.The delay time of verticalcoseismic deformation have positive linear relationship with epicentral distance.The velocity of coseismic defor-mation is 5.5 km/s,close to the velocity of surface wave in granite.The logarithms of maximum amplitude of co-seismic deformation and epicentral distance have remarkable linear relationship with magnitude.The greater themagnitude and the closer the epicentral distance are,the bigger the maximum amplitude of coseismic deformationon non-causative fault will be.Relative to the epicentral distance,the magnitude is the most important factor to theduration of coseismic vertical deformation on the non-causative fault.Stronger earthquake causes longer vibrationduration of coseismic deformation.The experiential equation of co-seismic deformation faults obtained by thiswork is significant on the coseismic deformation research. 相似文献
12.
GPS monitoring of temporal deformation of the Xianshuihe fault 总被引：3，自引：0，他引：3
Min Wang ZhengKang Shen WeiJun Gan Hua Liao TieMing Li JinWei Ren XueJun Qiao QingLiang Wang YongLin Yang Kato Teruyuki Peng Li 《中国科学D辑(英文版)》2008,51(9):1259-1266
Highly precise (σ ~1 mm) temporal deformation measurements are taken across the Xianshuihe fault from two pairs of continuous GPS stations straddling the fault. Baseline vector changes of the two pairs of stations show clearly the difference in deformation behavior between the Qianning and Daofu segments of the fault: the former deforms steadily, and the latter deforms with a strong transient component. The transient deformation across the Daofu segment is possibly related to its irregular geometry, where the fault splits into two branches, that is, the east and west branches. An attempt is made to interpret the baseline vector changes using a kinematic fault model composed of a brittle layer in the upper crust, a ductile layer in the lower crust, and a transition zone in between. The slip in the transition zone of the south segment of the Xianshuihe fault is steady. The slips in the transition zones of the north and Daofu segments of the Xianshuihe fault, however, are not steady, and the average slip rates there are higher than that of the south segment. The difference in deformation behavior is probably associated with the rheological properties of the fault interface, suggesting that the overall fault strength of the south segment is greater than those of the north and Daofu segments, corresponding to longer earthquake recurrence time. 相似文献
13.
It is deduced on the basis of field investigation that the total length of the stratigraphic fault associated with the great
Haiyuan 8.5 magnitude earthquake of 1920 was 225 km. This fault was formed by 6 secondary faults with different geometric
parameters, which align regularly inen echelon arrangement. Each secondary fault can be divided into three segments with different characteristics of deformation where
the middle segment was mainly of the horizontal strike—slip fault while another two segments the vertical deformation as shown
by the features of reverse or normal faults. It is also shown by the data of vertical and horizontal displacements that the
horizontal displacement approached a maximum at the middle segment for each secondary fault and gradually decreased toward
and finally disappeared at both ends of each segment while in contrast the vertical displacement was minimum at the middle
and became large at both ends of the segment. The feature of the multiple peaks appeared in the deformation as shown by the
earthquake displacements along the whole fault. This feature indicates that the 6 secondary faults associated with the great
Haiyuan earthquake were the horizontal interrupted planes (i.e., dislocation surface) which were independent on each other, and hence each dislocation surface may represent an independent
secondary fracture event of the earthquake. We thus think that the 6 relatively independent secondary events which occurred
successfully might result in the great 8.5 magnitude Haiyuan earthquake.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,13, 21–31, 1991.
This project is sponsored by the Chinese Joint Seismological Science Foundation. 相似文献
14.
Current tectonic deformation and seismogenic characteristics along the northeast margin of Qinghai -Xizang block 总被引：2，自引：0，他引：2
Introduction The northeast margin of Qinghai-Xizang block has become the place with close attentions from geo-specialists at home and abroad for its significant tectonic movement and intensive seismicity. Quite a number of achievements have been obtained from the studies on geological structures and strong earthquake activities (DING, LU, 1989, 1991; GUO, et al, 1992, 2000; GUO, XIANG, 1993; HOU, et al, 1999; Tapponnier, et al, 1990; Gaudemer, et al, 1995). In the Development Program… 相似文献
15.
Ｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｔｅｃｔｏｎｉｃｄｅｆｏｒｍａｔｉｏｎｆｉｅｌｄａｂｏｕｔｓｔｒｉｋｅ－ｓｌｉｐｅａｒｔｈｑｕａｋｅ－ｇｅｎｅｒａｔｉｎｇｓｔｒｕｃｔｕｒｅｉｎｔｈｅＣｈｉｎｅｓｅｍａｉｎｌａｎｄ环文林，张晓东，宋昭仪Ｗｅｎ－Ｌｉｎ... 相似文献
16.
Rheological properties of the crust and upper mantle are essential data that are needed in modelling the mechanical behaviour of the shallow part of the earth. The importance of such data has been seen in discussions about the strength profile of continen… 相似文献
17.
In this study, the spatio-temporal evolution of Yellowstone deformation between 1992 and 2009 is monitored using interferometric
synthetic aperture radar (InSAR) data acquired by the European Remote-Sensing Satellites (ERS-1 and ERS-2) and the Environmental
Satellite (ENVISAT). These data are combined with continuous global positioning system (GPS) measurements to identify four
discrete episodes of caldera subsidence and uplift, these episodes are: 1992–1995 (subsidence of 2.7 cm/year), 1996–2000 (subsidence
of 0.5 cm/year, with local uplift of 1.7 cm/year at Norris), 2000–2004 (subsidence of 0.7 cm/year, with local uplift of 0.6 cm/year
at Norris), and 2004–2009 (uplift of 3–8 cm/year, with local subsidence of 1–4 cm/year at Norris). We construct the full three-dimensional
velocity field of Yellowstone deformation for 2005–2006 from ascending and descending ENVISAT orbits. The InSAR three-dimensional
velocity field and three-component GPS measurements indicate that the majority of the observed deformation (3–8 cm/year) across
the Yellowstone caldera and near Norris Geyser Basin (NGB) occurred in the vertical direction between the summers of 2005
and 2006. During this time, significant lateral displacements of 3–7 cm/year also occurred in the east–west direction at the
southeastern and western rims of the Yellowstone caldera and in the area between Hebgen Lake and NGB. Minor north–south displacements
of about 0.2 cm/year also occurred, however, in the southwestern section of the caldera and near Yellowstone Lake during the
same period. The calculated three-dimensional velocity field for 2005–2006 implies the existence of two pressure-point sources,
beneath the two structural resurgent domes in the Yellowstone caldera, connected by a planar conduit, rather than a single,
large sill as proposed in previous studies. Furthermore, no measurable displacements occurred along any fault zone across
the caldera during the entire period of observation (1992–2009). Therefore, we infer that magmatic and hydrothermal processes
beneath the Yellowstone caldera and NGB were the main sources of deformation. 相似文献
18.
Geological analysis and FT dating of the large-scale right-lateral strike-slip movement of the Red River fault zone 总被引：1，自引：1，他引：1
XIANG HongFa WAN JingLin HAN ZhuJun GUO ShunMin ZHANG WanXia CHEN LiChun & DONG XingQuan Institute of Geology China Earthquake Administration Beijing China Earthquake Administration of Yunnan Province Kunming China 《中国科学D辑(英文版)》2007,50(3):331-342
Tectonically, the large-scale right-lateral strike-slip movement along the Red River fault zone is char-acterized at its late phase with the southeastward extension and deformation of the Northwestern Yunnan normal fault depression on its northern segment, and the dextral shear displacement on its central-southern segment. Research of the relations between stratum deformation and fault movement on the typical fault segments, such as Jianchuan, southeast Midu, Yuanjiang River, Yuanyang, etc. since the Miocene Epoch shows that there are two times dextral faulting dominated by normal shearing occurring along the Red River fault zone since the Miocene Epoch. The fission track dating (abbrevi-ated to FT dating, the same below) is conducted on apatite samples collected from the above fault segments and relating to these movements. Based on the measured single grain’s age and the con-fined track length, we choose the Laslet annealing model to retrieve the thermal history of the samples, and the results show that the fault zone experienced two times obvious shear displacement, one in 5.5 ± 1.5 MaBP and the other in 2.1± 0.8 MaBP. The central-southern segment sees two intensive uplifts of mountain mass in the Yuanjiang River-Yuanyang region at 3.6―3.8 MaBP and 1.6―2.3 MaBP, which correspond to the above-mentioned two dextral normal displacement events since the late Miocene Epoch. 相似文献
19.
Antonio Eff-Darwich Olivier Grassin José Fernández 《Pure and Applied Geophysics》2008,165(6):1049-1070
Continuous monitoring of ground deformation in the volcanic island of Tenerife, Canary Islands, is based on GPS networks,
since there are as yet no tiltmeter stations installed on the island. However, there is a world-class astronomical observatory
on the island, the El Teide Observatory, where four tiltmeters, two aligned in the North-South and the other two in the East-West,
are monitoring the movements of the solar telescope THEMIS. THEMIS (Heliographic Telescope for the Study of Solar Magnetism
and Instabilites) is among the three largest solar telescopes in the world. Since THEMIS is located a few kilometers from
the main volcanic structures of the island, in particular the El Teide-Pico Viejo stratovolcano, and the precision of the
inclinometers is comparable to those used in geophysical studies, we carried out the analysis of the tilt measurements for
the period 1997–2006. The tiltmeters at THEMIS are placed in the seventh floor of a tower, hence their sensitivity to geological
processes is reduced compared to geophysical installations. However, THEMIS measurements are the only terrestrial data available
in Tenerife for such a long period of observations, which include the sustained increase in seismic activity that started
in 2001. In this sense, a significant change was found in the East-West tilt of approximately 35 μ-radians between the years
2000 and 2002. Some theoretical models were calculated and it was concluded that such tilt variation could not be due to dike
intrusions, nor a volcanic reactivation below the El Teide-Pico Viejo volcano. The most likely explanation comes from dislocations
produced by a secondary fault associated to a major submarine fault off the eastern coast of Tenerife. In any case, taking
into account the nearly permanent data recording at THEMIS, they could be considered as a complement for any ground deformation
monitoring system in the island. 相似文献
20.
Salvatore Alparone Graziella Barberi Alessandro Bonforte Vincenza Maiolino Andrea Ursino 《Bulletin of Volcanology》2011,73(7):869-885
We carried out a study of the seismicity and ground deformation occurring on Mt. Etna volcano after the end of the 2002–2003
eruption and before the onset of the 2004–2005 eruption. Data were recorded by the permanent local seismic network run by
Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Catania and by geodetic surveys carried out in July 2003 and July 2004 on the GPS network. Most earthquakes were grouped in two main
clusters located in the northeastern and southeastern sectors of the volcano. The areal distribution of seismic energy associated
with the recorded earthquakes allowed us to highlight the main seismogenic areas of Mt. Etna. In order to better understand
the kinematic processes of the volcano, 3D seismic locations were used to compute fault plane solutions, and a selected dataset
was inverted to determine stress and strain tensors. The focal mechanisms in the northeastern sector show clear left-lateral
kinematics along an E-W fault plane, consistent with events occurring along the Pernicana Fault system. The fault plane solutions
in the southeastern sector show mainly right-lateral kinematics along a NNE and ENE fault plane and left lateral-kinematics
along NW fault planes that together suggest roughly E-W oriented compression. Surface ground deformation affecting Mt. Etna
measured by GPS surveys highlighted a marked inflation during the same period and exceptionally strong seawards motion of
its eastern flank. The 2D geodetic strain tensor distribution was calculated and the results show mainly ENE-WSW extension
coupled with WNW-ESE contraction, indicating right-lateral shear along a NW-SE oriented fault plane. The different deformation
of the eastern sector of the volcano, as measured by seismicity and ground deformation, must be interpreted by considering
the different depths of the two signals. Seismic activity in the southeastern sector of volcano is located between 3 and 8 km b.s.l.
and can be associated with a very strong additional E-W compression induced by a pressurizing source just westwards and at
the same depth, located by inverting GPS data. Ground deformation, in contrast, is mainly affected by the shallower dynamics
of the fast moving eastern flank which produces a shallower opposing E-W extension. The entire dataset shows that two different
processes affect the eastern flank at the same time but at different depths; the boundary is clearly located at a depth of
3 km b.s.l. and could represent the décollement surface for the mobile flank. 相似文献