共查询到20条相似文献，搜索用时 156 毫秒
1.
2.
3.
In the past decade, the most authoritative catalogues of Chinese earthquakes and the most popular with seismologists in China are the following:(1) Gu Gongxu, 1983, Catalogue of Chinese Earthquakes;(2) Min Ziqun, 1988, Concise Catalogue of Chinese Earthquakes;(3) Xie Yusuou, 1989, Catalogue of Chinese Earthquakes (M≥ 4.7) from 1900-1980 with Uniform Magnitudes; and(4) Min Ziqun, 1995, Catalogue of Chinese Historical Strong Earthquakes. Earthquakes that occurred before 1900 are mainly documented in historical records.Since 1950s, more recent earthquakes were documented in two major compilations of historical records finished in 1956 and 1983-1987. Separately this effort resulted in two chronicles: two volumes for the first one and five volumes for the second one. The magnitudes are converted from the maximum intensity. These magnitudes, by convention, are connected with surface wave magnitudes. However, it is clear that they do not have any strict seismological definition.The period of 1900-1962 documen 相似文献
4.
《国际泥沙研究》2001,16(4)
I. Soil erosion and sediment yieldDevelopment of Soil Erosion Index Model in Taiwan WatershedsVol. 16, No. 1, pp. 80-90 Modeling of Sediment Yield and Nonpoint Source Pollutant YieldVol. 16, No. 3, pp. 416-420 Runoff Generation Characteristics in Typical Erosion Regions on the Loess PlateauVol. 16, No. 4, pp. 473-485II. Environmental and ecological sedimentationLong Term Effects of Rehabilitation Measures on Bed Load Transport at the Salzach River Vol. 16, No. 2, pp. 95-102 Th… 相似文献
5.
《地震工程与工程振动(英文版)》2006,5(1):159-161
July 3-7, 2006, Alexandroupolis, Greece 16th European Conference of Fracture (ECF 16) Fax: 30-25410-79658 Email: zadami@civil.duth.gr Web Site: http://ecf16.civil.duth.gr July 9-12, 2006, Boulder, Colorado Annual Hazards Research and Applications Workshop Fax: 303-492-2151 Email: Diane.Smith@Colorado.edu Web Site: http://www.colorado.edu/hazards/workshop/2006 July 7-13, 2006, San Diego, California 4th World Conference on Structural Control and Monitorin Fax: 213-744-1426 Email: i… 相似文献
6.
《国际泥沙研究》2005,20(4):366-367
I. Soil Erosion and Sediment Yield Downslope Erosion Process under Upslope Runoff and Sediment Using a Dual-Box System Peiqing Xiao, Fenli Zheng and Wenyi Yao (No. 2, pp. 136-142) Modeling Ephemeral Gully Erosion for Conservation Planning George R. FOSTER (No. 3, pp. 157-175) Hydrologically Driven Mechanisms of Headcut Development M. J. M. R?MKENS and S. N. PRASAD (No. 3, pp. 176-184) Numerical Simulation of Head-cut with a Two-layered Bed Yafei JIA, Tadanori KITAM… 相似文献
7.
《地震工程与工程振动(英文版)》2005,4(1):181-183
JuneZ压了0, 200石,Cardiff, United Kingdom sth International Congress on Environmental Geoteehnies Fax:+44(0)29 20874421 E一mail:SummersC@eardiff.ae.uk Web Site:httP:// wwwgrc￡f.ae.uk/news/index.html A召g“夕r 22一24,200),Vaneouver, BC,Canada The 3rd Interna柱onal Conference on Construetion Materials: Perfo哪anee,Innovations and Structural ImPlieations Fax:604一822一6901 E一mail:tmoser@eivilubc.ea or eonmat05@eivil.ube.ea W亡b Site:httP://w明乃刀.eivilube￡a/eonmat05 June 27一2只2… 相似文献
8.
《地震工程与工程振动(英文版)》2007,6(1):I0003-I0003
E ME1FAEWWMI5EW nt6apmmmnaaheeetxtrgebbbhyyaaa :iIri l iii n816n SSSlllSn2:::-40etiii oa61tttSi1ee-3eeesut1-1r6rE-is:::2t,no67i sr Eh7hhhn ren,9a2 2,ettt5ga 5t attt0a202gi@ppp 7lo(0s000 c:::S-Snt///70i@077/// EiyAawww,77@e6 mlEMi,e,7swww e CsuTiB85mpaa.wwwte)aoucoln .h...canbcosci1 r.yiGhi.rnfi6aeursrgearnoseeimr.rraes,mosee a.I. tasnuygoretcact, cnc. cne.iRh cbr Son/oo.SernimmoicE s/aS/amEiilsnen 5siiCidcs/rairem onn2Rxn d0o.ifhe0sleoxtk7rmg. /ehRiylnst mescardenlru 2d(c01 tE06… 相似文献
9.
《地震工程与工程振动(英文版)》2005,4(2):335-337
January 9-12, 2006, Emmitsburg, Maryland Advanced HAZUS Multi-Hazards for Hurricane Fax: 301-447-1658 Web Site: http://training.fema.gov/emiweb January 12-13, 2006, Los Angeles, California Design and Renovation of Wood Structures Fax: 703-295-6144 Email: conted@asce.org Web Site: http://ww.asce.org/conted/ January 12-13, 2006, Miami, Florida Dam Safety and Rehabilitation Fax: 703-295-6144 Email: conted@asce.org Web Site: http://www.asce.org/conted/ 相似文献
10.
《地震工程与工程振动(英文版)》2006,5(2):309-311
January 15-16, 2007, Orlando, Florida Structural Condition Assessment of Existing Structures Fax: 703-295-6222 Email: kjarvis@asce.org Web Site: http://www.asce.org/conted/seminars January 18-19, 2007, Denver, Colorado Structural Condition Assessment of Existing Structures Fax: 703-295-6222 Email: kjarvis@asce.org Web Site: http://www.asce.org/conted/seminars January 24-26, 2007, St. Louis, Missouri Design of Foundations for Dynamic Loads Fax: 703-295-6222 Email: kjarvis@asce.org W… 相似文献
11.
12.
Ninfa Bennington Clifford Thurber Kurt L. Feigl Jessica Murray-Moraleda 《Pure and Applied Geophysics》2011,168(10):1553-1565
Several studies of the 2004 Parkfield earthquake have linked the spatial distribution of the event’s aftershocks to the mainshock
slip distribution on the fault. Using geodetic data, we find a model of coseismic slip for the 2004 Parkfield earthquake with
the constraint that the edges of coseismic slip patches align with aftershocks. The constraint is applied by encouraging the
curvature of coseismic slip in each model cell to be equal to the negative of the curvature of seismicity density. The large
patch of peak slip about 15 km northwest of the 2004 hypocenter found in the curvature-constrained model is in good agreement
in location and amplitude with previous geodetic studies and the majority of strong motion studies. The curvature-constrained
solution shows slip primarily between aftershock “streaks” with the continuation of moderate levels of slip to the southeast.
These observations are in good agreement with strong motion studies, but inconsistent with the majority of published geodetic
slip models. Southeast of the 2004 hypocenter, a patch of peak slip observed in strong motion studies is absent from our curvature-constrained
model, but the available GPS data do not resolve slip in this region. We conclude that the geodetic slip model constrained
by the aftershock distribution fits the geodetic data quite well and that inconsistencies between models derived from seismic
and geodetic data can be attributed largely to resolution issues. 相似文献
13.
2015年4月25日尼泊尔爆发MW7.9地震,继而引发5月12日MW7.3级余震,GPS、InSAR监测到震源区及周边大范围同震形变.本文以国内外的GPS和InSAR同震形变为约束,考虑喜马拉雅断裂带岩石圈垂向分层和横向差异的影响,反演主喜马拉雅逆冲断裂在这次主震和余震中破裂面形状和滑动分布.结果显示,主震从USGS确定的震中位置向东偏南延伸100km以上,破裂地面迹线与主前缘逆冲断裂迹线基本一致.破裂面倾角约7°~11°,大部分破裂集中在深度8~20km,同余震分布深度一致.主震最大滑动量约6.0~6.6m,位于14km深处.余震破裂集中在震中附近30km范围内,填补了主震东部破裂空区,最大滑动约3.6~4.6 m,位于13km深.深度20km以下基本没有破裂.地壳介质不均匀性对破裂滑动分布的影响较大,介质不均匀模型的观测值不符值比各向同性弹性半空间模型降低10%以上.本文地震破裂模型特征与地震反射剖面、以及根据震间期大地测量数据反演的喜马拉雅深部蠕滑剖面极其相似.跨喜马拉雅断裂剖面的震间形变量与地震破裂滑移量直接相关.以此推算,尼泊尔中部大震原地复发周期在300年以上. 相似文献
14.
Mahdi Motagh Jürgen Klotz Farokh Tavakoli Yahya Djamour Siavash Arabi Hans-Ulrich Wetzel Jochen Zschau 《Pure and Applied Geophysics》2006,163(1):1-18
We used new precise leveling data acquired 40 days after the Bam earthquake in combination with radar interferometry observations
from both ascending and descending orbits to investigate static deformation associated with the 2003 Bam earthquake. We invert
this geodetic data set to gain insight into the fault geometry and slip distribution of the rupture. The best-fitting dislocation
model is a steeply east-dipping right-lateral strike-slip fault that has a size of 11 by 8 km and strikes N2°W. We find that
such smooth geometry fits available geodetic data better than previously proposed models for this earthquake. Our distributed
slip model indicates a maximum strike slip of 3 m occurring about 3 to 5 km deep. The slip magnitude and depth of faulting
taper to the north, where the fault approaches the Bam city. Inclusion of crustal layering increases the amount of maximum
slip inferred at depth by about 4%. 相似文献
15.
Aseismio fault slip and block deformation in North China 总被引：1，自引：0，他引：1
Lanbo Liu Alan T. Linde I. Selwyn Sacks Shihai He 《Pure and Applied Geophysics》1996,146(3-4):717-740
In North China, the tectonic fault-block system enables us to use the Discontinuous Deformation Analysis (DDA) method to simulate the long-term cross-fault survey and other geodetic data related to aseismic tectonic deformation. By the simulation we have found that: (1) Slips on faults with different orientation are generally in agreement with the ENE-WSW tectonic stress field, but the slip pattern of faulting can vary from nearly orthogonal, to pure shear along the strike of the faults, this pattern cannot be explained by simple geometric relation between the strike of the fault and the direction of the tectonic shortening. This phenomenon has been observed at many sites of cross-fault geodetic surveys, and might be caused by the interactions between different blocks and faults. (2) According to the DDA model, if the average aseismic slip rate along major active faults is at the order of several tenths of millimeter per year as observed by the cross-fault geodetic surveys, the typical strain rate inside a block is at the order of 10–8 year–1 or less, so that the rate of 10–6 year–1, as reported by observations in smaller areas, cannot be the representative deformation rate in this region. (3) Between the slips caused by regional compression and block rotation, there is a possibility that the sense of slip caused by rigid body rotation in two adjacent blocks is opposite to the slip caused by the tectonic compression. But the magnitude of slip resulting from the tectonic compression is much larger than that due to the block rotation. Thus, in general, the slip pattern on faults as a whole agrees with the sense of tectonic compression in this region. That is to say, the slip caused by regional compression dominates the entire slip budget. (4) Based on (3), some observed slips in contradiction to ENE tectonic stress field may be caused by more localized sources, and have no tectonic significance. 相似文献
16.
本文根据三角网统一平差和跨断层测量资料，利用位错理论的反演方法，计算了唐山和北京，怀来地区几条主要断层滑动速率和滑动方向，其结果与我们用有限元方法计算的断层应力场配套。并获得三点结果：（１）断层滑动速率大，则断层上庆力高，反之亦然；（２）断层滑动方向与断层应力场方向配套；（３）当跨断层短线大度年变化持续出现线笥关系时，断层浅部与深部滑动一致，而且断层浅部滑速率大，此却表示有发生地震的危险性。 相似文献
17.
伽师地区现今地壳运动方式、变动幅度和形变应变特征对研究该地区孕震环境具有重要作用．利用1994和1998年两次GPS大地测量,我们监测到伽师地区相对于北天山哈萨克地块的地壳缩短速率大约为19mm/a,与20世纪以来地震学（地震矩张量）资料估计的速率（约13mm/a）相比,GPS测定的速率高约50％．大地测量与地震学对南天山（伽师）地区地壳运动速率的估值差异,既可能说明该地区20世纪以来存在大量无震、震间应变,也可能表示至今与地震活动有关的断层变动尚不足以消减整个天山地区的现今变形．无论何种可能,从应力应变积累的角度看,都意味着天山西段及帕米尔东北侧一带发生强震的可能性将长期存在． 相似文献
18.
19.
利用川滇地区1991-1999年的高精度GPS观测处理结果,采用稳健 - 贝叶斯最小二乘算法与多断裂位错模型,分析研究了川滇菱形块体主要边界运动的定量模型.反演分析表明:川西鲜水河断裂带和安宁河断裂带的左旋走滑运动速率约30mm/a,倾滑运动(逆断层)速率分别约9-11mm/a;滇西红河断裂带、程海断裂带、鹤庆 - 洱源断裂带的走滑运动(分别为右旋、左旋、左旋)速率分别约、11、13mm/a,倾滑运动(正断层)速率分别约16、24、16mm/a;如将其视为弹性应力应变积累,则各断层每年有相当于6级左右的地震能量积累.依据上述反演结果,模拟了区域主要断层运动引起的水平位移、应变速率场图像,显示了边界断裂及其之间的相互作用. 相似文献
20.
Heterogeneous fault motion of the 1993 Hokkaido Nansei-Oki earthquake is studied by using seismic, geodetic and tsunami data, and the tsunami generation from the fault model is examined. Seismological analyses indicate that the focal mechanism of the first 10 s, when about a third of the total moment was released, is different from the overall focal mechanism. A joint inversion of geodetic data on Okushiri Island and the tide gauge records in Japan and Korea indicates that the largest slip, about 6 m, occurred in a small area just south of the epicenter. This corresponds to the initial rupture on a fault plane dipping shallowly to the west. The slip on the northernmost subfault, which is dipping to the east, is about 2 m, while the slips on the southern subfaults, which are steeply dipping to the west, are more than 3 m. Tsunami heights around Okushiri Island are calculated from the heterogeneous fault model using different grid sizes. Computation on the smaller grids produces large tsunami height that are closer to the observed tsunami runup heights. Tsunami propagation in the nearly closed Japan Sea is examined as the free oscillation of the Japan Sea. The excitation of the free oscillation by this earthquake is smaller than that by the 1964 Niigata or 1983 Japan Sea earthquake. 相似文献