| The Frozen Soils and Devastating Characteristics of West Kunlun Mountains Pass Ms 8.1 Earthquake Area in 2001 |
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| 作者姓名： | Chen Yongming |
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| 作者单位： | [1]LanzhouBaseofInstituteofEarthquakePrediction,CEA,Lanzhou730000 [2]ChinaCommunicationPlanning,Survey＆DesignInstituteCo.Ltd.ofGansuProvince,Lanzhou730030,China |
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| 基金项目： | ApublicBenefitFoundationoftheMinistryofScienceandTechnologyofChina(2002DIA10001)，ContributionNo.LC2004064,SeismologicalInstituteofLanzhou,ChinaEarthquakeAdministration. |
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| 摘 要： | The investigation on damages to frozen soil sites during the West Kunlun Mountains Pass earthquake with Ms 8.1 in 2001 shows that the frozen soil in the seismic area is composed mainly of moraine, alluvial deposit, diluvial deposit and lacustrine deposit with the depth varying greatly along the earthquake rupture zone. The deformation and rupture of frozen soil sites are mainly in the form of coseismic fracture zones caused by tectonic motion and fissures,liquefaction, seismic subsidence and collapse resulting from ground motion. The earthquake fracture zones on the surface are main brittle deformations, which, under the effect of sinlstral strike-slip movement, are represented by shear fissures, tensional cracks and compressive bulges. The distribution and configuration patterns of deformation and rupture such as fissures, liquefaction, seismic subsidence and landslides are all related to the ambient rock and soil conditions of the earthquake area. The distribution of earthquake damage is characterized by large-scale rupture zones, rapid intensity attenuation along the Qinghai-Xizang (Tibet) Highway, where buildings distribute and predominant effect of rock and soil conditions.
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| 关 键 词： | 昆仑山垭口 地震 冻土 破坏特震 地表运动 |
The Frozen Soils and Devastating Characteristics of West Kunlun Mountains Pass Ms 8.1 Earthquake Area in 2001 |
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| Chen Yongming.The Frozen Soils and Devastating Characteristics of West Kunlun Mountains Pass Ms 8.1 Earthquake Area in 2001[J].Earthquake Research in China,2004,18(4):337-347. |
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| Authors: | Chen Yongming |
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| Institution: | Lanzhou Base of Institute of Earthquake Prediction, CEA, Lanzhou 730000, China |
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| Abstract: | The investigation on damages to frozen soil sites during the West Kunlun Mountains Pass earthquake with M S 8.1 in 2001 shows that the frozen soil in the seismic area is composed mainly of moraine, alluvial deposit, diluvial deposit and lacustrine deposit with the depth varying greatly along the earthquake rupture zone. The deformation and rupture of frozen soil sites are mainly in the form of coseismic fracture zones caused by tectonic motion and fissures, liquefaction, seismic subsidence and collapse resulting from ground motion. The earthquake fracture zones on the surface are main brittle deformations, which, under the effect of sinistral strike-slip movement, are represented by shear fissures, tensional cracks and compressive bulges. The distribution and configuration patterns of deformation and rupture such as fissures, liquefaction, seismic subsidence and landslides are all related to the ambient rock and soil conditions of the earthquake area. The distribution of earthquake damage is characterized by large-scale rupture zones, rapid intensity attenuation along the Qinghai-Xizang (Tibet) Highway, where buildings distribute and predominant effect of rock and soil conditions. |
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| Keywords: | The West Kunlun Mountains Pass M S8 1 earthquake Frozen soil Devastating characteristics |
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