| 昆仑山口西8.1级地震的崩塌发育特点 |
| |
| 引用本文： | 王赞军,党光明,田勤俭.昆仑山口西8.1级地震的崩塌发育特点[J].中国地震,2003,19(2):158-165,T001. |
| |
| 作者姓名： | 王赞军 党光明 田勤俭 |
| |
| 作者单位： | 1. 青海省地震局,西宁,810001
2. 中国地震局分析预报中心,北京,100036 |
| |
| 基金项目： | 青海省科技厅 2 0 0 2年重点科技攻关项目 (2 0 0 2- N -14 1) |
| |
| 摘 要： | 昆仑山口西8．1级地震造成20余处崩塌体或崩塌带，主要分布在地震地表破裂带附近，以库赛湖以西为主。崩塌可分为基岩崩塌、土体崩塌、冰体崩塌、雪崩4种类型。本文对崩塌的空间分布和发育特点进行了分析，通过与其它大地震相比，认为本次地震崩塌规模较小，除介质岩性、地形地貌、气候等因素外，地震动不十分强烈是崩塌规模偏小的重要原因。这种地表破裂带长而地震动偏弱的现象，是本次地震破裂的重要特点，可能与先存断裂的结构有关。
|
| 关 键 词： | 昆仑山口西 地震崩塌 地震地质灾害 震害调查 地理地貌环境 基岩崩塌 |
| 文章编号： | 1001-4683(2003)02-0158-08 |
Characteristics of Collapse during the Western Kunlunshan Pass Earthquake with Ms 8.1 |
| |
| Wang Zanjun,Dang Guangming,Tian Qinjian.Characteristics of Collapse during the Western Kunlunshan Pass Earthquake with Ms 8.1[J].Earthquake Research in China,2003,19(2):158-165,T001. |
| |
| Authors: | Wang Zanjun Dang Guangming Tian Qinjian |
| |
| Institution: | Wang Zanjun 1) Dang Guangming 1) Tian Qinjian 2) 1) |
| |
| Abstract: | Collapse occurred at more than 20 sites druing the western Kunlunshan Pass earthquake with M S 8 1.They were distributed nearby the earthquake surface rupture zone,mainly at the western Hongshui river outlet.Some characteristics of collapse were analyzed.By comparing with the other great earthquakes,we think that collapse of the earthquake is smaller in size.Beside lithologic,topographic and climate condition,less intensity of earthquake ground motion in this earthquake may be an important reason of the smaller size collapse.The phenomena of longer surface rupture but weaker ground motion is an important character of this earthquake.It may be related to specific structure of the seismogenic fault. |
| |
| Keywords: | Western Kunlunshan Pass Earthquake with MS 8 1 Earthquake collapse |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
