IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
横断山区全新世特大泥石流与环境变化探讨
Alternative TitleThe Catastrophic Debris-Flow Events and Environment Change in the Eastern Edge of Tibetan Plateau during Holocene
Language中文
程根伟; 吕儒仁; 张文敬
Corresponding Author程根伟
2002
Source Publication青藏高原东缘环境演化与森林生态学术研讨会 ; 青藏高原东缘环境与生态
Pages193-198
Conference Date2001-8-26~31
Conference Place四川成都
Publication Place成都
Publisher四川大学出版社 ; 成都
Funding Organization中国科学院贡嘎山高山生态系统观测试验站
Abstract在青藏高原东缘的横断山区,广泛分布有深厚的土石堆积层和切割剖面,它们的厚度在lOOm~200m左右,内含半磨圆的砾石,具有粘性泥石流的结构特征。从这些土石层的分布范围和巨大的厚度说明,在全新世曾经出现过规模巨大的泥石流事件。本文对其中的典型沉积进行了探讨,确定它们与末次冰期之后的强烈气温升高有关,属于冰雪融水雨水泥石流暴发和沉积类型,现代也经常会发生,只是规模上要小得多。通过泥石流沉积序列还可以推测出地质历史上的山地环境背景和气候变化。
Other AbstractAround the mountain slopes of the eastem edge of Tibetan Plateau,there existed very wide、and thick deposited straturns of debris-soil.These deposition materials spread several huridred kilometers with depth of 100~200 m,and are of the composition structure of stickiness debris-flow with ground gravel in it.Some typical deposition sites and their forming times in western Sichuan. Province had been explored.The extraordinary wide distribution and great thickness,of these ground composition mean that,several catastrophic debris flows must happened in this area in Holocene epic.These events may be caused by the rapidly rising of air temperature after the Last Ice Age.ney can be classified as the debris-flow induced by glacier-snow melting.nis type of debris flows may happen as well in present, but with much small scale.
Keyword青藏高原东缘 全新世 特大泥石流
ISBN7-5614-2470-1
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10695
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation中国科学院水利部成都山地灾害与环境研究所
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
程根伟,吕儒仁,张文敬. 横断山区全新世特大泥石流与环境变化探讨[C]. 成都:四川大学出版社, 成都,2002:193-198.
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