喜马拉雅山珠穆朗玛峰北坡绒布冰川度日因子研究     

刘伟刚  效存德  刘景时  王建  王航  柳景峰  刘娜  张通  林霞 《冰川冻土》2014,36(5)

根据喜马拉雅山珠穆朗玛峰绒布冰川消融资料和同期气温数据,分析了该冰川度日因子时空变化.研究结果显示:绒布冰川度日因子随海拔升高而增加,海拔5 260 m、5 350 m、5 450 m、5 500 m和5 750 m处冰川度日因子平均值分别为3.27 mm·℃-1·d-1、8.21 mm·℃-1·d-1、23.19 mm·℃-1·d-1、46.41 mm·℃-1·d-1和42.05 mm·℃-1·d-1;不同厚度表碛下的冰川度日因子有所差异;但对同一观测点来说,度日因子随时间变化较小;在喜马拉雅山南北坡海拔5 350 m的地区,冰川度日因子普遍较小(10.5 mm·℃-1·d-1);而在南北坡海拔5 350 m的地区,度日因子普遍较大(大部分15.8 mm·℃-1·d-1),相比南坡,喜马拉雅山北坡冰川度日因子更大.  相似文献   

Upwelling Process of the Western Himalaya Mountains: Height and Velocity Estimation Evidenced by Formation and Evolution of the Zanda Basin,Tibet,China   总被引：1，自引：1，他引：0  

ZHU Dagang  MENG Xian’gang  SHAO Zhaogang  YANG Chaobin  HAN Jian’en  YU Ji  MENG Qingwei  Lü Rongping 《《地质学报》英文版》2010,84(2):280-295

<正>Based on field geological survey,stratigraphic section measurement and indoor comprehensive investigation,the Zanda Basin's tectonic location in the Himalaya Plate was ascertained,and the formation and evolution of the Zanda Basin during the Pliocene to Early Pleistocene was classified as six stages:(a) primary rift-faulting stage,(b) quick rift-faulting Stage,(c) intensive rift-faulting stage,(d) stasis stage,(e) secondary rift-faulting stage,and(f) secondary quick rift-faulting stage.Based on this six-staged formation-evolution theory of the Zanda Basin,the upwelling process of the Western Himalaya Mountains from the Pliocene to Early Pleistocene was classified as the following five stages:(a) slow upwelling stage(5.4-4.4 Ma),(b) mid-velocity upwelling stage(4.4-3.5 Ma),(c) quick upwelling stage(3.5-3.2 Ma),(d) upwelling-ceasing stage(3.2-2.7 Ma), and(e) quick upwelling stage(2.7 Ma).Research has shown that in the duration from the Early Pliocene(4.7 Ma) to the End of Pliocene(2.67 Ma),which lasted 2.03 million years,the Himalaya Mountains had uplifted 1500 m at a velocity of 0.74 mm/a;this belongs to a mid-velocity upwelling. During the 1.31 million years in the Early Stage of the Early Pleistocene,the Himalaya Mountains had risen up another 1500 m at a velocity of 1.15 mm/a;this is a rather quick upwelling.All of these data have shown that the upwelling of the Western Himalaya Mountains is along a complicated process with multi-stages,multi-velocities,and non-uniformitarian features.  相似文献   

喜马拉雅山地区重大滑坡灾害及其与地层岩性的关系研究   总被引：2，自引：0，他引：2  

刘春玲  祁生文  童立强  安国英  李小慧 《工程地质学报》2010,18(5):669-676

位于青藏高原南部的喜马拉雅山地区,是高原隆升最快的地方,这里内外动力作用异常活跃,是我国重大滑坡灾害最严重的地区之一,重大滑坡灾害对国民经济和社会发展带来了极大危害。本文在对研究区的地质、地理背景进行了详细分析的基础上,利用遥感解译和实地调查相结合的手段,研究了该区重大滑坡灾害的分布及其与地层岩性的关系,将本区地层岩性大致划分为13个工程地质岩组:松散岩组、软弱岩组、软弱岩夹较软弱岩组、软弱岩夹较坚硬岩组、较软弱岩组、较软弱岩夹软弱岩组、较软弱岩夹较坚硬岩组、较软弱岩夹坚硬岩组、较坚硬岩与软弱岩互层岩组、较坚硬岩夹软弱岩岩组、较坚硬岩夹较软弱岩组、较坚硬岩组、坚硬岩组,发现重大滑坡更容易发生在软弱岩组、较硬岩夹较软弱岩组以及坚硬岩组中,而软弱岩夹较软弱岩组、较软弱岩夹较坚硬岩组中无重大滑坡灾害分布。重大滑坡灾害的上述分布特征,反映出地层岩性与重大滑坡灾害之间的复杂关系,一方面岩性软弱,比较容易发生滑坡灾害;另一方面,岩性越坚硬,地形越高陡,也容易发生重大滑坡灾害。  相似文献   

Mountain Commons： Changing Space and Status at Community Levels in the Himalayas   总被引：1，自引：1，他引：0  

Narpat S. JODHA 《山地科学学报》2007,4(2):124-135

This paper deals with the imperatives of nature-society interaction in the Himalayas as seen through CPR (Common Property Resources). It specifically looks at the process and factors that characterize the dynamics of the above interactions, with particular reference to the changing status and governance of CPRs at community levels. The paper puts together the synthesis of observations and inferences of different studies by ICIMOD and others in mountain regions, particularly in different parts of Nepal, India, Bhutan, Bangladesh, China and Pakistan. Rural CPRs (providing sustenance supplies and services) as an important component of a community’s natural resource base, manifest the institutional arrangements evolved by the communities to facilitate their adaptations to nature. The above process can be more clearly illustrated with reference to specific characteristics of mountain areas, called mountain specificities. However, over time, the situation of CPRs in terms of their extent and status, governance and management as well as contributions to community sustenance, has changed. The paper attempts toindicate potential lead lines for searching options for rehabilitation of CPRs, based on a closer under- standing of the factors contributing to their decline.  相似文献   

Guide to Authors： Journal of Mountain Science     

《山地科学学报》2014,(4):I0004-I0009

<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet.  相似文献   

地球上年龄最小的山——喜马拉雅山     

《资源导刊(河南)》2014,(3):3-3

亲爱的读者朋友,提起我国的名山大川,也许您会侃侃而谈：名闻遐迩的五岳山水,充满神秘感的四大佛教名山,风景秀丽奇绝的黄山与庐山……然而,当仔细阅读完漫长的地质历史后,您会发现.  相似文献   

藏东南：高山深谷中的秘境     

雷辉志 《资源导刊(河南)》2014,(4):56-61

藏东南,一片神奇壮丽的土地。喜马拉雅山和念青唐古拉山在此相遇,世界海拔最高的大河一雅鲁藏布江,在南迦巴瓦山脚下切割出地球上最深、最长、最曲折的峡谷。这里是山的海洋,冰川的故乡,高原植物的宝库。  相似文献   

西藏高原湿地掠影之九:东久河     

徐凤翔 《湿地科学与管理》2010,6(1):F0002-F0002,1

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西藏喜马拉雅山地区冰湖溃决的预测模型及其应用研究   总被引：2，自引：1，他引：1  

汪宙峰  张廷山  王成武 《冰川冻土》2016,38(2):388-394

以西藏喜马拉雅山地区的冰湖为研究对象,基于现有的冰湖溃决预测方法,提出了建立冰湖溃决预测方法的关键点,即选取的指标必须能够体现冰湖的动态变化特征.在定量分析的建模过程中应该采用不确定性的数学理论,对于冰湖溃决可能性的等级划分需要进行合理性及实用性验证.选取坝顶宽度、湖水面距坝顶高度与坝高之比、冰湖面积和补给冰川面积为预测指标,通过对西藏喜马拉雅山地区29个冰湖样本进行逻辑回归分析,建立了冰湖溃决的预测模型,并用所有样本进行了交叉验证.结果表明：该模型能够在分类应用中取得较好效果,根据溃决冰湖累积百分数随冰湖溃决可能性大小的变化曲线,将冰湖溃决的可能性划分为四个等级.以黄湖为例,把湖水面距坝顶高度与坝高之比作为冰湖溃决的诱变指标,分析了冰湖溃决可能性大小的变化规律.结合现有的冰湖溃决预测的定性方法,讨论了所建立的冰湖溃决预测模型的优点和缺点.  相似文献   

哈巴雪山以迷人风采冲击着世人的视觉     

李浩 《中国地名》2012,(8):36-37

神话哈巴和玉龙兄弟联手对抗霸占金沙江魔王神奇经亿万年岁月仍保持着远古的纯洁神韵主峰孤傲周围四小山峰拱卫哈巴雪山,位于云南省中甸县东南部,雄踞于世界著名峡谷虎跳峡西岸,最高峰海拔5396米,最低江面海拔仅为1550米。哈巴雪山因第四纪阿尔卑斯—喜马拉雅山构造运动而生,  相似文献