| 东亚沿海山地末次冰期冰川与环境 |
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| 引用本文： | 张威,闫玲,崔之久,杨建强.东亚沿海山地末次冰期冰川与环境[J].地理学报,2009,64(1). |
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| 作者姓名： | 张威 闫玲 崔之久 杨建强 |
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| 作者单位： | 1. 辽宁师范大学城市与环境学院,大连,116029
2. 北京大学城市与环境学院,北京,100871 |
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| 摘 要： | 对东亚沿海山地末次冰期冰川发育的气候条件、构造背景、冰进时序、发育规模等研究表明,台湾山地保存着3期冰川作用遗迹,冰川的最大前进规模发生在MIS3b阶段,其规模大于MIS2阶段;日本山地冰期系列齐全,包含了末次冰期的早(MIS4)、中(MIS3)、晚(MIS2)3个阶段的冰进,其规模是MIS4/3阶段大于MIS2阶段;而长白山存在2期冰川作用的遗迹,即末次冰盛期(MIS2)和晚冰期.在相似的冬雨(雪)型季风影响区,冰川发育的时序与规模也有一定不同,反映出在大气候背景下的区域性差异,在东亚季风影响范围内,末次冰期的环流变化在各地也很不一致.最新推算的现代理论雪线自北(日本)向南(台湾)依次递增,范围是2750～4245 m,除日本北部的高纬地区雪线降低值400 m之外,末次冰盛期(LGM)的雪线降低值在800～1300 m之间,平均值1000 m左右.东亚沿海山地冰川发育与新构造运动密切相关,更新世山体的快速抬升为冰川发育的内因,如台湾山地在末次冰期的MIS3b阶段,山体的抬升量约为250 m,对山体的高度和雪线变化有很大影响.
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| 关 键 词： | 东亚山地 末次冰期 冰川环境 构造背景 |
Glacial Environment during the Last Glacial Cycle in the Mountains of East Asia |
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| ZHANG Wei,YAN Ling,CUI Zhijiu,YANG Jianqiang.Glacial Environment during the Last Glacial Cycle in the Mountains of East Asia[J].Acta Geographica Sinica,2009,64(1). |
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| Authors: | ZHANG Wei YAN Ling CUI Zhijiu YANG Jianqiang |
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| Institution: | 1. College of Urban and Environmental Sciences;Liaoning Normal University;Dalian 116029;China;2. Department of Geography;Peking University;Beijing 100871;China |
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| Abstract: | Evidence from all over the world shows that the timing of mountain glacier maxima advances varied widely. Studies on the climatic conditions, tectonic background, glacial sequences and glacier extents show that they are different from region to region. Three glacial remains are preserved in Taiwanese mountains including the middle/early stage, last glacial maximum and late-glacial stage glaciers. The glacier extent in MIS3b is larger than MIS2. The glacier geomorphology and landforms are well perserved in J... |
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| Keywords: | last glacial cycle glacier environment tectonic uplift glacial extent East Asia |
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