Mountain glaciation in Japan and Taiwan at the global last glacial maximum
Mountain glaciation in Japan and Taiwan at the global last glacial maximum
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DOI：
10.1016/j.quaint.2005.02.007
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发表时间：
2005-09-01
影响因子：
2.2
通讯作者：
Liu, DL
中科院分区：
文献类型：
--
作者：
Ono, YG;Aoki, T;Liu, DL
日本和台湾的山地冰川在 MIS 3/4 期间达到最大，而全球末次盛冰期 (LGM) 的冰川范围则更为有限。本文提供了来自日本四个地区和台湾两个地区的数据，这些地区的末碛石地形和年代位置已得到明确确定，年代学由放射性碳、AMS 和 Be-10 宇宙成因日期控制。全球末次盛宴的平衡线高度（ELA）在北海道日高山脉约为1500米，日本北阿尔卑斯山为2500 m，日本中部阿尔卑斯山为2700 m，日本南阿尔卑斯山为2800 m，台湾北部为3300 m，台湾中部为3500 m。 ELA 主要通过最大流量、累积消融面积比（AAR）和冰川趾端壁比（THAR）方法来确定。 ELA 的等值线模式表明降水控制对该地区冰川的发育产生了强烈影响。日本全球末次盛冰期的 ELA 气压为 1100-1300 英寸，但日本北部阿尔卑斯山最北端（仅 400 英寸）除外，那里由于降雪量大，目前假设的 ELA 极低。在不考虑隆起的情况下，全球末次盛冰期台湾的 ELA 凹陷估计约为 1100-1300 m。 (c) 2005 Elsevier Ltd 和 INQUA。版权所有。
Montane glaciation in Japan and Taiwan was maximal in MIS 3/4 and glacier extent at the global Last Glacial Maximum (LGM) was much more limited. Data from four areas in Japan and two in Taiwan, where the topographical and chronological positions of the terminal moraines are well determined and the chronology is controlled by radiocarbon, AMS and Be-10 cosmogenic dates, are presented in this paper. Equilibrium line altitudes (ELAs) at global LGM are around 1500 in in the Hidaka Range, Hokkaido, 2500 m in the Northern Japanese Alps, 2700 m in the Central Japanese Alps, 2800 m in the Southern Japanese Alps in Japan, and 3300 m in northern Taiwan and 3500 m in central Taiwan. The ELAs are mostly determined by maximum discharge, accumulation-ablation area ratio (AAR) and glacier toe-and-headwall ratio (THAR) methods. The pattern of contours of ELAs indicates a strong influence of precipitation control on glacier development in this region. The ELA depression at global LGM in Japan was 1100-1300 in except in the northernmost part of the Northern Japanese Alps (only 400 in), where the present hypothetical ELA is extraordinarily low because of abundant snowfall. The ELA depression at global LGM in Taiwan is estimated at about 1100-1300 m without consideration of uplift. (c) 2005 Elsevier Ltd and INQUA. All rights reserved.