期刊
GEOLOGY
卷 33, 期 10, 页码 813-816出版社
GEOLOGICAL SOC AMER, INC
DOI: 10.1130/G21498.1
关键词
Bolling-Allerod; Indian monsoon; stalagmite; oxygen isotopes; stable isotope
类别
We have generated a high-resolution (< 20 yr) Th-230-dated stalagmite oxygen isotope record from Timta Cave in the western Himalaya in India that documents Southwest Indian summer monsoon (ISM) precipitation variations during the Bolling-Allerod interstadial from 15.2 to 11.7 ka. Compared with the glacial and Younger Dryas, ISM precipitation was enhanced during the Bolling-Allerod. ISM precipitation was apparently coupled to variations in the East Asian monsoon and North Atlantic climate on millennial and multicentenniall time scales during the deglaciation. Analyses of a high growth rate interval (< 2.5 yr resolution) encompassing the late Bolling-early Allerod suggest that multidecadal monsoon variability was an important aspect of ISM behavior at that time. The frequency spectrum of ISM precipitation during this time interval is similar to that of the Delta C-14 record and other ISM precipitation records during the latest Holocene. This raises the hypothesis that multidecadal climate dynamics during the late Bolling-early Allerod may have been similar to those that operated during the last several millennia, even though the boundary conditions of these two time intervals were very different.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据