摘要
全新世(11.7 ka BP)作为最年轻的地质年代,其气候变化相对晚更新世冰期稳定,但仍存在千百年尺度的气候波动。造成这些气候波动的可能有多种原因,但至今还没有统一的认识。这一时期的气候变化与人类发展有密切的关系,因此其短尺度的气候变化越来越受到学界的关注,已经开展了大量的研究。通过对文献资料分析,综述了全新世千百年尺度的气候突变的原因。全新世早期温度普遍升高主要与太阳活动变化有关,期间冰盖消融与海洋环流作用引起百年尺度的气候事件。全新世中期气温最高,但也发现多次干冷气候事件,主要为冰川活动导致。全新世晚期温度降低,主要是以火山活动导致的气候变冷。其他因素如地球轨道参数、潮汐作用、冰川作用、海洋环流等在全新世各个时期对气候造成影响。
Objectives:Holocene(11.7 ka BP)is the name for the most recent interval of Earth’s history and includes the present day.Its climate is stabler than the last glacial,but there are still abrupt climate changes,including centennial and millennial-scale climate fluctuations.What caused these changes have no consensus,and various mechanisms have been proposed.Moreover,the abrupt climate fluctuation during Holocene might be closely related to human civilization development.Therefore,the abrupt climate change has received more and more attention.Results and Conclusion:Here we review the causes of abrupt climate changes at the centennial and millennial scale in the Holocene.The high temperature in the early Holocene was mainly associated with solar activity,the melting of ice caps and ocean circulation.The highest temperatures were observed in the middle Holocene,but several dry and cold climate events were also found,mainly due to glacial activity.The volcanic activity was the main factor causing the cooling climate in the late Holocene.Other factors such as orbital parameters,tidal action,glacial action,and ocean circulation influenced the climate during various periods of the Holocene.
作者
何文雨
旺罗
HE Wenyu;WANG Luo(Division of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,100049)
出处
《地质论评》
CAS
CSCD
北大核心
2023年第6期2308-2324,共17页
Geological Review
基金
国家自然科学基金资助项目(编号:4227011679)的成果。
关键词
全新世
气候突变
驱动机制
千百年尺度
Holocene
abrupt climate change
climate forcings
millennial scale variability
