首页|Low-latitude hydroclimate changes related to paleomagnetic variations during the Holocene in coastal southern China

Low-latitude hydroclimate changes related to paleomagnetic variations during the Holocene in coastal southern China

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The variations in precipitation have displayed a complex pattern in different regions since the mid-to-late-Holocene.Cloud formation processes may have a significant impact on precipitation,especially during the tropical marine processes and summer monsoon which convey abundant water vapor to coastal southern China and inland areas.Here,we use two 7500 year sedimentary records from the Pearl River Delta and the closed Maar Lake,respectively,in coastal southern China to reconstruct the mid-to-late-Holocene humidity variability and explore its possible relationship with cloud cover modulated by the Earth's magnetic fields(EMF).Our proxy records document an apparent increase in wetness in coastal southern China between 3.0 and 1.8 kyr BP.This apparent increase in humidity appears to be consistent with the lower virtual axial dipole moments and,in turn,with a lower EMF.This correlation suggests that the EMF might have been superimposed on the weakened monsoon to regulate the mid-to-late-Holocene hydroclimate in coastal southern China through the medium of galactic cosmic rays,aerosols,and cloud cover.However,further investigations are needed to verify this interaction.

hydroclimate variationsEarth's magnetic fieldcoastal southern Chinathe Holocene epoch

Tingwei ZHANG、Xiaoqiang YANG、Jian YIN、Qiong CHEN、Jianfang HU、Lu WANG、Mengshan JU、Qiangqiang WANG

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School of Earth Science and Engineering/Guangdong,Provincial Key Laboratory of Geodynamics and Geohazards/Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Sun Yat-sen University,Guangzhou 510275,China

Institute of Cultural Heritage,Shandong University,Qingdao 266237,China

State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China

College of Urban and Environmental Sciences,Peking University,Beijing 100871,China

Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China

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projects of National Second Expedition to the Tibetan PlateauGuangdong Province Introduced Innovative R&D Team of Geological Processes and Natural Disasters around the South China Seaprojects of National Natural Science Foundation of Chinaprojects of National Natural Science Foundation of Chinaprojects of National Natural Science Foundation of ChinaNatural Science Foundation of Guangdong Province

2019QZKK07072016ZT06N3314187221741672162419040682018B030311064

2024

10.1007/s11707-022-1009-y

地球科学前沿
高等教育出版社

地球科学前沿

CSTPCD
影响因子：0.585
ISSN：2095-0195
年,卷(期)：2024.18(2)