干旱区生态环境知识资源中心(Arid): A high-resolution record of Mid- to Late-Holocene environmental changes from a land-locked lake in Schirmacher Oasis, East Antarctica

Arid

DOI	10.1177/09596836241236347
	A high-resolution record of Mid- to Late-Holocene environmental changes from a land-locked lake in Schirmacher Oasis, East Antarctica
	Joju, G. S.; Warrier, Anish Kumar; Mahesh, B. S.; Sali, A. S. Yamuna; Noronha-D'Mello, Cheryl A.; Balakrishna, K.; Mohan, Rahul
通讯作者	Warrier, AK
来源期刊	HOLOCENE
ISSN	0959-6836
EISSN	1477-0911
出版年	2024
卷号	34 期号:7 页码:881-894
英文摘要	We present a high-resolution record of environmental changes during the Mid-Late Holocene obtained from a lake sediment core covering the past 4.87 cal kyr BP in the Schirmacher Oasis, East Antarctica. The magnetic signal of Lake L6 was found to be primarily controlled by catchment-derived ferrimagnetic minerals. The period between 4.87 and 3.35 cal kyr BP is marked by several episodes of cold and warm conditions. Warm and wet conditions prevailed in the region from 3.35 to 2.43 cal kyr BP. Magnetic susceptibility values remained generally low indicating the pedogenic formation of fine magnetic grains. The high values of the chemical weathering indices reflected the warm and wet conditions conducive to chemical weathering. A transition to cold and dry conditions was observed at around 2.43 cal kyr BP, representing the Neoglacial cooling, with high values of magnetic concentration-dependent parameters. Following the Neoglacial period, a return to warm and wet conditions was observed at 1.63 cal kyr BP, coeval with the Medieval Climate Anomaly. Our record shows a Late-Holocene cooling marked by a sudden increase in magnetic susceptibility values, which could represent the Little Ice Age, followed by a shift to warmer conditions near the core top.
英文关键词	chemical weathering East Antarctica high resolution lake sediments magnetic susceptibility Mid-Late Holocene
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001185358300001
WOS关键词	ICE-AGE CLIMATE ; MAGNETIC-PROPERTIES ; BACTERIAL MAGNETITE ; SEDIMENTS ; PENINSULA ; CORE ; SEA ; GEOCHEMISTRY ; VARIABILITY ; COMPONENTS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404051
推荐引用方式 GB/T 7714	Joju, G. S.,Warrier, Anish Kumar,Mahesh, B. S.,et al. A high-resolution record of Mid- to Late-Holocene environmental changes from a land-locked lake in Schirmacher Oasis, East Antarctica[J],2024,34(7):881-894.
APA	Joju, G. S..,Warrier, Anish Kumar.,Mahesh, B. S..,Sali, A. S. Yamuna.,Noronha-D'Mello, Cheryl A..,...&Mohan, Rahul.(2024).A high-resolution record of Mid- to Late-Holocene environmental changes from a land-locked lake in Schirmacher Oasis, East Antarctica.HOLOCENE,34(7),881-894.
MLA	Joju, G. S.,et al."A high-resolution record of Mid- to Late-Holocene environmental changes from a land-locked lake in Schirmacher Oasis, East Antarctica".HOLOCENE 34.7(2024):881-894.