干旱区生态环境知识资源中心(Arid): Response of drip water Mg/Ca and Sr/Ca variations in ventilated caves to hydroclimate

Arid

DOI	10.1016/j.scitotenv.2023.162626
	Response of drip water Mg/Ca and Sr/Ca variations in ventilated caves to hydroclimate
	Lyu, Yina; Luo, Weijun; Wang, Yanwei; Zeng, Guangneng; Chen, Jia; Wang, Shijie
通讯作者	Luo, WJ
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	874
英文摘要	Mg/Ca and Sr/Ca in speleothems which record valuable information regarding past variations of precipitation and cave air pCO2 are promising proxies because the degrees of water-rock interaction (WRI) and prior calcite precipitation (PCP) are directly and indirectly related to these changes. However, the controls on Mg/Ca and Sr/Ca can be complex, and most studies ignored the combined effects of rainfall and cave air pCO2. Moreover, knowledge of the influence of seasonal rainfall and cave air pCO2 on seasonal fluctuations in drip water Mg/Ca and Sr/Ca are limited for caves with different regions and ventilation types. Drip water Mg/Ca and Sr/Ca were monitored for five years at Shawan Cave. The results indicate that the irregular seasonal oscillation in drip water Mg/Ca and Sr/Ca is controlled by inverse -phase seasonal changes between rainfall and cave air pCO2. The rainfall amount may be the primary controlling factor of the interannual variation in drip water Mg/Ca, whereas the interannual variation in drip water Sr/Ca is most likely controlled by cave air pCO2. Furthermore, we compared drip water Mg/Ca and Sr/Ca of caves in different regions to fully understand how drip water Mg/Ca and Sr/Ca respond to hydroclimate changes. The drip water element/Ca, for seasonal ventilation caves with a fairly narrow range of cave air pCO2 respond well to the local hydroclimate associated with rainfall variation. If the range of cave air pCO2 is considerably large, the element/Ca in seasonal ventilation caves of subtropical humid regions may not reflect hydroclimate and that of Mediterranean and semi-arid regions may be primarily controlled by cave air pCO2. The element/Ca in the low year-round pCO2 caves could reflect the hydroclimate associated with surface temperature. Therefore, observations of drip water monitoring and comparative analysis can provide a reference for the explanation of speleothems element/Ca ratios from seasonally ventilated caves worldwide.
英文关键词	Cave drip water Mg Ca ratio Sr Cave ventilation Hydroclimate
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000962274600001
WOS关键词	TRACE-ELEMENT ; CALCITE PRECIPITATION ; HIGH-RESOLUTION ; PALEOCLIMATE PROXIES ; DRIPWATER CHEMISTRY ; SPATIAL VARIABILITY ; SPELEOTHEM CALCITE ; ISOTOPE VARIATIONS ; MODERN CALIBRATION ; STABLE-ISOTOPES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398516
推荐引用方式 GB/T 7714	Lyu, Yina,Luo, Weijun,Wang, Yanwei,et al. Response of drip water Mg/Ca and Sr/Ca variations in ventilated caves to hydroclimate[J],2023,874.
APA	Lyu, Yina,Luo, Weijun,Wang, Yanwei,Zeng, Guangneng,Chen, Jia,&Wang, Shijie.(2023).Response of drip water Mg/Ca and Sr/Ca variations in ventilated caves to hydroclimate.SCIENCE OF THE TOTAL ENVIRONMENT,874.
MLA	Lyu, Yina,et al."Response of drip water Mg/Ca and Sr/Ca variations in ventilated caves to hydroclimate".SCIENCE OF THE TOTAL ENVIRONMENT 874(2023).