Intra-annual variation of the calcite deposition rate of drip water in Shihua Cave, Beijing, China and its implications for palaeoclimatic reconstructions

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	Intra-annual variation of the calcite deposition rate of drip water in Shihua Cave, Beijing, China and its implications for palaeoclimatic reconstructions
	Cai, BG (Cai, Binggui); Zhu, J (Zhu, Jian); Ban, FM (Ban, Fengmei); Tan, M (Tan, Ming)
刊名	BOREAS
	2011
卷号	40 期号:3 页码:525-535
ISSN号	0300-9483
英文摘要	Monthly in situ monitoring of the calcite deposition rate, drip-water chemistry and surrounding cave environment was carried out at Shihua Cave, Beijing, China, through two hydrological years (from January 2006 to February 2008) to determine the seasonal variability and mechanisms of stalagmite growth in Shihua Cave. Calcite deposition rates exhibit significant intra-annual variation, with the lowest values during the summer monsoonal rainy season (July-August) and peak values from autumn to spring. The temporal change in the calcite deposition rate is negatively correlated with the drip rate, cave-air PCO(2) (CO(2) partial pressure) and Ca concentration, and positively correlated with the pH of the feeding drip water. The seasonal recharge regime of drip water is likely to be the primary control on the drip-water quality and quantity, which, in turn, control the calcite deposition rate in Shihua Cave. During the summer rainy season, periodic and intense rainstorms increase the drip rate and cave-air PCO(2), leading to drip water with a lower pH and saturation index of calcite, thereby reducing the calcite precipitation. It seems that the high cave-air PCO(2) is the dominant control on the calcite deposition rate during the rainy season. Our previous study on the dissolved organic carbon of drip water concluded that the thin luminescent bands in stalagmite laminae from Shihua Cave form during the rainy season. The lower calcite deposition rate during the rainy season further supports this suggestion. The significant intra-seasonal variability of the calcite deposition rate implies that the seasonal bias of delta(18)O of stalagmites should be considered when stalagmite delta(18)O is used as a high-resolution palaeoclimatic archive.
学科主题	地层学与地史学
WOS关键词	STALAGMITE GROWTH ; PALAEO-CLIMATE ; PROXY RECORD ; SPELEOTHEM ; PRECIPITATION ; ATLANTIC ; EVOLUTION ; IRELAND ; CARBON ; ASIA
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000292106800010
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39322]
专题	中国地质调查局
作者单位	Shanxi Univ Finance & Econ, Dept Environm Econ, Taiyuan 030006, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Cai, BG ,Zhu, J ,Ban, FM ,et al. Intra-annual variation of the calcite deposition rate of drip water in Shihua Cave, Beijing, China and its implications for palaeoclimatic reconstructions[J]. BOREAS,2011,40(3):525-535.
APA	Cai, BG ,Zhu, J ,Ban, FM ,&Tan, M .(2011).Intra-annual variation of the calcite deposition rate of drip water in Shihua Cave, Beijing, China and its implications for palaeoclimatic reconstructions.BOREAS,40(3),525-535.
MLA	Cai, BG ,et al."Intra-annual variation of the calcite deposition rate of drip water in Shihua Cave, Beijing, China and its implications for palaeoclimatic reconstructions".BOREAS 40.3(2011):525-535.