气候变化领域集成服务门户(CCPortal): Submarine Groundwater and Vent Discharge in a Volcanic Area Associated With Coastal Acidification

CCPortal

DOI	10.1029/2019GL085730
	Submarine Groundwater and Vent Discharge in a Volcanic Area Associated With Coastal Acidification
	Cardenas M.B.; Rodolfo R.S.; Lapus M.R.; Cabria H.B.; Fullon J.; Gojunco G.R.; Breecker D.O.; Cantarero D.M.; Evaristo J.; Siringan F.P.; Zhang T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	We investigated submarine groundwater discharge (SGD) in a volcanic coastal area that hosts the world's most biodiverse reefs. Measurements of 222Rn activity in coastal seawater, a tracer for groundwater, indicated prevalent SGD. In areas where seawater 222Rn activity was generally higher, we discovered hydrothermal springs emitting acidic waters (pH ~5.4–6.0) and venting magmatic CO2 that brought local pCO2 levels up to 95,000 ppm. The collection of vents raised CO2 and lowered pH over 1–2 km of coastline. The hydrogen and oxygen isotope compositions of water and chloride concentration revealed that the springs discharge recirculated seawater mixed variably with terrestrial groundwater. Shallower springs and pore water have a higher proportion of terrestrial groundwater than deeper springs, which emit mostly recirculated seawater. This suggests that different SGD mechanisms are present. The SGD could be contributing to the evolution and function of the biodiverse ecosystem, but it also represents myriad pathways for contamination. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Acidification; Carbon dioxide; Chlorine compounds; Groundwater; Hot springs; Seawater; Submarines; Volcanoes; Chloride concentrations; Coastal seawater; Hydrothermal vent; Measurements of; Oxygen isotope composition; Submarine groundwater discharge; Submarine groundwaters; Vent discharge; Discharge (fluid mechanics); acidification; carbon dioxide; discharge; groundwater flow; hydrothermal vent; oxygen isotope; pH; porewater; shallow water; volcanic landform
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170867
作者单位	Department of Geological Sciences, The University of Texas at Austin, Austin, TX, United States; Agricultural Sustainability Initiatives for Nature, Inc., Quezon City, Philippines; Department of Environmental Science, Ateneo de Manila University, Quezon City, Philippines; Planet Dive ResortBatangas, Philippines; Scuba Academy Manila, Makati, Philippines; Marine Science Institute, University of the Philippines-Diliman, Quezon City, Philippines; Copernicus Institute of Sustainable Development, Utrecht University, Utrecht, Netherlands; Bureau of Economic Geology, The University of Texas at Austin, Austin, TX, United States
推荐引用方式 GB/T 7714	Cardenas M.B.,Rodolfo R.S.,Lapus M.R.,et al. Submarine Groundwater and Vent Discharge in a Volcanic Area Associated With Coastal Acidification[J],2020,47(1).
APA	Cardenas M.B..,Rodolfo R.S..,Lapus M.R..,Cabria H.B..,Fullon J..,...&Zhang T..(2020).Submarine Groundwater and Vent Discharge in a Volcanic Area Associated With Coastal Acidification.Geophysical Research Letters,47(1).
MLA	Cardenas M.B.,et al."Submarine Groundwater and Vent Discharge in a Volcanic Area Associated With Coastal Acidification".Geophysical Research Letters 47.1(2020).