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DOI	10.1038/s41467-020-20248-3
	Groundwater discharge impacts marine isotope budgets of Li, Mg, Ca, Sr, and Ba
	Mayfield K.K.; Eisenhauer A.; Santiago Ramos D.P.; Higgins J.A.; Horner T.J.; Auro M.; Magna T.; Moosdorf N.; Charette M.A.; Gonneea M.E.; Brady C.E.; Komar N.; Peucker-Ehrenbrink B.; Paytan A.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Groundwater-derived solute fluxes to the ocean have long been assumed static and subordinate to riverine fluxes, if not neglected entirely, in marine isotope budgets. Here we present concentration and isotope data for Li, Mg, Ca, Sr, and Ba in coastal groundwaters to constrain the importance of groundwater discharge in mediating the magnitude and isotopic composition of terrestrially derived solute fluxes to the ocean. Data were extrapolated globally using three independent volumetric estimates of groundwater discharge to coastal waters, from which we estimate that groundwater-derived solute fluxes represent, at a minimum, 5% of riverine fluxes for Li, Mg, Ca, Sr, and Ba. The isotopic compositions of the groundwater-derived Mg, Ca, and Sr fluxes are distinct from global riverine averages, while Li and Ba fluxes are isotopically indistinguishable from rivers. These differences reflect a strong dependence on coastal lithology that should be considered a priority for parameterization in Earth-system models. © 2021, The Author(s).
语种	英语
scopus关键词	barium; calcium; ground water; lithium; magnesium; river water; strontium; climate modeling; coastal water; concentration (composition); discharge; estuarine front; groundwater; isotopic composition; lithology; marine isotope stage; solute transport; aquifer; Article; astronomy; budget; chemical composition; coastal waters; controlled study; environmental impact; environmental radioactivity; geochemistry; geological time; inductively coupled plasma mass spectrometry; isotope analysis; mass spectrometry; mathematical model; river; salinity; sea; solute; terrestrial surface waters; thermal ionization mass spectrometry; water transport
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251539
作者单位	University of California at Santa Cruz, 1156 High St., Santa Cruz, CA 95064, United States; GEOMAR Helmholtz Center for Ocean Research, Wischhofstrasse 1-3, Kiel, 24148, Germany; Princeton University, Princeton, NJ 08544, United States; Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Czech Geological Survey, Geologická 6, 152 00 Praha 5-Barrandov, Praha, Czech Republic; Leibniz Centre for Tropical Marine Research (ZMT), Fahrenheitstraße 6, Bremen, 28359, Germany; Kiel University (CAU), Christian-Albrechts-Platz 4, Kiel, 24118, Germany; U. S. Geological Survey, 384 Woods Hole Rd, Woods Hole, MA 02543, United States; University of Hawai’i at Manoa, 2500 Campus Rd, Honolulu, HI 96822, United States
推荐引用方式 GB/T 7714	Mayfield K.K.,Eisenhauer A.,Santiago Ramos D.P.,et al. Groundwater discharge impacts marine isotope budgets of Li, Mg, Ca, Sr, and Ba[J],2021,12(1).
APA	Mayfield K.K..,Eisenhauer A..,Santiago Ramos D.P..,Higgins J.A..,Horner T.J..,...&Paytan A..(2021).Groundwater discharge impacts marine isotope budgets of Li, Mg, Ca, Sr, and Ba.Nature Communications,12(1).
MLA	Mayfield K.K.,et al."Groundwater discharge impacts marine isotope budgets of Li, Mg, Ca, Sr, and Ba".Nature Communications 12.1(2021).