globalchange  > 气候变化与战略
DOI: 10.1029/2017GB005839
论文题名:
Replacement Times of a Spectrum of Elements in the North Atlantic Based on Thorium Supply
作者: Hayes C.T.; Anderson R.F.; Cheng H.; Conway T.M.; Edwards R.L.; Fleisher M.Q.; Ho P.; Huang K.-F.; John S.G.; Landing W.M.; Little S.H.; Lu Y.; Morton P.L.; Moran S.B.; Robinson L.F.; Shelley R.U.; Shiller A.M.; Zheng X.-Y.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2018
卷: 32, 期:9
语种: 英语
英文关键词: carbon cycle ; fractionation ; geochemistry ; hydrothermal vent ; nutrient availability ; replacement ; residence time ; solubility ; thorium isotope ; trace element ; Atlantic Ocean ; Atlantic Ocean (North)
学科: geochemistry ; GEOTRACES ; residence times ; trace metals
中文摘要: The measurable supply of 232Th to the ocean can be used to derive the supply of other elements, which is more difficult to quantify directly. The measured inventory of an element divided by the derived supply yields a replacement time estimate, which in special circumstances is related to a residence time. As a proof of concept, Th-based supply rates imply a range in the replacement times of the rare earth elements in the North Atlantic that is consistent with the chemical reactivity of rare earth elements related to their ionic charge density. Similar estimates of replacement times for the bioactive trace elements (Fe, Mn, Zn, Cd, Cu, and Co), ranging from <5 years to >50,000 years, demonstrate the broad range of elemental reactivity in the ocean. Here we discuss how variations in source composition, fractional solubility ratios, or noncontinental sources, such as hydrothermal vents, lead to uncertainties in Th-based replacement time estimates. We show that the constraints on oceanic replacement time provided by the Th-based calculations are broadly applicable in predicting how elements are distributed in the ocean and for some elements, such as Fe, may inform us on how the carbon cycle may be impacted by trace element supply and removal. ©2018. American Geophysical Union. All Rights Reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160204
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: School of Ocean Science and Engineering, University of Southern Mississippi, Stennis Space Center, MS, United States; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China; Department of Earth Sciences, University of Minnesota, Minneapolis, MN, United States; College of Marine Science and School of Geosciences, University of South Florida, St. Petersburg, FL, United States; Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan; Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, United States; Department of Earth Science and Engineering, Royal School of Mines, Imperial College London, London, United Kingdom; Earth Observatory of Singapore, Singapore; College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, AK, United States; Department of Earth Sciences, University of Bristol, Bristol, United Kingdom; Department of Geoscience, University of Wisconsin, Madison, WI, United States

Recommended Citation:
Hayes C.T.,Anderson R.F.,Cheng H.,et al. Replacement Times of a Spectrum of Elements in the North Atlantic Based on Thorium Supply[J]. Global Biogeochemical Cycles,2018-01-01,32(9)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Hayes C.T.]'s Articles
[Anderson R.F.]'s Articles
[Cheng H.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Hayes C.T.]'s Articles
[Anderson R.F.]'s Articles
[Cheng H.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Hayes C.T.]‘s Articles
[Anderson R.F.]‘s Articles
[Cheng H.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.