气候变化领域集成服务门户(CCPortal): Observational and Modeling Evidence of Seasonal Trends in Sediment-Derived Material Inputs to the Chukchi Sea

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DOI	10.1029/2019JC016007
	Observational and Modeling Evidence of Seasonal Trends in Sediment-Derived Material Inputs to the Chukchi Sea
	Kipp L.E.; Spall M.A.; Pickart R.S.; Kadko D.C.; Moore W.S.; Dabrowski J.S.; Charette M.A.
发表日期	2020
ISSN	21699275
卷号	125 期号:5
英文摘要	Benthic inputs of nutrients help support primary production in the Chukchi Sea and produce nutrient-rich water masses that ventilate the halocline of the western Arctic Ocean. However, the complex biological and redox cycling of nutrients and trace metals make it difficult to directly monitor their benthic fluxes. In this study, we use radium-228, which is a soluble radionuclide produced in sediments, and a numerical model of an inert, generic sediment-derived tracer to study variability in sediment inputs to the Chukchi Sea. The 228Ra observations and modeling results are in general agreement and provide evidence of strong benthic inputs to the southern Chukchi Sea during the winter, while the northern shelf receives higher concentrations of sediment-sourced materials in the spring and summer due to continued sediment-water exchange as the water mass traverses the shelf. The highest tracer concentrations are observed near the shelfbreak and southeast of Hanna Shoal, a region known for high biological productivity and enhanced benthic biomass. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	benthic flux; Chukchi Sea; GEOTRACES; radium-228
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186883
作者单位	Ocean Frontier Institute, Dalhousie University, Halifax, NS, Canada; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Florida International University, Applied Research Center, Miami, FL, United States; Department of Earth and Ocean Sciences, University of South Carolina, Columbia, SC, United States
推荐引用方式 GB/T 7714	Kipp L.E.,Spall M.A.,Pickart R.S.,et al. Observational and Modeling Evidence of Seasonal Trends in Sediment-Derived Material Inputs to the Chukchi Sea[J],2020,125(5).
APA	Kipp L.E..,Spall M.A..,Pickart R.S..,Kadko D.C..,Moore W.S..,...&Charette M.A..(2020).Observational and Modeling Evidence of Seasonal Trends in Sediment-Derived Material Inputs to the Chukchi Sea.Journal of Geophysical Research: Oceans,125(5).
MLA	Kipp L.E.,et al."Observational and Modeling Evidence of Seasonal Trends in Sediment-Derived Material Inputs to the Chukchi Sea".Journal of Geophysical Research: Oceans 125.5(2020).