气候变化领域集成服务门户(CCPortal): Ice-Shelf Meltwater Overturning in the Bellingshausen Sea

CCPortal

DOI	10.1029/2020JC016957
	Ice-Shelf Meltwater Overturning in the Bellingshausen Sea
	Ruan X.; Speer K.G.; Thompson A.F.; Schulze Chretien L.M.; Shoosmith D.R.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	Hydrographic data are analyzed for the broad continental shelf of the Bellingshausen Sea, which is host to a number of rapidly thinning ice shelves. The flow of warm Circumpolar Deep Water (CDW) onto the continental shelf is observed in the two major glacially carved troughs, the Belgica and Latady troughs. Using ship-based measurements of potential temperature, salinity, and dissolved oxygen, collected across several coast-to-coast transects over the Bellingshausen shelf in 2007, the velocity and circulation patterns are inferred based on geostrophic balance and further constrained by the tracer and mass budgets. Meltwater was observed at the surface and at intermediate depth toward the western side of the continental shelf, collocated with inferred outflows. The maximum conversion rate from the dense CDW to lighter water masses by mixing with glacial meltwater is estimated to be 0.37 ± 0.1 Sv in both depth and potential density spaces. This diapycnal overturning is comparable to previous estimates made in the neighboring Amundsen Sea, highlighting the overlooked importance of water mass modification and meltwater production associated with glacial melting in the Bellingshausen Sea. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Antarctica; ice-shelf melting; meltwater; overturning
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/186299
作者单位	Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Scientific Computing, Geophysical Fluid Dynamics Institute, Florida State University, Tallahassee, FL, United States; Environmental Science and Engineering, California Institute of Technology, Pasadena, CA, United States; Department of Biology and Marine Science, Marine Science Research Institute, Jacksonville University, Jacksonville, FL, United States; British Antarctic Survey, Cambridge, United Kingdom
推荐引用方式 GB/T 7714	Ruan X.,Speer K.G.,Thompson A.F.,et al. Ice-Shelf Meltwater Overturning in the Bellingshausen Sea[J],2021,126(5).
APA	Ruan X.,Speer K.G.,Thompson A.F.,Schulze Chretien L.M.,&Shoosmith D.R..(2021).Ice-Shelf Meltwater Overturning in the Bellingshausen Sea.Journal of Geophysical Research: Oceans,126(5).
MLA	Ruan X.,et al."Ice-Shelf Meltwater Overturning in the Bellingshausen Sea".Journal of Geophysical Research: Oceans 126.5(2021).