气候变化领域集成服务门户(CCPortal): Hydroclimatic Controls on Salt Fluxes and Halite Deposition in the Dead Sea and the Shaping of “Salt Giants”

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DOI	10.1029/2020GL090836
	Hydroclimatic Controls on Salt Fluxes and Halite Deposition in the Dead Sea and the Shaping of “Salt Giants”
	Sirota I.; Ouillon R.; Mor Z.; Meiburg E.; Enzel Y.; Arnon A.; Lensky N.G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	As the only deep hypersaline, halite-precipitating lake on Earth today, the Dead Sea is the single modern analog for investigating the mechanisms by which large-scale and thick salt deposits, known as “salt giants”, have accreted in the geological record. We directly measure the hydroclimatic forcing and the physical limnologic processes leading to halite sedimentation, the vertical thermohaline structure, and salt fluxes in the Dead Sea. We demonstrate that changes in these forcing lead to strong seasonal and regional variations in the stratification stability ratio, triggering corresponding spatiotemporal variations in thermohaline staircase formation and diapycnal salt flux, and finally control the thickness of the halite layer deposited. The observed staircase formation is consistent with the mean-field γ instability, causing layering in double-diffusive convection. We show that double diffusion and thermohaline staircase formation drive the spatial variability of halite deposition in hypersaline water bodies, underlying and shaping “salt giants” basin architecture. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Deposition; Heat convection; Sodium chloride; Stairs; Double diffusion; Double-diffusive convection; Hypersaline waters; Regional variation; Spatial variability; Spatio-temporal variation; Thermohaline staircase; Thermohaline structures; Chloride minerals; atmospheric convection; atmospheric forcing; double diffusion; halite; hydrometeorology; limnology; precipitation (chemistry); salinity; stratification; thermohaline circulation; Dead Sea
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/169407
作者单位	The Fredy and Nadine Herrmann Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel; Geological Survey of Israel, Jerusalem, Israel; Department of Mechanical Engineering, University of California, Santa Barbara, CA, United States
推荐引用方式 GB/T 7714	Sirota I.,Ouillon R.,Mor Z.,等. Hydroclimatic Controls on Salt Fluxes and Halite Deposition in the Dead Sea and the Shaping of “Salt Giants”[J],2020,47(22).
APA	Sirota I..,Ouillon R..,Mor Z..,Meiburg E..,Enzel Y..,...&Lensky N.G..(2020).Hydroclimatic Controls on Salt Fluxes and Halite Deposition in the Dead Sea and the Shaping of “Salt Giants”.Geophysical Research Letters,47(22).
MLA	Sirota I.,et al."Hydroclimatic Controls on Salt Fluxes and Halite Deposition in the Dead Sea and the Shaping of “Salt Giants”".Geophysical Research Letters 47.22(2020).