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New publications of Ido Sirota and co-authors in 'GRL' and 'Sedimentology'

November 2, 2020
מחשוף מלח מודרני בעין גדי

Hydroclimatic controls on salt fluxes and halite deposition in the Dead Sea and the shaping of 'Salt Giants'

Ido Sirota, Raphael Ouillon, Ziv Mor, Eckart Meiburg, Yehouda Enzel, Ali Arnon and Nadav G. Lensky

Published in 'Geophysical Research Letters'

This study explores the hydroclimatic controls over seasonal (during summer) and spatial (from north to south) variations in salt fluxes and halite deposition in the Dead Sea. We suggest that southward surface water salinity increases, farther from the northern freshwater inflows (Jordan River, Ein Fesh'ha and Kane-Samar springs) reduces water column stratification stability and enhances vertical salt fluxes (from the upper layer to the lower layer). Halite deposition in the deep lakefloor enhances accordingly. The increase in vertical salt fluxes, originated from double diffusive mixing is reflected by the shape of temperature depth profiles; region with intensive double diffusive mixing displays thermohaline staircases, while region with weak double diffusive mixing displays rounded profiles.

To the Full article

 

Sedimentology and stratigraphy of a modern halite sequence formed under Dead Sea level fall

Ido Sirota, Yehouda Enzel, Ziv Mor, Liran Ben Moshe, Haggai Eyal, Tim K. Lowenstein and Nadav G. Lensky

 Published in 'Sedimentology'

This study explores the sedimentology and stratigraphy of a modern halite sequence (post 1980) that was deposited under Dead Sea level fall in order to relate directly, sedimentologic characteristics of halite deposits with the environmental forcing. We combined detailed sedimentologic analysis with measured environmental records from the past four decades (lake level, rain record, limnological conditions in the Dead Sea and floods records), and show water depth indicators and the expression of floods along the halite sequence. These observations assist in recognizing water level trends and hydroclimatic events in the geological record and paleolimnology of past hypersaline environments.

To the Full article