Seminar "Fluid Mechanics of the Dead Sea" by Prof. Eckart Meiburg

[Speaker]

Eckart Meiburg
Distinguished Professor
Department of Mechanical Engineering
Director, Center for Interdisciplinary Research in Fluids
University of California at Santa Barbara

[Abstract]

The environmental setting of the Dead Sea combines several aspects whose interplay creates flow phenomena and transport processes that cannot be observed anywhere else on Earth. As a terminal lake with a rapidly declining surface level, the salinity of the Dead Sea is close to saturation, so that the buoyancy-driven flows common in lakes are coupled to precipitation and dissolution, and large amounts of salt are being deposited year-round. The Dead Sea is the only hypersaline lake deep enough to form a thermohaline stratification during summer, which gives rise to descending supersaturated salt fingers that precipitate halite particles. In contrast, during winter the entire supersaturated, well-mixed water column produces halite. The rapid lake level decline of O(1m/yr) exposes vast areas of newly formed beach every year, which exhibits deep incisions from streams. Taken together, these phenomena provide insight into the enigmatic ‘salt giants’ observed in the Earth’s geological record, and offer lessons regarding the stability, erosion and protection of arid coastlines under sea level change.

[Zoom link]

https://oist.zoom.us/j/98017968698?pwd=DX5FzbCbYJWi2SAMRRJx9sRwo5nEgr.1

Meeting ID: 980 1796 8698
Passcode: 319224