부산대학교 도서관

Streams convey coarse-clastic sediments towards coasts, where interactions with deltaic and coastal processes determine their resultant sedimentology and geomorphology. Extracting hydroclimatic signals from such environments is a desired goal, and therefore studies commonly rely on interpreting available paleoclimatic proxy data, but the direct linking of depositional and geomorphic processes with the hydroclimate remains obscure. This is a consequence of the challenge of linking processes that are often studied separately and span across large spatial and temporal scales, including synoptic-scale hydroclimatic forcing, streamflows, water body hydrodynamics, fluvial and coastal sediment transport, and sedimentation. Here, we explore this chain of connected processes in the unique setting of the Dead Sea basin, where present-day hydroclimatology is closely tied with geomorphic evolution and sediment transport of streams and coasts that rapidly respond to lake-level fall. We use a 5-year (2018-2022) rich dataset of (i) high-resolution synoptic-scale circulation patterns, (ii) continuous wind-wave and rain-flood records, and (iii) storm-scale fluvial and coastal sediment transport of 'smart' and marked boulders. We show the significance of Mediterranean cyclones in the concurrent activation of fluvial (floods) and coastal (wind waves) sediment conveyors. These synoptic-scale patterns drive the westerlies necessary for (i) delivering the moisture across the Judean desert, which is transformed into floods, and at the same time, (ii) the coeval, topographically funneled winds that turn into surface southerlies (10 m s.sup.-1) along the Dead Sea rift valley. During winter, these mesoscale southerlies generate 10-30 high-amplitude, northward-propagating storm waves, with
Byline: Haggai Eyal, Moshe Armon, Yehouda Enzel, Nadav G. Lensky To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: https://esurf.copernicus.org/articles/11/547/2023/esurf-11-547-2023.html, or to download [...]