Testing the physical oceanographic implications of the suggested sudden Black Sea infill 8400 years ago
Pratt, Lawrence J.
Helfrich, Karl R.
MetadataShow full item record
We apply a shock-capturing numerical model based on the single-layer shallow water equations to an idealized geometry of the Black Sea and the Sea of Marmara in order to test the implications of a suggested sudden Black Sea infill 8400 years ago. The model resolves the two-dimensional flow upstream and downstream of the hydraulic jump provoked by the cascade of water from the Sea of Marmara into the Black Sea, which would occur during a sudden Black Sea infill. The modeled flow downstream of the hydraulic jump in the Black Sea would consist of a jet that is in part constrained by bathymetric contours. Guided by the Bosporus Canyon, the modeled jet reaches depths of up to 2000 m and could explain the origin of the sediment waves observed at this depth. At a late stage of the infill the modeled jet is attached to the coast and might account for the course of a submerged channel at the mouth of the Bosporus. The preservation of continuous barrier-washover-lagoonal fill systems occurring on the Black Sea shelf is, however, not easily reconcilable with the large flows over the southwest Black Sea shelf predicted by the model. Intensified flow in the upstream basin (Sea of Marmara) is restricted to the immediate vicinity of the Bosporus, suggesting that a sudden reconnection need not have disturbed sediments in the wider Sea of Marmara.
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 19 (2004): PA1024, doi:10.1029/2003PA000903.
Suggested CitationPaleoceanography 19 (2004): PA1024
Showing items related by title, author, creator and subject.
Temporal and spatial variability in sedimentation in the Black Sea : cruise report R/V Knorr 134-8, Black Sea Leg 1, April 16-May 7, 1988 Honjo, Susumu; Hay, Bernward J.; Members of the Scientific Shipboard Party (Woods Hole Oceanographic Institution, 1988-10)This document represents the cruise report of the highly successful Leg 1 of the R/V Knorr cruise to the Black Sea (Cruise 134-8) as a joint Turkish-American Oceanographic Expedition (Izmir to Istanbul, April 16 to May ...
Hydrology in the Sea of Marmara during the last 23 ka : implications for timing of Black Sea connections and sapropel deposition Vidal, L.; Menot, Guillemette; Joly, C.; Bruneton, H.; Rostek, F.; Cagatay, M. Namik; Major, Candace O.; Bard, Edouard (American Geophysical Union, 2010-02-06)Sediments deposited under lacustrine and marine conditions in the Sea of Marmara hold a Late Quaternary record for water exchange between the Black Sea and the Mediterranean Sea. Here we report a multiproxy data set based ...
Coppola, Alysha I.; Wiedemeier, Daniel B.; Galy, Valier; Haghipour, Negar; Hanke, Ulrich; Nascimento, Gabriela S.; Usman, Muhammed; Blattmann, Thomas M.; Reisser, Moritz; Freymond, Chantal V.; Zhao, Meixun; Voss, Britta M.; Wacker, Lukas; Schefuß, Enno; Peucker-Ehrenbrink, Bernhard; Abiven, Samuel; Schmidt, Michael W. I.; Eglinton, Timothy I. (2018-05)Wildfires and incomplete combustion of fossil fuel produce large amounts of black carbon. Black carbon production and transport are essential components of the carbon cycle. Constraining estimates of black carbon exported ...