Estimation of parameters of the flows forming sediment waves on the western slope of the middle caspian sea |
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| Authors: | Polyakov A. S. Roslyakov A. G. Lobkovskii L. I. Levchenko O. V. Putans V. A. Ambrosimov A. K. Merklin L. R. Anan’ev R. A. Dmitrevskii N. N. Libina N. V. |
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| Affiliation: | (1) Department of Environment, Global Changes and Sustainable Development, ENEA CR Casaccia, Via Anguillarese 301, 00123 Rome, Italy;(2) Department of Environment, Global Changes and Sustainable Development, ENEA CR Portici, Via del Vecchio Macello, 80055 Portici (NA), Italy;(3) U-Series srl, via G. Fanin 48, 40127 Bologna, Italy;(4) Department of Advanced Physics Technologies, ENEA CR Bologna, via dei Colli 16, 40136 Bologna, Italy;(5) Department of Agroindustry and Health Protection, ENEA CR Casaccia, Via Anguillarese 301, 00060 Rome, Italy;(6) via Nizzetti 66, 95030 Tremestieri Etneo (Catania), Italy;(7) Present address: Snamprogetti SpA, via Toniolo, 1, 61032 Fano (PU), Italy;(8) Present address: ENEA CCEI - Bari, via Roberto da Bari 119, 70122 Bari, Italy |
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| Abstract: | By means of mathematical modeling, the parameters of flows forming sedimentary waves on the western slope of the Derbent basin were estimated. The height of these flows depends on the slope steepness and varies from 25 to 170 m to reach its maximum values at gentler slope areas. However, the flow rate is independent of the slope steepness and depends only on the concentration of sediment matter supplied by the flow. At the upper part of the slope (the flow starting), the rate amounts to 0.4–1.4 m/s, being almost halved at the depths where the sedimentary waves are damped. The present rates of near-bottom currents show pronounced seasonal differences, and their values are close to flow rates obtained by numerical modeling. |
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