Estimation of parameters of the flows forming sediment waves on the western slope of the middle caspian sea
Tóm tắt
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.
Tài liệu tham khảo
O. V. Levchenko, V. G. Gainanov, L. R. Merklin, et al., Dokl. Akad. Nauk 411, 663–666 (2006).
L. I. Lobkovskii, L. R. Merklin, S. A. Kovachev, et al., Okeanologiya 47, 795–800 (2007).
A. J. Bowe, W. R. Normark, and D. J. W. Piper, Sedimentology 31, 169–185 (1984).
R. B. Wynn and D. A. V. Stow, Mar. Geol. 192, 7–22 (2002).
R. B. Wunn, P. P. E. Weaver, G. Ercilla, et al., Sedimentology 47, 1181–1197 (2000).