4aAO16. Relationship between acoustic backscattering field and suspended matter distribution in the Kara Sea and Ob and Yenisei estuaries.
Session: Thursday Morning, December 5
Time: 12:00
Author: Michail E. Vinodradov
Location: Inst. of Appl. Phys., 46 Ulyanov St., Nizhny Novgorod, 603600, Russia
Author: Vladimir P. Shevchenko
Location: Inst. of Appl. Phys., 46 Ulyanov St., Nizhny Novgorod, 603600, Russia
Author: Sergey L. Muyakshin
Location: Inst. of Appl. Phys., 46 Ulyanov St., Nizhny Novgorod, 603600, Russia
Author: Vladimir N. Nuchlov
Location: Inst. of Appl. Phys., 46 Ulyanov St., Nizhny Novgorod, 603600, Russia
Author: Alexander P. Lisitzin
Location: Inst. of Oceanology, Moscow, 117218, Russia
Author: Ludmila P. Lebedeva
Location: Inst. of Oceanology, Moscow, 117218, Russia
Abstract:
During the 49th cruise of the RV DMITRY MENDELEEV, remote ADCP
measurements of ultrasonic backscattering coefficients (BC) at 215 kHz were made
together with biological sampling and sedimentological station deployment. It
was found that the structure of the BC field on the Ob--Yenisei Delta is closely
connected with the processes of fast sedimentation in the region of fresh-water
influence. The BC field in the west basin of the Kara Sea is formed on the
background of weakly sound scattering Arctic water under the influence of the
intrinsic mezoplankton distribution, cost erosion, tidal mixing processes, and
refreshed water transport from the Ob--Yenisei Delta. The present study
demonstrates that ADCP is a very powerful tool for investigation of suspended
matter distribution and transport in the marginal seas with river plumes.
ASA 132nd meeting - Hawaii, December 1996