Complex Oceanological Research during the 44th Cruise
of the Research Vessel Akademik Nikolaj Strakhov
in the Eastern Tropical Atlantic
L. D. Bashirovaa, b, *, V. V. Sivkova, b, L. A. Kuleshovaa, E. P. Ponomarenkoa,
A. G. Matula, I. Yu. Dudkova, b, V. A. Krechika, M. V. Kapustinaa, b, E. S. Bubnovaa,
I. B. Shakhovskoya, and A. A. Kondrashova
aShirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
bImmanuel Kant Baltic Federal University, Kaliningrad, Russia
Correspondence to: *e-mail: bas_leila@mail.ru
Received 3 December, 2019
Abstract—Geological, hydrological, hydrochemical, and biological research has been carried out in the eastern tropical Atlantic. Based on the multibeam echo-sounding and seismic profiling north of the Kane Gap (Sierra Leone Rise), an extensive sedimentary body (contourite fan) has been identified. Data of hydrophysical sounding allows assuming the existence of an overflow of the Antarctic Bottom Water (AABW) through the Kane Gap and its northward penetration. In the sediment cores (Middle Pleistocene to Holocene age), an influence of the AABW is reflected in the alternation of the high and medium carbonate dissolution rates.
Keywords: Atlantic Ocean, contourite drift, Antarctic Bottom Water, Kane Gap, Canary Basin
DOI: 10.1134/S0001437020040025