Intermediate and deep currents of the Black Sea, obtained from autonomous profiling floats

Date

2006-01-01

Author

Korotaev, G.
Oguz, T.
Riser, S.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

151
views

0
downloads

Float trajectories observed at three depths (200, 750 and 1550m) in the Black Sea during a 1.5-yr period offer new insights on the circulation below the permanent pycnocline. The float observations for the first time provided direct, quantitative evidence for strong currents and a well-organized flow structure at intermediate and deep layers, in contrast to prior ideas of a rather sluggish deep circulation of the Black Sea. The magnitudes of intermediate and deep currents are typically about 5-10% of the surface currents, reaching as much as 5cms(-1) at 1550m, adjacent to the steep topographic slope on the periphery. The combination of float and sea-level height altimeter data suggests that a well-defined cyclonic circulation extends from the surface to the bottom, without reversal in its direction. Deep currents are steered by the steep topographic slope, and well correlated with surface currents at seasonal and longer time scales. (c) 2006 Published by Elsevier Ltd.

Subject Keywords

Oceanography

URI

https://hdl.handle.net/11511/66401

Journal

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY

DOI

https://doi.org/10.1016/j.dsr2.2006.04.017

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

On the summer mesoscale variability of the Black Sea Besiktepe, ST; Lozano, CJ; Robinson, AR (Journal of Marine Research/Yale, 2001-07-01) The evolution of the Black Sea temperature, salinity and circulation, from large scale to mesoscale, is studied using a data-driven primitive equation simulation. The data are drawn from (i) a basin-wide hydrographic survey, CoMSBlack'92, obtained in the Summer of 1992; (ii) wind stress derived from wind analyses of the Sevastopol MSIA/URHI Office; (iii) climatological heat fluxes; and (iv) climatological river outflows. The primitive equation model is from the Harvard Ocean Prediction System. The simulatio...
Carbon and nitrogen isotopic ratios of suspended particulate organic matter (SPOM) in the Black Sea water column Coban-Yildiz, Yesim; Altabet, M; YILMAZ, AYŞEN; Tuğrul, Süleyman (Elsevier BV, 2006-01-01) Carbon and nitrogen isotopic ratios (delta(13)N and delta(13)C) of suspended particulate organic matter (SPOM) in the water column of the Black Sea were measured at a total of nine stations in September-October (autumn) 1999 and May 2001. For comparison, a station in the Mediterranean Sea and one in the Sea of Marmara were sampled in October 1999. Large-sized particle samples, as well as samples of surface sediment were also collected for N and C isotopic analysis. The results revealed important vertical an...
Extension of sea surface temperature unpredictability Akhmet, Marat; Alejaily, Ejaily Milad (Springer Science and Business Media LLC, 2019-02-01) The sea surface temperature (SST) variability is clearly affected by global climate patterns, which involve large-scale ocean-atmosphere fluctuations similar to the El Nino-Southern Oscillation (ENSO). We give mathematical arguments for the SST to be unpredictable over oceans. Sensitivity (unpredictability) is the core ingredient of chaos. Several researches suggested that the ENSO might be chaotic. It was Vallis (Science 232:243-245, 1986) who revealed unpredictability in ENSO by reducing his model to the ...
A SYNTHESIS OF THE LEVANTINE BASIN CIRCULATION AND HYDROGRAPHY, 1985-1990 OZSOY, E; HECHT, A; UNLUATA, U; BRENNER, S; SUR, HI; BISHOP, J; LATIF, MA; ROZENTRAUB, Z; OGUZ, T (Elsevier BV, 1993-01-01) The Levantine Basin circulation derived from recent data consists of a series of sub-basin-scale to mesoscale eddies interconnected by jets. The basin-scale circulation is masked by eddy variability that modulates and modifies it on seasonal and interannual time scales. Long-term qualitative changes in the circulation are reflected in the bifurcation patterns of the mid-basin jets, relative strengths of eddies and the hydrographic properties at the core of these eddies. Confinement within the Basin geometry...
Analytical pyrolysis of suspended particulate organic matter from the Black Sea water column Coban-Yildiz, Yesim; Fabbri, Daniele; Baravelli, Valentina; Vassura, Ivano; Yilmaz, Aysen; Tuğrul, Süleyman; Eker-Develi, Elif (Elsevier BV, 2006-01-01) The chemical composition of suspended particulate organic matter (SPOM) in the Black Sea water column has been characterized by pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). The results are discussed in terms of the hydro-chemical properties of the water column. Phytoplankton cultures grown in the lab also were analyzed to provide reference information for the euphotic zone SPOM. The composition of SPOM in the Black Sea displays important vertical variations dependent on specific distinct bioch...

Citation Formats

G. Korotaev, T. Oguz, and S. Riser, “Intermediate and deep currents of the Black Sea, obtained from autonomous profiling floats,” DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY, pp. 1901–1910, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66401.