Variability of saltwater flow in the Hoburg Channel, Baltic Sea: in situ measurements vs NEMO modelling
https://doi.org/10.59887/2073-6673.2024.17(2)-8
Abstract
A half-year long time series of the bottom layer velocity measured in situ in the Hoburg Channel displayed seven-day oscillations of the saltwater flow. The flow was characterized by alterations of surges with the increase of northward velocity to approximately 0.2–0.3 m/s and blockages when the northward velocity vanishes or becomes small negative. The measured time series of the northward velocity component was surprisingly highly correlated with the simulation by NEMO reanalysis at the correlation coefficient of 0.82 and the 95 % confidence limits of 0.76–0.86. The seven-day oscillations were accompanied by almost synchronous oscillations of the southeast component of the wind vector. It can be considered convincing evidence that the seven-day oscillations in the saltwater flow were caused by wind forcing.
Keywords
Tilt current meter,
bottom layer,
Baltic Sea,
saltwater flow,
NEMO,
wind forcing,
near bottom currents,
correlation
Supporting agencies: The work was performed within the framework of the state assignment of the Shirshov Institute of Oceanology RAS: Zhurbas V.M. (problem setup, theoretical work, text writing) — the theme No. FMWE‑2024-0015; Paka V.T., Golenko M.N., Korzh A.O. and Kondrashov A.A. (data acquisition, data processing and interpretation of results) — the theme No. FMWE‑2024-0025.
About the Authors
V. T. Paka
Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
Paka, Vadim T., Chief Researcher Scientist, Prof., Dr. Sci. (Phys.-Math.)
36 Nakhimovsky Prosp., Moscow 117997
WoS ResearcherID I‑6090-2016
Scopus Author ID7003547709
V. M. Zhurbas
Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
Zhurbas, Victor M., Chief Researcher Scientist, Prof., Dr. Sci. (Phys.-Math.)
36 Nakhimovsky Prosp., Moscow 117997
WoS ResearcherID A‑7341-2009
Scopus Author ID6603968937
M. N. Golenko
Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
GOLENKO, Mariya N., Senior Researcher Scientist, Cand.Sci. (Phys.-Math.)
36 Nakhimovsky Prosp., Moscow 117997
WoS ResearcherID K‑1544-2016
Scopus Author ID24080316600
A. O. Korzh
Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
KORZH, Andrey O., Lead Engineer
36 Nakhimovsky Prosp., Moscow 117997
WoS ResearcherID L‑3192-2016
Scopus Author ID15080985900
A. A. Kondrashov
Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
Kondrashov, Aleksey A., Junior Researcher Scientist
36 Nakhimovsky Prosp., Moscow 117997
WoS ResearcherID S‑2848-2016
Scopus Author ID36657225800
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Review
For citations:
Paka V.T., Zhurbas V.M., Golenko M.N., Korzh A.O., Kondrashov A.A. Variability of saltwater flow in the Hoburg Channel, Baltic Sea: in situ measurements vs NEMO modelling. Fundamental and Applied Hydrophysics. 2024;17(2):94-102. https://doi.org/10.59887/2073-6673.2024.17(2)-8
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