Examples of Approaches to Studying the Temperature Variability of Black Sea Shelf Waters with a Cluster of Temperature Sensor Chains

Ocherednik, V. V.; Зацепин, А. Г.; Куклев, С. Б.; Баранов, В. И.; Mashura, V. V.

doi:10.1134/s000143702001018x

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…In the short-period band, vertical displacements of the thermocline at a depth range of 15-25 m were irregular. However, few of these displacements could be associated with the internal waves of periods of 10 min, which were observed using temperature sensor chains [23]. Intermittent high-frequency waves are aliased in the Winchi profiler observations, which help sampling low-frequency dynamics, e.g., near-inertial waves.…”

Section: Trialsmentioning

confidence: 99%

Automated Tethered Profiler for Hydrophysical and Bio-Optical Measurements in the Black Sea Carbon Observational Site

Ostrovskii

Emelianov

Kochetov

et al. 2022

JMSE

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Biogeochemical cycles of carbon transformation throughout the euphotic zone of the sea are controlled by physical processes, e.g., daily thermocline, variation in solar irradiance, thermohaline convection, and intermittent mixing. These processes should be regularly observed with sufficient time resolution at fixed geographical locations. This study provides a brief overview of the carbon observational site in the Northeastern Black Sea. The focus is on the design of a new tethered profiler Winchi for the inner continental shelf part of the site. The profiler hull and two outriggers comprise an open trimaran platform that is positively buoyant and tends to maintain a horizontal position in the water. The lower end of the winch wire is secured to the bottom anchor. By unwinding/winding the wire, the profiler ascends/descends while measuring the depth profiles of marine environment parameters ranging from the seafloor to air–sea interface. After surfacing, the profiler determines its location using the Global Positioning System (GPS) and transmits data to (and from) a server on land through the Global System for Mobile Communications (GSM). Initial field tests with the Winchi profiler at the Northeastern Black Sea shelf exhibited promising results. We report these early tests to demonstrate the use of Winchi.

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Section: Trialsmentioning

confidence: 99%

Automated Tethered Profiler for Hydrophysical and Bio-Optical Measurements in the Black Sea Carbon Observational Site

Ostrovskii

Emelianov

Kochetov

et al. 2022

JMSE

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“…We could not separate the horizontal advection of cold waters from upwelling, and we do not know the direction or speed of the observed internal waves. A cluster of a few thermochains, presented by Ocherednik in [34], seems to be more complete. Additionally, any processes on the shelf are closely related to the dynamics of waters.…”

mentioning

confidence: 92%

“…Complex sonde Aqualog and thermistor chains were used for in situ measurements [32,33]. Thermistor chains were installed at different depths and provided data about seasonal temperature variations [33,34]. Much more complete information about the spatiotemporal variability in the water temperature was obtained by using a cluster of three thermistor chains [34].…”

Section: Introductionmentioning

confidence: 99%

“…Thermistor chains were installed at different depths and provided data about seasonal temperature variations [33,34]. Much more complete information about the spatiotemporal variability in the water temperature was obtained by using a cluster of three thermistor chains [34]. Other environmental monitoring methods were also used at the "Gelendzhik" polygon [35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

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Water Structure in the Utrish Nature Reserve (Black Sea) during 2020–2021 According to Thermistor Chain Data

Silvestrova

Myslenkov

Puzina

et al. 2023

JMSE

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This paper reports the water temperature structure and associated coastal processes in the NE part of the Black Sea. In situ temperature was measured in the water area of the Utrish Nature Reserve. The thermistor chain was moored in 2020 and included 6–10 temperature sensors with an accuracy of ±0.025 °C and time step of one minute. The seasonal variations in the water temperature, upwelling events, internal waves and diurnal cycle were analyzed. The maximum value of SST (28.6 °C) was registered in the subsurface layer in August 2021; the minimum (7.7 °C) was registered in March 2022. Estimates of the diurnal temperature cycle were obtained according to spectral analysis. Summer months show the diurnal cycle more than 60% of the time, and the cold period shows it less than 10% of the time. Internal waves appeared in thermocline with periods from 5 min to 20 h. The strongest Ekman upwelling was registered in September 2021. The water temperature dropped from 26 °C to 16 °C in 10 h. Additionally, quality assessments of two hydrodynamic models were made. The models showed a good correlation (0.9) with water temperature measurements, but RMSE could reach 1–1.8 °C for subsurface layers. Temperature variability and its characteristics are an important basis for future coastal ecosystem studies in the Utrish.

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New Measuring and Data Transmission Equipment for Operational Oceanography at the Gelendgik Black Sea Test Site of the Shirshov Institute of Oceanology, Russian Academy of Sciences

Baranov,

Zatsepin,

Kuklev

et al. 2024

Oceanology

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Examples of Approaches to Studying the Temperature Variability of Black Sea Shelf Waters with a Cluster of Temperature Sensor Chains

Cited by 7 publications

References 9 publications

Automated Tethered Profiler for Hydrophysical and Bio-Optical Measurements in the Black Sea Carbon Observational Site

Automated Tethered Profiler for Hydrophysical and Bio-Optical Measurements in the Black Sea Carbon Observational Site

Water Structure in the Utrish Nature Reserve (Black Sea) during 2020–2021 According to Thermistor Chain Data

New Measuring and Data Transmission Equipment for Operational Oceanography at the Gelendgik Black Sea Test Site of the Shirshov Institute of Oceanology, Russian Academy of Sciences

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