Autonomous system for vertical profiling of the marine environment at a moored station

Ostrovskii, Alexander; Зацепин, А. Г.; Soloviev, V. A.; Tsibul’sky, A. L.; Shvoev, D. A.

doi:10.1134/s0001437013020124

Cited by 42 publications

(20 citation statements)

References 7 publications

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“…Direct observations based on surface buoys ( Zhurbas et al, 2004 ; Poulain et al, 2005 ) and Acoustic Doppler Velocity Profiler (ADCP) measurements ( Oguz & Besiktepe, 1999 ) in the upper 100 m have obtained current velocity of about 0.4–0.5 m s −1 , occasionally increasing up to 1.0 m s −1 along the axis of the RC jet. As to deep and intermediate layers, deeper 250 m, i.e., under the RC, as was revealed from drifter tracks ( Zatsepin et al, 2003 ; Korotaev, Oguz & Riser, 2006 ) and ADCP measurements ( Ostrovskii et al, 2013 ), the current velocity gradually decreased reaching 0.04–0.02 m s −1 near the bottom.…”

Section: Region Of Interestmentioning

confidence: 74%

Effects of mesoscale eddies on behavior of an oil spill resulting from an accidental deepwater blowout in the Black Sea: an assessment of the environmental impacts

Korotenko¹

2018

PeerJ

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Because of the environmental sensitivity of the Black Sea, as a semi-enclosed sea, any subsea oil spill can cause destructive impacts on the marine environment and beaches. Employing numerical modeling as a prediction tool is one of the most efficient methods to understand oil spill behavior under various environmental forces. In this regard, a coupled circulation/deepsea oil spill model has been applied to the Black Sea to address the behavior of the oil plume resulting from a representative hypothetical deepwater blowout. With climatological forcing, the hydrodynamic module based on DieCAST ocean circulation model realistically reproduces seasonally-varying circulation from basin-scale dominant structures to meso- and sub-mesoscale elements. The oil spill model utilizes pre-calculated DieCAST thermo-hydrodynamic fields and uses a Lagrangian tracking algorithm for predicting the displacement of a large number of seeded oil droplets, the sum of which forms the rising oil plume resulting from a deepwater blowout. Basic processes affecting the transport, dispersal of oil and its fate in the water column are included in the coupled model. A hypothetical oil source was set at the bottom, at the northwestern edge of the Shatsky Ridge in the area east of the Crimea Peninsula where the oil exploration/development is likely to be planned. Goals of the study are to elucidate the behavior of the subsea oil plume and assess scales of contamination of marine environment and coastlines resulting from potential blowouts. The two 20-day scenarios with the oil released by a hypothetical blowout were examined to reveal combined effects of the basin-scale current, near-shore eddies, and winds on the behavior of the rising oil plume and its spreading on the surface. Special attention is paid to the Caucasian near-shore anticyclonic eddy which is able to trap surfacing oil, detain it and deliver it to shores. The length of contaminated coastlines of vulnerable Crimean and Caucasian coasts are assessed along with amounts of oil beached and deposited.

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Section: Region Of Interestmentioning

confidence: 74%

Effects of mesoscale eddies on behavior of an oil spill resulting from an accidental deepwater blowout in the Black Sea: an assessment of the environmental impacts

Korotenko¹

2018

PeerJ

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“…In the lower layers sea (750 -1700 m) the barotropic component of current velocity, according to ARGO floating buoys, is 2 -3 cm/s [19 -20]. A similar estimation of the current velocity in the lower sea layer obtained based on the Akvalog profiler data [18].…”

Section: Vertical Structure Of Current Velocity Fieldmentioning

confidence: 79%

Structure of the Black Sea Currents Based on the Results of the LADCP Observations in 2004–2014

Morozov¹,

Lemeshko²,

Shutov³

et al. 2017

PhO

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The article presents the core results of lowered acoustic Doppler current profiler (LADCP) applied in the Black Sea within [2004][2005][2006][2007][2008][2009][2010][2011][2012][2013][2014]. Average features of the vertical structure of currents in the upper 600 m layer are outlined. The linear relation between vertical distribution of kinetic energy isopycnically averaged over the station ensemble and density is established. This relation is traced till the isopycn occurrence depth with density of 17 kg/m 3 (~500 m). The mean current velocity has near constant value about ~ 4 cm/s in lower depth layers (>500 m), which is in a good agreement with autonomic buoys data. The averaged profile of current velocity vertical shears shows two wellseparated maxima in the seasonal and main pycnocline layers. LADCP derived velocity shears are more than ten times exceed the geostrophic current shears. Turbulent vertical mixing coefficient, calculated by the G89 model (Gregg 1989) demonstrates the denominated minimum in the permanent pycnocline (410 -6 m 2 /s) and increases with depth to achieve value 210 -5 m 2 /s at 450 m depth. The profile of current velocity averaged by the ensemble casts in the near bottom boundary layer demonstrates near logarithmic relation.

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“…Measurements are carried out at predefined depths. Aqualog, a Russian oceanographic mobile profiler [ 27 ], and the McLane Moored Profiler [ 28 ] can be included in this group. Other models utilize variable buoyancy for system propulsion.…”

Section: Introductionmentioning

confidence: 99%

Novel Robotic Platforms for the Accurate Sampling and Monitoring of Water Columns

Fernández

Apalkov

Armada

2016

Sensors

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The hydrosphere contains large amounts of suspended particulate material, including living and non-living material that can be found in different compositions and concentrations, and that can be composed of particles of different sizes. The study of this particulate material along water columns plays a key role in understanding a great variety of biological, chemical, and physical processes. This paper presents the conceptual design of two patented robotic platforms that have been conceived for carrying out studies of water properties at desired depths with very high accuracy in the vertical positioning. One platform has been specially designed for operating near to a reservoir bottom, while the other is intended to be used near the surface. Several experimental tests have been conducted in order to validate the proposed approaches.

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Autonomous system for vertical profiling of the marine environment at a moored station

Cited by 42 publications

References 7 publications

Effects of mesoscale eddies on behavior of an oil spill resulting from an accidental deepwater blowout in the Black Sea: an assessment of the environmental impacts

Effects of mesoscale eddies on behavior of an oil spill resulting from an accidental deepwater blowout in the Black Sea: an assessment of the environmental impacts

Structure of the Black Sea Currents Based on the Results of the LADCP Observations in 2004–2014

Novel Robotic Platforms for the Accurate Sampling and Monitoring of Water Columns

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