Temperature structure in the coastal zone of the Baltic Sea

Morozov, E. G.; Щука, С. А.; Golenko, N. N.; Zapotylko, V. S.; Stont, J. I.

doi:10.1134/s1028334x07070197

Cited by 8 publications

(4 citation statements)

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“…A tendency for an increase of P/B coefficients with depth and in the direction from the coast into the open sea was observed in OctoberNovember. Such distribution is in agreement with the patterns of decrease in water temperatures throughout autumn [21]. The range of P/B values was from 0.01 to 3.08 (at the depth of 75 m).…”

Section: Resultssupporting

confidence: 82%

Bacterioplankton of the Gdansk Basin, Baltic Sea

et al. 2012

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The numbers, biomass, and production of bacterioplankton were determined in the Russian Sec tor of the Gdansk Basin (Baltic Sea) in 2007-2009. Significant spatial and temporal variations were deter mined. During the year, bacterial activity increased with increasing water temperature and higher availability of organic substrates. The lowest bacterial production (0.01-31.63 mg C m -3 day -1 ) was observed in late win ter and late autumn, while the highest (0.17-341.70 mg C m -3 day -1 ) occurred in spring and summer. Since bacterial numbers and biomass were found to depend on the weather conditions and the terrigenous inflow, significant variations were observed from year to year. The highest and lowest numbers and biomass of bacte rioplankton determined in summer were 0.09-1.10 × 10 6 cells mL -1 and 2-22 mg C m -3 for July 2007 and 1.96-11.23 × 10 6 cells mL -1 and 23-123 mg C m -3 for July 2009. The values of these parameters were the highest along the coast and decreased towards the open sea.

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Section: Resultssupporting

confidence: 82%

Bacterioplankton of the Gdansk Basin, Baltic Sea

et al. 2012

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“…67, 2-7 March 2005). Comparative analysis of data of several such spring cruises, presented in Morozov et al (2007), says that horizontal temperature gradients are typical in March for coastal regions, and more intense heating in shallow areas may in some years generate a front along the shelf break.…”

Section: Resultsmentioning

confidence: 99%

“…Physically, it proceeds until at least some fraction of waters with T <Tmd is limited from below by the sloping bottom. Morozov et al (2007) As long as the CIL comprises water below the Tmd in warm period, vertical temperature profile will cross the Tmd twice (see Fig. 10), thus providing conditions for the sort of thermobaric instability.…”

Section: Summer-time Evolution: Intralayer Convectionmentioning

confidence: 99%

On contribution of horizontal and intra-layer convection to the formation of the Baltic Sea cold intermediate layer

Chubarenko

Demchenko

2010

Ocean Sci.

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Abstract. Seasonal cascades down the coastal slopes and intra-layer convection are considered as the two additional mechanisms contributing to the Baltic Sea cold intermediate layer (CIL) formation along with conventional seasonal vertical mixing. Field measurements are presented, reporting for the first time the possibility of denser water formation and cascading from the Baltic Sea underwater slopes, which take place under fall and winter cooling conditions and deliver waters into intermediate layer of salinity stratified deep-sea area. The presence in spring within the CIL of water with temperature below that of maximum density (Tmd) and that at the local surface in winter time allows tracing its formation: it is argued that the source of the coldest waters of the Baltic CIL is early spring (March-April) cascading, arising due to heating of water before reaching the Tmd. Fast increase of the open water heat content during further spring heating indicates that horizontal exchange rather than direct solar heating is responsible for that. When the surface is covered with water, heated above the Tmd, the conditions within the CIL become favorable for intralayer convection due to the presence of waters of Tmd in intermediate layer, which can explain its well-known features -the observed increase of its salinity and deepening with time.

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“…Physically, it proceeds until at least some fraction of waters with T <Tmd is limited from below by the sloping bottom. Morozov et al (2007) report field measurements of 52 cruise of r/v "Professor Stokman" (24-29 May 2003), performed in coastal zone near the Curonean spit (from the shore to 78 m depth), where cold water bodies (T <Tmd) are still over slope, well above the level of the CIL in open area.…”

Section: Summer-time Evolution: Intralayer Convectionmentioning

confidence: 99%

On contribution of horizontal and intra-layer convection to the formation of the Baltic Sea cold intermediate layer

Chubarenko¹,

Demchenko²

2008

Preprint

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Seasonal cascades down the coastal slopes and intra-layer convection are considered as the two additional mechanisms contributing to the Baltic Sea cold intermediate layer (CIL) formation along with conventional seasonal vertical mixing. Field measurements are presented, reporting for the first time the possibility of denser water formation and cascading from the Baltic Sea underwater slopes, which take place under fall and winter cooling conditions and deliver waters into intermediate layer of salinity stratified deep-sea area. The presence in spring within the CIL of water with temperature below that of maximum density (Tmd) and that at the local surface in winter time allows tracing its formation: it is argued that the source of the coldest waters of the Baltic CIL is early spring (March-April) cascading, arising due to heating of water before reaching the Tmd. Fast increase of the open water heat content during further spring heating indicates that horizontal exchange rather than direct solar heating is responsible for that. When the surface is covered with water, heated above the Tmd, the conditions within the CIL become favorable for intralayer convection due to the presence of waters of Tmd in intermediate layer, which can explain its well-known features-the observed increase of its salinity and deepening with time.

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Temperature structure in the coastal zone of the Baltic Sea

Cited by 8 publications

References 1 publication

Bacterioplankton of the Gdansk Basin, Baltic Sea

Bacterioplankton of the Gdansk Basin, Baltic Sea

On contribution of horizontal and intra-layer convection to the formation of the Baltic Sea cold intermediate layer

On contribution of horizontal and intra-layer convection to the formation of the Baltic Sea cold intermediate layer

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