scholarly journals Subsea uplifts origin of the rugozerskaya bay and the great Salma channel (Kandalaksha bay)

Author(s):  
Ya. E. Terekhina ◽  
M. Yu. Tokarev ◽  
N. V. Shevchenko ◽  
N. A. Kozupitsa

Lots of shallow Rugozerskaya firth (Kandalaksha Bay of the White Sea) were studied on the basis of integrated explorationsincluding continuous seismic profiling, side scan sonar (SSS), bottom sampling and diver inspection. As a result a number of regularities in the geological structure of the region was identified, in particular - the origi of certain bottom forms and coast terrain was revealled.

Author(s):  
A. V. Starovoytov ◽  
K. Z. Valiullina ◽  
A. N. Oshkin ◽  
A. M. Piatilova

The geological structure of two freshwater lakes (the Verkhneye and the Vodoprovodnoye) located near the White sea biological Station of the Moscow State University (the Kandalaksha Bay of the White sea) is considered for the first time according to the GPR data. The morphology of the top of the Archean basement, the structure of the Quaternary sedimentary cover and bottom relief were studied. Shallow marine sediments overlying the rocks of the Archean and a sequence of lacustrine-marsh sediments were identified using the drilling data in the Quaternary cover. Structural schemes were constructed for the main reflecting horizons, while isopach schemes were generated on the basis of the main sequences. The values of electrical resistivity and absorption coefficient are calculated and the possibilities of their use for the delineation of GPR facies are considered.


Author(s):  
A. P. Stolyarov ◽  
M. V. Mardashova

Features of the species and spatial structure of macrobenthic sublittoral communities in a lagoon ecosystem on the Green Cape (the White Sea) were studied. 31 invertebrate species and 3 species of sea grasses and algae (Zostera marina, Cladophora sericea, and Fucus vesiculosus) were found in the sublittoral of the surveyed lagoon. The data on the species composition, diversity and spatial structure of macrobenthos communities indicate the predominance of littoral brackish-water and marine euryhaline macrobenthos species (Hydrobia ulvae, Tubificoides benedii, Chironomus salinarius, and Macoma balthica) in the coastal region of the lagoon, marine euryhaline littoral and sublittoral species (mainly polychaetes Heteromastus filiformis, Polydora ciliata, and Capitella capitata) in the central deeper region, and marine sublittoral less euryhaline species (Pontoporeia femorata, Anonyx nugans, Nereimyra punctata, Terebellides stroemi, Astarte montagui, Micronephthys minuta, and Atylus carinatus) at the exit from the lagoon. The ecosystem of the Green Cape lagoon belongs to lagoons significantly fenced off from the sea with depleted specific fauna (many littoral species) and largely influenced by carbon load and salinity. The reduced connection of the lagoon with the sea due to the continued rise of the White Sea coast (4 mm per year in this area) will contribute to a decrease in the species diversity and the predominance of few small eurytopic invertebrate species resistant to organic load, oxygen deficiency, and desalination.


Author(s):  
M. Yu. Tokarev ◽  
E. N. Poludetkina ◽  
A. V. Starovoytov ◽  
A. S. Pirogova ◽  
S. R. Korost ◽  
...  

The article discusses the results of complex geological, geophysical and geochemical studies of gas-saturated sediments within the Kandalaksha gulf, the White Sea. As a part of the marine study detailed seismoacoustic studies were conducted, resulting in the geometry of the seabed, the distribution of geological peculiarities of the sedimentary sequence, including the zones of focused unloading of hydrocarbon fluids. It is shown that assemblages of the «gas caps» are confined to the zones of maximal thickness of post-glacial sediments. The composition of the organic matter in the sediments and the gas phase has been studied in detail.


Oceanology ◽  
2006 ◽  
Vol 46 (4) ◽  
pp. 492-500 ◽  
Author(s):  
E. S. Chertoprud ◽  
M. V. Chertoprud ◽  
D. V. Kondar ◽  
P. N. Kornev ◽  
A. A. Udalov

2019 ◽  
Vol 323 (2) ◽  
pp. 93-104 ◽  
Author(s):  
P.N. Yershov ◽  
A.A. Matvienko ◽  
D.A. Aristov

We studied age structure, growth and distribution of European flounder Platichthys flesus at the sea in Chupa Inlet (Kandalaksha Bay, the White Sea). Immature and mature fishes fed at shallows of Chupa Inlet and adjacent open sea area in June-August. Size-age and sex composition of fishes in catches are presented in the paper. Individuals of 17–27 cm length and 4–5 year age constituted the majority of catches (45%). On the whole, males numerically predominated over females in the samples. Analysis of sexual differences of growth has shown that females grew faster than males. The most intensive growth took place in July–August, according to the increments on the otoliths. Growth rate of the flounder from Chupa Inlet appeared to be similar to the growth rate of the flounder from other open shore sites of Kandalaksha Bay. We have compared also peculiarities of growth and age structure of flounder populations from Kandalaksha Bay to those from other bays of the White Sea. Significant differences of the growth rate were found between flounders from Kandalaksha, Onega, Dvina and Mezen' Bays. Both males and females from Onega Bay grew faster than other. Growth rate of fish decreased towards the north (Kandalaksha Bay) and the north-east (Mezen' Bay). The most slow-growing flounder inhabited shallows of Mezen' Bay. Statistical analysis has shown that age structure of flounder populations varied in different bays of the White Sea, and observed regional variations were characteristic for both males and females. Flounder population in Onega Bay was characterized by the dominance of the younger individuals compared to populations in other bays. The greatest mean age of flounder was registered in populations from the north-west (Kandalaksha Bay) and the north-east (Mezen' Bay) parts of the White Sea. Males and females in populations from Onega and Dvina Bays differed significantly in the mean age, and as a rule females were older. No age differences between sexes were found in flounder population of Mezen' Bay. We suppose that temperature conditions were among the main factors influencing regional differences in growth rate and age structure of the flounder populations in the White Sea.


Author(s):  
K. CHEKANOV ◽  
◽  
A. KUBLANOVSKAYA ◽  
T. FEDORENKO ◽  
E. LOBAKOVA ◽  
...  

2005 ◽  
Vol 32 (5) ◽  
pp. 469-483 ◽  
Author(s):  
S. I. Shaporenko ◽  
G. A. Koreneva ◽  
A. N. Pantyulin ◽  
N. M. Pertsova

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