КОМПЛЕКСНЫЕ ИССЛЕДОВАНИЯ ПРИБРЕЖНЫХ АКВАТОРИЙ ЯПОНСКОГО И ОХОТСКОГО МОРЕЙ, НАХОДЯЩИХСЯ ПОД ВЛИЯНИЕМ РЕЧНОГО СТОКА (71-Й РЕЙС Научно-Исследовательского СУДНА “ПРОФЕССОР ГАГАРИНСКИЙ”), "Океанология"

Тищенко, П. Я.; Лобанов, В. Б.; Shulkin, V. M.; Мельников, В. В.; Цой, И Б; Семкин, П. Ю.; Tishchenko, P. Ya.; Баннов, В. А.; Белоус, О. В.; Васильева, Л. Е.; Еловская, О. А.; Sagalaev, S. G.; Федорец, Ю. В.

doi:10.7868/s0030157418020193

Cited by 3 publications

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“…В основу работы были положены экспедиционные данные, полученные в 2016 году на научно-исследовательском судне (НИС) «Профессор Гагаринский» [38], а также НИС «Первенец» (рейс № 26, 1976 г.) [13], которые включают результаты эхолотного промера и донного пробоотбора дночерпателем и прямоточной трубкой.…”

Section: материалы и методыunclassified

Environmental Conditions and Bottom Topography of the Academy Bay (Sea of Okhotsk)

Belous¹,

Leonova²,

Valitov³

2023

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A comprehensive analysis of the field data and findings from previous studies made it possible to refine the bottom morphology of the Academy Bay. Environmental conditions of the Shantar region were considered. Natural factors that determine differences in morphodynamics of individual parts of the Academy Bay were revealed. The relief and relief-forming processes were described. Denudation and alongshore sediment transport were found to predominate. The accumulation of recent sediments is confined to the heads of bays and estuaries. Differences were revealed in the distribution of minor relief features and the composition of bottom sediments in parts of the Ulban, Konstantin, and Nikolai bays, which was predetermined by a complex system of sea currents. Fluvial erosion was found to occur as both linear - valley and isometric depressions that are more widespread in the Academy Bay and larger in size than in the earlier studied Tugur and Uda bays. The morphodynamic zone distribution of the bay bottom yielded four zones differing in manifestations of present-day exomorphogenesis. Their description is presented. Findings of the research can be used for follow-up studies and for the purposes of economic development of the region.

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Section: материалы и методыunclassified

Environmental Conditions and Bottom Topography of the Academy Bay (Sea of Okhotsk)

Belous¹,

Leonova²,

Valitov³

2023

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“…Исследуемые реки являются нерестовыми для лососей [3], их приливные осушки -это место кормления птиц, в том числе краснокнижных [6]. Приемные бассейны рек Уда и Усалгин мало изучены, лишь недавно, летом 2016 г., были проведены комплексные исследования (гидрологические, гидрохимические, гидробиологические, гео химические) речных, эстуарных и морских вод в экспедиции ТОИ ДВО РАН [13]. В предшествующих исследованиях по данному району изучались воды за пределами эстуариев и без учета устьевой области реки [2,20] или исключительно речные воды [15].…”

Section: Introductionunclassified

Characterization of production/destruction processes in the Uda and Usalgin estuaries of the Sea of Okhotsk during the summer flood

Семкин¹,

Tishchenko²,

Тищенко³

et al. 2020

Вестник ДВО РАН

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Обсуждаются продукционные и гидрохимические параметры эстуарных экосистем рек Уда и Усалгин с расходом воды 4390 и 173 м3/с соответственно. Их эстуарии являются макроприливными с высотой приливов до 9,7 м. Приливы разрушают вертикальную плотностную стратификацию воды. Это, в совокупности с относительно низкими концентрациями неорганических форм азота в речных водах, снижает величину автотрофной продукции в эстуариях. Однако высокие концентрации растворенного органического углерода в речных водах обеспечивают благоприятные условия для образования гетеротрофной продукции не только в реках, но и в зонах смешения. Неорганические формы биогенных веществ, поставляемые реками, являются основой автотрофной продукции, что в большей степени проявляется при солености воды более 24 . В целом эстуарии рек Уда и Усалгин можно характеризовать как гетеротрофные бассейны. Parameters showing the direction of the processes of production / destruction of organic matter of the estuarine ecosystems of the Uda and Usalgin rivers with a flow rate of 4,390 and 173 m3/s, respectively, during the summer flood of 2016 are discussed. The estuaries of the Uda and Usalgin rivers are macro-tidal with tidal heights of up to 9.7 m. Tides break vertical density stratification of water. The concentrations of inorganic forms of nitrogen in river waters are low. These two factors reduce the intensity of autotrophic production in estuaries. However, high concentrations of dissolved organic carbon in river waters provide favorable conditions for heterotrophic production not only in rivers, but also in mixing zones. The source of inorganic forms of nutrients is the result of distraction of organic matter supplied by rivers, but this source, which is the basis of autotrophic products, is to a greater extent at the late stage of mixing zones with water salinity of more than 24 . In general, estuaries of these rivers can be characterized as heterotrophic basins.

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Diatoms in Surface Sediments of the Academy Bay of the Sea of Okhotsk

Tsoy,

Prushkovskaya

2023

Biologiya Morya

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The study of diatoms in the surface sediments of the Academy Bay (Sea of Okhotsk) revealed a rich diatom flora (187 species and intraspecific taxa), represented mostly by marine and brackish water species. The predominance of benthic-planktonic and benthic species indicates a significant role of microphytobenthos in the Academy Bay. The diatom assemblages distinguished with the use of cluster analysis are homogeneous in their taxonomic composition, but differ in ecological structure, which is mainly determined by water salinity. The concentration of diatoms in the sediments in the open part of the Academy Bay and in the apex of the Ulban Bay depends on a high productivity of waters and the lithological composition of sediments. A relatively low content of diatoms in the sediments is associated with the severe climatic conditions of the region that is close to the Arctic.

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Cited by 3 publications

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Environmental Conditions and Bottom Topography of the Academy Bay (Sea of Okhotsk)

Environmental Conditions and Bottom Topography of the Academy Bay (Sea of Okhotsk)

Characterization of production/destruction processes in the Uda and Usalgin estuaries of the Sea of Okhotsk during the summer flood

Diatoms in Surface Sediments of the Academy Bay of the Sea of Okhotsk

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