Oceanology最新文献_第3页

Grain Size Properties of Surface Bottom Sediments from Chaun Bay 潮安湾表层海底沉积物的粒度特性

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700115

A. S. Ulyantsev, E. A. Streltsova, A. N. Charkin

{"title":"Grain Size Properties of Surface Bottom Sediments from Chaun Bay","authors":"A. S. Ulyantsev, E. A. Streltsova, A. N. Charkin","doi":"10.1134/s0001437024700115","DOIUrl":"https://doi.org/10.1134/s0001437024700115","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Based on the results of an analysis of 174 samples of bottom sediments collected at 48 stations in the Chaun Bay during the cruise 60 of the R/V Akademik Oparin (October 2020), it was found that their grain size distribution varies from poorly sorted silty clay to well sorted sand. The results of the study led to conclusion that the main sedimentation mechanisms in Chaun Bay are thermal abrasion, river runoff, and abrasion, as well as ice rafting and aeolian transport. The zoning of grain size types of bottom sediments is related to the bottom topography and consistent with areas affected by riverine runoff, abrasion, and thermal coastal abrasion, as well as with the direction of currents. The high occurrence of coarse clastic matter in sediments is evidence of abrasion of the coastal zone and active ice rafting of large (up to 15 cm) rock fragments. The vertical variability of the grain size parameters of the studied bottom sediments within the upper 20 cm layer reflects gradual Late Holocene intensification of terrigenous (fluvial and thermal abrasion) fluxes with the current effects of climate change in the Arctic.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141520537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Problem of Reconstructing the Profile of the Sea Surface from the Video Image of Laser Beams 从激光束视频图像重建海面轮廓的问题

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700024

V. V. Sterlyadkin

{"title":"The Problem of Reconstructing the Profile of the Sea Surface from the Video Image of Laser Beams","authors":"V. V. Sterlyadkin","doi":"10.1134/s0001437024700024","DOIUrl":"https://doi.org/10.1134/s0001437024700024","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Currently, there are no remote methods for recording the instantaneous two-dimensional profile of the sea surface Z(x, y, t) in field conditions, nor are there any methods for recording capillary wave profiles directly on the sea surface. The short-wavelength component of sea waves plays a very important role in radiometry in the formation of the surface’s own radiation and in solving inverse radar problems. This article proposes an optical measurement technique that can measure the parameters of the entire wave spectrum, including capillary waves with amplitude of less than 0.1 mm. However, the author has not yet been able to fully solve the inverse problem of reconstructing the two-dimensional wave profile. The author considered it expedient to formulate this problem and involve the scientific community in its successful solution. Obtaining the profile of sea waves Z(x, y, t) in natural conditions with a high update rate will yield complete information about the characteristics of waves, temporal and spatial spectra of elevations, spectra of slopes; it will also be possible to study the evolution of waves when the wind changes. The possibility of recording and studying the short-wavelength components of waves, including capillary waves, is of particular value.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141520531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Findings of the Invasive Snow Crab Chionoecetes opilio (O. Fabricius, 1788) (Decapoda, Oregoniidae) in the Eastern Kara Sea 在东卡拉海首次发现入侵雪蟹 Chionoecetes opilio (O. Fabricius, 1788) (Decapoda, Oregoniidae)

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700085

A. K. Zalota, A. A. Udalov, M. V. Chikina, D. V. Kondar, I. V. Lyubimov, E. V. Lipukhin, I. M. Anisimov, A. V. Lesin, V. O. Muravya, A. V. Mishin

{"title":"First Findings of the Invasive Snow Crab Chionoecetes opilio (O. Fabricius, 1788) (Decapoda, Oregoniidae) in the Eastern Kara Sea","authors":"A. K. Zalota, A. A. Udalov, M. V. Chikina, D. V. Kondar, I. V. Lyubimov, E. V. Lipukhin, I. M. Anisimov, A. V. Lesin, V. O. Muravya, A. V. Mishin","doi":"10.1134/s0001437024700085","DOIUrl":"https://doi.org/10.1134/s0001437024700085","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>During cruise 89 of the R/V Akademik Mstislav Keldysh in September–October 2022, search for the snow crab Chionoecetes opilio were conducted in benthic communities of the Kara Sea using a Sigsby bottom trawl and the TUV Videomodule; as well, plankton samples were collected with a Bongo net in order to record crab larvae in the water column. Single large individuals of snow crab were found for the first time in the eastern Kara Sea, on a transect from the Voronin Trough towards the coast of Taimyr, starting at a depth of 490 m. At the same time, not a single crab larva was caught, which indicates penetration of mature crabs into these areas across the bottom. Conversely, in the western part of the sea and in Blagopoluchiya Bay, large numbers of all size groups of C. opilio on the bottom, as well as crab larvae in the water column, were observed. The differences in the speed and nature of the snow crab invasion are explained by the contrast in the ice conditions in the western and eastern Kara Sea. The snow crab population is likely to spread further in the eastern Kara Sea due to trends towards an increase in the ice-free period in the Arctic.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141531382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphometry of Ice Scours in the Southwestern Kara Sea 喀拉海西南部的冰蚀形态学

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700103

S. V. Maznev, O. V. Kokin, V. V. Arkhipov, E. A. Moroz, A. P. Denisova, R. A. Ananiev, S. L. Nikiforov, N. O. Sorokhtin, S. V. Godetskiy

引用次数: 0

Utilization of Nutrients Entering Through the Bering Strait to the Southwestern Chukchi Sea with the Example of Mineral Phosphorus 以矿物磷为例说明通过白令海峡进入西南楚科奇海的营养物质的利用情况

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700048

Yury I. Zuenko

{"title":"Utilization of Nutrients Entering Through the Bering Strait to the Southwestern Chukchi Sea with the Example of Mineral Phosphorus","authors":"Yury I. Zuenko","doi":"10.1134/s0001437024700048","DOIUrl":"https://doi.org/10.1134/s0001437024700048","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Spatial variations of the nutrient concentration along the northwestward stream from the Bering Sea to the Chukchi Sea are considered for dissolved inorganic phosphorus (DIP) based on data from two surveys conducted in early September 2010 and 2020. The water mass from the Bering Sea has higher DIP than Chukchi Sea water, but in the upper layer its phosphorus is gradually lost due to both mixing with local water and consumption for photosynthesis. In the subsurface layer, the decrease in DIP is prevented by its recycling from degraded organic matter. The fluxes of phosphorus are estimated separately using the balance model with TS analysis, previously used in estuarial studies. Successive DIP utilization along the stream is traced, which forms in the Chukchi Sea two zones of high productivity divided by a wide low-productive zone. Nutrients from the upper layer are utilized within the southwestern Chukchi Sea, resulting in primary production 0.1–0.2 gC m–3 day–1, but the main stock of allochthonous nutrients from the subsurface layer is utilized further downstream (at Wrangel Island or in the northern Chukchi Sea) and results in production of 0.3–0.4 gC m–3 day–1. Localization of high-productive zones is determined by density stratification, which possibly depends on the stream strength: the stronger the advection through Bering Strait, the farther from the strait both zones are located. The recent tendency of strengthening of the stream tends to remove the zones of utilization the nutrients of Pacific origin from the southwestern Chukchi Sea.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141520533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ecosystems of the Siberian Arctic Seas–2023: (Cruise 92 of the R/V Akademik Mstislav Keldysh in the Kara Sea) 西伯利亚北极海域的生态系统--2023 年：（Akademik Mstislav Keldysh 号考察船在喀拉海的第 92 次航行）

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700140

M. V. Flint, S. G. Poyarkov, N. A. Rimsky-Korsakov, N. J. Knivel, A. Yu. Miroshnikov

引用次数: 0

Sources of Freshwater Components in Western Part of the Bering Sea According to Isotope (δ18О, δD) Data 根据同位素（δ18О、δD）数据确定的白令海西部淡水成分来源

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700036

E. O. Dubinina, S. A. Kossova, A. A. Osadchiev, Yu. N. Chizhova, A. S. Avdeenko

{"title":"Sources of Freshwater Components in Western Part of the Bering Sea According to Isotope (δ18О, δD) Data","authors":"E. O. Dubinina, S. A. Kossova, A. A. Osadchiev, Yu. N. Chizhova, A. S. Avdeenko","doi":"10.1134/s0001437024700036","DOIUrl":"https://doi.org/10.1134/s0001437024700036","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The isotope parameters and sources of freshwater components for the subsurface, intermediate, and deep water of the western Bering Sea were estimated using the isotope (δ18О, δD) data for 177 seawater samples. We show that subsurface, dichothermal and, partially, intermediate water (<1000 m) are freshened by regional precipitation. For these waters, the next equations of relations between delta and salinity values were obtained: δ18О = [0.390 ± 0.018]S – 13.521 ± 0.613 and δD = [3.07 ± 0.08]S – 107 ± 2.74. Deeper (1000–2500 m) water is also freshened by precipitation but from the more southern region (≈40°–45° S). The deepest water (2800–4300 m) retain their isotope signal obtained via freshening by Antarctic glacier ice meltwater. The distribution of isotope parameters with the depth shows that vertical mixing at depths of ≈1000–2500 m takes place. This process should influent the redistribution of nutrients, dissolved oxygen, organic matter, and other components in water of the western Bering Sea. The isotope composition of water passing into the Arctic Ocean halocline (S = 33.1) from the Bering Sea are δ18О = –0.61‰ and δD = –5.4‰.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141520532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700012

V. V. Zhmur

引用次数: 0

The Evolution of Redox Conditions in Isolated Water Bodies of Poria Gub Bay and Kandalaksh Coast of the White Sea 白海茯苓湾和坎达拉克什海岸孤立水体中氧化还原条件的演变

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s000143702470005x

N. M. Kokryatskaya, G. N. Losyuk, E. D. Krasnova, S. S. Popov, K. V. Titova, D. A. Voronov

{"title":"The Evolution of Redox Conditions in Isolated Water Bodies of Poria Gub Bay and Kandalaksh Coast of the White Sea","authors":"N. M. Kokryatskaya, G. N. Losyuk, E. D. Krasnova, S. S. Popov, K. V. Titova, D. A. Voronov","doi":"10.1134/s000143702470005x","DOIUrl":"https://doi.org/10.1134/s000143702470005x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The article presents the results of hydrochemical studies of waterbodies with varying degrees of development of anaerobic conditions (up to the appearance of meromixia with sulfide anoxia) in the Porya Guba Bay (Kandalaksha Bay, White Sea, Kandalaksha State Nature Reserve). It is shown that these waterbodies, which are at different stages of isolation from the sea, have a unique hydrological and hydrochemical structure, formed at a certain stage of their evolution. The vertical stratification of water, with the development of all phenomena accompanying stagnation, is more pronounced in the most distant parts of their water area from the sea, where elevated contents of hydrogen sulfide (up to 16.5 mg/L), phosphates, silicon, nitrite, and ammonium nitrogen are noted in bottom anaerobic water. However, the concentrations of all major ions are comparable to those in seawater and hardly chance at all vertically. Analysis of the distribution of the hydrochemical parameters of the distant reaches of Ozerki Lagoon made it possible to conclude that, due to changes that have occurred with this waterbody over the past 90 years, it can now most likely be classified as meromictic.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141531384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative Distribution and Lipid Reserves of the Calanus euxinus (Copepoda) Population in the Black Sea in Late Autumn 2017 2017年深秋黑海桡足类(Calanus euxinus)种群的定量分布和脂质储备

IF 1 4区地球科学

Oceanology Pub Date : 2024-07-02 DOI: 10.1134/s0001437024700073

E. S. Hubareva, B. E. Anninsky

{"title":"Quantitative Distribution and Lipid Reserves of the Calanus euxinus (Copepoda) Population in the Black Sea in Late Autumn 2017","authors":"E. S. Hubareva, B. E. Anninsky","doi":"10.1134/s0001437024700073","DOIUrl":"https://doi.org/10.1134/s0001437024700073","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000Abstract—</h3>The field data on the abundance, biomass, age structure, and lipid reserves of the copepod Сalanus euxinus population in deep pelagial and Crimean shelf regions of the Black Sea in November 2017 were analyzed. The abundance and biomass of this species in deep areas (10.2 ± 0.5 × 103 ind./m2 and 7.3 ± 0.5 g/m2, respectively) were similar to the average annual values for seasons with moderate development of planktivorous jellyfish populations. The average abundance and biomass of the copepods were similar to analogous 2016 values when the jellyfish abundance was twice as low. However, in 2017, the denser aggregations of C. euxinus (12.8 ± 1.0 × 103 ind./m2 and 9.8 ± 0.5 g/m2) were found in the central parts of cyclonic circulations, while in 2016, they were recorded more frequently at the peripheries of cyclonic gyres. A structure of the C. euxinus population also changed. In November 2017, the percentage of copepodites I–IV, females and males, increased, whereas the proportion of copepodites V reduced. These changes likely resulted from a later sampling period in 2017, when the C. euxinus population was ready for active reproduction. Sufficient amounts of lipids in copepodites V, decreased oil sac volumes in females, and increased abundance of males in anticyclonic regions are indicative of more favorable trophic conditions for this part of the C. euxinus population and its higher maturity.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141520535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0