Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya最新文献_第3页

Hydrophysical research in the Kruglaya Bay (Sevastopol) 克鲁格拉亚湾(塞瓦斯托波尔)的水物理研究

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-09-01 DOI: 10.22449/2413-5577-2021-3-107-122

A. Latushkin, A. I. Chepyzhenko, A. V. Prazukin, A. Chepyzhenko, Yury K. Firsov

{"title":"Hydrophysical research in the Kruglaya Bay (Sevastopol)","authors":"A. Latushkin, A. I. Chepyzhenko, A. V. Prazukin, A. Chepyzhenko, Yury K. Firsov","doi":"10.22449/2413-5577-2021-3-107-122","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-3-107-122","url":null,"abstract":"On the basis of two hydrophysical surveys (August 28 and November 14, 2019), the spatial distribution was investigated of temperature, salinity, total suspended matter, dissolved organic matter features, and total suspended matter dynamic activity in the waters of the Kruglaya Bay. The horizontal and vertical distributions of these characteristics were considered. The hydrophysical parameters were measured from a small vessel at anchored stations using Kondor Sounding Complex. The analysis of obtained distributions showed that less saline and more turbid waters were observed in the apex of the bay. The highest content of suspended particles and dissolved organic matter were detected in this water area. An almost uniform stratification of hydrological parameters and total suspended matter concentration were observed in the vertical distribution over the entire water area of the bay. In the vertical dissolved organic matter distribution, an increase under the water surface layer of ~ 1–5 m was observed both in August and in November. This layer was more pronounced in November. The total suspended matter content in the surface water layer in August 2019 was on average twice as high as in November of the same year, and the dissolved organic matter concentration was lower.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129930019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural-climatic and anthropogenic factors determining the self-purification capacity of shallow-water marine ecosystems in relation to reduced nitrogen forms 自然气候和人为因素决定浅水海洋生态系统在减少氮形态方面的自净能力

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-09-01 DOI: 10.22449/2413-5577-2021-3-23-36

E. Sovga, I. Mezentseva, T. Khmara

{"title":"Natural-climatic and anthropogenic factors determining the self-purification capacity of shallow-water marine ecosystems in relation to reduced nitrogen forms","authors":"E. Sovga, I. Mezentseva, T. Khmara","doi":"10.22449/2413-5577-2021-3-23-36","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-3-23-36","url":null,"abstract":"The paper considers natural-climatic and anthropogenic factors that determine differences in the self-purification capacity of the Sevastopol Bay ecosystems (its western, central, eastern parts and the Yuzhnaya Bay) in relation to the reduced nitrogen forms (ammonium and nitrites) by calculating the assimilation capacity. The authors took into account the intensity of the input sources of the studied forms of nitrogen, the rate of excretion from the ecosystem, the dynamic situation in the studied water areas and in the entire bay as well as the location of recreational facilities. For the first time, the factors were assessed that provide additional input of reduced forms of nitrogen associated with hypoxia during summer water stratification in local deepened areas in the upper bottom sediment layer, taking into account their particle size distribution. Further, the authors considered accumulation of organic matter and its destruction due to oxidized nitrogen forms and formation of reduced forms thereof. The currents in the central and southern parts of the Sevastopol Bay were calculated using a hydrodynamic model. The calculation results correspond to the current system in the mentioned water areas of the bay according to in situ data at different wind situations in the region. According to the calculations, it is possible that under certain hydrometeorological situations additional amount of ammonium and nitrites would flow from the Yuzhnaya Bay into the central part of the Sevastopol Bay.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130117710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Peculiarities of Macro- and Microelement Accumulation in Bottom Sediments of the Crimean Coastal Water Areas (the Black Sea) with Different Water Exchange Intensity based on XRF Data 基于XRF数据的克里米亚沿岸(黑海)不同换水强度下底泥宏微量元素积累特征

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-106-120

E. A. Kotelyanets

{"title":"Peculiarities of Macro- and Microelement Accumulation in Bottom Sediments of the Crimean Coastal Water Areas (the Black Sea) with Different Water Exchange Intensity based on XRF Data","authors":"E. A. Kotelyanets","doi":"10.22449/2413-5577-2021-2-106-120","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-106-120","url":null,"abstract":"The paper analyzes content and spatial distribution peculiarities of macro- and microelements in the bottom sediments of Sevastopol bays, Feodosiya Gulf and Kerch Strait. Bottom sediment sampling was performed from 2005 to 2008 as well as in 2015, 2016, and 2018. Concentrations of macro- (Ti, Fe, Mn) and microelements (As, Pb, Zn, Cu, Ni, Co, Cr, V, Sr) were studied by X-ray fluorescence analysis using Spectroscan MAKS-G spectrometer. The maximal content of Cr, Co, Ni, Zn, Pb, Sr exceeding the geochemical background was found in the water areas with difficult water exchange, which include bays of the Sevastopol region under intense anthropogenic influence: the Yuzhnaya Bay, Gollandiya Bay and Kilen-Bay. In the Kazachya Bay, the least polluted in the Sevastopol bay system, the content of Cr, Co, Ni, Zn, Pb, As, Sr also exceeded their geochemical background. As illustrated by the Balaklava Bay, the paper shows the influence of local pollution sources (the Balaklavka River runoff and municipal waste water) on the microelement distribution. Sevastopol bays are characterized by high concentrations of the studied elements in the bottom sediments. In the water areas with active water exchange, i. e. Feodosiya Gulf and Kerch Strait, concentration of the studied elements, except for Ni, Zn and Cr, did not exceed on the average the geochemical background of the open Black Sea shelf areas.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114549330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of the Arctic Oscillation on the Formation of Water Circulation Regimes in the Sector of the North, Norwegian and Barents Seas 北极涛动对北海、挪威海和巴伦支海水循环形成的影响

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-47-64

E. Lemeshko, E. Lemeshko, V. Novitskaya

{"title":"Influence of the Arctic Oscillation on the Formation of Water Circulation Regimes in the Sector of the North, Norwegian and Barents Seas","authors":"E. Lemeshko, E. Lemeshko, V. Novitskaya","doi":"10.22449/2413-5577-2021-2-47-64","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-47-64","url":null,"abstract":"The article studies the influence of wind forcing associated with the Arctic Oscillation on the water circulation regimes in the sector of the World Ocean (65–81.5 N, 0–70 E), which consolidates the North, Norwegian and Barents Seas. The study aims at establishing quantitative patterns of variability of the ocean level and surface geostrophic current velocities depending on the value of the Arctic Oscillation index. In general, the response of the sea level averaged over the ocean sector under consideration is in an antiphase with this index. However, there are periods of mismatch between antiphase fluctuations of the sea level and the Arctic Oscillation index. After 2009, an increase in the amplitude and a decrease in the duration of the phases of the Arctic Oscillation index are noted. The difference between the areas of positive and negative values of sea level anomalies creates a pressure gradient that causes surface geostrophic currents carrying Atlantic waters along the shelf edge eastward in a cyclonic regime (the Arctic Oscillation index is greater than 0) and westward in an anticyclonic regime (the index is less than 0). The article provides estimates of the linear regression coefficients: for the sea level they are ~ 2 cm in the shelf zone and about minus 1 cm in the deep-water part of the sector. Thus, the level difference between the shelf and the deeper part of the considered water area is ~ 3 cm per 1 unit of the Arctic Oscillation index. Estimates of the linear regression coefficients for anomalies of the geostrophic currents velocity were ~ 0.5 cm/s per 1 unit of the index. Analysis of the longterm variability of the steric component of the ocean level showed a better relationship with the interannual variability of the Arctic Oscillation index as compared to the ocean level.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Spectral Relations of Hydro-Optical Characteristics in Coastal Waters of the South Coast of Crimea 克里米亚南海岸沿海水域水文光学特征的光谱关系

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-65-79

V. Mankovsky, E. Mankovskaya

{"title":"Spectral Relations of Hydro-Optical Characteristics in Coastal Waters of the South Coast of Crimea","authors":"V. Mankovsky, E. Mankovskaya","doi":"10.22449/2413-5577-2021-2-65-79","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-65-79","url":null,"abstract":"The article studies interrelations of the beam attenuation coefficient in different spectrum regions and spectral relations of beam attenuation coefficient to the Secchi depth in the coastal waters of the South Coast of Crimea. The data were used of in situ optical measurements obtained in 2008–2014 from a stationary oceanographic platform installed in the coastal waters of the South Coast of Crimea near the village of Katsiveli. According to the measurement data the relation was determined of the beam attenuation coefficient in eight parts of the spectrum in the wavelength range of 416–640 nm to the Secchi depth, which varies from 6 m to 17.5 m. Spectral distributions of the beam attenuation coefficient at different Secchi depths in coastal and deep sea waters were compared. As a result, it is concluded that the relationships between the spectral attenuation coefficient and the Secchi depth in coastal waters are not applicable to deep sea waters. It is shown that the feature of such equations in coastal waters is related to the higher concentration of fine suspended matter in them. Intercorrelation parameters were calculated of beam attenuation coefficients in different spectrum regions in coastal waters. High correlation coefficients make it possible to reconstruct distribution of the attenuation coefficient in a wide spectral range based on measurements at one wavelength in any spectrum region. The optimal spectral region to measure the beam attenuation coefficient is 468–527 nm.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130980346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anthropogenic Impact on the Lithodynamics of the Coastal Zone of the Southern and Western Black Sea Coast (Review) 人为活动对黑海南岸和西部海岸带岩石动力学的影响(综述)

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-5-29

T. Efremova, Y. Goryachkin

{"title":"Anthropogenic Impact on the Lithodynamics of the Coastal Zone of the Southern and Western Black Sea Coast (Review)","authors":"T. Efremova, Y. Goryachkin","doi":"10.22449/2413-5577-2021-2-5-29","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-5-29","url":null,"abstract":"Anthropogenic impact on lithodynamics of the coastal zone changes the natural dynamics of bottom sediments, which leads to increased abrasion and swelling of beaches, activation of landslide processes creating a threat of destruction of the coastal infrastructure. The article aims at providing an overview of the scientific literature on the anthropogenic impact on lithodynamics of the coastal zone of the southern and western coasts of the Black Sea (shores of Romania, Bulgaria and Turkey). The work shows that with all the differences in the natural conditions of the coastal zones of these countries the types of anthropogenic effects they undergo are almost the same. These include: hydrotechnical construction without regard to the impact on the neighbouring coast sections; reduction of solid river flow due to river regulation by reservoirs; construction of capital facilities directly on the beaches; illegal extraction of sand from beaches and river beds; dredging with sale of the extracted material to construction companies; covering of cliffs by various structures; destruction of coastal dunes, etc. The main negative consequences of these actions are reflected in disruption of natural dynamics and shortages of bottom sediments, changes in the coastline, reduced aesthetic attractiveness and accessibility of shores, destruction of coastal ecosystems. The article also provides information on the legislation of these countries regarding environmental management in the coastal zone","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114382485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Hydrological, Hydrochemical and Hydrobiological Studies of Lake Donuzlav (Western Crimea, Black Sea) Based on the Results of Expeditions in 2018 基于2018年考察结果的黑海克里米亚西部多努兹拉夫湖水文、水化学和水生物学研究

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-80-93

V. I. Ryabushko, S. V. Shchurov, N. Kovrigina, M. Popov

{"title":"Hydrological, Hydrochemical and Hydrobiological Studies of Lake Donuzlav (Western Crimea, Black Sea) Based on the Results of Expeditions in 2018","authors":"V. I. Ryabushko, S. V. Shchurov, N. Kovrigina, M. Popov","doi":"10.22449/2413-5577-2021-2-80-93","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-80-93","url":null,"abstract":"The ecosystem of unique Lake Donuzlav has been under significant anthropogenic pressure over a long period. Therefore, to assess the long-term changes occurring in the lake, regular monitoring studies are required. In June and October 2018, complex hydrological, hydrochemical and hydrobiological studies were carried out in the lake water area. Temperature, salinity, pH, dissolved oxygen content, biochemical oxygen demand on the fifth day (BOD5), permanganate oxidizability, concentration of silicon, mineral and organic forms of nitrogen and phosphorus, abundance and biomass of phytoplankton were determined by standard methods. It is shown that the thermohaline structure of waters directly affects the distribution of hydrochemical and hydrobiological indicators. In shallow water, a low oxygen content was recorded due to significant heating and poor water exchange, but no oxygen deficiency was found. Mussel and oyster farms and sewage have a significant impact on the ecological state of the lake. Especially high values of BOD5, oxidizability, maximum concentrations of organic forms of nitrogen and phosphorus were noted in these places. It was found that the biomass of phytoplankton increases and the species diversity decreases with distance from the sea to the apex part of the lake. Potentially toxic alga Dinophisis sacculus is found in small quantities, which does not affect the nutritional value of the molluscs. To assess the long-term changes in the phytoplankton community and its food reserves, regular monitoring studies of Lake Donuzlav are required in different seasons.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128684522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of the Vertical Turbulent Exchange Intensity in the Main Pycnocline Layer in the Prikerchensky Area of the Black Sea Shelf 黑海陆架Prikerchensky地区主斜斜层垂直湍流交换强度的估计

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-94-105

D. Kazakov, A. Samodurov

{"title":"Estimation of the Vertical Turbulent Exchange Intensity in the Main Pycnocline Layer in the Prikerchensky Area of the Black Sea Shelf","authors":"D. Kazakov, A. Samodurov","doi":"10.22449/2413-5577-2021-2-94-105","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-94-105","url":null,"abstract":"The paper investigates the seasonal variability of the vertical turbulent exchange coefficient in the upper stratified layer of the Black Sea. The expedition data used in this work containing information on the microstructure of physical fields were obtained in different hydrological seasons covering the northeastern part of the Black Sea in the Prikerchensky area of the shelf slope. The data were collected during cruises of r/v “Professor Vodyanitsky” in 2016–2019 using “Sigma-1” sounding complex. Based on the semi-empirical methods of assessment of vertical turbulent exchange in the deep-water area of the Black Sea, the dependence of the vertical turbulent diffusion coefficient K on the buoyancy frequency N in the studied layer was established from the flow fluctuation characteristics, with the corresponding graphs and their approximating power-law dependences K  A  N  plotting. In addition, the vertical distribution of the K coefficient with depth was analyzed. Comparative analysis of the obtained dependences with the results of the 1.5D model was carried out. The analysis of the measurement data showed that the results obtained in this work do not contradict the original model. The results can also be used to assess the vertical fluxes of heat, salt and other dissolved chemical and biological substances depending on stratification in the studied part of the Black Sea for different seasons.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129274379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Operational Analysis of Mollusc Valve Activity in Automated Ecological Biomonitoring Systems 自动化生态生物监测系统中软体动物瓣膜活动的操作分析

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-121-130

P. V. Gaisky

{"title":"Operational Analysis of Mollusc Valve Activity in Automated Ecological Biomonitoring Systems","authors":"P. V. Gaisky","doi":"10.22449/2413-5577-2021-2-121-130","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-121-130","url":null,"abstract":"The article describes features of the operational analysis of valve activity of freshwater (Unio pictorum) and marine (Black Sea mussel Mytilus galloprovincialis) bivalve molluscs for created automated systems of bioelectronic environmental control. The studies used measuring data obtained from long-term field and laboratory experiments using instruments developed by the author. The assessment of the mollusc general behavioral characteristics expressed in the dynamics and amplitude of group valve activity as a response to various effects made it possible to determine typical behavioral response models of toxic effects in the aquatic control environment. For the operational analysis, the main statistical indicators are identified, which are used to create software algorithms for automatic decision-making of the environmental biomonitoring system. As these indicators are used first of all the group time-sliding estimates of the synchronism of mollusc reactions, the data of valve activity averaged in different time intervals and the gape level (group and individual). The existence of established models, specified calculated numerical indicators and their permissible limits will ensure the standardization of the approach to detection of toxic factors and further implementation of such biomonitoring systems at control points.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122786290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Storm Conditions on Changes in the Granulometric Composition of Bottom Sediments in the Coastal Zone of the Western Crimea 风暴条件对克里米亚西部海岸带底部沉积物颗粒组成变化的影响

Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya Pub Date : 2021-06-01 DOI: 10.22449/2413-5577-2021-2-30-46

K. Gurov, V. Fomin

{"title":"Influence of Storm Conditions on Changes in the Granulometric Composition of Bottom Sediments in the Coastal Zone of the Western Crimea","authors":"K. Gurov, V. Fomin","doi":"10.22449/2413-5577-2021-2-30-46","DOIUrl":"https://doi.org/10.22449/2413-5577-2021-2-30-46","url":null,"abstract":"The aim of this work is to study the dynamics of bottom sediments granulometric fractions in the Kalamitsky Gulf coastal zone near the Lake Sakskoe bay-bar under influence of storm surge based on the XBeach numerical morphodynamic model. A series of numerical experiments has been carried out, in which the parameters of waves at the seaward boundary of the computational domain changed in time, simulating the passage of a cyclonic atmospheric anomaly over the investigated region. The initial distribution of the sediment volume concentrations in different parts of the underwater coastal slope profile was set based on the results of field observations. The duration of model calculations was 24 h. The quantitative characteristics of the spatial distribution of various bottom sediments fractions, sediments median diameter and values of bottom deformations were obtained. It has been established that the main morphodynamic changes occurs in the area 0–120 m from the shoreline and are limited by the 3.5 m isobath. It was noted that the maximum changes in the relief of the coastal zone and the upper section of the underwater coastal slope occur during the development and attenuation phases of a storm. In the same time intervals an intensive redistribution of sandy material is observed. It has been established that, with a change in the parameters of wind waves in time at the seaward boundary, the scales of sand material redistribution and deformations of the coastal zone are higher than in the experiment when the direction of the waves does not change with time at the seaward boundary of the computational domain.","PeriodicalId":332238,"journal":{"name":"Ekologicheskaya bezopasnost' pribrezhnoy i shel'fovoy zon morya","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129953894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0