IF 0.7 4区地球科学

Baltica Pub Date : 2018-09-25 DOI: 10.5200/BALTICA.2017.30.11

J. Tylkowski

{"title":"The temporal and spatial variability of coastal dune erosion in the Polish Baltic coastal zone","authors":"J. Tylkowski","doi":"10.5200/BALTICA.2017.30.11","DOIUrl":"https://doi.org/10.5200/BALTICA.2017.30.11","url":null,"abstract":"The study looked at the temporal and spatial variability of dune erosion in the Polish Baltic coastal zone in the period 1972–2008. The dynamics of coastal dune erosion in the area are presented in relationship to the main hydro-meteorological factors: storm surges and types of atmospheric circulation. The greatest destruction of the coastal dunes in Poland was observed on sandbar sections, where the erosion was over 100,000 m3 per 1 km, causing dune baseline retreat by several tens of meters. The main causes of this considerable coastal erosion are the sudden rise of the sea level and the waves during extreme storm surges, when the loss of dune sediment across the entire Polish Baltic Sea coastal zone can reach about 400,000 m3. These extremely erosive storm surges are particularly generated by cyclonic atmospheric circulation, which accounts for more than 52% of such surges from the north-west, north, and west. It was also found that sea level increases of more than 1 meter (about 602 cm) above the mean sea level (about 500 cm) can result in significant erosion of coastal dunes in Poland (>100,000 m3). However, there is a relationship between the intensity of the dune erosion and sea level. The results of the present study could be applied to studies of Baltic coastal dunes functioning in the lagoon-spit coastline, especially in the stretch from Estonia to Germany.","PeriodicalId":55401,"journal":{"name":"Baltica","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47576375","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: 12

Coastal sediment balance in the eastern part of the Gulf of Riga (2005–2016) 里加湾东部沿海沉积物平衡(2005-2016)

IF 0.7 4区地球科学

Baltica Pub Date : 2018-09-25 DOI: 10.5200/BALTICA.2017.30.10

J. Lapinskis

引用次数: 7

Seismic architecture of the tip of the Hel Peninsula, Poland 波兰赫尔半岛顶端的地震结构

IF 0.7 4区地球科学

Baltica Pub Date : 2018-06-15 DOI: 10.5200/BALTICA.2018.31.06

Maria Rucińska-Zjadacz, S. Rudowski, R. Wróblewski

引用次数: 1

Eutrophication and effects of algal bloom in the south–western part of the Curonian Lagoon alongside the Curonian Spit 库尔斯沙嘴附近库尔斯泻湖西南部富营养化和藻华的影响

IF 0.7 4区地球科学

Baltica Pub Date : 2018-06-15 DOI: 10.5200/BALTICA.2018.31.01

S. Aleksandrov, A. Krek, E. Bubnova, A. Danchenkov

{"title":"Eutrophication and effects of algal bloom in the south–western part of the Curonian Lagoon alongside the Curonian Spit","authors":"S. Aleksandrov, A. Krek, E. Bubnova, A. Danchenkov","doi":"10.5200/BALTICA.2018.31.01","DOIUrl":"https://doi.org/10.5200/BALTICA.2018.31.01","url":null,"abstract":"The Curonian Lagoon is the largest coastal lagoon of the Baltic Sea. The Curonian Lagoon is a hypereutrophic water body beset with two major problems: eutrophication and algal blooms. Biological and chemical data for the study of water eutrophication and algal blooms were collected from 4 sampling points in the coastal and off-shore areas at distances of 1 km and 4–5 km from the Curonian Spit during the period from April 2007 to November 2016. The ratio of mineral nitrogen/phosphorus forms created conditions for regular Cyanobacteria hyperblooms during the summer and early autumn. Such blooms are followed by an increase in the concentration of ammonia nitrogen, pH and BOD5, their values exceeding the threshold limits for fishery water reservoirs. A distinct peak of chlorophyll a concentration was observed in the period of freshwater Cyanobacteria hyperbloom from July to September or October. During the “hyperbloom” of Cyanobacteria, their accumulation and decomposition, which was caused by a constant wind direction, also led to the local oxygen deficit and fish mortality in the coastal zone. Chlorophyll a concentration was always at the level of intensive bloom (10–100 μg/l) and over the period of 6 years (2008, 2010, 2011, 2012, 2014, 2016) it reached the hyperbloom state (above 100 μg/l). Water temperature appeared to be one of the key factors determining seasonal and long–term variability in phytoplankton abundance and, therefore, the level of eutrophication in the Curonian Lagoon.","PeriodicalId":55401,"journal":{"name":"Baltica","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48106351","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: 12

Numerical simulation of dynamics of sediments disposed in the marine coastal zone of the south-eastern Baltic 波罗的海东南部海洋海岸带沉积物动力学的数值模拟

IF 0.7 4区地球科学

Baltica Pub Date : 2018-06-15 DOI: 10.5200/BALTICA.2018.31.02

A. Sokolov, B. Chubarenko

{"title":"Numerical simulation of dynamics of sediments disposed in the marine coastal zone of the south-eastern Baltic","authors":"A. Sokolov, B. Chubarenko","doi":"10.5200/BALTICA.2018.31.02","DOIUrl":"https://doi.org/10.5200/BALTICA.2018.31.02","url":null,"abstract":"Three dumping sites located at the south-eastern part of the Baltic Sea at shallow depths near the shore of the Sambian Peninsula are considered. The first and second ones are located south and north of the Vistula Lagoon inlet, and are used now for disposing dredged material extracted from the Kaliningrad Seaway Canal. The third dumping site is located near the northern shore of the Sambian Peninsula, east of Cape Gvardeyskiy and assigned for disposing the dredged material extracted from the fairway to the Pionerskiy Port located nearby. All three dumping sites are located either in front of or not far from the eroded segments of the shore. The question behind the study is: Is it possible that disposed material is naturally transported from the damping site to the shore and accumulates there to protect it from erosion? A numerical hydrodynamic transport 3D model (MIKE) was used to model sediment transport under different wind actions. The winds with the speed stronger than 15 m/s wash out disposed material completely from the dumping site and spread it over a wide area with a negligible layer thickness. Winds of about 7–10 m/s transport material along the shore at a distance of a few kilometres; that may be useful for shore protection. Winds with a speed of about 5 m/sec or less do not lead to resuspension of sediments. The first location of the dumping site looks very ineffective for potential protection of the shore nearby. On the other hand, the second and especially the third locations are favourable for the transport of disposed material to the shore; the most favourable conditions are at onshore or alongshore currents.","PeriodicalId":55401,"journal":{"name":"Baltica","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48207562","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: 5

Geological mapping of Lithuanian marine areas of the Baltic Sea – reactivated 波罗的海立陶宛海洋区域的地质测绘-重新启动

IF 0.7 4区地球科学

Baltica Pub Date : 2018-06-15 DOI: 10.5200/BALTICA.2018.31.08

A. Damušytė, N. Blažauskas

引用次数: 1

Atmospheric forcing of upwelling along the south-eastern Baltic coast 沿波罗的海东南海岸的上升流的大气强迫

IF 0.7 4区地球科学

Baltica Pub Date : 2018-06-15 DOI: 10.5200/BALTICA.2018.31.07

E. Bednorz, Bartosz Czernecki, Marek Półrolniczak, A. Tomczyk

{"title":"Atmospheric forcing of upwelling along the south-eastern Baltic coast","authors":"E. Bednorz, Bartosz Czernecki, Marek Półrolniczak, A. Tomczyk","doi":"10.5200/BALTICA.2018.31.07","DOIUrl":"https://doi.org/10.5200/BALTICA.2018.31.07","url":null,"abstract":"The meteorological forcing on the occurrence of upwelling along the south-eastern Baltic Sea coast (Lithuanian-Latvian sector) is analysed in this study. The sea level pressure patterns and the locations of pressure centres inducing and inhibiting upwelling were identified. The research was performed for the years 1982–2017, for the months of May–September, when the sea waters are thermally stratified and the phenomenon is detectable. The frequency of upwelling is the highest in June (approximately 15%), July and August (11–13%) and the lowest in September (7%). The central and northern part of the Lithuanian–Latvian coast is most favourable for upwelling occurrence (frequency up to 20% in summer months). The main features of the sea level pressure patterns that induce upwelling in the research area are positive pressure anomalies spreading over Northern Europe and the Norwegian Sea, while negative anomalies encompass Southern Europe. Airflow around the anticyclonic centres gives a north-eastern component to the wind direction over the Lithuanian-Latvian shore. Two circulation types were recognized as inducing the occurrence of upwelling along the Lithuanian–Latvian coast. Both of them are characterized by the anticyclonic centres located west or northwest of the study area and intensify the northerly or north-easterly airflow over the research area. Different pressure patterns with the negative anomalies of sea level pressure spreading over the North Sea and the positive anomalies underlying Central Europe inhibit upwelling along the Lithuanian–Latvian coast. Such pressure conditions, bring about the western airflow component. More constant western winds restrain the upwelling process and bring about normal thermal stratification of coastal waters. A detailed analysis allowed the recognition of two circulation types inhibiting coastal upwelling in the study area. They reveal dipole patterns of sea level pressure anomalies, but the two inhibiting patterns differ substantially in the intensities and locations of the pressure centres and in wind conditions.","PeriodicalId":55401,"journal":{"name":"Baltica","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47318733","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: 5

Holocene development of the Marker Wadden area, Lake IJssel (the former Zuider Zee),The Netherlands 荷兰伊泽尔湖Marker Wadden地区的全新世开发

IF 0.7 4区地球科学

Baltica Pub Date : 2018-06-15 DOI: 10.5200/BALTICA.2018.31.03

S. Troelstra, C. Laban, M. Prins, K. Beets, Maarten van Diepen, L.P.A. Grooteman, B. Hageman, Leonie Portanger, Sylvain Rumping, Archana Sadhoeram

引用次数: 2

Coastal dynamics of the eastern Gulf of Finland, the Baltic Sea: toward a quantitative assessment 波罗的海芬兰湾东部沿海动态:走向定量评估

IF 0.7 4区地球科学

Baltica Pub Date : 2018-06-15 DOI: 10.5200/BALTICA.2018.31.05

A. Sergeev, D. Ryabchuk, V. Zhamoida, I. Leont’yev, A. Kolesov, O. Kovaleva, K. Orviku

引用次数: 11

Seismicity of the East Baltic region after the Kaliningrad earthquakeson 21 September 2004 2004年9月21日加里宁格勒地震后东波罗的海地区的地震活动性