Bulletin of Geography-Physical Geography Series最新文献_第5页

Reconstructing the channel shifting pattern of the Torsa River on the Himalayan Foreland Basin over the last 250 years 近250年来喜马拉雅前陆盆地托尔萨河河道移动模式的重建

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0007

U. Saha, Soma Bhattacharya

{"title":"Reconstructing the channel shifting pattern of the Torsa River on the Himalayan Foreland Basin over the last 250 years","authors":"U. Saha, Soma Bhattacharya","doi":"10.2478/bgeo-2019-0007","DOIUrl":"https://doi.org/10.2478/bgeo-2019-0007","url":null,"abstract":"Abstract The varied physiography, incidences of high seasonal discharge, influences of neo-tectonic activity and the young geological foundation with less consolidated cohesive and non-cohesive sediment have left the Himalayan foreland basin a formidable ground, where silt-laden rivers tend to migrate frequently. A set of maps prepared after 1764, space photographs captured in 1970 and current satellite images from 2015 and 2017 were studied to reconstruct the fluvial dynamics of the Torsa River on the foreland basin of Sikkim-Bhutan Himalaya considering a time span of nearly 250 years. Evidence collected from colonial literature, the above-mentioned satellite images and a field survey, were combined to verify results taken from the old maps used as the base of the study. The application of satellite remote sensing and analysis of the topographic signatures of the palaeo-courses in the form of the palaeo-levee, abandoned courses and ox-bow lakes were the major operational attributes in this study. As a consequence of the channel migration of Torsa River since 1764, the historical floodplain of Torsa has been topographically marked by beheaded old distributaries, a misfit channel system and the presence of abandoned segments. Morphometric changes in the old courses, major flood events and neo-tectonic activity guided an overall trend of channel migration eastwards and has led to a couple of channel oscillation events in the Torsa River over the last 250 years. The mechanism of the avulsion events was thoroughly driven by sedimentation-induced channel morphometric changes and occasional high discharge.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77192357","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: 10

Monitoring soil moisture dynamics in multilayered Fluvisols 多层河流土壤水分动态监测

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0009

J. Dezső, S. Czigány, G. Nagy, E. Pirkhoffer, M. Słowik, Lóczy Dénes

{"title":"Monitoring soil moisture dynamics in multilayered Fluvisols","authors":"J. Dezső, S. Czigány, G. Nagy, E. Pirkhoffer, M. Słowik, Lóczy Dénes","doi":"10.2478/bgeo-2019-0009","DOIUrl":"https://doi.org/10.2478/bgeo-2019-0009","url":null,"abstract":"Abstract The identification of drought-sensitive areas (DSAs) in floodplain Fluvisols of high textural pedodiversity is crucial for sustainable land management purposes. During extended drought periods moisture replenishment is only available by capillary rise from the groundwater. However, moisture flux is often hindered by capillary barriers in the interface between layers of contrasting textures. The results of HYDRUS-1D simulations run on multilayered soil profiles were integrated into textural maps to determine the spatial distribution of water dynamics on the floodplain of the Drava River (SW Hungary). Model runs and field data revealed limited moisture replenishment by capillary rise when both contrasting textural interfaces and sandy layers are present in the profile. By implementing these textural and hydraulic relations, a drought vulnerability map (DSA map) of the operational area of the Old Drava Programme (ODP) was developed. According to the spatial distribution of soils of reduced capillary rise, 52% of the ODP area is likely threatened by droughts. Our model results are adaptable for optimisation of land- and water-management practices along the floodplains of low-energy and medium-sized rivers under humid continental and maritime climates.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89897030","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: 8

The morphogenesis of erosional valleys in the slopes of the Drwęca valley and the properties of their colluvial infills Drwęca河谷坡面侵蚀谷的形态形成及其崩塌填充物的性质

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0001

T. Karasiewicz, Lucyna Tobojko, M. Świtoniak, Kinga Milewska, Sebastian Tyszkowski

{"title":"The morphogenesis of erosional valleys in the slopes of the Drwęca valley and the properties of their colluvial infills","authors":"T. Karasiewicz, Lucyna Tobojko, M. Świtoniak, Kinga Milewska, Sebastian Tyszkowski","doi":"10.2478/bgeo-2019-0001","DOIUrl":"https://doi.org/10.2478/bgeo-2019-0001","url":null,"abstract":"Abstract The article characterises Late Glacial and Holocene deposits and provides a morphometric analysis of erosional and denudation valleys in the slope and terraces of the Drwęca Valley near Jajkowo village, a few kilometres east of Brodnica. A detailed field mapping was used to identify in detail two such forms within the western slope of the Drwęca Valley. Based on the results, it was found that the longitudinal profiles of these forms are not aligned (with an inclination of approximately 4˚). The slopes of valley I are asymmetrical, with the southern slope being milder than the northern exposure, which is not the case with form II. Form I is narrower and has a V-shaped cross profile, while II is wider and has a trough-shaped profile cross profile. The side valleys were initially cut by the flow of what were most probably meltwaters and precipitation water from the moraine plateau, then the erosion stopped and the valleys gradually filled and widened mainly as a result of rinsing and mass movements, which may have been increased by man. Currently, forestry use is significantly reducing the activity of slope processes and rinsing. The sediments that fill the bottoms of these forms are usually consist of silt or sandy lithofacies with massive, streaky or deformation horizons. They are characterised by a significant enrichment in organic matter which is typical for colluvial deposits of young glacial areas. The relatively high pH values result from the investigated erosional forms intersecting into sediments rich in calcium carbonate. Moreover, groundwater flowing from the moraine plateau may also be the source of basic components.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91183143","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: 2

Long-term variability of water temperature and salinity at the Polish coast 波兰海岸水温和盐度的长期变化

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0008

M. Świątek

{"title":"Long-term variability of water temperature and salinity at the Polish coast","authors":"M. Świątek","doi":"10.2478/bgeo-2019-0008","DOIUrl":"https://doi.org/10.2478/bgeo-2019-0008","url":null,"abstract":"Abstract The variability of surface water temperature and water salinity at the south coast of the Baltic in the years 1950–2015 was studied in the article. To that aim, monthly surface water temperature values in Świnoujście, Międzyzdroje, Kołobrzeg (from 1957), Władysławowo, Hel and Gdynia were used, as well as monthly water salinity values in Międzyzdroje, Władysławowo, Hel and Gdynia, all obtained from IMGW-PIB (Institute of Meteorology and Water Management – National Research Institute). Linear regression and Pearson’s simple correlation coefficient of individual monthly, seasonal and annual series of temperature and salinity values over time (in subsequent years) were used to analyse the temporal changes of the examined parameters. In the analysed period a rise in the annual water temperature was recorded in Międzyzdroje, Władysławowo, Hel and Gdynia, while the extent of the changes increased towards the east. There were also positive trends in temperature values in individual months. At the same time, there was a decrease in water salinity, which was also found to be most distinct in the eastern part of the coast. In Władysławowo, Hel and Gdynia, statistically significant drops occurred in nearly all months. During the months featuring statistically insignificant trends, the observed change trends were also negative. Concurrent water temperature increases and water salinity decreases consequently caused a decline in sea water surface density at the Polish Baltic coast.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76185724","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

Land use changes and landscape pattern dynamics of a peatland area under diversified human impact: the Grójec Valley (Central Poland) 多种人类活动影响下泥炭地土地利用变化与景观格局动态:Grójec山谷(波兰中部)

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0002

B. Glina, Marcin Sykuła, Łukasz Mendyk

引用次数: 6

Understanding a continuous inland aeolian deposition: a closer look into a chronological and sedimentary record of the north-eastern European Sand Belt 了解持续的内陆风成沉积:深入了解欧洲东北部砂带的年代和沉积记录

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0003

E. Kalińska

引用次数: 4

Geostrophic wind variability in the 50–60°N zone over Europe: the role of mid-troposphere atmospheric circulation macro-forms 欧洲上空50-60°N地区地转风变率:对流层中大气环流宏观形式的作用

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0004

Michał Marosz, K. Kożuchowski

{"title":"Geostrophic wind variability in the 50–60°N zone over Europe: the role of mid-troposphere atmospheric circulation macro-forms","authors":"Michał Marosz, K. Kożuchowski","doi":"10.2478/bgeo-2019-0004","DOIUrl":"https://doi.org/10.2478/bgeo-2019-0004","url":null,"abstract":"Abstract Circulation in the mid-troposphere in moderate and high latitudes of the Northern Hemisphere can be characterised by the Vangenheim-Girs (VG) circulation macro-forms. The aim of the research was to analyse the VG macro-forms as a factor determining the general characteristics of the atmospheric circulation in mid-troposphere in the Euro-Atlantic region and low-troposphere airflow characteristics in the profile (zonal belt) crossing Central Europe from Ireland to Kazan in Russia (5°30’W–44°00’E). Alongside the VG macro-form calendar, ERA-INTERIM data were used. The utilised meteorological variables comprised 500hPa geopotential height, SLP and air temperature at 995 sigma level. The temporal scope of the research was 35 years (1981–2015) and the resolution was 24h (12.00 UTC). The circulation in the low-troposphere was characterised by the geostrophic wind vector characteristics directly resulting from SLP and air temperature fields. Subsequently, derived indices (e.g. wind direction stability) were used. The presented results indicate that the variability of anemological conditions at SLP in the area of 50–60°N over Europe is in direct connection with the mid-troposphere circulation features. The differences are statistically significant across nearly the entire research area. This includes the reversal of the dominant air flow direction in some areas. The greatest variability in geostrophic wind characteristics due to W, E and C VG macro-forms is revealed in the central and eastern part of the 50–60°N zone – between the southern Baltic Sea and the western border of Russia.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82284000","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

Subaqueous geomorphology: options, tasks, needs 水下地貌学:选择、任务、需求

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2019-06-18 DOI: 10.2478/bgeo-2019-0006

S. Rudowski, R. Wróblewski, J. Dworniczak, K. Szefler, B. Hac, Łukasz G. Gajewski

引用次数: 1

Mineralogy and deformation structures in components of clastic sediments from the Morasko meteorite lake (Poland) 波兰Morasko陨石湖碎屑沉积物组分的矿物学和变形构造

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2018-12-01 DOI: 10.2478/bgeo-2018-0018

A. Duczmal-Czernikiewicz, A. Choiński, M. Ptak, A. Muszyński

引用次数: 1

An attempt at a typology of karst lakes in the Połaniec Basin (Małopolska Upland) Połaniec盆地(Małopolska高地)喀斯特湖泊类型学的尝试

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2018-12-01 DOI: 10.2478/bgeo-2018-0016

M. Stachura, Dariusz Wieczorek, A. Zieliński

{"title":"An attempt at a typology of karst lakes in the Połaniec Basin (Małopolska Upland)","authors":"M. Stachura, Dariusz Wieczorek, A. Zieliński","doi":"10.2478/bgeo-2018-0016","DOIUrl":"https://doi.org/10.2478/bgeo-2018-0016","url":null,"abstract":"Abstract The main goal of the paper is to attempt a typology of karst lakes in the Połaniec Basin (Małopolska Upland). The typology was conducted on the basis of a dependence analysis of several essential morphometric parameters of lake basins. The considered data comprised 23 lakes with respect to 15 morphometric features. The correlation analysis, mainly of a group of lakes located in single karst sinkholes, revealed that the length and width of basins are strongly correlated. It is also noticeable that basin shape determines lake volume, even though pools of similar water volume may differ in area. Moreover, an increase in the maximum depth of basins does not necessarily imply any increase in volume. Likewise, there is no prevalent dependence between basin area and maximum depth. The cluster analysis, among reasonable indications, generally identified a division of the considered lakes into two sets. One of the sets comprises Duży Staw and Dziki Staw, while the other consists of all the other lakes. Less frequent divisions into three indicated Duży Staw, Dziki Staw, and Czwarty Staw as the leading lakes. Divisions into 19–22 clusters were also suggested, but this does not seem to be reliable. As a consequence, the cluster analysis showed that Duży Staw and Dziki Staw stand out the most from the other lakes. This remainder constitutes rather close to each other, but not an ideally uniform group of lakes.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87825342","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: 5