Acta Hydrologica Slovaca最新文献_第4页

Characterization of leakage water flows in the subsoil of Beni Haroun dam by hydrogeological approach 用水文地质方法表征贝尼哈龙大坝底土渗漏水流

Acta Hydrologica Slovaca Pub Date : 2023-06-06 DOI: 10.31577/ahs-2023-0024.01.0003

L. Chebbah, A. Kabour

引用次数: 0

Impact of the biochar fraction sizes on the selected hydrophysical properties of silty loam soil 生物炭粒径对粉质壤土水物理特性的影响

Acta Hydrologica Slovaca Pub Date : 2023-06-06 DOI: 10.31577/ahs-2023-0024.01.0002

Lucia Toková, Natália Botková, J. Vitková, Lenka Botyanszká, K. Skic, Angelika Gryta

{"title":"Impact of the biochar fraction sizes on the selected hydrophysical properties of silty loam soil","authors":"Lucia Toková, Natália Botková, J. Vitková, Lenka Botyanszká, K. Skic, Angelika Gryta","doi":"10.31577/ahs-2023-0024.01.0002","DOIUrl":"https://doi.org/10.31577/ahs-2023-0024.01.0002","url":null,"abstract":"Biochar is a widely known soil amendment. In the presented study, we aimed to evaluate the effect of biochar produced from Swedish willow ((Salix schwerinii x S. viminalis) x S. viminalis), ground into three different size fractions (<125µm, 125µm–2 mm and >2 mm) on selected hydrophysical properties of silty loam soils. Biochar was applied in the amount of 1.5% per weight of dry matter and the results were compared with pure silty loam soil (control). Data of biochar application impact on the selected hydrophysical properties of silty loam soil were statistically analyzed. In general, our results suggest that applied different size fractions of biochar does not have a statistically significant effect on particle density, however does have an effect on bulk density, porosity and saturated hydraulic conductivity of silty loam soil. With regard to bulk density, a statistically significant decrease (p<0.05) was observed compared to the control and it ranged from 4.18 to 8.13% from the smallest to the largest biochar fraction. The decrease of bulk density further led to a statistically significant increase (p<0.05) in porosity of all three treatments. Saturated hydraulic conductivity tended to increase as the size fraction of the biochar used was progressively reduced. This increase ranged from 63.77% (for biochar with size fraction >2 mm) to 112.42% (for biochar with size fraction <125µm) compared to pure silty loam soil (control).","PeriodicalId":321483,"journal":{"name":"Acta Hydrologica Slovaca","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129550435","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

The influence of land use change on transport of water and energy in ecosystem and climate change 土地利用变化对生态系统和气候中水、能运输的影响

Acta Hydrologica Slovaca Pub Date : 2023-06-06 DOI: 10.31577/ahs-2023-0024.01.0001

V. Novák

引用次数: 0

Design of detention spaces in the Ulička and Ublianka River catchment 乌利<e:1>卡河和乌布连卡河集水区的拘留空间设计

Acta Hydrologica Slovaca Pub Date : 2022-12-08 DOI: 10.31577/ahs-2022-0023.02.0032

A. Šoltész, Martin Orfánus, J. Mydla

引用次数: 0

The generation of surface runoff in laboratory conditions using two portable rainfall simulators – an experimental study 在实验室条件下使用两个便携式降雨模拟器产生地表径流-一项实验研究

Acta Hydrologica Slovaca Pub Date : 2022-12-08 DOI: 10.31577/ahs-2022-0023.02.0028

M. Danáčová, M. Danko, R. Výleta, K. Hlavčová

{"title":"The generation of surface runoff in laboratory conditions using two portable rainfall simulators – an experimental study","authors":"M. Danáčová, M. Danko, R. Výleta, K. Hlavčová","doi":"10.31577/ahs-2022-0023.02.0028","DOIUrl":"https://doi.org/10.31577/ahs-2022-0023.02.0028","url":null,"abstract":"The use of laboratory methods in soil water erosion studies and rainfall simulation experiments has recently been considered more important because of the many advantages in controlling rainfall-runoff processes and sediment transport. In a laboratory study, rainfall simulation experiments (one alone and two identical rainfall simulators connected in a series) were focused on an analysis of the impact of the size of the irrigated area on the temporal distribution and volume of the surface runoff and the amount of eroded soil material. The experiments were conducted on a disturbed soil sample exposed to quasi-continuous 60-minute simulated rainfall events with an intensity of 2.7 mm min -1 . The two experiments were carried out on slopes of different lengths of 0.25 m (irrigated area: 0.0625 m 2 ) and 0.5 m (irrigated area: 0.125 m 2 ). The results showed the effects of the size of the irrigated area on surface runoff generation and changes in the soil structure, sediment concentration, and amount of soil loss. Knowledge of the rate of changes in the volume of the surface runoff and soil loss with respect to the size of the irrigated area in the laboratory conditions and subsequent generalization of the results provides essential information, which is irreplaceable for the preparation of field measurements and obtaining essential calibration and validation data for erosion and rainfall-runoff modelling.","PeriodicalId":321483,"journal":{"name":"Acta Hydrologica Slovaca","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126220079","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

Three-dimensional numerical modeling of water temperature distribution in the Rozgrund Reservoir, Slovakia 斯洛伐克Rozgrund水库水温分布的三维数值模拟

Acta Hydrologica Slovaca Pub Date : 2022-12-08 DOI: 10.31577/ahs-2022-0023.02.0035

S. Okhravi, M. Sokáč, Y. Velísková

{"title":"Three-dimensional numerical modeling of water temperature distribution in the Rozgrund Reservoir, Slovakia","authors":"S. Okhravi, M. Sokáč, Y. Velísková","doi":"10.31577/ahs-2022-0023.02.0035","DOIUrl":"https://doi.org/10.31577/ahs-2022-0023.02.0035","url":null,"abstract":"The Rozgrund water reservoir is one of the oldest reservoirs of the water supply system in the vicinity of Banská Štiavnica. In the past, it was one of the important reservoirs supplying the population with drinking water. Knowing the spatial and temporal variations of water temperature in the reservoir is the primary step to investigate and model water quality. Therefore, the present study was planned to simulate water temperature distribution in the Rozgrund Reservoir by incorporating atmospheric and bathymetric conditions using MIKE 3 FM model and took a step forward to model extreme hydrological and meteorological events impacts. The simulations were performed for July 2022 and the model provided 3D visualization of water temperature variations and corresponding temporal differences during the entire simulated period. The results revealed that the Rozgrund Reservoir experienced temperature stratification (i.e. non-isothermal layers) in the period of simulation when the initial temperature was given to the model, while the constant initial temperature condition needs a long time to reproduce water temperature stratification. In addition, this study assessed the impacts of high inflows on patterns of current flows and water temperature throughout the Rozgrund Reservoir. The present work has implications for improving the understanding of changes in water temperature distribution in the Rozgrund Reservoir and similar reservoirs and supports further works, as well.","PeriodicalId":321483,"journal":{"name":"Acta Hydrologica Slovaca","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127595856","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

Dispersion process in conditions of real sewer systems – in situ experiments 真实下水道系统条件下的分散过程-现场试验

Acta Hydrologica Slovaca Pub Date : 2022-12-08 DOI: 10.31577/ahs-2022-0023.02.0033

M. Sokáč, Y. Velísková

{"title":"Dispersion process in conditions of real sewer systems – in situ experiments","authors":"M. Sokáč, Y. Velísková","doi":"10.31577/ahs-2022-0023.02.0033","DOIUrl":"https://doi.org/10.31577/ahs-2022-0023.02.0033","url":null,"abstract":"A general assumption of most current models used to simulate flow in sewer systems (pipes) is that the sewers are considered as prismatic channels. However, in real conditions there are many factors, which affect the real flow. One of them is the occurrence of the sediments and deposits in sewer pipes, which significantly changes the flow conditions, as well as the dispersion process in sewer systems by creation of “dead zones”. Paper describes the effects of these zones on hydrodynamic dispersion process, which are particularly noticeable in hydraulic conditions of low flow rates in sewer system (sanitary, flow rates during dry period without rain …). In the study, there were applied two types of tracers and both used substances give identical results. Experimental results show that even though sewer pipes are considered as prismatic hydraulic channels, in the real conditions some irregularities resulted with dead zones creation are presented. Their influence on the mass concentration time-course shape is depending on the sediment layer thickness. Gaussian approximation of the one-dimensional advection dispersion equation for instantaneous pollution entry is not suitable for the sewer pipes with sediments occurrence. In case of sediments presence, the GEV and Gumbel’s approximation function looks to be more accurate.","PeriodicalId":321483,"journal":{"name":"Acta Hydrologica Slovaca","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114993003","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

Improvement of runoff simulation efficiency using satellite soil moisture data for typical monthly runoff regimes in Austria 利用卫星土壤水分数据提高奥地利典型月度径流模拟效率

Acta Hydrologica Slovaca Pub Date : 2022-12-08 DOI: 10.31577/ahs-2022-0023.02.0029

M. Kuban, J. Parajka, J. Szolgay, S. Kohnová, K. Hlavčová, P. Sleziak, Adam Brziak

引用次数: 0

Assessment of meteorological and hydrological drought using drought indices: SPI and SSI in eastern Slovakia 利用干旱指数评估气象和水文干旱:斯洛伐克东部的SPI和SSI

Acta Hydrologica Slovaca Pub Date : 2022-12-08 DOI: 10.31577/ahs-2022-0023.02.0030

T. Soľáková, M. Zeleňáková, V. Mikita, H. Hlavatá, D. Simonová, Hany Abd Elhamid

{"title":"Assessment of meteorological and hydrological drought using drought indices: SPI and SSI in eastern Slovakia","authors":"T. Soľáková, M. Zeleňáková, V. Mikita, H. Hlavatá, D. Simonová, Hany Abd Elhamid","doi":"10.31577/ahs-2022-0023.02.0030","DOIUrl":"https://doi.org/10.31577/ahs-2022-0023.02.0030","url":null,"abstract":"The current article presents a one-dimensional frequency analysis of historical drought events in the years 1972 to 2014 in the eastern part of Slovakia. Two physical drought types: meteorological and hydrological are classified by SPI – standardized precipitation index and SSI – standardized streamflow index. These indexes have the same mathematical calculation, the difference is only in the input initial monitored data collected from seven rain gauge stations and seven river stations. The most appropriate theoretical probability distribution of selected data is performed using the Kolmogorov-Smirnov test, which is done in EasyFitt program. The basic parameters of meteorological and hydrological drought are determined by the application of the RUN method. One – dimensional frequency analysis of two physical droughts is created for a purpose of estimating the probability of their occurrence in time and identifying the spatial vulnerability of this area. The main benefit of this work is the identification of the average return time of drought events. On average we can expect a moderate meteorological drought in 18.14 to 36.8 months and a hydrological drought in 26 to 60 months.","PeriodicalId":321483,"journal":{"name":"Acta Hydrologica Slovaca","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115932650","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

Analysis of the water temperature in the Litava River 利塔瓦河水温分析

Acta Hydrologica Slovaca Pub Date : 2022-12-08 DOI: 10.31577/ahs-2022-0023.02.0034

Z. Bajtek, P. Pekárová, Katarína Jeneiová, J. Ridzoň

{"title":"Analysis of the water temperature in the Litava River","authors":"Z. Bajtek, P. Pekárová, Katarína Jeneiová, J. Ridzoň","doi":"10.31577/ahs-2022-0023.02.0034","DOIUrl":"https://doi.org/10.31577/ahs-2022-0023.02.0034","url":null,"abstract":"River water temperature is important in many environmental applications, hydrology, and ecology research. It mainly depends on several parameters of water bodies such as streamflow, groundwater interactions, and their surrounding atmosphere. It has been correlated with air temperature as a substitute due to the ease of applicability for rivers with some limitations over detailed meteorological data. An evaluation of integrated river water temperature and streamflow fluctuations is proposed to evidence biological activity, chemical specimen, oxygen solubility, self-purification capacity of a river system, and variation of flows due to hydro-climatic changes. The possibility of predicting the river water temperature at various locations over a river basin is vital for water quality management. Modelling of river water temperature is usually based on a suitable mathematical model and field measurements of various atmospheric factors. The aim of the study is the analysis and subsequent simulation of monthly and daily water temperatures in the Litava River at the Plášťovce station. First of all, the statistical analysis of a series of daily values of Litava water temperature and air temperature (Bzovík meteorological station) was done. In the second part of the study, the several multi-regression models of the daily water temperatures are analyzed.","PeriodicalId":321483,"journal":{"name":"Acta Hydrologica Slovaca","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126413456","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