-
1221
The effects and the macroeconomic dynamics of natural disaster damages: investigation of local evidence
Published 2025-12-01“…This study investigates the macroeconomic consequences of natural disasters in southeast Texas, a region frequently distressed by meteorological and hydrological events. By concentrating on a county-level analysis, we methodically assess the impacts of natural disaster damages on key economic indicators: aggregate personal income, aggregate wages, wages per worker, aggregate employment and aggregate income transfers over the period 1990–2019. …”
Get full text
Article -
1222
The application of grey statistical method and analytic hierarchy process in the evaluation of community park rehabilitation landscapes
Published 2025-02-01“…The results are as follows: (1) Out of the 30 indicator factors, 13 were not selected through the GST method. (2) The weights of the criteria layer, from highest to lowest, are as follows: physical rehabilitation (D1) with a weight of 0.6370, psychological rehabilitation (D2) with a weight of 0.2583, and spiritual rehabilitation (D3) with a weight of 0.1047. (3) The highest and lowest values in the indicator layer are as follows: D1 (P14: illumination duration 0.2359, P17: hydrological conditions 0.0197); D2 (P21: sense of security 0.1433, P23: human-environment interaction 0.0162); D3 (P34: sense of pleasure 0.0400, P36: aesthetic value 0.0045). …”
Get full text
Article -
1223
Analysing the Effects of Atmospheric Teleconnections on Streamflow Regime in the Eastern Black Sea Basin in Türkiye
Published 2024-07-01“…Analysing the variations in hydrological cycle components is essential for water resources planning and management. …”
Get full text
Article -
1224
Analysis on the Variation Characteristics of Rainstorm and Cause of Flood in Central Yunnan — Take Downtown of Yuxi City as an Example
Published 2021-01-01“…Taking the downtown of Yuxi as an example,based on the maximum 1h and 24h rainstorm data of Dongfeng station from 1981 to 2019,this paper studies the variation characteristics of short-duration rainstorm in central Yunnan by the linear moving average,Mann-Kendall test and Hurst index,analyzes the causes of urban flood and puts forward countermeasures and suggestions.The results show that:The annual maximum 1 h and 24 h precipitation in downtown of Yuxi presented an insignificant fluctuation and rising trend,with the change rate of 1.4 mm/10a and 0.6 mm/10a respectively.The Hurst index of maximum 1 h and 24 h precipitation over the years is 0.57 and 0.56 respectively,which is consistent with the trend of future changes and relatively weak in continuity.The maximum 1 h precipitation sequence of the Dongfeng station changed suddenly in 1987,2002,2007 and 2013,while the maximum 24 h precipitation sequence changed suddenly in 2000,2009 and 2013.The annual maximum 1 h and 24 h precipitation mostly occurred in August and June,with a high concentration of rainstorm.The average P<sub>1h</sub>/P<sub>24h</sub> of the same rainstorm was 47.2%,and the largest proportion was 71.4%.Based on the causes of flood,it is suggested to regulate the river system,improve the pipe network,build new rain and sewage pipe network,construct the sponge city at all areas,and establish a scientific hydrological monitoring system and prediction and early warning platform for urban flood control and drainage.…”
Get full text
Article -
1225
Measurement of remaining storage, rate of siltation, and rate of erosion of the Ahmadu Bello University Farm Lake drainage Basin in Zaria
Published 2013-07-01“…Thereafter calculated rate of siltation between years 1966 and 2009 as 6,600 m3/y, rate of erosion in the drainage basin during the same period as 0.559 mm/y, and safe yield during 176 days of hydrological dry season as non existing, because after deduction of losses to evaporation calculated as 194,560 m3/y and deduction of 272,700 m3 of environmental reserve - minimum necessary to preserve aquatic wildlife, there is no active storage left. …”
Get full text
Article -
1226
Classification and identification of karstic aquifers in the OSHTORANKUH region
Published 2019-03-01“…The karst can be effective ways to develop into three categories: physical, chemical and hydrogeologic studies divided that role of lithology and its properties, weather conditions and hydrological and structural factors such as faults and fissures, and slope area are of particular importance. …”
Get full text
Article -
1227
Automatic Threshold Selection for Generalized Pareto and Pareto–Poisson Distributions in Rainfall Analysis: A Case Study Using the NOAA NCDC Daily Rainfall Database
Published 2025-01-01“…Results indicate that the method not only improves threshold estimation precision but also enhances the reliability of extreme-value analysis for precipitation records, making it a valuable tool for hydrological applications. The findings emphasize the practical implications of the method for analyzing extreme rainfall events and its potential for broader climatological studies.…”
Get full text
Article -
1228
Factors Controlling Stable Hydrogen,Oxygen,and Carbon Isotope Ratios in Regional Shallow Groundwater of Guangzhou City,China
Published 2023-01-01“…To investigate the distribution characteristics and controlling factors of stable hydrogen,oxygen,and carbon isotopes in shallow groundwater in Guangzhou,18 shallow groundwater monitoring wells in Guangzhou were selected.This study analyzed the component characteristics of stable hydrogen and oxygen isotopes in surface water and groundwater,stable isotopes of dissolved inorganic carbon in groundwater,and ammonium nitrogen isotope in groundwater in Guangzhou City and investigated the influencing factors of groundwater hydrological characteristics and the evolution of dissolved inorganic carbon.The results show that atmospheric precipitation is an important source of shallow groundwater recharge,and there is a close hydraulic connection between groundwater and surface water in Conghua District,northern Guangzhou,where precipitation directly recharges groundwater and is less affected by evaporation;near the southern coastal area of Guangzhou,groundwater may be affected by seawater intrusion.The deuterium excess parameter (d-excess) values in groundwater in Conghua District are significantly influenced by the control of groundwater retention time,and the significantly low d-excess values in the southern coastal area of Guangzhou may be influenced by the seawater intrusion.The evolution of DIC in shallow groundwater is significantly influenced by anthropogenic factors,and the value of δ<sup>13</sup>C<sub>DIC</sub> in the water body is higher.In contrast,high-ammonium groundwater mainly comes from the degradation of natural organic matter,and the high concentration of NH<sup>+</sup><sub>4</sub> is the main reason for the abnormally high δ<sup>13</sup>C<sub>DIC</sub> value in groundwater.…”
Get full text
Article -
1229
Study to Quantitative Impact of Climate Change and Human Activities on Runoff in the Upper Reaches of Nanpan River
Published 2020-01-01“…The precipitation atupper reaches of Jiangbianjie Hydrological Station showed a non-significant decrease trend, but the runoff showed an significant decrease trend. (2) From 1974 to 2001, the contribution rates of climate change and human activities to runoff change were 65.9% and 34.1% respectively. …”
Get full text
Article -
1230
Multi-objective optimization of water resources allocation in rift valley lakes basin (Ethiopia): tradeoffs between efficiency and equity
Published 2025-02-01“…The study area, RVLB, is characterized by diverse hydrological and hydrogeological settings, with significant variations in temperature, rainfall, and evapotranspiration. …”
Get full text
Article -
1231
Differential Impact of Climate Change and Human Activities on Runoff Changes in the Upper Reaches of the Yellow River
Published 2022-01-01“…The results show that the evaluation indexes R<sup>2</sup> and NSE of five hydrological stations are all larger than 0.8.During the study period,the runoff changes in the source area of the YR were generally insignificant,and the runoff downstream declined earlier and more obviously than that upstream.The change in runoff in the middle section of the YR from 1986 to 2005 was affected by both climate change and human activities.After 2005,human activities were the leading factor for the reduction of runoff.The runoff changes in the lower part of the YR from 1986 to 1995 were jointly affected by climate change and human activities.The gradual strengthening of human activities was the main cause of runoff changes after 1995.The rapid development of industry,agriculture and urban agglomerations and the successive construction of hydropower stations have led to a change in the differential driving characteristics of runoff changes from “climate control” in the base period to “co-control by climate change and human activities” and finally to “dominant human activities.”…”
Get full text
Article -
1232
Study on Runoff and Climate Change Response of Upper and Middle Reaches of Xiuhe River Basin Based on SWAT Model
Published 2020-01-01“…Study on distributed hydrological simulation,model parameter sensitivity analysis and response of climate change to runoff are of important practical significance and scientific value for control of flood and drought disasters and distribution of water resources in the Xiuhe River Basin.Taking the upper and middle reaches of Xiuhe River Basin as research area,this paper builds the SWAT localization model to simulate runoff,and conducts the quantitative analysis on the response of runoff of Xiuhe River Basin to climate change with 55 climate scenarios (temperature increases or decreases 0~2℃,precipitation increases 0~60% or decreases 0~40%,respectively) as input of SWAT model.Results show that:In calibration period,the correlation coefficient R<sup>2</sup> is 0.87,and the Nash coefficient E<sub>ns</sub> is 0.86,while,0.87 and 0.83 respectively in verification period,proving the high applicability of SWAT model in runoff simulation of Xiu River Basin;10% change of precipitation in Xiuhe River Basin has an impact on its runoff of 8.9%~10.7%;1℃ change of temperature has an impact on its runoff of only 0.3%~1.3%;precipitation is the main influencing factor of runoff change;after analyzing the climate scenario grid,when the precipitation is between -40% and +50%,the precipitation-temperature-runoff is basically linearly correlated,which can be presented by a plane function.In extreme precipitation cases,the relationship between temperature and runoff is nonlinear.…”
Get full text
Article -
1233
Review on Applications of System Dynamics Method in Regional Water Demand Prediction
Published 2022-01-01“…Water resources are the most important basic natural resources for the sustainable development of the social economy,the controlling element of the ecological environment,and strategic economic resources.With the growth in population and economic development,regional water consumption is increasing,and the imbalance between the supply and demand of water resources has become the “bottleneck” restricting regional economic development.Water demand prediction is an important basis for the planning,management,and sustainable utilization of regional water resources,which involves complex factors such as economic,hydrological,meteorological,social,engineering,and technological factors as well as the industrial structure and industrial and agricultural development.The system dynamics method based on the feedback control theory has significant advantages in the dynamic change,causal mechanism analysis,quantitative analysis and simulation of a multi-factor coupled complex giant system.It has been widely used in the prediction of regional water demand.The system dynamics model of regional water demand prediction can decompose a complex social water use system into multiple interconnected and mutually constrained subsystems.It can clearly show the dynamic change process of water demand of each water use subsystem and obtain accurate prediction results of water demand.In this paper,firstly,the characteristics of the system dynamics method are briefly introduced.Then,the applications of this method in regional water demand are summarized and analyzed from four aspects,i.e.…”
Get full text
Article -
1234
Characteristics of Water Distribution in Vadose Zone in the Soil Site and Its Impact on Site Preservation
Published 2023-01-01“…Affected by water,ruins of soil texture are prone to crack,crispness,salt accumulation,moss and other hazards,which is not conducive to their preservation.In order to find out the source of soil water damage in the soil site so as to provide a reliable basis for the preservation of this site,based on the refined hydrogeological survey,this paper used the Solinst Levelogger groundwater recorder and MW307GD-M4 wireless gradient soil three-parameter monitoring terminal to continuously monitor the water trend in vadose zone in a long time sequence,and analyse the cause and mechanism of water damage in the archeological shed.The results show that the moisture content of the vadose zone of the ruin is generally high,with that of the same layer outside the shed about 10% higher than that inside the shed,but the soil permeability coefficients mainly range from 2.07×10<sup>-5</sup> to 3.41×10<sup>-5</sup>cm/s,suggesting the weak effect of the rainfall outside the shed on the soil in the shed through horizontal infiltration.The phreatic water level ranges from 3.2 to 5.6 m,with an amplitude of about 0.25 m within the hydrological year.The rising capillary water subject to its fluctuation can directly affect the excavation interface under extreme rainfall conditions as the main control factor of the water damage of the ruin of soil texture.By reference to the engineering-geological concept of “upstream flow interception,downstream flow discharge and local flow control”,regulating the moisture content of the soil body in the sacrificial area casts new light on the preservation of ruins of soil texture.…”
Get full text
Article -
1235
Investigation of Impervious surface and Urban Surface Temperature in Qaemshahr
Published 2021-09-01“…Information on a variation of impervious surface is useful for understanding urbanization and its impacts on the hydrological cycle, water management, surface energy balances, urban heat island, and biodiversity. …”
Get full text
Article -
1236
HYDRAULIC ASPECTS OF LOGJAM FORMATION DURING EXTREME HIGH FLOODS
Published 2020-10-01“…It is shown that this task is not only hydrological, technical, but also, first, economic. Therefore, in each case, it is necessary to consider specially a set of measures to minimize the risks associated with the formation of congestion of trees in front of the bridge. …”
Article -
1237
Determination of Participation of Khorramabad Basin's Sub-Basins in Peak Discharge and Runoff Volume to Find the Prioritization in Flood Control
Published 2013-11-01“…Considering the lack of hydrometric stations in all sub-basin outlet, performance of these target requires the simulation of rainfall–runoff in sub-basins by hydrological models. In this research, the HEC – HMS rainfall-runoff model was used in order to determining the amount of output flood in each sub-basin and its participation rate in output flood of Khorramabad drainage basin in Lorestan province. …”
Get full text
Article -
1238
Unpacking the critical elements for solving the complex issue of sustainable lake management: Case studies from Japan
Published 2025-06-01“…Among the different types of surface water, lakes are particularly difficult to restore once water quality deteriorates due to their hydrological cycles and complex dynamics. This study compares policy implementation and its relationship to water quality improvement through spatio-temporal variation for two lakes in Japan: Lake Biwa and Lake Teganuma. …”
Get full text
Article -
1239
Evaluation of Water Resources Carrying Capacity in Liaoning Province Based on Entropy Weight TOPSIS Model
Published 2023-01-01“…Water resources are important for human survival.The utilization of water resources can influence the water cycle.At the same time,as an integral part of the hydrological cycle,water resources have a restrictive effect on the natural environment and human beings.In this paper,the relevant data on water resources,society,economy,and ecology from 2010 to 2020 were sorted out,and a multi-factor evaluation system was constructed.The weights were determined by combining the analytic hierarchy process and the entropy weight method.The ideal point method and a coupling coordination model were used to evaluate the water resources carrying capacity and the coordinated development level of each subsystem in Liaoning Province.In this way,it is expected to perfect the water resources management system and promote the development of water resources.The following results were obtained from this study.① The water resources carrying capacity of Liaoning Province showed an increasing trend during 2010—2020,and the carrying capacity was evaluated as grades Ⅱ—Ⅳ.② The coupling coordination level of water resources in Liaoning Province is between 0.6 and 0.9,which is in the transition stage from primary coordination to intermediate coordination.In 2020,all prefecture-level cities showed good coordination.The coupling coordination of water resources,society,economy,and ecology is in the order of economy>society>ecology>water resources.③ The water resources carrying capacity in Liaoning Province is mainly influenced by precipitation,sewage treatment rate,water resources volume,and the proportion of tertiary industry.In the future,we should improve water use efficiency,firmly establish the concept of green development,and realize the sustainable development of water resources.…”
Get full text
Article -
1240
La difficile gestion globale de l’eau en Camargue (France) : le Contrat de delta
Published 2005-12-01“…This situation has contributed to the modification of the region's natural hydrological rhythms that were once marked by dry Mediterranean summers. …”
Get full text
Article