Hydrological Research Letters最新文献_第8页

An interpretation of the relationship between dominant rainfall-runoff processes and the shape of flow duration curve by using data-based modeling approach 基于数据的降雨径流主导过程与流时曲线形状关系的建模研究

IF 1.1

Hydrological Research Letters Pub Date : 2019-01-01 DOI: 10.3178/hrl.13.62

C. Leong, Y. Yokoo

{"title":"An interpretation of the relationship between dominant rainfall-runoff processes and the shape of flow duration curve by using data-based modeling approach","authors":"C. Leong, Y. Yokoo","doi":"10.3178/hrl.13.62","DOIUrl":"https://doi.org/10.3178/hrl.13.62","url":null,"abstract":": Seeking a process-based understanding for the shape of the flow duration curve (FDC) uniqueness to a catchment, this study applied a data-based rainfall-runoff modeling approach in perennial, intermittent and ephemeral catch‐ ments which would have different dominant rainfall-runoff processes. Using this approach, we identified (1) the num‐ ber of dominant runoff processes in a catchment, (2) rain‐ water storage in all processes, (3) infiltrations and return flows between the processes. We then identified reasons for different FDC shapes in the catchments in terms of identi‐ fied dominant processes. Our results showed a humid cli‐ mate with lower aridity index ( AI ) would cause perennial flow created by the combination of four dominant pro‐ cesses of fast flow, faster and slower interflows and base flow components. On the contrary, an arid climate with higher AI would cause ephemeral flow created by the com‐ bination of two dominant processes of fast and faster inter‐ flow components. These indicate a FDC in arid catchments would become ephemeral because of less dominant runoff processes occurring only near ground surface, whereas a humid catchment would become perennial because of more dominant runoff processes occurring from near ground surface to deep underground. These findings contribute in estimating FDCs in ungauged catchments from climatic conditions.","PeriodicalId":13111,"journal":{"name":"Hydrological Research Letters","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69394113","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: 4

Analytical solution for a radial advection-dispersion equation including both mechanical dispersion and molecular diffusion for a steady-state flow field in a horizontal aquifer caused by a constant rate injection from a well 水平井等速注入引起的稳态流场径向平流-扩散方程的解析解，包括机械扩散和分子扩散

IF 1.1

Hydrological Research Letters Pub Date : 2018-01-01 DOI: 10.3178/HRL.12.23

M. Aichi, Kento Akitaya

{"title":"Analytical solution for a radial advection-dispersion equation including both mechanical dispersion and molecular diffusion for a steady-state flow field in a horizontal aquifer caused by a constant rate injection from a well","authors":"M. Aichi, Kento Akitaya","doi":"10.3178/HRL.12.23","DOIUrl":"https://doi.org/10.3178/HRL.12.23","url":null,"abstract":"This study presents the analytical solution for a radial advection-dispersion equation for a steady-state flow field in a horizontal aquifer caused by a constant rate injection from a well, including the mechanical dispersion and molecular diffusion terms in addition to the retardation and first-order attenuation under a Robin-type boundary condition at the well. The derived analytical solutions were compared with finely-meshed finite difference solutions in steady-state and periodic steady-state problems with typical parameters. The results suggest that the analytical solution is exactly derived and ready for application. Comparisons with analytical solutions ignoring molecular diffusion suggest that the derived analytical solution should be used when the product of the decay constant and the retardation factor and the ratio of injection rate to diffusion coefficient are small. Comparisons with analytical solutions with Dirichlet-type boundary conditions confirmed that Robintype boundary conditions should be used to exactly evaluate the concentration profile.","PeriodicalId":13111,"journal":{"name":"Hydrological Research Letters","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3178/HRL.12.23","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69394034","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: 4

Exploring optimal tank size for rainwater harvesting systems in Asian tropical climates 探索亚洲热带气候下雨水收集系统的最佳水箱尺寸

IF 1.1

Hydrological Research Letters Pub Date : 2018-01-01 DOI: 10.3178/HRL.12.1

Vuong Minh Nguyen, Y. Ichikawa, H. Ishidaira

{"title":"Exploring optimal tank size for rainwater harvesting systems in Asian tropical climates","authors":"Vuong Minh Nguyen, Y. Ichikawa, H. Ishidaira","doi":"10.3178/HRL.12.1","DOIUrl":"https://doi.org/10.3178/HRL.12.1","url":null,"abstract":"This paper explores optimal tank size for domestic rainwater harvesting systems in Asian tropical climates. A total of 128 locations in Vietnam covering three regional climate patterns were selected for the study. The system behavior was simulated on a daily basis using between 27 and 32 years of rainfall data. Annual water cost was investigated to determine optimal tank size. The relationship among optimal size, climate and system conditions was also analyzed. Results of the study emphasize the economic benefit of rainwater harvesting for the whole study area. The optimal tank size for a non-potable rainwater harvesting system has a range of 1.2–2.6 m3, exhibiting 19–65% supply efficiency and a payback period of 7–17 years. Extended system scenarios reveal a contrast in the influences of demand and roof area on optimal size in relation to rainfall amount. The roof area is critical in determining optimal size in the low rainfall area while the demand is important in the high rainfall area. Although there is a certain degree of variability in optimal tank size, it does not considerably undermine the economic benefit of a rainwater harvesting system.","PeriodicalId":13111,"journal":{"name":"Hydrological Research Letters","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3178/HRL.12.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69393974","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: 6

Flood risk curve development with probabilistic rainfall modelling and large ensemble climate simulation data: a case study for the Yodo River basin 基于概率降雨模型和大集合气候模拟数据的洪水风险曲线发展:以Yodo河流域为例

IF 1.1

Hydrological Research Letters Pub Date : 2018-01-01 DOI: 10.3178/HRL.12.28

Tomohiro Tanaka, Y. Tachikawa, Y. Ichikawa, K. Yorozu

{"title":"Flood risk curve development with probabilistic rainfall modelling and large ensemble climate simulation data: a case study for the Yodo River basin","authors":"Tomohiro Tanaka, Y. Tachikawa, Y. Ichikawa, K. Yorozu","doi":"10.3178/HRL.12.28","DOIUrl":"https://doi.org/10.3178/HRL.12.28","url":null,"abstract":": A flood risk curve is the relation between annual maximum economic damage due to floods and its exceedance probability, which provides useful information for quantitative flood risk assessment. This study proposed to examine the applicability of d4PDF, a large ensemble climate projection dataset, to develop a probabilistic flood risk curve for the Yodo River basin (8,240 km 2 ), Japan. The d4PDF is a climate dataset under historical and 4 K increase conditions with tens of ensembles and provide a physically-based and reliable estimation of ensemble flood risk curves and their future changes. We identified that d4PDF rainfall data has bias for the spatial variability of rainfall probably due to coarse spatial resolution, while not for basin-averaged rainfall. This typical type of bias was removed by incorporating basin-averaged rainfall of d4PDF and observed spatial pattern of rainfall into analytically-based probabilistic rainfall modelling. Derived ensemble flood risk curves provided a histogram of T-year flood damage. The histogram had a long tail and showed that T-year flood damage may be larger than its deterministic estimate located at the median. Estimated ensemble flood risk curves at present/ future climates showed a clear increase of flood risk and its uncertainty at 4 K increase scenario.","PeriodicalId":13111,"journal":{"name":"Hydrological Research Letters","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3178/HRL.12.28","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69394069","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: 13

Impacts of climate and land use changes on river discharge in a small watershed: a case study of the Lam Chi subwatershed, northeast Thailand 气候和土地利用变化对小流域河流流量的影响——以泰国东北部林芝小流域为例

IF 1.1

Hydrological Research Letters Pub Date : 2018-01-01 DOI: 10.3178/HRL.12.7

Patchares Chacuttrikul, Masashi Kiguchi, T. Oki

引用次数: 7

Evaluation of future flood risk in Asian megacities: a case study of Jakarta 亚洲特大城市未来洪水风险评估:以雅加达为例

IF 1.1

Hydrological Research Letters Pub Date : 2018-01-01 DOI: 10.3178/HRL.12.14

N. F. Januriyadi, S. Kazama, I. R. Moe, S. Kure

{"title":"Evaluation of future flood risk in Asian megacities: a case study of Jakarta","authors":"N. F. Januriyadi, S. Kazama, I. R. Moe, S. Kure","doi":"10.3178/HRL.12.14","DOIUrl":"https://doi.org/10.3178/HRL.12.14","url":null,"abstract":": The purpose of this research is to assess the future flood risk in rapidly urbanizing cities under climate change. A flood inundation model and a flood damage costs model were employed to project the future flood risk. We employed the combinations of eight global climate models (GCMs) and three representative concentration pathways (RCPs) for precipitation to represent the climate change. Land-use change and land subsidence information were employed to represent the urban development effects. The expected annual damage costs (EADC) were also calculated to explain the severity of the flood risk. In addition, a global approach was used to estimate the asset values by comparing the common parameters (e.g. gross domestic production (GDP) or population). As a result, the combination of climate change and urban development amplified the mean future flood risk by 322% to 402% in 2050, with a 95% confidence interval. The results also show a large uncertainty of the future flood risk due to the future scenarios. These findings will assist policymakers in determining the investment for future flood prevention and mitigation.","PeriodicalId":13111,"journal":{"name":"Hydrological Research Letters","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3178/HRL.12.14","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69394014","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: 19

Impact of temperature changes on groundwater levels and irrigation costs in a groundwater-dependent agricultural region in Northwest Bangladesh 孟加拉国西北部依赖地下水的农业区温度变化对地下水位和灌溉成本的影响

IF 1.1

Hydrological Research Letters Pub Date : 2017-03-25 DOI: 10.3178/HRL.11.85

Golam Saleh Ahmed Salem, S. Kazama, Shamsuddin Shahid, N. Dey

引用次数: 29

Estimating flow duration curve in the humid tropics: a disaggregation approach in Hawaiian watersheds 估算湿润热带地区的水流持续时间曲线:夏威夷流域的一种分解方法

IF 1.1

Hydrological Research Letters Pub Date : 2017-01-01 DOI: 10.3178/HRL.11.175

C. Leong, Y. Yokoo

{"title":"Estimating flow duration curve in the humid tropics: a disaggregation approach in Hawaiian watersheds","authors":"C. Leong, Y. Yokoo","doi":"10.3178/HRL.11.175","DOIUrl":"https://doi.org/10.3178/HRL.11.175","url":null,"abstract":"The authors attempted to develop a simple methodology for estimating daily flow duration curves (FDCs) in island watersheds under humid tropic conditions, to realize better water management in data-limited island watersheds. This study disaggregated a FDC into three parts, namely high, middle and low flow parts and estimated each part independently. Based on Hawaiian watersheds, this study developed a methodology for estimating the high flow part using daily precipitation data and the Curve Number (CN) method, whereas we estimated the middle flow part directly from mean monthly flow (MMF) data. The results for the middle flow part showed the MMF data closely tracking the daily FDCs for nine of the eleven studied watersheds. For the high flow part, the results showed that only after calibration of the CN method, were there significant improvements in estimations. These results suggest it is possible to estimate the middle flow part of the FDC with MMF but the high flow part must use a calibrated CN in the CN method. This study also explored the relationship between calibrated CN and estimated absorption capacity of the studied watersheds to find the possibility of estimating suitable CN of a watershed from its geological characteristics.","PeriodicalId":13111,"journal":{"name":"Hydrological Research Letters","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3178/HRL.11.175","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69393295","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

Estimating probability of extreme rainfall over Japan using Extended Regional Frequency Analysis 利用扩展区域频率分析估算日本极端降雨的概率

IF 1.1

Hydrological Research Letters Pub Date : 2017-01-01 DOI: 10.3178/HRL.11.19

M. Sugi, Y. Imada, T. Nakaegawa, K. Kamiguchi

引用次数: 8

Bias correction of simulated storm surge height considering coastline complexity 考虑海岸线复杂性的模拟风暴潮高度偏差校正

IF 1.1

Hydrological Research Letters Pub Date : 2017-01-01 DOI: 10.3178/HRL.11.121

Jung-A Yang, Sooyoul Kim, N. Mori, H. Mase

引用次数: 7