Relevant bibliographies by topics / HYDROGRAPH SEPARATION

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'HYDROGRAPH SEPARATION'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "HYDROGRAPH SEPARATION"

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Su, Ninghu. "The unit hydrograph model for hydrograph separation." Environment International 21, no. 5 (January 1995): 509–15. http://dx.doi.org/10.1016/0160-4120(95)00050-u.

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Mandeville, A. N. "Insights gained from four component hydrograph separation." Hydrology Research 47, no. 3 (February 24, 2016): 606–18. http://dx.doi.org/10.2166/nh.2016.061.

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Traditional hydrograph separation techniques split an observed storm hydrograph into two main components representing ‘storm runoff’ and ‘baseflow’. In this paper a new separation technique is described which makes an initial split into two main components, quickflow and slowflow, which are each then subsequently split into two further subcomponents. The resulting procedure is termed the ‘four component hydrograph separation technique’. Various ways of recombining these four subcomponents to build up a curve that represents the observed storm hydrograph are possible, of which two ways are examined in further detail. If it is assumed that the four component separation technique provides a promising representation of an observed storm hydrograph, these two ways allow theoretical and practical insights to be gained into four existing hydrograph separation techniques. A conclusion, common to all four, is that much more care is required in naming the flow lines separating out each of the suggested subcomponents making up the observed storm hydrograph. This paper also emphasises the key role played by the slowflow storm runoff subcomponent, which has not been given sufficient prominence in existing event-based models in the past. A procedure for estimating each of the four subcomponents is illustrated for an observed event.
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Parmentier, B., J. Dooge, and M. Bruen. "Root selection methods in flood analysis." Hydrology and Earth System Sciences 7, no. 2 (April 30, 2003): 151–61. http://dx.doi.org/10.5194/hess-7-151-2003.

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Abstract. In the 1970s, de Laine developed a root-matching procedure for estimating unit hydrograph ordinates from estimates of the fast component of the total runoff from multiple storms. Later, Turner produced a root selection method which required only data from one storm event and was based on recognising a pattern typical of unit hydrograph roots. Both methods required direct runoff data, i.e. prior separation of the slow response. This paper introduces a further refinement, called root separation, which allows the estimation of both the unit hydrograph ordinates and the effective precipitation from the full discharge hydrograph. It is based on recognising and separating the quicker component of the response from the much slower components due to interflow and/or baseflow. The method analyses the z-transform roots of carefully selected segments of the full hydrograph. The root patterns of these separate segments tend to be dominated by either the fast response or the slow response. This paper shows how their respective time-scales can be distinguished with an accuracy sufficient for practical purposes. As an illustration, theoretical equations are derived for a conceptual rainfall-runoff system with the input split between fast and slow reservoirs in parallel. These are solved analytically to identify the reservoir constants and the input splitting parameter. The proposed method, called "root separation", avoids the subjective selection of rainfall roots in the Turner method as well as the subjective matching of roots in the original de Laine method. Keywords: unit hydrograph,identification methods, z-transform, polynomial roots, root separation, fast andslow response, Nash cascade
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ACAR, R., and K. SAPLIOGLU. "USING THE PSO ALGORITHM FOR BASEFLOW SEPARATION AND DETERMINATION OF TRENDS FOR THE YESILIRMAK RIVER (NORTH TURKEY)." Meteorologiya i Gidrologiya, no. 1 (January 2024): 58–71. http://dx.doi.org/10.52002/0130-2906-2024-1-58-71.

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Estimation of baseflow is a complex hydrographic task. Baseflow techniques and coefficients vary from basin to basin, stream to stream, and year to year. In this study, meta-heuristic optimization is used to automatically identify baseflow. The Particle Swarm Optimization (PSO), a meta-heuristic optimization approach, is chosen. The constraint and cost functions were determined using the PSO algorithm, Lyne and Hollick techniques, and a computer application. Over the period 1980-2015, the data were collected at the Kale station in the Yesilırmak River basin to validate the study model. The results show that the hydrographs and baseflow dividing line were separated effectively. It has also been revealed that the PSO has a high speed as well as a high level of precision. In the research, in addition to the baseflow separation, the hydrograph, baseflow, and ratio of the baseflow to the streamflow at the station No. 1402 were assessed using the Mann-Kendall test and Innovative Trend Test (ITA), and as a result, their trends have been found. By the use of both of these methods, it has been shown that all parameters have an unfavorable trend. In addition, the research came to some other significant conclusions, such as the fact that the baseflow declines in tandem with the flow values and that the baseflow rates are low in years with high peak values of the hydrograph.
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Cranmer, A. J., N. Kouwen, and S. F. Mousavi. "Proving WATFLOOD: modelling the nonlinearities of hydrologic response to storm intensities." Canadian Journal of Civil Engineering 28, no. 5 (October 1, 2001): 837–55. http://dx.doi.org/10.1139/l01-049.

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This paper examines the effects of modelling the nonlinearities of hydrologic response to various storm intensities. Radar rainfall data, remotely sensed land use and land cover data, measured streamflows, and meteorological data were incorporated into the distributed flood forecasting model WATFLOOD to synthesize runoff hydrographs for three significant warm weather rainfall events occurring in 1995. The watershed selected for study was the 288 km2 Duffins Creek drainage basin in southern Ontario. The effects of scaling radar rainfall amounts to match regional storm intensities on the synthesized streamflow hydrographs were examined. Computations and analysis were performed in agreement with widely accepted hydrologic principles and assumptions. The observed and synthesized hydrographs were compared using the unit hydrograph method. The observed and composite unit hydrographs matched extremely well in terms of shape, timing, and peak flow magnitude. These results indicated that WATFLOOD is capable of accurately modelling the nonlinear rainfall–runoff processes for increasing rainfall intensities with respect to peak flow, basin lag, and time to peak flow. However, the arbitrariness of assessing the effective rainfall and base-flow separation for the unit hydrograph method can lead to uncertainties in computing peak flow magnitudes. The grid element size and number and the drainage areas above streamflow gauges are of critical importance to the accuracy of the model.Key words: hydrology, watershed model, flood forecasting, hydrological modelling, model validation, unit hydrograph, nonlinear response.
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Wang, Shusen, Junhua Li, and Hazen A. J. Russell. "A novel method for cold-region streamflow hydrograph separation using GRACE satellite observations." Hydrology and Earth System Sciences 25, no. 5 (May 20, 2021): 2649–62. http://dx.doi.org/10.5194/hess-25-2649-2021.

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Abstract. Streamflow hydrograph analysis has long been used for separating streamflow into baseflow and surface runoff components, providing critical information for studies in hydrology, climate and water resources. Issues with established methods include the lack of physics and arbitrary choice of separation parameters, problems in identifying snowmelt runoff, and limitations on watershed size and hydrogeological conditions. In this study, a Gravity Recovery and Climate Experiment (GRACE)-based model was developed to address these weaknesses and improve hydrograph separation. The model is physically based and requires no arbitrary choice of parameters. The new model was compared with six hydrograph separation methods provided with the U.S. Geological Survey Groundwater Toolbox. The results demonstrated improved estimates by the new model particularly in filtering out the bias of snowmelt runoff in baseflow estimate. This new model is specifically suitable for applications over large watersheds which is complementary to the traditional methods that are limited by watershed size. The output from the model also includes estimates for watershed hydraulic conductivity and drainable water storage, which are useful parameters in evaluating aquifer properties, calibrating and validating hydrological and climate models, and assessing regional water resources.
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Kirchner, James W. "Quantifying new water fractions and transit time distributions using ensemble hydrograph separation: theory and benchmark tests." Hydrology and Earth System Sciences 23, no. 1 (January 18, 2019): 303–49. http://dx.doi.org/10.5194/hess-23-303-2019.

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Abstract. Decades of hydrograph separation studies have estimated the proportions of recent precipitation in streamflow using end-member mixing of chemical or isotopic tracers. Here I propose an ensemble approach to hydrograph separation that uses regressions between tracer fluctuations in precipitation and discharge to estimate the average fraction of new water (e.g., same-day or same-week precipitation) in streamflow across an ensemble of time steps. The points comprising this ensemble can be selected to isolate conditions of particular interest, making it possible to study how the new water fraction varies as a function of catchment and storm characteristics. Even when new water fractions are highly variable over time, one can show mathematically (and confirm with benchmark tests) that ensemble hydrograph separation will accurately estimate their average. Because ensemble hydrograph separation is based on correlations between tracer fluctuations rather than on tracer mass balances, it does not require that the end-member signatures are constant over time, or that all the end-members are sampled or even known, and it is relatively unaffected by evaporative isotopic fractionation. Ensemble hydrograph separation can also be extended to a multiple regression that estimates the average (or “marginal”) transit time distribution (TTD) directly from observational data. This approach can estimate both “backward” transit time distributions (the fraction of streamflow that originated as rainfall at different lag times) and “forward” transit time distributions (the fraction of rainfall that will become future streamflow at different lag times), with and without volume-weighting, up to a user-determined maximum time lag. The approach makes no assumption about the shapes of the transit time distributions, nor does it assume that they are time-invariant, and it does not require continuous time series of tracer measurements. Benchmark tests with a nonlinear, nonstationary catchment model confirm that ensemble hydrograph separation reliably quantifies both new water fractions and transit time distributions across widely varying catchment behaviors, using either daily or weekly tracer concentrations as input. Numerical experiments with the benchmark model also illustrate how ensemble hydrograph separation can be used to quantify the effects of rainfall intensity, flow regime, and antecedent wetness on new water fractions and transit time distributions.
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Camacho, V. V., A. M. L. Saraiva Okello, J. W. Wenninger, and S. Uhlenbrook. "Understanding runoff processes in a semi-arid environment through isotope and hydrochemical hydrograph separations." Hydrology and Earth System Sciences Discussions 12, no. 1 (January 22, 2015): 975–1015. http://dx.doi.org/10.5194/hessd-12-975-2015.

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Abstract. The understanding of runoff generation mechanisms is crucial for the sustainable management of river basins such as the allocation of water resources or the prediction of floods and droughts. However, identifying the mechanisms of runoff generation has been a challenging task, even more so in arid and semi-arid areas where high rainfall and streamflow variability, high evaporation rates, and deep groundwater reservoirs increase the complexity of hydrological process dynamics. Isotope and hydrochemical tracers have proven to be useful in identifying runoff components and their characteristics. Moreover, although widely used in humid-temperate regions, isotope hydrograph separations have not been studied in detail in arid and semi-arid areas. Thus the purpose of this study is to determine if isotope hydrograph separations are suitable for the quantification and characterization of runoff components in a semi-arid catchment considering the hydrological complexities of these regions. Through a hydrochemical characterization of the surface water and groundwater sources of the catchment and two and three component hydrograph separations, runoff components of the Kaap Catchment in South Africa were quantified using both, isotope and hydrochemical tracers. No major disadvantages while using isotope tracers over hydrochemical tracers were found. Hydrograph separation results showed that runoff in the Kaap catchment is mainly generated by groundwater sources. Two-component hydrograph separations revealed groundwater contributions between 64 and 98% of total runoff. By means of three-component hydrograph separations, runoff components were further separated into direct runoff, shallow and deep groundwater components. Direct runoff, defined as the direct precipitation on the stream channel and overland flow, contributed up to 41% of total runoff during wet catchment conditions. Shallow groundwater defined as the soil water and near-surface water component, contributed up to 45% of total runoff, and deep groundwater contributed up to 84% of total runoff. A strong correlation for the four studied events was found between the antecedent precipitation conditions and direct runoff. These findings suggest that direct runoff is enhanced by wetter conditions in the catchment which trigger saturation excess overland flow as observed in the hydrograph separations.
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SHIMADA, Masashi. "New Approach to Hydrograph Separation Using Wavelets." Journal of Japan Society of Hydrology and Water Resources 12, no. 2 (1999): 121–29. http://dx.doi.org/10.3178/jjshwr.12.121.

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Hannula, Steven R., Kenneth J. Esposito, John A. Chermak, Donald D. Runnells, David C. Keith, and Larry E. Hall. "Estimating Ground Water Discharge by Hydrograph Separation." Ground Water 41, no. 3 (May 2003): 368–75. http://dx.doi.org/10.1111/j.1745-6584.2003.tb02606.x.

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Dissertations / Theses on the topic "HYDROGRAPH SEPARATION"

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Kracht, Oliver. "Tracer-based hydrograph separation methods for sewer systems /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16994.

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Bishop, Kevin Harold. "Episodic increases in stream acidity, catchment flow pathways and hydrograph separation." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239601.

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Cimino, Joseph A. "Empirical mass balance calibration of analytical hydrograph separation techniques using electrical conductivity." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000213.

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Xue, Han. "HYDROGRAPH-SEPARATION-BASED NON-POINT SOURCE POLLUTION MODELLING IN THE PINGQIAO RIVER BASIN，CHINA." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225566.

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付記する学位プログラム名: グローバル生存学大学院連携プログラム
Kyoto University (京都大学)
0048
新制・課程博士
博士(工学)
甲第20341号
工博第4278号
新制||工||1662(附属図書館)
京都大学大学院工学研究科社会基盤工学専攻
(主査)教授 寶 馨, 教授 立川 康人, 准教授 佐山 敬洋
学位規則第4条第1項該当
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Kane, Dellwyn. "Hydrograph separation using end member mixing models in the Oona Water river catchment, Co Tyrone." Thesis, University of Ulster, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529518.

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Gatesman, Tiffany A. "Glacier Contribution to Lowland Streamflow| A Multi-Year, Geochemical Hydrograph Separation Study in Sub-Arctic Alaska." Thesis, University of Alaska Fairbanks, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10617441.

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Glacier melt affects the geochemical composition of rivers; however, quantifying the glacier contribution to subarctic watershed-scale runoff has attracted limited attention. To estimate glacier contribution, we conducted a 6-year geochemical hydrograph separation study in a geologically heterogeneous glacierized watershed in Interior Alaska. Water samples were collected daily from Jarvis Creek during late April through September. Source waters were collected synoptically each year from rain, snow, baseflow (winter discharge), and the glacier terminus discharge. All samples were analyzed for stable water isotopes and dissolved ion concentrations. Stream surface water samples have large seasonal and inter-annual geochemical variation, however, source waters show distinct chemical signatures allowing the application of a geochemical hydrograph separation model to quantify relative source contribution to lowland streamflow. Considerable inter-annual differences within source water signatures emphasize the importance in informing the model with source waters sampled for each season. We estimated a seasonal average of 35% (20 to 44%) glacier terminus discharge contribution with a daily range of 2 (May) to 80% (September). If glacier contribution was to cease completely, stream discharge would be reduced by 48% and 22% in low and high rainfall summers, respectively. Combined with the documented shrinkage of glaciers, our findings emphasizes the need for further research on glacial wastage effect on subarctic watersheds.

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Marquis, John Paul. "Hydrograph separation using natural isotope and conductance methods in the West Kootenay area of British Columbia." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24859.

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The storm runoff of small springs and seeps in the West Kootenays was subjected to hydrograph separation using oxygen-18 and conductance methodologies. The results showed that the vast majority of storm discharge was groundwater. Under peak flow conditions, the ratio of prestorm water to storm water was 0.93 for Morley Spring, 0.88 for Anderson Creek, 0.87 for Elliott Creek, 0.84 for Chou Creek and 0.85 for Tank Creek. Further comparison between prestorm discharge and storm water indicated that the groundwater probably originated as spring snow melt. These implications are discussed with regard to the various logging development plans currently being proposed for the study sites.
Science, Faculty of
Resources, Environment and Sustainability (IRES), Institute for
Graduate
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Tedder, Newton William. "Dissolved Road Salt Transport in Urban and Rural Watersheds in Massachusetts." Thesis, Boston College, 2009. http://hdl.handle.net/2345/984.

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Thesis advisor: Rudolph Hon
Thesis advisor: Yvette Kuiper
Chloride-based deicers (NaCl, CaCl2, MgCl2), also referred to as road salt, are the most common substances used in maintaining safe roadway surfaces during the winter months. Upon application, road salt reacts with the accumulated snow or ice to form brine equilibrium solutions along the liquidus line in the salt-water system. Dissolved salts dissociate, leading to increased concentrations of the respective ions in nearby soils, surface water, and groundwater. Of the ions present in road salt, chloride has the advantage of tracking all chloride deicers at the same time and since chloride ions are conservative tracers in soils it stays unaffected by ionic exchange interferences. This study explores the mechanisms of chloride return flows by investigating chloride dissolved loads, chloride concentrations in stream waters, seasonal patterns, and changes over the course of four years in two separate watersheds in Massachusetts with differing degrees of urbanization. The chloride tracking technique used in this study is based on calibrated chloride concentrations obtained from specific conductance signals recorded every 15 minutes by automatic recording systems at two locations, one in rural central Massachusetts and the other in urban eastern Massachusetts. These systems are maintained by the USGS, which also provide the simultaneously recorded stream flow datasets. The dissolved chloride load carried by each river is calculated for each single 15-minute interval by multiplying water volume with the corresponding chloride concentration, resulting in a total of over 34,000 data points per annum per site. Hydrograph separation techniques were used to separate dissolved load transported by each river into two separate flow components, event flow resulting from precipitation events, and baseflow resulting from groundwater discharge. Well defined hydrograph baseflow supported periods yield consistent chloride concentrations independent of the season at either urban or rural study sites. Comparison of direct runoff dissolved chloride loads with the total annual dissolved loads suggests that only a small fraction of the deicers actually removed during the overland runoff events and that a minimum of 60% of the total load discharged each year in both urban and rural systems is transported by groundwater. From groundwater recharge by brines rural watersheds are currently retaining as much as 95% of the total chloride applied to roadways each year while urban and suburban watersheds may only retain 75% of the total chloride applied to roadways each year. The increased retention of chloride in rural areas is likely due to the decreased amount of chloride transported during winter seasons as event flow compared to urban watersheds
Thesis (MS) — Boston College, 2009
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Geology and Geophysics
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Cimino, Joseph A. (Joseph Anthony). "Empirical mass balance calibration of analytical hydrograph separation techniques using electrical conductivity [electronic resource] / by Joseph A. Cimino." University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000213.

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Title from PDF of title page.
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Thesis (M.S.C.E.)--University of South Florida, 2003.
Includes bibliographical references.
Text (Electronic thesis) in PDF format.
ABSTRACT: Analytical baseflow separation techniques such as those used in the automated hydrograph separation program HYSEP rely on a single input parameter that defines the period of time after which surface runoff ceases and all streamflow is considered baseflow. In HYSEP, this input parameter is solely a function of drainage basin contributing area. This method cannot be applied universally since in most regions the time of surface runoff cessation is a function of a number of different hydrologic and hydrogeologic basin characteristics, not just contributing drainage area. This study demonstrates that streamflow conductivity can be used as a natural tracer that integrates the different hydrologic and hydrogeologic basin characteristics that influence baseflow response. Used as an indicator of baseflow as a component of total flow, streamflow conductivity allows for an empirical approach to hydrograph separation using a simple mass balance algorithm.
ABSTRACT: Although conductivity values for surface-water runoff and ground-water baseflow must be identified to apply this mass balance algorithm, field studies show that assumptions based on streamflow at low flow and high flow conditions are valid for estimating these end member conductivities. The only data required to apply the mass balance algorithm are streamflow conductivity and discharge measurements. Using minimal data requirements, empirical hydrograph separation techniques can be applied that yield reasonable estimates of baseflow. This procedure was performed on data from 10 USGS gaging stations for which reliable, real-time conductivity data are available. Comparison of empirical hydrograph separations using streamflow conductivity data with analytical hydrograph separations demonstrates that uncalibrated, graphical estimation of baseflow can lead to substantial errors in baseflow estimates.
ABSTRACT: Results from empirical separations can be used to calibrate the runoff cessation input parameter used in analytical separation for each gaging station. In general, collection of stream conductivity data at gaging stations is relatively recent, while discharge measurements may extend many decades into the past. Results demonstrate that conductivity data available for a relatively short period of record can be used to calibrate the runoff cessation input parameter used for analytical separation. The calibrated analytical method can then be applied over a much longer period record since discharge data are the only requirement.
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Donelan, Jack E. "Groundwater-Surface Water Interaction in the Kern River| Estimates of Baseflow from Dissolved Radon Analysis and Hydrograph Separation Techniques." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10841176.

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Geochemical mixing methods utilizing 222Rn and chloride and statistical hydrograph separation techniques were carried out in an attempt to understand baseflow dynamics in a section of the Kern River in the Sierra Nevada of Southern California. 222Rn has become a valuable tool for evaluating groundwater inflow to a river, particularly when groundwater and surface water have similar major ion geochemistry. When using geochemical methods it is important to minimize uncertainty through comparison with separate tracers and techniques, though this is complicated in this setting. Snow melt discharge and regulation of natural river flow cause hydrograph-based techniques to suffer from inaccuracies. Geochemical mixing using major ions and stable isotopes are complicated by the chemical similarity between surface water and groundwater. 222Rn is a powerful tool to elucidate this relationship in this setting if major uncertainties, like rate of radon degassing and parafluvial and hyporheic radon production can be constrained.

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Book chapters on the topic "HYDROGRAPH SEPARATION"

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Mujere, Never, and Saeid Eslamian. "Flood Hydrograph and Baseflow Separation Using the Web- Based Hydrograph Analysis Tool." In Flood Handbook, 419–32. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003262640-24.

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Hooper, Richard P., and Christine A. Shoemaker. "A Comparison of Chemical and Isotopic Hydrograph Separation." In Seasonal Snowcovers: Physics, Chemistry, Hydrology, 625–42. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3947-9_28.

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Dahak, Asma, and Hamouda Boutaghane. "New Use of Hydrograph Separation Method for Hydrological Process Identification." In Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources, 33–35. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01572-5_8.

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Tan, Zhongcheng, Baohong Lu, and Jiyang Wang. "Hydrograph Separations Based on Isotopicchemical Mixing Models." In Advances in Water Resources and Hydraulic Engineering, 231–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89465-0_43.

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"hydrograph separation." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 702. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_81976.

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"Hydrograph Analysis and Basef low Separation." In Handbook of Engineering Hydrology (Three-Volume Set), 328–45. CRC Press, 2018. http://dx.doi.org/10.1201/b16695-20.

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"Hydrograph Analysis and Basef low Separation." In Handbook of Engineering Hydrology, 327–44. CRC Press, 2014. http://dx.doi.org/10.1201/b15625-19.

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Li, F., J. Qian, Y. Li, and X. Chen. "Hydrograph separation simulation of karst springs recession in Jinan area, China." In Water-Rock Interaction. Taylor & Francis, 2007. http://dx.doi.org/10.1201/noe0415451369.ch245.

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Lopes, Aline Maraci, and Saraiva Okello. "Hydrograph separation using Tracers and Digital Filters to Quantify Runoff Components." In Improved Hydrological Understanding of a Semi-Arid Subtropical Transboundary Basin Using Multiple Techniques – The Incomati River Basin, 75–104. CRC Press, 2019. http://dx.doi.org/10.1201/9780429299537-5.

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Lopes, Aline Maraci, and Saraiva Okello. "Understanding Runoff Processes in a Semi-Arid Environment through Isotope and Hydrochemical Hydrograph Separations." In Improved Hydrological Understanding of a Semi-Arid Subtropical Transboundary Basin Using Multiple Techniques – The Incomati River Basin, 105–30. CRC Press, 2019. http://dx.doi.org/10.1201/9780429299537-6.

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Conference papers on the topic "HYDROGRAPH SEPARATION"

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Bao, Weimin, Tao Wang, Haiying Hu, and Simin Qu. "Discussion of Present Isotopic Hydrograph Separation (IHS) Method." In 2009 International Conference on Environmental Science and Information Application Technology, ESIAT. IEEE, 2009. http://dx.doi.org/10.1109/esiat.2009.317.

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Hu, Haiying, Weimin Bao, Guoru Huang, and Tao Wang. "Uncertainty Analysis of the Tracer-Based Hydrograph Separation Method." In 2010 Asia-Pacific Power and Energy Engineering Conference. IEEE, 2010. http://dx.doi.org/10.1109/appeec.2010.5449202.

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Kim, Chung-Soo, and Cho-rong Kim. "Parameter Estimation of Rainfall-Runoff Model Using Hydrograph Section Separation." In Green and Smart Technology 2015. Science & Engineering Research Support soCiety, 2015. http://dx.doi.org/10.14257/astl.2015.120.124.

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Amir P. Nejadhashemi, Joseph M. Sheridan, Adel Shirmohammadi, and Hubert J. Montas. "Improvement in Hydrograph Separation Estimation by Incorporating Hydrologic Characteristics of Watersheds." In 2005 Tampa, FL July 17-20, 2005. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2005. http://dx.doi.org/10.13031/2013.19803.

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Harris, Claire Lee Otelia, and Chuanhui Gu. "HYDROGRAPH SEPARATION TO DETERMINE STORM RUNOFF GENERATION IN AN URBAN WATERSHED IN THE SOUTHERN APPALACHIAN MOUNTAINS." In 66th Annual GSA Southeastern Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017se-290589.

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Johnson, Keira, Rosemary Carroll, Mark Raleigh, Kenneth H. Williams, Li Li, Holly Barnard, and Pamela Sullivan. "MIXING MODELS AND HYDROGRAPH SEPARATION REVEALS WESTERN US WATERSHEDS’ SUMMER FLOWS AND GROUNDWATER PROPORTIONS RESPOND QUICKLY TO INTERANNUAL SNOW VARIABILITY." In GSA Connects 2021 in Portland, Oregon. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021am-368543.

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Dutu, Florin, Laura Dutu, Irina Catianis, and Gabriel Iordache. "MORPHOLOGY AND WATER DYNAMICS OF CHANNEL BIFURCATION IN DELTAIC ENVIRONMENT." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/1.1/s01.003.

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Abstract:
The study presents a detailed analyse of the morpho-dynamic processes of the main two bifurcations of the Danube River within its delta, at Ceatal Izmail and Ceatal St. George. The first bifurcation of the Danube, called Ceatal Izmail; here the river divides into two distributaries: a northern one, the Chilia (Kilia), and a southern one, the Tulcea. Forking to the right at Ceatal Izmail (Mile 43), the Tulcea distributary stretches further to 17 km to the second main hydrographic knot Ceatal Sfantu Gheorghe (St. George) at Mile 33.84 (km 62.2). Here, the Tulcea branch divides into two main distributaries: Sulina on the left and Sfantu Gheorghe (St. George) on the right. More than a century ago, these two bifurcations were submitted to hydro-technical works producing morphological changes of the fluvial bed, as well as redistribution of water and sediment flows between the three main distributaries. The history, morphology and hydrodynamics were studied in detail. On each bifurcation, hydrological, sedimentological and morphological measurements were performed on nine crosssections distributed upstream and downstream of the bifurcation in August 2021. The bifurcation angles, the slope, the flow separation zones and the velocities were investigated to understand the distribution of the water flow and bed morphology of both bifurcations.
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Reports on the topic "HYDROGRAPH SEPARATION"

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Huff, D. D. An Evaluation of Two Hydrograph Separation Methods of Potential Use in Regional Water Quality Assessment. Office of Scientific and Technical Information (OSTI), January 1999. http://dx.doi.org/10.2172/814545.

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HYSEP: A Computer Program for Streamflow Hydrograph Separation and Analysis. US Geological Survey, 1996. http://dx.doi.org/10.3133/wri964040.

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