scholarly journals Characterizing River Baseflow Recession Using Linear Reservoir Model in Alang Watershed, Central Java, Indonesia

2020 ◽  
Vol 52 (1) ◽  
pp. 15
Author(s):  
Bokiraiya Okky Latuamury ◽  
Lydia Riekie Parera ◽  
Husein Marasabessy
Keyword(s):  
Hydrological Modeling ◽  
River Flow ◽  
Good Condition ◽  
Reservoir Model ◽  
Central Java ◽  
Recession Curve ◽  
Recession Curves ◽  
Aquifer Characteristics ◽  
The Individual ◽  
Linear Reservoir

Alang is a sub-watershed emptying into the Gajah Mungkur Reservoir in Wonogiri, Central Java Indonesia, with an area of 51.01 km2 and lithology composed of Baturetno Formation and Wonosari Formation. Baseflow is a major component of river flow during the dry season. Hence, the characterization of its recession becomes necessary, and it can be performed with innovation in baseflow hydrological modeling, that is, the recession curve. This study was designed to describe the distinctive features of baseflow recession using a linear reservoir model, which is depicted in individual and master recession curves. The baseflow recession in AlangSubwatershed was represented by a combination of varying initial recession discharge (Q0), α, and recession constants (Krb). The individual recession curves were typified by Q0=0.19-9.11, α= 0.089-0.243, and Krb=0.7843-0.9148. As for the master recession curve, it had Q0=9.99, α=0.085, and Krb=0.928. These results signify a sloping recession curve, meaning that the water storage and aquifer characteristics that store and transmit water in Alang Subwatershed are in good condition.

scholarly journals KAJIAN KEBERLANJUTAN ALIRAN DASAR SUNGAI MELALUI ANALISIS KURVA RESESI HIDROGRAF PADA DAS KEDUANG KABUPATEN WONOGIRI PROVINSI JAWA TENGAH

2017 ◽  
Vol 1 (3) ◽  
pp. 222
Author(s):  
Bokiraiya Latuamury ◽  
Hendrik S.E. Aponno ◽  
Miranda H. Hadijah
Keyword(s):  
River Basin ◽  
Water Storage ◽  
Reservoir Model ◽  
Recession Curve ◽  
Recession Curves ◽  
The Individual ◽  
Linear Reservoir ◽  
The Relationship ◽  
Groundwater Outflow ◽  
Recession Constant

The streamflow hydrograph recession curve notes that behavior of the relationship between the aquifer structure and dependencies with the groundwater outflow towards river basin channel. The recession behavior of river basin hydrographs will investigate to understand the hydrology processes of the river basin in the future. This research was conducted with the aim: to analyze the characteristics of the baseflow recession based on the parameters and coefficients of the recession, and the shape of the individual recession curve and the master recession curves both manually and through the processing of genetic algorithms using a linear reservoir model of hydrooffice software package recession curve (RC) 4.0. The results of the visualization of the recession curve shape of the watershed of the research shows there is a very interesting trend in the watershed storage process.The characteristics of the baseflow recession to research watershed with the recession curve slope describe the baseflow recession conditions, especially excellent water storage. The river basin of Keduang have the form of a relatively sloping recession curves, both individual and master recession curve with relatively high recession constant ranged between 0,80 – 0,90 have baseflow recession characteristic is excellent, i.e. the watershed water storage which is the higher volume of water storage.

scholarly journals ANALISIS KURVA RESESI ALIRAN DASAR MENGGUNAKAN MODEL RESERVOIR LINIER RECESSION CURVE HYDROOFFICE PADA DAS WURYANTORO KABUPATEN WONOGIRI PROPINSI JAWA TENGAH

2018 ◽  
Vol 7 (1) ◽  
pp. 26
Author(s):  
Bokiraiya Okky Latuamury
Keyword(s):  
River Basin ◽  
Water Storage ◽  
Base Flow ◽  
Recession Curve ◽  
Recession Curves ◽  
Master Recession Curve ◽  
Aquifer Characteristics ◽  
The Individual ◽  
The Relationship ◽  
Groundwater Outflow

The hydrograph recession curve expresses the theoretical relationship between the aquifer structure and the flow of groundwater flowing into the river basin channel. These theoretical relationships are often empirically depicted using the base flow recession curve. The hydrograph recession curve is commonly used to estimate the recessionary parameters, aquifer properties and to evaluate alternative hydrological hypotheses. The river basin hydrograph recession curve records the behavior of the relationship between the aquifer structure and its association with groundwater outflow to the river channel. This research was conducted with the aim: to analyze the characteristics of the baseflow recession based on the parameters and coefficients of the recession, and the shape of the individual recession curve and the master recession curve. The characteristics of the baseflow recession to research sub-watershed have the recession curves tend to sloped, describing the water storage well enough. The parameter Q0 (recession early), α and the recession constant Krb ranging from 0,80 – 0,90 for the individual and master recession curve in all three research sub-watershed. This calculation result indicates that the recession characteristics in three research sub-watershed have the condition of water storage is excellent, because they are supported by the aquifer characteristics dominated by the geological structures are more permeable (porous).

scholarly journals Using the nonlinear aquifer storage–discharge relationship to simulate the base flow of glacier- and snowmelt-dominated basins in northwest China

2013 ◽  
Vol 17 (9) ◽  
pp. 3577-3586 ◽  
Author(s):  
R. Gan ◽  
Y. Luo
Keyword(s):  
Hydrological Modeling ◽  
Assessment Tool ◽  
Northwest China ◽  
Base Flow ◽  
Low Flow ◽  
Aquifer Storage ◽  
Groundwater Aquifers ◽  
Recession Curves ◽  
The One ◽  
Linear Reservoir

Abstract. Base flow is an important component in hydrological modeling. This process is usually modeled by using the linear aquifer storage–discharge relation approach, although the outflow from groundwater aquifers is nonlinear. To identify the accuracy of base flow estimates in rivers dominated by snowmelt and/or glacier melt in arid and cold northwestern China, a nonlinear storage–discharge relationship for use in SWAT (Soil Water Assessment Tool) modeling was developed and applied to the Manas River basin in the Tian Shan Mountains. Linear reservoir models and a digital filter program were used for comparisons. Meanwhile, numerical analysis of recession curves from 78 river gauge stations revealed variation in the parameters of the nonlinear relationship. It was found that the nonlinear reservoir model can improve the streamflow simulation, especially for low-flow period. The higher Nash–Sutcliffe efficiency, logarithmic efficiency, and volumetric efficiency, and lower percent bias were obtained when compared to the one-linear reservoir approach. The parameter b of the aquifer storage–discharge function varied mostly between 0.0 and 0.1, which is much smaller than the suggested value of 0.5. The coefficient a of the function is related to catchment properties, primarily the basin and glacier areas.

scholarly journals Analytical River Routing with Alternative Methods to Estimate Seepage

2019 ◽  
pp. 167-192
Author(s):  
Hubert J. Morel-Seytoux
Keyword(s):  
River Flow ◽  
Alternative Methods ◽  
Accurate Estimation ◽  
Adjacent Cell ◽  
Reservoir Model ◽  
River Stage ◽  
Physically Based ◽  
Linear Reservoir ◽  
River Routing

Knowledge of flow exchange between surface and groundwater is of great importance for use of water resources. The determination of seepage between a stream and an underlying aquifer requires an accurate estimation of the river stage and of the head in the aquifer. An approach is presented to estimate analytically river flow and stage while using the SAFE conductance to calculate the seepage.  A major contribution of this article lies in the methodology for river routing with its use of a modified Linear Reservoir model.  The parameter C is related to discharge based on Manning’s equation. That relation breathes into an empirical model a dynamic character. A second major contribution is to show that it is possible to simultaneously calculate river stage and aquifer head in the aquifer cell that contains the river.  As a result iteration is not necessary to estimate that river cell head as river stage changes, as opposed to what is usually done in most numerical groundwater models.  Iteration is still needed for the adjacent cells to the river cell.  Because the influence of a change in the adjacent cell head on the river cell head is much delayed and attenuated the iteration is not sensitive to that change. A goal of this document is to show how that method can be used within a simple physically based routing procedure [1] to estimate the river stage that has a definite influence on seepage.

scholarly journals Using the nonlinear aquifer storage–discharge relationship to simulate the baseflow of glacier and snowmelt dominated basins in Northwest China

2013 ◽  
Vol 10 (4) ◽  
pp. 5535-5561
Author(s):  
R. Gan ◽  
Y. Luo
Keyword(s):  
Hydrological Modeling ◽  
Northwest China ◽  
Assessment Tools ◽  
Aquifer Storage ◽  
Reservoir Models ◽  
Groundwater Aquifers ◽  
Recession Curves ◽  
The One ◽  
Linear Reservoir ◽  
Relation Approach

Abstract. Baseflow is an important component in hydrological modeling. This process is usually modeled by using the linear aquifer storage–discharge relation approach, although the outflow from groundwater aquifers is nonlinear. To identify the accuracy of baseflow estimates in rivers dominated by snow and/or glacier melt in arid and cold northwestern China, a nonlinear storage–discharge relationship for use in SWAT (Soil Water Assessment Tools) modeling was developed and applied to the Manas River basin in the Tianshan Mountains. Linear reservoir models and a digital filter program were used for comparisons. Meanwhile, numerical analysis of flow recession curves from 78 river gauge stations revealed variation in the coefficients of the nonlinear relationship. It was found that the nonlinear reservoir model can improve the streamflow simulation, especially for low-flows. The highest Nash–Sutcliff efficiency and lowest Percent Bias were obtained when compared to the one- or two-linear reservoir approach. The exponent b of the aquifer storage–discharge function varied mostly between 0.0 and 0.1, which is much smaller than the suggested value of 0.5. The coefficient a of the function is related to catchment properties, primarily the basin and glacier areas.

ECOLOGY AND SUSTAINABLE DEVELOPMENT IN LOCAL BUSINESS:SIMULATION OF LOW IMPACT DEVELOPMENT IN SURAKARTA REGENCY

2018 ◽  
Vol 4 (1) ◽  
pp. 32-38
Author(s):  
Bhimo Rizky Samudro ◽  
Yogi Pasca Pratama
Keyword(s):  
Water Resources ◽  
Water Resources Management ◽  
River Flow ◽  
Low Impact Development ◽  
Development Model ◽  
Business Activity ◽  
Resources Management ◽  
Central Java ◽  
Specific Culture ◽  
Central Java Province

This paper will describe the function of water resources to support business activities in Surakarta regency, Central Java province. Surakarta is a business city in Central Java province with small business enterprises and specific culture. This city has a famous river with the name is Bengawan Solo. Bengawan Solo is a River Flow Regional (RFR) to support business activities in Surakarta regency. Concious with the function, societies and local government in Surakarta must to manage the sustainability of River Flow Regional (RFR) Bengawan Solo. It is important to manage the sustainability of business activity in Surakarta regency.   According to the condition in Surakarta regency, this paper will explain how the simulation of Low Impact Development Model in Surakarta regency. Low Impact Development is a model that can manage and evaluate sustainability of water resources in River Flow Regional (RFR). Low Impact Development can analys goals, structures, and process water resources management. The system can also evaluate results and impacts of water resources management. From this study, we hope that Low Impact Development can manage water resources in River Flow Regional (RFR) Bengawan Solo.  

scholarly journals Estimated rate of karst aquifer development by MRC analysis and flood hydrograph components at Guntur Springs, Gunungsewu Karst Area, Indonesia

2020 ◽  
Vol 200 ◽  
pp. 02007
Author(s):  
Muhammad Naufal ◽  
Tjahyo Nugroho Adji ◽  
Ahmad Cahyadi ◽  
Eko Haryono ◽  
Margaretha Widyastuti ◽  
...  
Keyword(s):  
Flow System ◽  
Karst Aquifer ◽  
Flow Characteristics ◽  
Karst Area ◽  
Primary Input ◽  
Stable Component ◽  
Recession Curves ◽  
Flood Hydrograph ◽  
Aquifer Characteristics ◽  
One Year

Understanding the stage of karst aquifer development (karstification) is of vital importance because this parameter can reflect the character of flow system release, from which relevant management patterns are derived. Master Recession Curve (MRC) construction is considered ideal for identifying at which stage karstification works because MRC relies on recession curves as its primary input. Recession curves are the most stable component of flow hydrographs in representing aquifer characteristics. The study focused on springs located in a karst hydrogeological subsystem, namely, Guntur Spring in the Panggang Hydrogeological Subsystem (Gunungsewu Karst Area). It was designed to determine (1) the flow characteristics and (2) the degree of karst aquifer development at Guntur Spring. It utilized a one-year flow hydrograph with a 30-minute logging interval as the main data. The flood hydrograph showed that a fissure system dominated the flow characteristics. Moreover, the MRC construction results indicated that the karstification level at Guntur Spring was 5.0, confirming the dominant fissure system and also signs of the recent development of conduit flows.

scholarly journals Ideal point error for model assessment in data-driven river flow forecasting

2012 ◽  
Vol 16 (8) ◽  
pp. 3049-3060 ◽  
Author(s):  
C. W. Dawson ◽  
N. J. Mount ◽  
R. J. Abrahart ◽  
A. Y. Shamseldin
Keyword(s):  
River Flow ◽  
Ideal Point ◽  
Model Performance ◽  
Model Assessment ◽  
River Flow Forecasting ◽  
The Individual ◽  
Measure Of Performance ◽  
Individual Metrics ◽  
Naive Model ◽  
The Ideal

Abstract. When analysing the performance of hydrological models in river forecasting, researchers use a number of diverse statistics. Although some statistics appear to be used more regularly in such analyses than others, there is a distinct lack of consistency in evaluation, making studies undertaken by different authors or performed at different locations difficult to compare in a meaningful manner. Moreover, even within individual reported case studies, substantial contradictions are found to occur between one measure of performance and another. In this paper we examine the ideal point error (IPE) metric – a recently introduced measure of model performance that integrates a number of recognised metrics in a logical way. Having a single, integrated measure of performance is appealing as it should permit more straightforward model inter-comparisons. However, this is reliant on a transferrable standardisation of the individual metrics that are combined to form the IPE. This paper examines one potential option for standardisation: the use of naive model benchmarking.

scholarly journals THE EFFECT OF POLIOMYELITIS VIRUS ON HUMAN BRAIN CELLS IN TISSUE CULTURE

1955 ◽  
Vol 102 (1) ◽  
pp. 29-36 ◽  
Author(s):  
M. J. Hogue ◽  
R. McAllister ◽  
A. E. Greene ◽  
L. L. Coriell
Keyword(s):  
Tissue Culture ◽  
Human Brain ◽  
Cell Body ◽  
Good Condition ◽  
Fetal Brain ◽  
Adult Brain ◽  
Brain Cells ◽  
Poliomyelitis Virus ◽  
The Individual ◽  
The Brain

Poliomyelitis virus I, Mahoney strain, affected human brain cells grown in tissue cultures usually causing death of the cells in 3 days. The neurons reacted in different ways to the virus, some died with their neurites extended, others contracted one or more of their neurites. Terminal bulbs were frequently formed at the tips of the neurites when they were being drawn into the cell body. The final contraction of the cell body and the change into a mass of granules were often very sudden. Vacuoles often developed in the neuron. There was no recovery. Astrocytes, oligodendroglia, and macrophages were affected by the virus but not as quickly as the neurons. The age of the tissue culture was not a factor when the cells were in good condition. The age of the individual donor of the brain tissue was a factor; the fetal brain cells appeared to be more sensitive to the virus than the adult brain cells. The fetal neurons often reacted ½ hour after inoculation while the adult neurons reacted more slowly, 2 to 24 hours after inoculation. All these changes seemed to be caused by virus infection because they were prevented by specific antiserum or by preheating the virus.

Implementation of Drinking Water Supply Programs And Sanitation Community Based (PAMSIMAS) (at Blora District, Blora Regency, Central Java)

2020 ◽  
Vol 7 (8) ◽  
pp. 255-262
Author(s):  
Munawar Noor ◽  
Christine Diah ◽  
Pratiwi Tedjo
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Program Implementation ◽  
Public Awareness ◽  
Water Sources ◽  
Raw Water ◽  
Delegation Of Authority ◽  
Central Java ◽  
Sample Technique ◽  
The Individual

This research was initiated from the Pamsimas program targets have not yet been achieved. The causes were limited water sources and raw water supply, sanitation and hygiene behavior, public awareness of the importance of healthy living behavior was low. This study was to describe and analyze the implementation of the Pamsimas program and the supporting/inhibiting factors of the Program. This study used a qualitative approach by selecting key-informants based on a purposive sample technique. The results showed that the the implementation of the Pamsimas Program in Blora Sub-district was not optimal in terms of the variables as a prerequisite for program implementation. These prerequisites tend to be rigid, making it difficult for program implementers in the field to make decisions that are not included in the standard operational procedures (SOP). On the other hand, the individual and community behavior and participatory to the program in supporting the provision of clean water to be positiveBesides that the factors of limited water sources and raw water supply, unsafe sanitation and drinking water remained unsolved. Recommendations of the conclusions of the study are the delegation of authority related to the bureaucratic structure, especially the standard operating procedures (SOP) and the absence / scarcity of raw water sources for clean watethat needs attention to program managers in the field. 

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