Study of influence of terrain and climatic factors on groundwater-level fluctuation in a minor river basin using GIS

Radhakrishnan, Nisha; Elango, L.

doi:10.1007/s11806-011-0530-z

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…Over the last decades, Geographical Information Systems (GIS) and Digital Elevation Models (DEM) have been widely used to study the relationships between topographic and ecological features of different landscapes, including river systems [15][16][17][18][19][20][21]. DEM derivatives related to species occurrence [22] and vegetation diversity [23] are also analyzed.…”

Section: Introductionmentioning

confidence: 99%

Assessment of flora diversity in a minor river valley using ecological indicator values, Geographical Information Systems and Digital Elevation Models

Czarnecka

Chabudziński

2013

Open Life Sciences

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Abstract:Ellenberg indicator values (EIV) have been widely used to estimate habitat variables from floristic data and to predict vegetation compositionbasedonhabitatproperties.GeographicalInformationSystems(GIS)andDigitalElevationModels(DEM)arevaluable toolsforstudyingtherelationshipsbetweentopographicandecologicalcharactersofriversystems.A3-meterresolutionDEMwas derived for a.3-km-longbreaksectionoftheSzumRiver(SEPoland)froma1:10,000topographicmap.Dataonthediversityand ecological requirements of the local vascular flora were obtained while making floristic charts for 32 sections of the river valley (each200 mlong)andphysicalandchemicalsoilmeasurements;next,thedataweretranslatedintoEIV.Thecorrelationsofthe primaryandsecondarytopographicattributesofthevalley,speciesrichness,andEIV(adaptedforthePolishvascularflora)were assessedforallspeciesrecognizedineachvalleysection.Thetotalareaandproportionofaflatarea,meanslope,slopecurvature, solar radiation (SRAD), and topographic wetness index (TWI) are the most important factors influencing local flora richness and diversity.Thehighestcorrelationswerefoundforthreeecologicalindicators,namelylight,soilmoisture,andsoilorganiccontent. TheDEMseemstobeusefulindeterminationofcorrelationsbetweentopographicandecologicalattributesalongaminorrivervalley.©VersitaSp.zo.o.

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Section: Introductionmentioning

confidence: 99%

Assessment of flora diversity in a minor river valley using ecological indicator values, Geographical Information Systems and Digital Elevation Models

Czarnecka

Chabudziński

2013

Open Life Sciences

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“…An analysis of the effect of climate change on the groundwater system can be found in the paper of Woldeamlak et al (2007) taking into account that an appearance of drought may be treated as a succession of climatic disturbances. After Allen et al, (2004), Apaydin (2010), Loáiciga (2003), Okkonen et al, (2010), Radhakrishnan and Elango (2011) or Buczynski and Wcislo (2013), it is evident that climate change may have a negative impact on groundwater resources and shallow aquifers are more susceptible to changes in resources and fluctuations of the groundwater table. These studies also proved that shallow aquifers are affected by local climate changes, whereas deep aquifers are affected only by regional changes.…”

Section: Resultsmentioning

confidence: 99%

Long-term monitoring and GIS based determination of groundwater drought propagation, the Lower Silesia region, SW Poland

Gurwin

2014

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resources sustainability under climate change, drought and increased usage was carried out by El-Kadi et al. (2014). While Appleyard and Cook (2009) paid attention to the problem of acidification and base cation depletion exacerbated by drought and groundwater withdrawal in Western Australia. This paper focuses on the problem of groundwater exploitation and mining drainage influencing decrease of water level during extreme conditions of drought periods taking into account that groundwater is the major source of potable water supply in the study area. Within the hydrological cycle, groundwater is normally the last to react to a drought situation, unless surface water is mainly fed by groundwater. Also, in deep aquifers the lag between a meteorological and a groundwater drought may amount to months or even years (Tallaksen and van Lanen, Eds., 2004; Calow et al. 1997; Rutulis 1987). That is due to a recharge process by indirect leakage of water to deep horizons from a shallow aquifer that is supplied from precipitation. When a meteorological drought appears as an immediate response in an unconfined aquifer the effects on deep aquifers are far postponed. That is why it is so difficult to establish clear and reliable ways of hydrogeological drought interpretation. It would be important to find out an optimal strategy for identifying relationships between the number of elements affecting the drought and the effective groundwater drought risk estimation, taking into account the deeper usable aquifers. However, it must be considered that in the mountain areas the first shallow aquifer is of high importance as well. Having the results of drought investigation, it is possible to establish some general indicative indicators dependent on frequency of the drought occurrence although this is simplified by the fact that it should be straightforward enough to setup in practice. Materials and methods Study area The study area is located in the south western Poland, in the region of Lower Silesia, occupying a territory administered by the Regional Water Management Board (RWMB) in Wroclaw. The southernmost part is in the Sudety Mountains which are divided into the Sudety Foreland, the Western Sudety, the Central Sudety, and the Eastern Sudety. The massif is approx. 300 km long and 50 km wide situated on the Polish-Czech border and the main range trends from NW to SE. It is characterized by a system of long ridges with gentle and flat plateaus and, domed peaks, broken through by valleys. More than Droughts may be caused by both natural and anthropogenic factors and delimitation of them is crucial for identification of exposed areas. This study concentrated on the application of the threshold level method combined with GIS modelling applied to hydrogeological drought characterization. The first step was to define groundwater drought periods and analysis of drought intensity and duration based on long-term monitoring data from points evenly spaced within the study area. Then the distribution of hydrogeological drought intensity was i...

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“…Previous studies (Druzkowski, 2001;Loáiciga, 2003;Woldeamlak et al, 2007;Apaydin, 2009;Radhakrishnan and Elango, 2011) clearly indicate that potential climate change may have a negative impact on groundwater resources. Results of model studies in the case of a dryyear scenario predict that the Grote-Nete catchment area is likely to experience a drop in average annual groundwater levels equal to…”

Section: Discussionmentioning

confidence: 97%

“…Groundwater discharge areas have, nonetheless, decreased by 28%, which might lead to the gradual disappearance of swamps and marshes. While working on shallow aquifers in the Minor River Basin, Radhakrishnan and Elango (2011) found that the lowering of the groundwater table was most significant in areas far from the sea. By contrast, coastal regions experienced only very small variations in the volune of groundwater.…”

Section: Figure 3 Prognosis Of Water Table Lowering By Low Rechargementioning

confidence: 99%

Predicting climate-induced changes in groundwater resources on the basis of hydrogeological model research: Case study of the Carpathian flysch belt

Buczyński

Wcisło

2013

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have shown growth in the frequency, time of duration and intensity of heat waves, as well as a surge in the number of incidents of heavy rainfall. The number of days with precipitation exceeding 10-20 mm has risen, while a drop has been observed in the number of days when the volume of rainfall was lower than 5, 1 and 0.1 mm. During that period a marked increase in and continuous extension of the HWDI (heat wave duration index) could be discerned. The number of days with temperatures exceeding 20 o C has also risen.The authors of the IV IPCC Report predict that in the 21st century these trends will continue; in milder climates, this may lead to an increased frequency, duration and intensity of heat waves and a greater risk of droughts and heavy rainfall (Meehl et al., 2007). Between 1990 and 2100 the global temperature of the air is predicted to go up by 1-5.8 o C (Nyirfa and Harron, 2001;Showstack, 2001). Observations and prognoses concerning the changes are hotly debatated by the international community, as climate alterations may impair the infiltration of water, which in turn would have disastrous effects on groundwater and could diminish the yield of wells (Rivard et al., 2003; Tranberth et al., 2007; Apaydin, 2009). Long-term studies of groundwater levels and precipitation contributed to an increase in the number of reports, some of which concern Poland as well. Their aim is to analyse the alterations in the groundwater table that have occurred over an extended period of time. Apart from presenting patterns in the groundwater regime, the authors often attempt to plot visible trends in the occurring changes and determine their cause, usually with the use of elementary statistical parameters. Chelmicki's work concerning Poland (1986Poland ( , 1991, which include data from 1961-1980, have shown that the water table has risen in most of the country. More localised reports, such as Dynowska and Pietrygowa's (1978) from the upper river Vistula basin, Kazimierski's (1999) from the Masovian Plain or Guzik's et al. (1999) from the Cracow-Silesian Region, based on the analyses of data from up to 25-year-long periods, have also shown a rise in groundwater levels. According to the authors, this tendency may be a result of an increase in overall rainfall (Dynowska and Pietrygowa, 1978;Chelmicki, 1986Chelmicki, , 1991 combined with a decrease in groundwater exploitation (Guzik et al., 1999;Kazimierski, 1999). Dabrowski's (1997) analysis of the renewability of Greater Poland's tertiary groundwater body has shown, at the same time, the opposite, downward trend for the water table in the high plain of Sroda. In the years 1975-1982, the rate of water table lowering wasThe level of water in aquifers depends mostly on precipitation. However, recent research has shown that greater annual rainfall values do not necessarily trigger off an automatic increase in groundwater recharge. The lowering of the water table may result not only from lower precipitation, but also from intensification in evaporation and a decreased natural inf...

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Study of influence of terrain and climatic factors on groundwater-level fluctuation in a minor river basin using GIS

Cited by 6 publications

References 7 publications

Assessment of flora diversity in a minor river valley using ecological indicator values, Geographical Information Systems and Digital Elevation Models

Assessment of flora diversity in a minor river valley using ecological indicator values, Geographical Information Systems and Digital Elevation Models

Long-term monitoring and GIS based determination of groundwater drought propagation, the Lower Silesia region, SW Poland

Predicting climate-induced changes in groundwater resources on the basis of hydrogeological model research: Case study of the Carpathian flysch belt

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