Response of groundwater to climate variation: fluctuations of groundwater level and well yields in the Halacli aquifer (Cankiri, Turkey)

Apaydın, Ahmet

doi:10.1007/s10661-009-0976-8

Cited by 19 publications

(15 citation statements)

References 9 publications

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“…Shallow unconfined aquifers, such as those found in the study area, are characterized by groundwater levels less than 50 mbls [1]. In these types of aquifers, the response of groundwater levels to precipitation can happen during a relatively short period [12]. At Savelugu, Kadia, Kpataribogu and District Assembly, groundwater levels increase in response to wet-season precipitation, are at their highest levels approximately two to four months following peak wet-season precipitation, then decrease into the dry season.…”

Section: Study Area Backgroundmentioning

confidence: 92%

“…In this case, groundwater is not seasonably sustainable. Within the aquifer system, the consequences of groundwater fluctuation include alteration of groundwater flow regimes and changes in the volume and quality of groundwater resources available, while changes in precipitation, even at small scales, likely influence recharge patterns and the response of groundwater levels in aquifers [12]. When groundwater is pumped in excess of recharge, groundwater levels decline.…”

Section: Introductionmentioning

confidence: 99%

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Fluctuation of Groundwater Levels and Recharge Patterns in Northern Ghana

Lutz

Minyila²,

Saga³

et al. 2014

Climate

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Evaluating groundwater levels and recharge patterns is part of sustainably managing the water supply and predicting the possibility of water shortages, especially in light of climate change, extreme events (floods/droughts), increasing population and development. In the northern region of Ghana, groundwater is increasingly relied upon as a source of potable water for rural populations, but seasonal and inter-annual fluctuations of groundwater levels and recharge patterns are not always known. The fluctuation of groundwater levels on a seasonal basis shows that groundwater levels at all sites increase in response to seasonal precipitation. On an annual basis, all sites show an overall net decline of groundwater levels over the study period, which may be associated with below-average departures of precipitation during five of the seven study years. The variability of recharge patterns among five sites is attributed to the spatio-temporal variability of precipitation and hydrogeologic site uniqueness. The overarching potential benefit of this study is to facilitate OPEN ACCESS Climate 2015, 3 2 closing knowledge gaps and contribute to a foundation for a more robust evaluation of groundwater resources in the area, especially as more data become available.

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Section: Study Area Backgroundmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Fluctuation of Groundwater Levels and Recharge Patterns in Northern Ghana

Lutz

Minyila²,

Saga³

et al. 2014

Climate

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“…Finding a distinction between natural and human influence is not trivial, as is proven in hydrology [ Kassas , ; Panda etal ., ; Apaydin , ; Hoogland etal ., ; Kauffman and Vonck , ], and in other fields like, for example, vegetation science and land degradation [ Pechmann etal ., ; Evans and Geerken , ; Wessels etal ., ; De Beurs etal ., ]. A (water) manager needs to have information on the situation that would have occurred without human influence, the so‐called “naturalized situation”.…”

Section: Introductionmentioning

confidence: 99%

Making the distinction between water scarcity and drought using an observation‐modeling framework

Loon

Lanen

2013

Water Resources Research

247

143

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[1] Drought and water scarcity are keywords for river basin management in water-stressed regions. ''Drought'' is a natural hazard, caused by large-scale climatic variability, and cannot be prevented by local water management. ''Water scarcity'' refers to the long-term unsustainable use of water resources, which water managers can influence. Making the distinction between drought and water scarcity is not trivial, because they often occur simultaneously. In this paper, we propose an observation-modeling framework to separate natural (drought) and human (water scarcity) effects on the hydrological system. The basis of the framework is simulation of the situation that would have occurred without human influence, the ''naturalized'' situation, using a hydrological model. The resulting time series of naturalized state variables and fluxes are then compared to observed time series. As second, more important and novel step, anomalies (i.e., deviations from a threshold) are determined from both time series and compared. We demonstrate the use of the proposed observation-modeling framework in the Upper-Guadiana catchment in Spain. Application of the framework to the period 1980-2000 shows that the impact of groundwater abstraction on the hydrological system was, on average, four times as high as the impact of drought. Water scarcity resulted in disappearance of the winter high-flow period, even in relatively wet years, and a nonlinear response of groundwater. The proposed observation-modeling framework helps water managers in water-stressed regions to quantify the relative impact of drought and water scarcity on a transient basis and, consequently, to make decisions regarding adaptation to drought and combating water scarcity.Citation: Van Loon, A. F., and H. A. J. Van Lanen (2013), Making the distinction between water scarcity and drought using an observation-modeling framework, Water Resour.

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“…Comprehensive understanding of groundwater resource variations supports the conjunctive exploitation of groundwater (Apaydin 2010). In actuality, aquifer water level fluctuations are driven by numerous hydrological processes and properties that vary on temporal and spatial scales (Zhu et al 2011).…”

Section: Introductionmentioning

confidence: 97%

Barometric and tidal-induced aquifer water level fluctuation near the Ariake Sea

Liu

Shimada

Kagabu

et al. 2014

Environ Monit Assess

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Observations of water levels in coastal aquifers and corresponding tides coupled with meteorological variances near the Ariake Sea show that groundwater in this area mainly fluctuates with atmospheric and tidal variations. Tidal effects occur with semi-monthly, diurnal, or semi-diurnal periodicity, whereas the barometric influences commonly act in the low-frequency domain. Tidal and barometric effects in water levels are separable using wavelet techniques and can be evaluated statistically. Results show the following. (1) The tidal coefficients are 0.002-0.154, attenuating roughly exponentially from the seashore. The time lags in water levels increase linearly approximately with increasing inshore distance. Relations between tidal coefficients and time lags and the inshore distance indicate higher hydraulic diffusivity in the south aquifer, which was confirmed by the hydraulic property calibrations in analytical simulations. (2) Water levels related to meteorological phenomena fluctuate inversely according to barometric loading variation with time lags of 2-3 h. The effective barometric efficiencies are 0.022-0.12. Lower barometric influences were found in the south aquifer.

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Response of groundwater to climate variation: fluctuations of groundwater level and well yields in the Halacli aquifer (Cankiri, Turkey)

Cited by 19 publications

References 9 publications

Fluctuation of Groundwater Levels and Recharge Patterns in Northern Ghana

Fluctuation of Groundwater Levels and Recharge Patterns in Northern Ghana

Making the distinction between water scarcity and drought using an observation‐modeling framework

Barometric and tidal-induced aquifer water level fluctuation near the Ariake Sea

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