Assessment of drought impacts on semi-arid coastal aquifers of the Mediterranean

Kopsiaftis, George; Tigkas, Dimitris; Christelis, Vasileios; Vangelis, Harris

doi:10.1016/j.jaridenv.2016.10.008

Cited by 21 publications

(9 citation statements)

References 29 publications

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“…A drought index is one of the main approaches to drought monitoring and assessment (Miah, Abdullah, & Jeong, ). In recent years, many scholars have conducted extensive research on drought indices and achieved fruitful results (Abdullah, ; Dai, ; Kopsiaftis, Tigkas, Christelis, & Vangelis, ). The drought indexes are generally defined from a meteorological perspective, such as precipitation, evapotranspiration, and soil water, and among these indexes, the Palmer drought index (PDSI), the standardized precipitation index (SPI), and the standardized precipitation evapotranspiration Index (SPEI) are widely used.…”

Section: Introductionmentioning

confidence: 99%

A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI)

Pei

Liu

2019

Hydrological Processes

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A drought index is one of the main methods used for measuring drought and represents the basis of drought monitoring, early warning, and classification. On the basis of an analysis of the advantages and limitations of the Standardized Precipitation Evapotranspiration Index (SPEI), the Standardized Precipitation Crop Evapotranspiration Index (SPCEI), which is a drought index of rainfed agriculture, was constructed in this study. The applicable conditions of the SPCEI were then investigated, and the results showed that the SPCEI was suitable for dryland crops under non‐irrigated conditions in arid and semi‐arid areas. The difference between the SPEI and SPCEI is analysed. Compared with the SPEI, the SPCEI considers crop evapotranspiration and the crop growth stage and was found to be more suitable for monitoring agricultural drought. Qigihar, which is located in a semi‐arid area in western Heilongjiang Province, China, was then analysed as an example. The characteristics of the spatial and temporal variability of regional agricultural drought were analysed based on maize and soybean in dryland areas. The results for the different growth stages of maize and soybean showed that drought intensity is more serious in the initial stage in the middle part. In crop development, mid‐season and late season stage, the drought conditions gradually increased from north to south. The drought degree of the two crops at the initial stage gradually increased, and the drought degree at the crop development stage gradually decreased. The main reason is that precipitation gradually increases during the crop development stage.

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Section: Introductionmentioning

confidence: 99%

A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI)

Pei

Liu

2019

Hydrological Processes

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“…The groundwater hydrology model MODFLOW has been used for the simulation of groundwater flow and the estimation of the water balance of the Almyros aquifer. MODFLOW has been successfully applied in aquifer systems in Greece such as in the Lake Karla aquifer [16,53,55], in Eidomeni-Evzones region in Axios basin [56], in Moudania aquifer [57], on Thira aquifer in Santorini island [58,59], in Glafkos aquifer in Patras Gulf [60], in Cyclades [61], and in Messara aquifer system in Crete [62].…”

Section: Groundwater Flow Model Descriptionmentioning

confidence: 99%

“…SEAWAT has been successfully applied in coastal aquifer systems in Greece such as in Santorini island in Thira aquifer [58,59], in Cyclades [61], in Nea Moudania [57,77], in Glafkos aquifer in Gulf of Patras [60].…”

Section: Chloride Solute Transport and Dispersion Model Descriptionmentioning

confidence: 99%

An Integrated Modeling System for the Evaluation of Water Resources in Coastal Agricultural Watersheds: Application in Almyros Basin, Thessaly, Greece

Lyra

Λουκάς

Sidiropoulos

et al. 2021

Water

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This study presents an integrated modeling system for the evaluation of the quantity and quality of water resources of coastal agricultural watersheds. The modeling system consists of coupled and interrelated models, including (i) a surface hydrology model (UTHBAL), (ii) a groundwater hydrology model (MODFLOW), (iii) a crop growth/nitrate leaching model (REPIC, an R-ArcGIS-based EPIC model), (iv) a groundwater contaminant transport model (MT3DMS), and (v) a groundwater seawater intrusion model (SEAWAT). The efficacy of the modeling system to simulate the quantity and quality of water resources has been applied to the Almyros basin in Thessaly, Greece. It is a coastal agricultural basin with irrigated and intensified agriculture facing serious groundwater problems, such as groundwater depletion, nitrate pollution, and seawater intrusion. Irrigation demands were estimated for the main crops cultivated in the area, based on precipitation and temperature from regional weather stations. The models have been calibrated and validated against time-series of observed crop yields, groundwater table observations, and observed concentrations of nitrates and chlorides. The results indicate that the modeling system simulates the water resources quantity and quality with increased accuracy. The proposed modeling system could be used as a tool for the simulation of water resources management and climate change scenarios.

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“…Much above normal 2.5.2 Reconnaissance Drought Index (RDI) The Reconnaissance Drought Index (RDI) will be developed to approach the water deficit in a more accurate way, as a sort of balance between input and output in a water system (Kopsiaftis et al, 2017). It based both on cumulative precipitation (P) and potential evapotranspiration (PET), which are one measured (P) and one calculated (PET) determinant.…”

Section: Descriptions Of Drought Indices 251 Precipitation Decilesmentioning

confidence: 99%

Hydro-Metrological Drought Assessments along the Blue Nile River Basin in East Gojjam Zone

Dilnesa¹

2020

CER

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The Upper Blue Nile basin is less-explored in drought studies as compared to other river basins in Ethiopia and a shortage of particular basin drought monitoring system. The area founds in along a Blue Nile basin faced a recurrent drought conditions in several years ago. The main objectives of this study to investigate droughts along a Blue Nile basin in the east Gojjam zone. To evaluate the drought duration, severity, occurrence and risks it was used different indices. The results shows a hydrological drought was occurring in a frequent condition in partial areas of Shebel Berenta, Goncha siso enese and Enarg enawuga woreda. Based on 12-month timescale , the total number of drought events were identified in the area, using Reconnaissance drought index (RDI) during the period of analysis (1995-1996) and its values 100% drought and its ranges were highly sever. Considering the drought events in the stream flow drought index (SDI) the values indicates drought severity was existed in the

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Assessment of drought impacts on semi-arid coastal aquifers of the Mediterranean

Cited by 21 publications

References 29 publications

A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI)

A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI)

An Integrated Modeling System for the Evaluation of Water Resources in Coastal Agricultural Watersheds: Application in Almyros Basin, Thessaly, Greece

Hydro-Metrological Drought Assessments along the Blue Nile River Basin in East Gojjam Zone

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