Parametric Studies on Saltwater Intrusion into Coastal Aquifers for Anticipate Sea Level Rise

Priyanka, B N; Mahesha, A.

doi:10.1016/j.aqpro.2015.02.015

Cited by 21 publications

(11 citation statements)

References 2 publications

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“…3b. This is supported with published work on the relationship between geological fractures and offshore springs occurrence and their importance to estimate groundwater discharge into sea, when groundwater table is higher than sea level, (Postel et al 2000), and ( Priyanka, et al 2015). …”

Section: Seawater Intrusions and Soil Salinizationsupporting

confidence: 80%

Assessment of Forest and Juniperus Phoenicea Decline in Al Jabal Al Akhdar Using NDVI-Remote Sensing and GIS Data (2006-2013)

Suleiman¹,

Mohamed²,

Hamad³

et al. 2016

International Journal of Remote Sensing Applications

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Al Jabal al Akhdar, Locally known as the Green Mountain, located in Cyrenaica on the north east coast of Libya. It is a limestone plateau with maximum altitudes of about 900 meters, holds the highest plant density and species diversity within the country. Among these plants is the Juniperus phoenicea (JP) which covers about 70% of this mountain. It has been sharply deteriorated by unidentified causes over large scales. In this work, we have used remote sensing and GIS data to monitor vegetation vigor variations and study the drought related issues to forest and JP decline in the this area. The analysis of the collected data involved Topological, Geological and Geographical (TGG) data modelling over the selected area and within a period of eight years from 2006 to 2013. We have included two main data sets among few sets of satellite images that were employed in this study. The first data set was from the updated version of Shuttle Radar Topography Mission (SRTM) DEM of ~90 m spatial resolution and the second data set from Landsat 7 and Landsat 8 Level 1T images of 30 m spatial resolution. The collected data were used to construct the images and figures, to monitor and map the forest and JP decline through the normalized difference vegetation index (NDVI) and, then to illustrate the expected reasons and attributes for this decline. The study attributes the decline due to several specific indicators related to TGG inter-related factors including; altitude, slope, aspect, drainage pattern, topographic curvature, seawater intrusion, wind and soil erosions. The results were consistent and in a good agreement with several published data on the effect of topography, geology and geography on vegetation covers of similar terrain regions.

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Section: Seawater Intrusions and Soil Salinizationsupporting

confidence: 80%

Assessment of Forest and Juniperus Phoenicea Decline in Al Jabal Al Akhdar Using NDVI-Remote Sensing and GIS Data (2006-2013)

Suleiman¹,

Mohamed²,

Hamad³

et al. 2016

International Journal of Remote Sensing Applications

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“…The use of coastal groundwater for drinking, agriculture or industry is however globally compromised by the salinization problem (Ahmed et al, 2017;Argamasilla et al, 2017;Himi et al, 2017). Progressing saltwater intrusion into freshwater aquifers due to over-abstraction have prompted global alert and concern (Ahmed, 2017;Priyanka and Mahesha, 2015;Sonkamble et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Drivers, patterns and velocity of saltwater intrusion in a stressed aquifer of the East African coast: Joint analysis of groundwater and geophysical data in southern Kenya

Oiro

Comte

2019

Journal of African Earth Sciences

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Fresh groundwater resources in coastal East Africa are crucial for the region's socioeconomic development but are under threat of salinization caused by changes in recharge patterns and increasing abstraction. With the aim of establishing the drivers behind saltwater intrusion and its current spatial extent, we studied the Kenyan South Coast aquifer, a representative, strategic aquifer under increased pressure. Investigations included electrical resistivity tomography (ERT) surveys and in-situ groundwater measurements (water table and basic quality) together with the analysis of available longterm climatic and borehole monitoring data. Over the last 40 years, groundwater electrical conductivity values at the well field increased by about three times and groundwater levels declined by 1 to 3 m over the last decade. When put in perspective with the long-term climate (rainfall, temperature) and abstraction records, these trends in groundwater appear to be primarily driven by increased borehole abstraction (+400 m 3 /day per year in average), whereas observed increasing temperature (+0.02 ℃ per year) and decreasing rainfall (-0.8 mm per year) could potentially act as a secondary control through reduced recharge. However the low statistical significance obtained for both rainfall and temperature trends over the observation period suggests that no clear conclusion can be made with regards to longterm climate impact on groundwater. Groundwater quality mapping showed that proximity to the ocean, ACCEPTED MANUSCRIPT presence of abstraction well-fields and regional geology control groundwater salinity patterns at regional scale. Locally, geophysical data showed that, saltwater intrusion spatial patterns are controlled by local aquifer lithology, groundwater abstraction and freshwater recharge in floodplains. Comparison with previous (1984) resistivity data showed that the saltwater front has advanced toward the well-field by up to 2 km and rose by up to 80 m over the last 30 years, which corresponds to a maximal velocity of about 60 m/y horizontally and 2 m/y vertically. Implementation of groundwater management strategies such as sustainable groundwater exploitation, sourced alternative water supply, and managed aquifer recharge are required to mitigate the effects of seawater intrusion along the East African coastal strip.

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“…Generally, the source of freshwater that recharge coastal aquifers are direct from precipitation, river or from irrigation. As it is located near the coastline, groundwater in the coastal aquifer is vulnerable to saltwater intrusion phenomenon due to global sea level rise and overpumping [2][3][4][5]. Other contributor for the rise of salinity in coastal aquifer is suggested to be due to meteoric origin, water-rock interaction, salts from irrigation, wastewater, road salt and gypsum applied to enhance agricultural soil quality [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Temporal Variation of Coastal Groundwater Quality in East Coast of Terengganu, Malaysia

Hairoma

Gasim

Toriman³

et al. 2018

IJET

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Coastal groundwater is extremely vulnerable to saltwater contamination. This study was conducted to investigate the potential contamination of saltwater into coastal groundwater temporally. Data was obtained from PT000017 monitoring well from 2006 to 2012. Nine parameters of water quality were involved for data analyses. Two main diagrams used for data analyses are piper diagram and hydrochemical facies evolution diagram (HFE-D). All parameters were plotted to produce a piper diagram that determine the water type between different seasons. During wet season, groundwater samples are located in domain III that represent mixed Ca-Na-HCO3 water type; 2007 groundwater sample was located in domain I, represent Ca-HCO3 water type and during 2008 groundwater sample was located in domain II, represent Na-Cl water type. During dry season, groundwater samples are located in domain II that represent mixed Ca-Na-HCO3 water type meanwhile, 2009 and 2011 groundwater samples are located in domain I, represent Ca-HCO3 water type. Subsequently, HFE-D diagram was produced to determine the evolution process of salinization or freshening of coastal groundwater. In this study, all of groundwater samples were in freshening stage except during dry season 2007 groundwater sample was in the phase of saltwater intrusion.

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Parametric Studies on Saltwater Intrusion into Coastal Aquifers for Anticipate Sea Level Rise

Cited by 21 publications

References 2 publications

Assessment of Forest and Juniperus Phoenicea Decline in Al Jabal Al Akhdar Using NDVI-Remote Sensing and GIS Data (2006-2013)

Assessment of Forest and Juniperus Phoenicea Decline in Al Jabal Al Akhdar Using NDVI-Remote Sensing and GIS Data (2006-2013)

Drivers, patterns and velocity of saltwater intrusion in a stressed aquifer of the East African coast: Joint analysis of groundwater and geophysical data in southern Kenya

Temporal Variation of Coastal Groundwater Quality in East Coast of Terengganu, Malaysia

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