Geochemical evolution and timescale of seawater intrusion into the coastal aquifer of Israel

Sivan, Orit; Yechieli, Yoseph; Herut, Barak; Lazar, Boáz

doi:10.1016/j.gca.2004.07.023

Cited by 133 publications

(72 citation statements)

References 32 publications

(42 reference statements)

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“…Other studies can also support this assumption by showing that there is a significant hydraulic separation by clay layers between the described on-land sub-aquifers, resulting in different chemical composition, salinity and piezometric heads between these sub-aquifers (Nativ and Weisbrod 1994). The old ages of the groundwater in the lower sub-aquifers which exceed 10,000 years opposed to the young ages (approximately tens of years) in the upper sub-aquifers (Yechieli et al 2001(Yechieli et al , 2009Sivan et al 2005), imply to a restricted flow or stagnation in the lower sub-aquifers, possibly due to their blockage to the sea.…”

Section: Introductionmentioning

confidence: 87%

Numerical Simulation of Submarine Groundwater Flow in the Coastal Aquifer at the Palmahim Area, the Mediterranean Coast of Israel

Amir

Kafri

Herut

et al. 2013

Water Resour Manage

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The lower sub-aquifers of the Mediterranean coastal aquifer of Israel, at the Palmahim area, are hypothesized to be laterally blocked to connection with the sea, and thus to seawater intrusion. This is mostly due to the detection of fresh water bodies at these sub-aquifers. This study examine this hypothesis by using two dimensional numerical model simulations of the groundwater flow system at this area, which conducted in order to reveal which hydrogeological setting enables the existence of these fresh water bodies in the lower sub-aquifers and to assess the on-land pumping rates that will prevent their salinization. The hydrogeological settings were examined by steady state simulations followed by simulations of the last 15,000 years sea level changes. These simulations imply that the presence of fresh water in the lower sub-aquifer, whether blocked or connected to the sea, requires offshore separation between the upper and lower sub-aquifers. On-land pumping simulations, with a well located inside the lower sub-aquifers at the shoreline, show a maximum pumping rate of 250 m 3 /m strip width/year, hereafter m 2 /year, to prevent the salinization of the lower subaquifers. The various pumping scenarios revealed differences in salinization trends between the scenarios with impermeable separating layers and those with semi permeable layers. Scenarios with extreme pumping rates emphasize these differences, and together with field test, can allow assessing the amount of separation between the sub-aquifers.

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Section: Introductionmentioning

confidence: 87%

Numerical Simulation of Submarine Groundwater Flow in the Coastal Aquifer at the Palmahim Area, the Mediterranean Coast of Israel

Amir

Kafri

Herut

et al. 2013

Water Resour Manage

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“…Indeed, even if saltwater intrusion is a common problem for coastal aquifers (Chandrasekar et al, 2014;Han et al, 2014), and moreover in Mediterranean context (Petalas and Lambrakis, 2006;Sivan et al, 2005), no seawater intrusion is detected yet and the aquifer seems to be still protected from over abstraction despite an ever increasing pressure. It is nevertheless necessary to identify and quantify the different components of the local water balance to accurately evaluate the potential of the aquifer as a sustainable water resource in a semi-arid context.…”

Section: Aquifer Hydraulic Conductivity Estimations and Residence Timmentioning

confidence: 99%

Residence time, mineralization processes and groundwater origin within a carbonate coastal aquifer with a thick unsaturated zone

Santoni

Huneau

Garel

et al. 2016

Journal of Hydrology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…The CaCO 3 precipitation media were based on an artificial groundwater solution (AGW) representing the composition of Israel's coastal aquifer (Sivan et al, 2005) as follows: MgCl 2 (1 mM), MgSO 4 (1 mM), NaHCO 3 (2.56 mM), NaCl (14.35 mM), CaCl 2 (2.43 mM) and KCl (0.32 mM); total ionic strength: 31.5 mM. Two different precipitation media were prepared: (1) a full-strength medium, NBU, in which AGW was supplemented with 7 mM urea and 13 g L −1 NB and which provided B. subtilis with all the required nutrients but limited the growth of S. pasteurii due to the low urea concentration (Jahns et al, 1988); and (2) a one-thirdstrength medium, 1/3 NBU, which contained AGW supplemented with 7 mM urea and 4.34 g L −1 NB which limited the growth of B. subtilis due to lower nutrient availability.…”

Section: Caco 3 Precipitation Mediamentioning

confidence: 99%

Accelerated microbial-induced CaCO<sub>3</sub> precipitation in a defined coculture of ureolytic and non-ureolytic bacteria

Gat

Tsesarsky

Shamir³

et al. 2014

Biogeosciences

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Abstract. Microbial-induced CaCO 3 precipitation (MICP) is an innovative technique that harnesses bacterial activity for the modification of the physical properties of soils. Since stimulation of MICP by urea hydrolysis in natural soils is likely to be affected by interactions between ureolytic and non-ureolytic bacteria, we designed an experiment to examine the interactions between ureolytic and non-ureolytic bacteria and the effect of these interactions on MICP. An artificial groundwater-based rich medium was inoculated with two model species of bacteria, the ureolytic species Sporosarcina pasteurii and the non-ureolytic species Bacillus subtilis. The control treatment was inoculated with a pure culture of S. pasteurii. The following parameters were monitored during the course of the experiment: optical density, pH, the evolution of ammonium, dissolved calcium and dissolved inorganic carbon. The results showed that dissolved calcium was precipitated as CaCO 3 faster in the mixed culture than in the control, despite less favorable chemical conditions in the mixed culture, i.e., lower pH and lower CO 2− 3 concentration. B. subtilis exhibited a considerably higher growth rate than S. pasteurii, resulting in higher density of bacterial cells in the mixed culture. We suggest that the presence of the non-ureolytic bacterial species, B. subtilis, accelerated the MICP process, via the supply of nucleation sites in the form of non-ureolytic bacterial cells.

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Geochemical evolution and timescale of seawater intrusion into the coastal aquifer of Israel

Cited by 133 publications

References 32 publications

Numerical Simulation of Submarine Groundwater Flow in the Coastal Aquifer at the Palmahim Area, the Mediterranean Coast of Israel

Numerical Simulation of Submarine Groundwater Flow in the Coastal Aquifer at the Palmahim Area, the Mediterranean Coast of Israel

Residence time, mineralization processes and groundwater origin within a carbonate coastal aquifer with a thick unsaturated zone

Accelerated microbial-induced CaCO<sub>3</sub> precipitation in a defined coculture of ureolytic and non-ureolytic bacteria

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Geochemical evolution and timescale of seawater intrusion into the coastal aquifer of Israel

Cited by 133 publications

References 32 publications

Numerical Simulation of Submarine Groundwater Flow in the Coastal Aquifer at the Palmahim Area, the Mediterranean Coast of Israel

Numerical Simulation of Submarine Groundwater Flow in the Coastal Aquifer at the Palmahim Area, the Mediterranean Coast of Israel

Residence time, mineralization processes and groundwater origin within a carbonate coastal aquifer with a thick unsaturated zone

Accelerated microbial-induced CaCO&lt;sub&gt;3&lt;/sub&gt; precipitation in a defined coculture of ureolytic and non-ureolytic bacteria

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Product

Resources

About

Accelerated microbial-induced CaCO<sub>3</sub> precipitation in a defined coculture of ureolytic and non-ureolytic bacteria