Response of the groundwater system to changes in the Dead Sea level

Author(s):  
Yoseph Yechieli
Geomorphology ◽  
2002 ◽  
Vol 45 (1-2) ◽  
pp. 21-33 ◽  
Author(s):  
Marwan A Hassan ◽  
Micha Klein
Keyword(s):  
Dead Sea ◽  

2018 ◽  
Author(s):  
Ulrich Polom ◽  
Hussam Alrshdan ◽  
Djamil Al-Halbouni ◽  
Eoghan P. Holohan ◽  
Torsten Dahm ◽  
...  

Abstract. Near-surface geophysical imaging of alluvial fan settings is a challenging task, but crucial for understating geological processes in such settings. The alluvial fan of Ghor Al-Haditha at the southeast shore of the Dead Sea is strongly affected by localized subsidence and destructive sinkhole collapses, with a significantly increasing sinkhole formation rate since ca. 1983. A similar increase is observed also on the western shore of the Dead Sea, in correlation with an ongoing decline of the Dead Sea level. Since different structural models of the upper 50 m of the alluvial fan and varying hypothetical sinkhole processes have been suggested for the Ghor Al-Haditha area in the past, this study aimed to clarify the subsurface characteristics responsible for sinkhole development. For this purpose, high-frequency shear wave reflection vibratory seismic surveys were carried out in the Ghor Al-Haditha area along several crossing and parallel profiles with a total length of 1.8 km and 2.1 km in 2013 and 2014, respectively. The sedimentary architecture of the alluvial fan at Ghor Al-Haditha is resolved down to a depth of nearly 200 m in high-resolution, and is calibrated with the stratigraphic profiles of two boreholes located inside the survey area. The most surprising result of the survey is the absence of evidence for a thick (> 2–10 m) compacted salt layer formerly suggested to lie at ca. 35–40 m depth. Instead, seismic reflection amplitudes and velocities image with good continuity a complex interlocking of alluvial fan deposits and lacustrine sediments of the Dead Sea between 0–200 m depth. Furthermore, the underground of areas affected by sinkholes is characterized by highly-scattering wave fields and reduced seismic interval velocities. We propose that the Dead Sea mud layers, which comprise distributed inclusions or lenses of evaporitic chloride, sulphate, and carbonate minerals as well as clay silicates, become increasingly exposed to unsaturated water as the sea level declines, and are consequently destabilized and mobilized by both dissolution and physical erosion in the subsurface. This new interpretation of the underlying cause of sinkhole development is supported by surface observations in nearby channel systems. Overall this study shows that shear wave seismic reflection technique is a promising method for enhanced near-surface imaging in such challenging alluvial fan settings.


1870 ◽  
Vol 7 (69) ◽  
pp. 100-105
Author(s):  
G. Poulett Scrope
Keyword(s):  
Dead Sea ◽  
Dry Land ◽  

I Have been gratified by observing of late the appearance among geologists of a more general appreciation of the study of volcanic phenomena,—using that word in its broadest sense, as comprehending not merely the occasional outbursts of vapour, ashes, and lava, but also the action of those subterranean forces, to which alone we are indebted for the existence, now or in former times, of any dry land whatever above the dead sea-level at which the agents of denudation would otherwise maintain the surface of the globe.


2012 ◽  
Vol 88 ◽  
pp. 237-254 ◽  
Author(s):  
Yael Kiro ◽  
Yoseph Yechieli ◽  
Clifford I. Voss ◽  
Abraham Starinsky ◽  
Yishai Weinstein

Antiquity ◽  
1927 ◽  
Vol 1 (2) ◽  
pp. 197-203 ◽  
Author(s):  
Maitland
Keyword(s):  
Dead Sea ◽  
The Dead ◽  

The walls and hut circles which are known to the Bedouins as “the works of the old men” lie about 120 miles to the east of the Dead Sea, in a southern extension of the Jebel Druze range through which the Cairo-Baghdad air mail passes, in the neighbourhood of landing grounds F, G, and H.The Jebel Druze is a desolate range of mountains rising to from 2000 to 3000 feet above sea level. It consists of steep-sided flat-topped mountains of black basalt, the wadis and flat country between being covered with sand thickly besprinkled with huge black basalt boulders. Here and there the winter rains have formed lakes of sand which during the winter are morasses and during the summer hard flat glaring expanses of white sand, many as much as three miles long.


2010 ◽  
Vol 7 (6) ◽  
pp. 9661-9689
Author(s):  
D. E. Rosenberg

Abstract. Seven decades of extractions have dramatically reduced Jordan River flows, lowered the Dead Sea level, opened sink holes, and caused other environmental problems. The fix Jordan, Israel, and the Palestinians propose would build an expensive multipurpose canal from the Red Sea to the Dead Sea that would also generate hydropower and desalinated water. This paper compares the Red-Dead project to alternatives that may also raise the Dead Sea level. Hydro-economic model results for the Jordan-Israel-Palestinian inter-tied water systems show two restoration alternatives are more economically viable than the proposed Red-Dead project. Many decentralized new supply, wastewater reuse, conveyance, conservation, and leak reduction projects and programs in each country can together increase economic benefits and reliably deliver up to 900 MCM/year to the Dead Sea. Similarly, a smaller Red-Dead project that only generates hydropower can deliver large flows to the Dead Sea when the sale price of generated electricity is sufficiently high. However, for all restoration options, net benefits fall and water scarcity rises as flows to the Dead Sea increase. This finding suggests (i) each country has no individual incentive to return water to the Dead Sea, and (ii) outside institutions that seek to raise the Dead must also offer countries direct incentives to deliver water to the Sea besides building the countries new infrastructure.


2017 ◽  
Vol 13 (3) ◽  
pp. 416
Author(s):  
Arwa Ali Alhroot ◽  
Alen Fareed Alfanek ◽  
Muna Alkhushman ◽  
Amal Saad Eldeen Aljariri ◽  
Diana A. Ibrahim ◽  
...  

Background: people live at various areas of sea level may have different patterns of anti-hypertensive drugs. Such a relation has never been reported in Jordan. Study objectives: the current study investigated how the sea level will impact the prevalence of hypertension in these areas, and how will affect the pharmacological properties of such a population. Methodology: a cross-sectional study design was involved to collect data from study participants. A total of 1000 participants were randomly selected from the two study areas. 500 participants from each. Participants were matched for age and gender. Blood pressure were measured for all participants. Blood samples were withdrawn to investigate the level of angiotensin II. Data was collected through organizing a working excel sheet and was further analyzed through using SPSS version 20. Data was presented as means, standard deviations, frequencies and percentages. The relationships between variables were examined using independent T-test. Significance was measured at an alpha < 0.05. Study findings: the main findings of the present study were that the mean of SBP is significantly higher in the Dead Sea (122.42±10.53 mmHg) than the Sea level area (118.07±11.64 mmHg), (p=0.001). Another significant variable was MBP which its mean was 91.64 ± 8.90 mmHg in the Dead Sea and 89.84 ± 8.72 mm Hg. The difference in the mean was statistically significant (p=0.001). The level of angiotensin II was 8.84 ± 4.65pg/ml in the Dead Sea area and 11.21± 6.05pg/ml in the area of the Sea level. The difference in the mean of the two study areas was not statistically significant (p>0.05). Conclusions: although the level of angiotensin II was not significantly varied between the study areas, but its trend was to be higher in the Sea level area. It was surprised to have higher levels of SBP and MBP in the Dead Sea rather than the Seal level area. It can be implied that the therapeutic options of hypertensive drugs follow different patterns independent of angiotensin II pathways.


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