Aquifer Response to Estuarine Stream Dynamics

Yehuda Shalem; Yoseph Yechieli; Barak Herut; Yishai Weinstein

doi:10.3390/w11081678

Aquifer Response to Estuarine Stream Dynamics

Water ◽

10.3390/w11081678 ◽

2019 ◽

Vol 11 (8) ◽

pp. 1678 ◽

Cited By ~ 2

Author(s):

Yehuda Shalem ◽

Yoseph Yechieli ◽

Barak Herut ◽

Yishai Weinstein

Keyword(s):

Eastern Mediterranean ◽

Mediterranean Coast ◽

Low Permeability ◽

High Permeability ◽

Dynamic Changes ◽

Groundwater Levels ◽

Groundwater Dynamics ◽

Large Fluctuations ◽

History Of

While seawater intrusions are widely discussed, the salinization of coastal aquifers via narrow rivers is hardly documented. This study investigates groundwater dynamics in an aquifer next to an estuarine stream on the eastern Mediterranean coast. Groundwater levels and salinization patterns were examined as a response to dynamic changes in estuary water, both in low-and high-permeability aquifer units. In the high-permeability unit, the extent of salinization was relatively constant, reaching a distance of at least 80 m from the river, with no long-term changes in fresh-saline interface depth, indicating that the system is in a quasi-steady state. Groundwater salinity in the low-permeability unit showed frequent and large fluctuations (up to 36 and 22 at 5 and 20 m from the river, respectively). We suggest that the river may have a more immediate impact on a low-permeability than on a high-permeability aquifer. This is dependent on the history of seawater encroachments to the river, which are better preserved in the low-permeability unit, and on the hydrogeology of this unit, where sand lenses can serve as high-permeability conduits. However, this unit can efficiently prevent a large extent of salinization of the regional coastal aquifer by the estuary water.

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Contamination History of Lead and Other Trace Metals Reconstructed from an Urban Winter Pond in the Eastern Mediterranean Coast (Israel)

Environmental Science & Technology ◽

10.1021/es500530x ◽

2014 ◽

Vol 48 (23) ◽

pp. 13592-13600 ◽

Cited By ~ 14

Author(s):

I. Zohar ◽

R. Bookman ◽

N. Levin ◽

H. de Stigter ◽

N. Teutsch

Keyword(s):

Trace Metals ◽

Eastern Mediterranean ◽

Mediterranean Coast ◽

History Of ◽

Contamination History

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Interaction and boundary work: Western merchant colonies in the Levant and the Eastern Churches, 1650–1800

Journal of Modern European History ◽

10.1177/1611894420910899 ◽

2020 ◽

Vol 18 (2) ◽

pp. 156-176

Author(s):

Cornel Zwierlein

Keyword(s):

Nineteenth Century ◽

Early Modern ◽

National Culture ◽

Eastern Mediterranean ◽

Boundary Work ◽

Modern Times ◽

History Of ◽

Early Modern Times ◽

Close Distance

European merchants in their factories (‘nations’) in the Eastern Mediterranean under Ottoman rule were not really colonizers; in early modern times, they were somehow privileged guests. However, they deserve an important part in a long-term history of types of ‘close distance’ and forms of segregational coexistence. Different from recent studies that stress a strong overall interaction, understanding, sharing, and exchange between Europeans and Ottoman subjects, it is proposed to distinguish three levels: (1) The daily commercial interaction of Western Europeans with their Ottoman counterparts; (2) the stronger involvement in some politico-religious struggles (the 1724 schism in the patriarchate of Antioch serves as example): also here, one has still to distinguish between real interest in the religious cause and other activities as credit lending; (3) the care for and maintenance by the Europeans of their own Western national culture abroad: these cultural activities served more to (eventually unconsciously) perform ‘boundary work’ and to close up the ‘nation’. These early modern forms of close distance and segregation were only isomorphic but not homologous with later highly conscious colonial and modern imperial forms of contact between ‘West’ and ‘East’ as in the nineteenth-century European settlements in Istanbul.

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Hydraulic conductivity behavior of soilcrete specimens created from dredging sand, cement, and bentonite

10.21203/rs.3.rs-731008/v1 ◽

2021 ◽

Author(s):

Hoang-Hung Tran-Nguyen ◽

Bich Thi Luong ◽

Phong Duy Nguyen ◽

Khanh Duy Tuan Nguyen

Keyword(s):

Hydraulic Conductivity ◽

Mekong Delta ◽

Research Data ◽

Low Permeability ◽

High Permeability ◽

Seepage Flows ◽

Southern Vietnam ◽

Hydraulic Gradients ◽

Conductivity Behavior

Abstract Dredging sand is an inexpensive material utilized to rise elevations of highway embankments and earth levee bodies in the Southern Vietnam. However, high permeability of the dredging sand can cause failures due to seepage flows during annual flood seasons. The dredging sand mixing cement with or without bentonite is expected to be suitable low permeability as an impermeable material. However, hydraulic conductivity of soilcrete and bentonite specimens created from dredging sand taken in the Mekong delta has limit research data. This study aims at better understanding the hydraulic conductivity of dredging sand samples taken in Dong Thap province mixed with cement and bentonite. The effects of the hydraulic conductivity of soilcrete and bentonite soilcrete specimens on time, cement contents, bentonite contents, cement types, and hydraulic gradients were investigated. The tests followed the ASTM D5084 standard using the both falling head-constant tailwater and falling head-rising tailwater methods. The results indicate that: (1) the hydraulic conductivity of the soilcrete and bentonite specimens decreased with increasing in testing duration and cement contents; (2) the hydraulic conductivity of the soilcrete specimens was lower 104 to 105 times than that of the compacted sand; (3) the hydraulic conductivity of the bentonite soilcrete specimens was lower 10 times than those of the soilcrete specimens; (5) the PCS cement can induce long-term reduction of soilcrete hydraulic; (6) effect of hydraulic gradients on soilcrete hydraulic conductivity was ignorable; (6) the soilcrete hydraulic conductivity varies from 10− 9 to 10− 10 m/s.

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Leaky salt: pipe trails record the history of cross-evaporite fluid escape in the northern Levant Basin, Eastern Mediterranean

10.5194/egusphere-egu21-2545 ◽

2021 ◽

Author(s):

Davide Oppo ◽

Sian Evans ◽

Christopher A-L Jackson ◽

David Iacopini ◽

SM Mainul Kabir ◽

...

Keyword(s):

Fluid Flow ◽

Tectonic Evolution ◽

Eastern Mediterranean ◽

Early Pleistocene ◽

Salt Tectonics ◽

Messinian Salinity Crisis ◽

Seal Failure ◽

History Of ◽

Levant Basin

Hydrocarbon escape systems can be regionally active on multi-million-year timescales. However, reconstructing the timing and evolution of repeated escape events can be challenging because their expression may overlap in time and space. In the northern Levant Basin, eastern Mediterranean, distinct fluid escape episodes from common leakage points formed discrete, cross-evaporite fluid escape pipes, which are preserved in the stratigraphic record due to the coeval Messinian salt tectonics.The pipes consistently originate at the crest of prominent sub-salt anticlines, where thinning and hydrofracturing of overlying salt permitted focused fluid flow. Sequential pipes are arranged in several kilometers-long trails that were progressively deformed due to basinward gravity-gliding of salt and its overburden. The correlation of the oldest pipes within 12 trails suggests that margin-wide fluid escape started in the Late Pliocene/Early Pleistocene, coincident with a major phase of uplift of the Levant margin. We interpret that the consequent transfer of overpressure from the deeper basin areas triggered seal failure and cross-evaporite fluid flow. We infer that other triggers, mainly associated with the Messinian Salinity Crisis and compressive tectonics, played a secondary role in the northern Levant Basin. Further phases of fluid escape are unique to each anticline and, despite a common initial cause, long-term fluid escape proceeded independently according to structure-specific characteristics, such as the local dynamics of fluid migration and anticline geometry.Whereas cross-evaporite fluid escape in the southern Levant Basin is mainly attributed to the Messinian Salinity Crisis and compaction disequilibrium, we argue that these mechanisms do not apply to the northern Levant Basin; here, fluid escape was mainly driven by the tectonic evolution of the margin. Within this context, our study shows that the causes of cross-evaporite fluid escape can vary over time, act in synergy, and have different impacts in different areas of large salt basins.

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High Temperature Ageing of Fe-based Nanocrystalline Ribbons

Additional Conferences (Device Packaging HiTEC HiTEN & CICMT) ◽

10.4071/hitec-2012-wp22 ◽

2012 ◽

Vol 2012 (HITEC) ◽

pp. 000260-000265 ◽

Cited By ~ 4

Author(s):

Christian Martin ◽

Rémi Robutel ◽

Cyril Buttay ◽

Fabien Sixdenier ◽

Pascal Bevilacqua ◽

...

Keyword(s):

High Temperature ◽

High Temperature Stress ◽

Complex Permeability ◽

Magnetic Flux Density ◽

Low Permeability ◽

High Permeability ◽

Design Considerations ◽

Temperature Ageing ◽

The Impact

The impact of long-term high-temperature stress on nanocrystalline Finemet materials is measured by keeping samples at 200 °C for 1300 hours. The standard industrialized, high permeability Finemet materials as well as the recently available low permeability Finemet materials are investigated. Characterizations are performed at different frequencies, temperatures and magnetic field excitations on both aged and non-aged samples. Their complex permeability is also measured during the ageing test. Irreversible changes are pointed out on permeability, coercive field and magnetic flux density at saturation. Regarding the design considerations for high temperature power electronics, the suitability of these materials is demonstrated but an ageing effect has to be considered nonetheless. The presented data can be extrapolated to several thousand hours at 200 °C using the presented empiric ageing law.

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Greek History

Greece and Rome ◽

10.1017/s0017383517000109 ◽

2017 ◽

Vol 64 (2) ◽

pp. 193-198

Author(s):

Kostas Vlassopoulos

Keyword(s):

Eastern Mediterranean ◽

Late Antique ◽

Greek History ◽

History Of ◽

Late Roman

Three cities dominated the late antique eastern Mediterranean: Constantinople, Alexandria, and Antioch. Constantinople was the late Roman re-foundation of an archaic Greek apoikia, Byzantion; Alexandria and Antioch were cities created by Alexander and his Hellenistic successors. This review includes two important books that examine the long-term history of two of these cities: Byzantion and Antioch. Both books stress the need to situate these cities within the landscapes and territories from which they drew their economic, political, and spiritual sustenance; both also adopt a long-term perspective, covering roughly a millennium each, which makes it possible to trace wider continuities, trends, and changes.

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A long term (1949-2010) study of catch and effort in Israeli trawl fishery, Eastern Mediterranean Sea

Acta Adriatica ◽

10.32582/aa.58.1.13 ◽

2017 ◽

Vol 58 (1) ◽

pp. 157-164 ◽

Cited By ~ 1

Author(s):

Daniel Golani ◽

Dor Edelist ◽

Amit Lerner ◽

Oren Sonin ◽

Uzi Motro

Keyword(s):

Eastern Mediterranean ◽

Fishing Effort ◽

Maximum Sustainable Yield ◽

Mediterranean Coast ◽

Sustainable Yield ◽

Yield Model ◽

Eastern Mediterranean Sea ◽

Trawl Fishery ◽

Engine Power

The trawl fishery of the Mediterranean coast of Israel was analyzed vis á vis catch and fishing effort for the years 1949-2010. The Maximum Sustainable Yield (MSY) was calculated using the Fox surplus-yield model and was found to be 1,413 ton per annum using 1,415 units of effort (fishing days X engine power divided by 1000). Only during nine years (1997-2005) did fishing effort exceed the value for which the yield is the MSY by an average of 184.9 units of effort, but the yield was similar to that of the previous years. During 10 years the catch exceeded the MSY by an average of 153±119 tons. This result was used to justify the “freezing” of the local trawl fleet at the beginning of the 1990’s.

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Atypical Femoral Fracture in McCune-Albright Syndrome

Journal of Research in Orthopedic Science ◽

10.32598/jrosj.7.3.711.1 ◽

2020 ◽

Vol 7 (3) ◽

pp. 147-152

Author(s):

Salman Ghaffari ◽

◽

Mehran Razavipour ◽

Parastoo Mohammad Amini ◽

◽

...

Keyword(s):

Femoral Fracture ◽

Dynamic Compression ◽

Plate Fixation ◽

Medullary Canal ◽

Mccune Albright Syndrome ◽

Café Au Lait Spots ◽

History Of ◽

Albright Syndrome ◽

Mccune Albright

McCune-Albright Syndrome (MAS) is characterized by endocrinopathies, café-au-lait spots, and fibrous dysplasia. Bisphosphonates are the most prescribed treatment for reducing the pain but their long-term use has been associated with atypical fractures of cortical bones like femur in patients. We present a 23-year-old girl diagnosed with MAS. She had an atypical mid-shaft left femoral fracture that happened during simple walking. She also had a history of long-term use of alendronate. Because of the narrow medullary canal, we used 14 holes hybrid locking plate for the lateral aspect of the thigh to fix the fracture and 5 holes dynamic compression plate (instead of the intramedullary nail) in the anterior surface to double fix it, reducing the probability of device failure. With double plate fixation and discontinuation of alendronate, the complete union was achieved five months after surgery

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European Integration

10.3366/edinburgh/9781474455893.001.0001 ◽

2020 ◽

Author(s):

Johann P. Arnason

Keyword(s):

European Integration ◽

Eastern European ◽

The European Union ◽

Historical Processes ◽

History Of ◽

External Conditions ◽

Eastern European Countries ◽

Totalitarian Regimes ◽

The Eu

Different understandings of European integration, its background and present problems are represented in this book, but they share an emphasis on historical processes, geopolitical dynamics and regional diversity. The introduction surveys approaches to the question of European continuities and discontinuities, before going on to an overview of chapters. The following three contributions deal with long-term perspectives, including the question of Europe as a civilisational entity, the civilisational crisis of the twentieth century, marked by wars and totalitarian regimes, and a comparison of the European Union with the Habsburg Empire, with particular emphasis on similar crisis symptoms. The next three chapters discuss various aspects and contexts of the present crisis. Reflections on the Brexit controversy throw light on a longer history of intra-Union rivalry, enduring disputes and changing external conditions. An analysis of efforts to strengthen the EU’s legal and constitutional framework, and of resistances to them, highlights the unfinished agenda of integration. A closer look at the much-disputed Islamic presence in Europe suggests that an interdependent radicalization of Islamism and the European extreme right is a major factor in current political developments. Three concluding chapters adopt specific regional perspectives. Central and Eastern European countries, especially Poland, are following a path that leads to conflicts with dominant orientations of the EU, but this also raises questions about Europe’s future. The record of Scandinavian policies in relation to Europe exemplifies more general problems faced by peripheral regions. Finally, growing dissonances and divergences within the EU may strengthen the case for Eurasian perspectives.

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