- Haifa, Haifa, Israel
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Research indicates that the aeolianite (Kurkar) cliffs along the Israeli Mediterranean coastline have continuously retreated eastward during the last few decades. There seems to be no dispute among Earth scientists regarding the general... more
Research indicates that the aeolianite (Kurkar) cliffs along the Israeli Mediterranean coastline have continuously retreated eastward during the last few decades. There seems to be no dispute among Earth scientists regarding the general trend of cliff retreat. However the majority of papers displaying cliff retreat rates are based upon comparison of aerial photographs. Their lack of advanced geometric measurement methods causes a high margin of error. Public attention is focused upon the Beit-Yannay coastal cliff since private homes are located along the southern section of the cliff crest. The current research compares the historic location of the cliff crest edge at Beit-Yannay as observed in a series of aerial photographs taken during the period 1918-2000. Quantitative measurement methods included applications of satellite geodesy and digital photogrammetry and mapping. Research results offer quantitative, consecutive and highly accurate data regarding retreat rates over a relati...
Lake level fluctuations, loose silt bottom, lack of natural anchorages, and on-shore prevailing winds, endangered navigation on the Dead Sea and prevented the long-term planning, construction and maintenance of shore-based harbour... more
Lake level fluctuations, loose silt bottom, lack of natural anchorages, and on-shore prevailing winds, endangered navigation on the Dead Sea and prevented the long-term planning, construction and maintenance of shore-based harbour installations. A recently discovered artificial stone mound off the northern shore of the Dead Sea is a maritime-related archaeological find exposed by the drying out of the lake. The construction of this site and another site nearby inside the lake away from its historic shore was intended to create an open-water mooring designed to overcome some of the for cited challenges. In turn they allowed the use of this economically and strategically important part of the lake by maritime traffic.
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... yr BP (Fairbanks, 1989; Bard et al., 1990, 1996; Antonioli and Oliverio, 1996; Lambeck and Bard, 2000; Lambeck et al., 2002, 2004) and the coastline shifted eastward to about 14 km west to the present-day coastline in Haifa Bay. ...
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... The LJR flood plain is not inhabited and the population lives outside the area, yet theflood plain is used for agricultural purposes. ... Hence, floods occurring in the upper Jordan River have no direct impact on the LJR (Marwan &... more
... The LJR flood plain is not inhabited and the population lives outside the area, yet theflood plain is used for agricultural purposes. ... Hence, floods occurring in the upper Jordan River have no direct impact on the LJR (Marwan & Klein, 2002). ...
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A recently discovered artificial stone mound on the northern shore of the Dead Sea is a maritime feature exposed by the drying of the lake. Lake-level fluctuations, a loose silt bottom, lack of natural anchorages, and onshore prevailing... more
A recently discovered artificial stone mound on the northern shore of the Dead Sea is a maritime feature exposed by the drying of the lake. Lake-level fluctuations, a loose silt bottom, lack of natural anchorages, and onshore prevailing winds, prevented the long-term planning, construction and maintenance of shore-based harbour installations in this area. This and a similar mound nearby, Rujum el Bahr, are interpreted as structures once used for open-water mooring, providing a firm anchor-hold over a range of lake levels and wind directions. As such, they enabled the use of this economically and strategically important part of the lake by maritime traffic.
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Lake level fluctuations, loose silt bottom, lack of natural anchorages, and on-shore prevailing winds, endangered navigation on the Dead Sea and prevented the long-term planning, construction and maintenance of shore-based harbour... more
Lake level fluctuations, loose silt bottom, lack of natural anchorages, and on-shore
prevailing winds, endangered navigation on the Dead Sea and prevented the long-term planning,
construction and maintenance of shore-based harbour installations. A recently discovered
artificial stone mound off the northern shore of the Dead Sea is a maritime-related archaeological
find exposed by the drying out of the lake. The construction of this site and
another site nearby inside the lake away from its historic shore was intended to create an
open-water mooring designed to overcome some of the for cited challenges. In turn they allowed
the use of this economically and strategically important part of the lake by maritime
traffic.
prevailing winds, endangered navigation on the Dead Sea and prevented the long-term planning,
construction and maintenance of shore-based harbour installations. A recently discovered
artificial stone mound off the northern shore of the Dead Sea is a maritime-related archaeological
find exposed by the drying out of the lake. The construction of this site and
another site nearby inside the lake away from its historic shore was intended to create an
open-water mooring designed to overcome some of the for cited challenges. In turn they allowed
the use of this economically and strategically important part of the lake by maritime
traffic.
Research Interests:
A recently discovered artificial stone mound on the northern shore of the Dead Sea is a maritime feature exposed by the drying of the lake. Lake-level fluctuations, a loose silt bottom, lack of natural anchorages, and onshore prevailing... more
A recently discovered artificial stone mound on the northern shore of the Dead Sea is a maritime feature exposed by the drying of the lake. Lake-level fluctuations, a loose silt bottom, lack of natural anchorages, and onshore prevailing winds, prevented the long-term planning, construction and maintenance of shore-based harbour installations in this area. This and a similar mound nearby, Rujum el Bahr, are interpreted as structures once used for open-water mooring, providing a firm anchor-hold over a range of lake levels and wind directions. As such, they enabled the use of this economically and strategically important part of the lake by maritime traffic.
Research Interests:
Archaeological waterlogged wood objects exposed on the Dead Sea shore exhibit little visual evidence of degradation when first exposed, and after prolonged exposure and dehydration. An investigation on the state of preservation of this... more
Archaeological waterlogged wood objects exposed on the Dead Sea shore exhibit little visual evidence of degradation when first exposed, and after prolonged exposure and dehydration. An investigation on the state of preservation of this material was recognised as a necessary step towards its long-term conservation. Micromorphological observations, ATR FTIR, ash content, and physical tests showed that deterioration is limited and is mostly non-biological in nature. Natural bulking and impregnation with lake minerals and salts appear to play a significant role in the physical stability of these woods when dried, and apparently inhibit microbial colo-nization and subsequent degradation. In contrast, archaeological wood examined from a typical Mediterranean marine environment showed advanced stages of degradation by bacteria, with the wood structure extensively compromised.
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Sharing water in the Jordan basin has been a key topic in the recent peace talks between Israel and its neighbors. Knowing the quantity of water available is a prerequisite to water sharing. Many different values have been published in... more
Sharing water in the Jordan basin has been a key topic in the recent peace talks between Israel and its neighbors. Knowing the quantity of water available is a prerequisite to water sharing. Many different values have been published in recent years. Different sources report Jordan's discharge flow into Lake Kinneret anywhere from 460 to 800 Mm/year. The aim of
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ABSTRACT
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ABSTRACT River mouths on the Israeli Mediterranean coast exhibit a highly dynamic morphology. They deflect hundreds of meters along the shoreline and experience periodic opening and closure. They are characterized by low discharges, which... more
ABSTRACT River mouths on the Israeli Mediterranean coast exhibit a highly dynamic morphology. They deflect hundreds of meters along the shoreline and experience periodic opening and closure. They are characterized by low discharges, which occur mostly during winter floods, and high concentrations of wastewater flow. This study examines the effect of floods on the dynamic morphology of seven of these river mouths between 1918 and 2005. The methodology is based on GIS techniques and utilizes over 300 aerial photographs from which detailed geomorphologic mapping of river mouths and nearby geomorphologic elements was performed. River discharge records were incorporated into a database, permitting analysis of the effect of floods on the morphology of the river mouths. River floods were found to have a short-term morphological effect on the mouths, mostly through channel cut-off and diversion. Flood morphology, identifiable in aerial photographs, included wide channels and large inundated areas adjacent to the channels. On rare occasions, floods caused the breaching of second channels flowing to the sea simultaneously. Based on their adjacent topography, two types of mouths were recognized, each responding differently to river floods. In funnel topography mouths, flood morphology almost always displayed straight channels. In barrier-deflected mouths the response to floods is more complex. In some flood observations, the channel was diverted away from its barrier deflected “semi-permanent normal position along dune toe, but was deflected either north or south. In other observations, even large magnitude floods were unable to divert these semi-permanent channels. Well-established semi-permanent channels and low sinuosity values are intrinsic morphological conditions that can prevent straight flow to the sea even in the event of large floods.
Sharing water in the Jordan basin has been a key topic in the recent peace talks between Israel and its neighbors. Knowing the quantity of water available is a prerequisite to water sharing. Many different values have been published in... more
Sharing water in the Jordan basin has been a key topic in the recent peace talks between Israel and its neighbors. Knowing the quantity of water available is a prerequisite to water sharing. Many different values have been published in recent years. Different sources report Jordan's discharge flow into Lake Kinneret anywhere from 460 to 800 Mm/year. The aim of