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A receiver function study across the Dead Sea Transform 总被引:4,自引:0,他引:4
A. Mohsen R. Hofstetter G. Bock R. Kind M. Weber K. Wylegalla G. Rümpker the DESERT Group 《Geophysical Journal International》2005,160(3):948-960
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Thickness of the lithosphere east of the Dead Sea Transform 总被引:1,自引:0,他引:1
Ayman Mohsen Rainer Kind Stephan V. Sobolev Michael Weber the DESERT Group 《Geophysical Journal International》2006,167(2):845-852
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The crustal structure of the Dead Sea Transform 总被引:3,自引:0,他引:3
《Geophysical Journal International》2004,156(3):655-681
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Microearthquake activity in the Dead Sea region 总被引:2,自引:0,他引:2
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Y. Klinger J. P. Avouac L. Dorbath N. Abou Karaki N. Tisnerat 《Geophysical Journal International》2000,142(3):769-782
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Michal Shatkay David A. Anati Joel R. Gat 《International Journal of Salt Lake Research》1993,2(2):93-110
Measurements of dissolved oxygen, density and temperature were con ducted in the Dead Sea between August 1987 and December
1989. Oxygen concentrations were found to vary around an average value of 0.8 mlSTP (standard temperature and pressure) per
kg. Dissolved oxygen variations were found to reflect both physical processes (a deepening of the epilimnion, a turnover etc.)
and chemical processes (oxidation reduction). Transport coefficients for the oxygen exchange across the air/sea interface
were found to be generally low compared to expected values based on laboratory experiments; the presence of surface films
which inhibit the gas exchange rates under calm weather conditions is suspected. During stormy weather, the exchange rates
were considerably higher, suggesting that the entrainment of bubbles was involved in the gas exchange process.
Contribution No. 95, Department of Environmental Sciences and Energy Research. The Weizmann Institute of Science 相似文献
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On the lack of seismic discontinuities within the inner core 总被引:1,自引:0,他引:1
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N. N. Ambraseys 《Geophysical Journal International》2006,165(2):516-526
In this article, through the comparison of knowledge relating to historical earthquakes with the understanding of present-day earthquake mechanics and overall GPS slip rates in the eastern Mediterranean region, it has been possible to obtain an idea of how frequently large earthquakes may be expected in some parts of the region. It has also been possible to make an assessment from these early events of slip rates over a long period of time for the Gulf of Corinth in Greece, the Marmara Sea in Turkey and the Dead Sea Fault System, as well as deriving long-term magnitude–frequency relations for these same regions.
It has been demonstrated that slip rates calculated from historical data are in general comparable to those calculated from GPS measurements and field observations, while the size of historical earthquakes and their uncertainty can be quantified. This permits a more reliable estimation of the long-term hazard, the calculation of which is the concern of the engineering seismologist. It has also been shown that in most cases large earthquakes are less frequent when they are estimated from long-term data sets rather than from the instrumental period making the notion of recurrence time and of hazard assessment, questionable.
This study focuses on some of the few areas in the world for which long-term macroseism information exists and which facilitate this kind of analysis. 相似文献
It has been demonstrated that slip rates calculated from historical data are in general comparable to those calculated from GPS measurements and field observations, while the size of historical earthquakes and their uncertainty can be quantified. This permits a more reliable estimation of the long-term hazard, the calculation of which is the concern of the engineering seismologist. It has also been shown that in most cases large earthquakes are less frequent when they are estimated from long-term data sets rather than from the instrumental period making the notion of recurrence time and of hazard assessment, questionable.
This study focuses on some of the few areas in the world for which long-term macroseism information exists and which facilitate this kind of analysis. 相似文献
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Bacterial activities in the Dead Sea, 1980-1991: survival at the upper limit of salinity 总被引:2,自引:0,他引:2
Aharon Oren 《International Journal of Salt Lake Research》1992,1(1):7-20
Since the mass development of halophilic bacteria in 1980 and the subsequent decline of the community in 1982, no new mass
development of bacteria has occurred in the Dead Sea, and bacterial numbers have remained extremely low. The lake’s salinity,
and more specifically the divalent cation concentration, have increased greatly during the last ten years. To quantitate the
activity of the community of heterotrophic bacteria in the Dead Sea water column, rates of incorporation of amino acids, glycerol,
and acetate were measured, both during the 1980–1981 bloom and in recent years. With the development of the bloom, rates of
incorporation amino acids, glycerol and acetate increased. Concomitant with the decline in bacterial numbers, the incorporation
rates of amino acids and acetate decreased at the end of 1980-beginning of 1981, while glycerol incorporation rates remained
high for one more year. Measurements in 1989 and in 1991 showed very low but significant incorporation rates (three to four
orders of magnitude lower than during the 1980–1981 bloom). By the use of specific inhibitors, it was shown that the remaining
activity was due to halophilic archaeobacteria. The mechanism of the long-term survival of a small active bacterial community
in the Dead Sea in the absence of primary producers and other obvious sources of organic carbon, and at divalent cation concentrations
greatly exceeding those enabling growth, is still unknown. 相似文献
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Y. Klinger J. P. Avouac N. Abou Karaki L. Dorbath D. Bourles J. L. Reyss 《Geophysical Journal International》2000,142(3):755-768
The Araba valley lies between the southern tip of the Dead Sea and the Gulf of Aqaba. This depression, blanketed with alluvial and lacustrine deposits, is cut along its entire length by the Dead Sea fault. In many places the fault is well defined by scarps, and evidence for left-lateral strike-slip faulting is abundant. The slip rate on the fault can be constrained from dated geomorphic features displaced by the fault. A large fan at the mouth of Wadi Dahal has been displaced by about 500 m since the bulk of the fanglomerates were deposited 77–140 kyr ago, as dated from cosmogenic isotope analysis (10 Be in chert) of pebbles collected on the fan surface and from the age of transgressive lacustrine sediments capping the fan. Holocene alluvial surfaces are also clearly offset. By correlation with similar surfaces along the Dead Sea lake margin, we propose a chronology for their emplacement. Taken together, our observations suggest an average slip rate over the Late Pleistocene of between 2 and 6 mm yr−1 , with a preferred value of 4 mm yr−1 . This slip rate is shown to be consistent with other constraints on the kinematics of the Arabian plate, assuming a rotation rate of about 0.396° Myr−1 around a pole at 31.1°N, 26.7°E relative to Africa. 相似文献
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The Kirchhoff-Helmholtz (KH) integration has been used to model the reflected and the diving waves from an interface with a positive velocity gradient. The modelling is carried out for a spherical boundary and for a sinusoidal topography with a long-scale wavelength.
An artefact, which is a major problem in modelling the seismic response using the KH integration, has been reduced by introducing a Hilbert transform sign manipulation. Cleaner synthetic seismograms with correct amplitudes have been produced by this method. A discretization in larger surface elements has been made possible by introducing a smoothing factor that suppresses the noise that normally follows the constructed signal if a large element size is taken. 相似文献
An artefact, which is a major problem in modelling the seismic response using the KH integration, has been reduced by introducing a Hilbert transform sign manipulation. Cleaner synthetic seismograms with correct amplitudes have been produced by this method. A discretization in larger surface elements has been made possible by introducing a smoothing factor that suppresses the noise that normally follows the constructed signal if a large element size is taken. 相似文献
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对以色列和约旦死海中溴镁资源的开发综合利用进行了解述。包括死海卤水组成,资源储量,溴及其衍生物的镁化学制品生产现状。 相似文献
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Holocene faulting and earthquake recurrence along the Serghaya branch of the Dead Sea fault system in Syria and Lebanon 总被引:3,自引:0,他引:3
Francisco Gomez Mustapha Meghraoui Abdul Nasser Darkal Fouad Hijazi Michel Mouty Youssef Suleiman Reda Sbeinati Ryad Darawcheh Riad Al-Ghazzi Muawia Barazangi 《Geophysical Journal International》2003,153(3):658-674
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