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1.
ＡｑｕａｎｔｉｔａｔｉｖｅａｎａｌｙｓｉｓｏｎｔｈｅＥｇｙｐｔｉａｎＭｅｄｉｔｅｒｒａｎｅａｎｗａｔｅｒｓ￥Ｍ．Ａ．ＳａｉｄａｎｄＦ．Ｍ．Ｅｉｄ（ＲｅｃｅｉｖｅｄＳｅｐｔｅｍｂｅｒ２１，１９９３１ａｃｃｆｅｐｔｅｄＪａｎｕａｒｙ１５，１９９４）Ａｂｓ... 相似文献
2.
Many tens of severe earthquake damage patterns were revealed at the ancient city of Ayla. The seismic deformation patterns
are of various types, including systematic tilting of walls, systematic shifting and rotation of wall fragments and individual
stones, arch deformations and joints crossing two or more stones. Features of later repair, supporting walls and secondary
use of building stones suggest that the damage patterns can be explained by two historical devastating earthquakes: (I) revealed
in the constructions built during the late Rashidun period (644–656 A.D.); (II) revealed in the structures restored and/or
built during the Fatimid period (1050–1116 A.D.). The maximum observed intensity of both earthquakes at the studied site was
not less than IX (EMS98 scale). The sources of the seismic events were probably the Dead Sea Transform and Wadi Araba Faults
that cross the site obliquely. The last 1995 Nuweiba earthquake with maximum observed intensity VIII has also left its clear
traces in the excavated ancient Ayla buildings. The severity of the destruction was significantly increased because of site
effects. 相似文献
3.
Abstract Remote measurements of wave spectra were made using MacLaren Plansearch's Marine Radar Wave Measuring System (Macrada©) for the duration of the ERS‐1 Grand Banks Experiment (10–27 November 1991). The system consists of a Furuno X‐band marine navigation radar and a personal computer. The system was installed and operated onboard the BIO Research vessel CSS Hudson during the experiment. The radar system provides fully directional wave spectra in real time (within minutes of image acquisition) as well as archiving of the raw images for future analysis. During each of the satellite overpasses, excellent data were collected, covering a variety of wave conditions. This paper describes the data analysis procedures and presents the results of the experiment. In addition, a sensitivity analysis is carried out to study: (1) sensitivity to the number of radar images processed on the resultant spectra, (2) effect of missing one or more images in a dataset, and (3) sensitivity to azimuth angle variation. Finally, the results are compared with corresponding directional wave spectra from other sensors (such as WAVEC Buoy and ERS‐1 SAR). 相似文献
4.
Lebedev I. E. Bobrovnikova E. M. Tikhomirov P. L. Eid B. Lhuillier F. Pavlov V. E. 《Izvestiya Physics of the Solid Earth》2022,58(2):185-202
Izvestiya, Physics of the Solid Earth - Abstract—A paleomagnetic study of the Okhotsk–Chukotka belt volcanics exposed in the region of the Kupol field (~66.9° N, 170.1° E) has... 相似文献
5.
Hisham T. Eid 《Geotechnical and Geological Engineering》2006,24(6):1695-1713
The influence of sample preparation procedure on the measured classification indices such as clay-size fraction, liquid limit,
and plastic limit of shales was investigated. Shale samples covering a wide range of composition and plasticity were tested
using standard and modified preparation procedures to yield quantitative data required for this investigation. The study specifies
the range of shale plasticity in which the measured values of clay-size fraction and liquid limit are sensitive to hydrometer
specimen size and rehydration time, respectively. The study also revealed that the degree of shale particle disaggregation
has an important influence on the measured clay-size fraction and liquid limit. This influence is maximized for shales with
intermediate plasticity and can be interpreted in terms of particle size and shape. Correlations were established between
classification indices derived from standard and modified sample preparation procedures. It is recommended to use these correlations
to adjust shale classification indices derived from standard sample preparation procedures usually utilized by commercial
laboratories. Such correlations help in creating a universally followed procedure for better estimation of shale engineering
properties and reliable interpretation of case histories involving shale formations. 相似文献
6.
Eid Al-Tarazi 《Natural Hazards》1994,10(1-2):79-96
The earthquake hazard in Jordan and its vicinity is assessed on the basis of probabilistic methods. For this purpose, an updated earthquake catalog is compiled which covers the period between AD 1–1989. The earthquakes lie between latitudes 27.0°-35.5° N and longitudes 32.0°-39.0° E. Thirteen seismic zones are defined on a regional seismic and tectonic map presented for the area. Point-source and line-source models are used. The seismic hazard parameters, namely, theb-parameter (of the Gutenberg-Richter relation),m
1 (the upper bound magnitude), and 4 (the annual rate of occurrence of earthquakes with local magnitudeM
L
4.0) are calculated for each zone. The results of the seismic hazard assessment are displayed as iso-acceleration contours expected to be exceeded during typical economic life times of structures, i.e. 50 and 100 years. For each model, two seismic hazard maps are derived. In order to determine the importance of the South-eastern Mediterranean zone and the north part of the Red Sea zone from a seismic hazard point of view for Jordan, one seismic hazard map which corresponds to 50 years' economic life for every model, excluding the seismicity of these zones, is derived. 相似文献
7.
We generalize the equations of motion of a shell for a sequence of thin shells and derive the general form of the expansion
law of the dust shell model which represents the FRW universe when we take an appropriate limit. The three Friedmann model
for the three possible values of k:0,±1 are satisfied. 相似文献
8.
The very low frequency-electromagnetic (VLF-EM) technique was used to delineate two sub-parallel lava tubes, faults and dikes
in Umm El-Quttein area, NE Jordan. The investigation of the lava tubes was conducted through 22 VLF-EM profiles across lava
strike; the length of profiles ranged from 700 to 1700 m. The lava tubes outcrop at two sites: Azzam cave and Al-Howa tunnel,
characterized by slightly weathered basalt, columnar joints and fissure zones; qualitative interpretation of Fraser and Karous-Hjelt
maps differentiate those zones as linear, elongated and circular anomalous zones. The 2-D tipper inversion of VLF-EM data
and resistivity imaging had the potential to screen out three anomalous zones of likely resistivity contrast: the lava tube
body with resistivity over 2500 Θ·m, the fractured zones with resistivity less than 500 Θ·m, and the host vesicular basalt
with resistivity of 1500 Θ·m. The strike of lava tubes varied from SW to NE direction with depth less than 20 m and width
from 10 to 30 m. 相似文献
9.
The paper discusses the possibilty of interpreting the magnetic fields of astronomical bodies in the framework of a unified field theory.Using one of the solutions of the generalized field theory, a direct relation between the polar magnetic field, the angular velocity and the gravitational potential of the body considered, is obtained. The geometric model used for applications has spherical symmetry and is of the type (FIGI).The predictions of the theoretical formula, obtained from the model, are compared with available observational data, and with the empirical formula of Blackett. The theoretical formula gives a possible interpretation of a seed magnetic field which will develop and produce the large-scale magnetic field observed for celestial objects. The formula shows that the field is generated as a result of rotation of a massive object. 相似文献
10.
Lebedev I. E. Tikhomirov P. L. Pasenko A. M. Eid B. Lhuillier F. Pavlov V. E. 《Izvestiya Physics of the Solid Earth》2021,57(2):232-246
Izvestiya, Physics of the Solid Earth - Abstract—Paleomagnetic studies of several Late Cretaceous volcanic sections of the Okhotsk–Chukotka volcanic belt have been carried out in the... 相似文献