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Now showing items 4273-4292 of 39280
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(2001)The main peculiarity of the tectonic and magmatic development of the Moon is its resemblance to the Paleoproterozoic stage of the Earth development. The Moon shows no analogues of both the ancient (Archean) terrestrial ...
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(2000)We report detailed high precision combined single grain U-Pb and Lu-Hf studies of early zircons to obtain more reliable indications of the extent of mantle depletion and crustal recycling in the Archean. Despite the ...
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(2002)Very different palaeogeographical reconstructions have been produced by a combination of palaeomagnetic and faunal data, which are re-evaluated on a global basis for the period from 500 to 400 Ma, and are presented with ...
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(2004)Palaeomagnetic and faunal data have been re-evaluated on a global basis for the period from 400 Ma (early mid-Devonian) to 250 Ma (latest Permian). The boundaries of the major terranes are considered and defined. Six new ...
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(1999)Earth system science has influenced and continues to influence our understanding of the relationship between humans and nature. The first important lessons were that our planet is not the center of the universe and we are ...
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(1989)Vertical displacements of the solid surface of the earth resulting from lunar-solar high and low tides are asymmetrical relative to the zero position, in that the amplitudes of the high tides are greater than those of the ...
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(2001)The Earth's main magnetic field, arising in the core, should, in the ocean, have a well-defined uniform gradient with depth. Superimposed upon this uniform gradient may be magnetic signals due to a variety of sources. These ...
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(1998)The lowest magnitude of complete reporting and its variations in space and time are estimated for several regional earthquake catalogs. The discussion focuses on questions of methodology and the space-time inhomogeneity ...
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(2003)Earthquakes are an important source of knowledge on mode of deformation and strength of rocks. According to the available hypocenter locations and recent relocations, most of seismicity in the Baikal rift is confined to ...
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(1990)The system of stresses in the lithosphere (0–59 km) and upper asthenosphere (60–150 km) was analysed on the basis of focal-mechanism data for events of M > 5.0 in 1964–1982. The zoning was made considering types of faulting ...
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(2003)Engineering seismology is the link between earth sciences and engineering. The main input of engineering seismology in engineering design are loading conditions which must satisfy certain conditions regarding their level ...
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(1997)Earthquake prediction is an area of research of great scientific and public fascination. The reason for this is not only that earthquakes can cause extremely large numbers of fatalities in a short time, but also because ...
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(2004)The recent scientific advances in understanding the hierarchical nature of the lithosphere and its dynamics based on systematic monitoring and evidence of its space-energy similarity at global, regional, and local scales ...
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(1988)A new seismometer design based on the interaction of the sensor component of the instrument with the earth's magnetic field significantly broadens the range of frequencies recordable by a single instrument. This design ...
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(2004)A mid-ocean ridge transform fault (RTF) of length L, slip rate V, and moment release rate M can be characterized by a seismic coupling coefficient χ = AE/AT, where AE ∼ M/V is an effective seismic area and AT ∝ L3/2V-1/2 ...
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(2004)Relying on basic physics, laboratory and field evidence, and accounting for the different timescales involved, we derive an approximate energy function for earthquakes. The fracture term is disregarded because virtually ...
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(1993)Glaciations have occurred episodically at different time intervals and for different durations in Earth's history. Ice covers have formed in a wide range of plate tectonic and structural settings but the bulk of Earth's ...
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(F. Giannini, 1973)This paper presents new data on the upper mantle characteristics, and on seismicity and volcanism in Kamchatka. It is shown that the seismic activity in the Pacific focal layer decreases sharply below that narrow line on ...
Now showing items 4273-4292 of 39280