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- Volume 1, Issue 6, 1983
First Break - Volume 1, Issue 6, 1983
Volume 1, Issue 6, 1983
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The Lithosphere of the Ukraine
Authors V.B. Sollogub and A.V. ChekunovThe study of deep crustal and upper mantle zones is one of the major problems of both theoretical and practical character in modern geology. Principal methods of lithosphere analysis are geophysical, mainly seismic ones, as they provide the most reliable data on lithospheric structure and its physical properties. In the past twenty years the methods largely employed in the Ukraine have been those of deep seismic sounding (DSS) and comman depth point. This article is based on the results of that work. As a rule, seismic exploration has been carried out along the geotraverses crossing the Ukraine's main tectonic structures. Continuous in-line profiling was the dominant method for the field investigations, while detailed systems of correlated travel-time curves were obtained for all the main types of waves (refracted, reflected, converted waves, etc) from the intracrustal boundaries, its bottom and, if possible, the upper mantie (Sollogub et al. 1973). During the field investigations the geophone spacing was 1-2 km, while the distance between the shot-points was 15-20 km for upper crust studies and 30-50 km for deep horizon analysis. The length of the travel-time curves was, respectively, 70-100 km and 180-220 km; to study the upper mantie they were extended to 400-600 km (Sollogub et al. 1980a). Interpretation included the use of all wave types, which increased the amount of information obtained.
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Computer Science for Geophysicits. Part I: Elements of a Seismic Data Processing System
By L. HattonOf the many subjects of interest to the practising geophysicist, that of computer science is at the same time one of the most important and one of the least well understood. This article is the first in what will be a series talking about computer science and its relevance to exploration geophysics. The material in this article is extracted from a series of lectures on computer science which form a small part of the M.Sc. course in Petroleum Seismology at Oxford University.
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Profiling Continental Basement: the Key to Understanding Structures in the Sedimentary Cover
By J.A. BrewerCommercial seismic profiles are very rarely recorded to more than 5-6 secs, either because no reflections are seen in the deeper parts of those data or because reflections that are seen are thought to be of no commercial interest. However, the results of sever al thousands of kilometres deep (over 15 secs) reflection profiles recorded in the U.S.A., U.K. and elsewhere, whose recording parameters were specifically optimised to study deep crustal structures, clearly show that the upper part of the basement is very often seismically transparent, not opaque, and that understanding basement structures is very important for understanding structures in the sedimentary cover.
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Volumes & issues
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Volume 42 (2024)
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Volume 41 (2023)
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Volume 40 (2022)
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Volume 39 (2021)
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Volume 38 (2020)
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Volume 37 (2019)
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Volume 36 (2018)
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Volume 35 (2017)
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Volume 34 (2016)
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Volume 33 (2015)
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Volume 32 (2014)
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Volume 31 (2013)
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Volume 30 (2012)
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Volume 29 (2011)
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Volume 28 (2010)
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Volume 27 (2009)
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Volume 26 (2008)
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Volume 25 (2007)
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Volume 24 (2006)
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Volume 23 (2005)
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Volume 22 (2004)
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Volume 21 (2003)
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Volume 20 (2002)
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Volume 19 (2001)
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Volume 18 (2000)
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Volume 17 (1999)
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Volume 16 (1998)
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Volume 15 (1997)
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Volume 14 (1996)
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Volume 13 (1995)
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Volume 12 (1994)
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Volume 11 (1993)
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Volume 10 (1992)
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Volume 9 (1991)
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Volume 8 (1990)
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Volume 7 (1989)
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Volume 6 (1988)
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Volume 5 (1987)
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Volume 4 (1986)
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Volume 3 (1985)
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Volume 2 (1984)
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Volume 1 (1983)