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- Volume 12, Issue 6, 1994
First Break - Volume 12, Issue 6, 1994
Volume 12, Issue 6, 1994
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Displacement geometries along graben bounding faults
Authors O.R. Clausen and J.A. KorstgårdThe Hom Graben is a N-S striking graben structure cutting the E-W striking system of the North Sea High, It is located in the Danish and German North Sea between the Danish mainland and the Central Graben (Fig. 1). The Hom Graben as generally defined is of late Permian to Triassic age (Best et al. 1983; Olsen 1983; Vejbrek 1990; Clausen and Korstgard 1993). However, seismic sections indicate that the Triassic Hom Graben overprints earlier faults controlling the Late Permian subsidence in the area.
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A computerized album of Slingram scale-model curves for rapid interpretation on a PC by a matching technique
By J. FriborgThe Slingram (horizontal-loop electromagnetic) method is a versatile geophysical method that has applications in ore prospecting, engineering geophysics, and hydrogeological investigations. The target is often a conducting geological feature in a comparatively poorly conducting medium, such as a water-bearing fracture zone or a sulphide deposit. Interpretation tools that quickly give the model parameters for the conducting body are necessary for the successful application of the method.
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Validity of the porosity/effective-stress concept in sedimentary basin modelling
Authors F. Schneider, M. Bouteca and G. VasseurWhen modelling sedimentary basins, the aim is to simulate the geometric deformations caused by compaction during geological time by coupling them with fluid flows (water and hydrocarbons). Compaction of sediment is the result of various mechanisms that are not yet well understood. In actual basins it is analysed almost exclusively through field measurements of the porosity, the only 'strain' parameter which can be measured. The standard approach to simulating compaction in basin modelling is to couple a porosity/depth or a porosity/effective-stress relationship with a fluid flow law in porous media (Darcy's law).
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The challenge presented by North Sea Central Graben salt domes to all DMO algorithms
By K. HawkinsThe 1993 EAEG meeting 'Call for Papers' requested case histories demonstrating practical geophysics. It motivated me to provide this offering which, while being a case history of sorts showing a critical DMO applications, is also a history of the development of a modification to DMO to comprehend velocity variations that occur with depth. DMO algorithms able to comprehend velocity variations with depth, known as V(z) DMOs, have been in existence since the early 1980s, though their contribution to geophysical problem solving has never been striking. It has even been suggested by Lynn et al. (1991) that the errors introduced by constant velo city DMO are often offset by errors due to assuming an isotropic medium.
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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)