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Abstract

G034 Abstract 1 2­D and 3­D synthetic data for evaluating strategies for sub­basalt exploration Both 2­D and 3­D synthetic geophysical datasets have been computed for evaluation of sub­basalt processing   inversion   and   interpretation   strategies.   The   data   include   raw   seismic   shot   gathers potential field and MT data. This presentation will introduce the datasets and show that not only can modelling produce challenging constrained data but also give insight into the sensitivity of the model to differing geophysical methods. Key results are an understanding of: how a seismic wave interacts with the basalt  the sensitivity of potential field and MT data  and processing/intergration strategies that can recover the primary information. Introduction R. Hobbs 1  A. Cherrett 2  M. Jegen 3  N. Harrop 4  F. Martini 5  and the SIMBA group 6 1  Department of Earth Sciences  University of Durham  South Road  Durham  DH1 3LE  United Kindom 2  Total E&P UK PLC 3  Eidgenössische Technische Hochschule Zürich 4  ARKeX Ltd  5  University College Dublin 6  Total E&P UK PLC  Institute Français du Pétrole  University of Durham  University of Ireland  ARK Geophysics Ltd  Université de Bretagne Occidentale University of Cambridge  Norsk Hydro ASA Sub­basalt exploration is hampered by a lack of confidence in the interpretation of the geophysical data. In areas with  substantial  basalt  cover  conventional seismic imaging fails to reveal enough information   about   the   sub­basalt   structures.   The   images   show   disjoint   reflectivity   with

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/content/papers/10.3997/2214-4609-pdb.1.G034
2005-06-13
2024-04-19
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