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High-resolution multi-sensor geophysical surveys for near-surface applications can be rapid and cost-effective

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journal contribution
posted on 08.12.2009, 16:14 by Ian A. Hill, Tim Grossey, Chris Leech
Too often geophysical surveys of the near surface are a last resort. Direct sampling by trenching or trial pits is relatively cheap and gives a geologist or engineer a direct view of the target. Boreholes are a natural extension from trial pits since, although they sample in depth at only one point, they may recover physical samples of the material from the units under investigation. Geophysics is frequently regarded as useful in terms of being noninvasive, but lacking in resolution, and incapable of coping with complex near-surface materials. This presents a strange contradiction, since geophysical surveys are accepted as a good tool for archaeological surveys, where the main purpose is to identify inhomogeneity in the near surface with high resolution. Archaeogeophysical surveys are highly detailed, but slow and expensive. Running surveys of the same area with multiple geophysical methods is even more expensive, though this offers the prospect of improved characterization of subsurface materials.

History

Citation

The Leading Edge, 2004, 23 (7), pp.684-688

Version

VoR (Version of Record)

Published in

The Leading Edge

Publisher

Society of Exploration Geophysicists

issn

1070-485X

eissn

1938-3789

Copyright date

2004

Available date

08/12/2009

Publisher version

http://library.seg.org/doi/abs/10.1190/1.1776741

Language

en

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