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64th EAGE Conference & Exhibition
- Conference date: 27 May 2002 - 30 May 2002
- Location: Florence, Italy
- Published: 27 May 2002
681 - 688 of 688 results
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3D resistivity tomography and GPS survey: the case of the ancient town of Cuma
Authors F. Colosi, A. D‘Onofrio, G. Gabrielli, P. Mauriello and D. PatellaThe main purpose of this paper is to obtain an optimization of geoelectrical acquisition and
interpretation procedure. We use an home made resistivity survey system consisting of: 1) an
ac generator, 2) a receiving and acquiring unit connected through a radio-modem system, 3) a
GPS unit for fast positioning of survey points. The probability tomography approach is
extended to the case of a generally uneven prospection surface. Finally, we show the results of
the application of the 3D resistivity tomography to the ancient town of Cuma.
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A tomographic approach for GPR diagnostics in a stratified medium
Authors L. Crocco, R. Persico and F. SoldovieriIn this paper we apply a tomographic approach to the reconstruction of dielectric profiles
embedded in a layered medium. The approach is formulated in the framework of the
linearized approximation, and exploits the tool of the Singular Value Decomposition (SVD).
Numerical examples provided in a two-dimensional and scalar case, assess feasibility of the
approach and its robustness against noise on data in practical situations.
Key words: GPR, Microwave Tomography, Inverse Scattering.
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3D Resistivity Probability Tomography. The San Giovanni a Carbonara monastery (Naples) case-history
Authors B. Di Fiore, P. Mauriello and D. PatellaWe show the results of an experimental application of the high-resolution resistivity method
to the assessment of the state of conservation of architectonic structures and to the recognition
of buried features in the San Giovanni a Carbonara ancient monastery (Naples, Italy). The
tomography approach based on the concept of source occurrence probability has been used for
the analysis of the resistivity data. The 3D tomography imaging method is gaining increasing
importance for its objectivity and reliability. It has also the advantage of not requiring any a
priori assumption during the whole source imaging procedure.
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Geo-Resistivity & I.P. Surveys for Archaeology based on Proximity Effect in Sites Affected by both Nature and Anthropic Sources of Noise
More LessThis paper shows results obtained in Tuscany, given by recent Geo-Resistivity/I.P. survey
activities for Archaeology. In particular, comparisons are proposed, suggesting simultaneous
surveys of both Resistivity/Membrane Polarization, when possible, based on
experimental/theoretical achievements, previously accumulated, see e.g. Finzi-Contini
1968, 1969A/B, 1970, 1971, 1999A/B, 2000. This trend might be used for other situations.
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Geophysical exploration at Mileseva monastery
Authors S. Komatina and Z. TimotijevicMileseva monastery is situated near Prijepolje, approximately 300 km SW from Belgrade.
The monastery was founded in 13th century. Mileseva was destroyed and damaged several
times, but it has always been restored, protecting the original form. Within the monastery,
famous frescoes – White Angel and Mother of Jesus – Annunciation are present.
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Electromagnetic methods application for archaeological research
By V. KorepanovThe present work outlines the advantages and drawbacks of the electromagnetic systems,
which could be used for archaeological research. It is shown that active sounding systems
have definite advantage for this task. The example of transient electromagnetic (TEM)
method application is given and a new specimen of such system adapted for archaeological
prospecting is presented The conclusion is made that the system using long cable with
harmonic current has good perspective and will be developed in short time.
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Detection and classification of Buried Metallic Objects
Authors H. F. Morrison, A. Becker, T. Smith and E. GasperikovaMetal locators are widely used for locating metallic objects at archaeological sites. The
process is identical to that used for the task of identifying land-mines and un-exploded
ordnance (UXO). There has been a major effort to develop new metal locators, both to
improve detection and more importantly to identify the size, shape, and metal content of the
object and to discriminate against scrap metal and the effects of magnetic and electric
inhomogenieties in the ground. The advances being made in this area will naturally lead to
significant improvements for the application of electromagnetic methods in archaeology.
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Reservoir Characteristics and Sedimentary Evolution of a Major Pre-Caspian Field: The Example of Karachaganak
Authors A. Giovannelli, M. Viaggi, S. Elliott and T. O’HearnKarachaganak Field in northwestern Kazakhstan is a giant gas condensate reservoir underlain by
an oil rim with a compositional gradient from top to bottom. The Lower Permian to Upper
Devonian carbonate reservoir contains 1.236 billion tonnes of liquids and 1.371 trillion cubic
metres of gas in place (17.78 billion barrels of oil equivalent). The field was discovered by
Uralskneftegasgeologia in 1979, and first produced by KarachaganakGazprom in 1984. In
November 1997, an international consortium comprising ENI-Agip, BG Group, Texaco and
Lukoil signed a Production Sharing Agreement (PSA) with the Republic of Kazakhstan to
optimise the technical and economical recoveries.
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