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Accurate modelling and inversion of electrical resistivity data in the presence of metallic infrastructure with known location and dimension

T.C. Johnson and D. Wellman.

in Geophysical Journal International

P ublished online June 2015 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 8689 words.

Electrical resistivity tomography (ERT) has been widely used in environmental applications to study processes associated with subsurface contaminants and contaminant remediation....

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Acoustic isolation of a monopole logging while drilling tool by combining natural stopbands of pipe extensional waves

Yuan-Da Su, Xiao-Ming Tang, Song Xu and Chun-Xi Zhuang.

in Geophysical Journal International

P ublished online May 2015 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 3564 words.

For extensional wave propagation along a cylindrical pipe, there exists a natural stopband in the frequency range between the first and second modes. This study explores the feasibility and...

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Adaptive time-lapse optimized survey design for electrical resistivity tomography monitoring

Paul B. Wilkinson, Sebastian Uhlemann, Philip I. Meldrum, Jonathan E. Chambers, Simon Carrière, Lucy S. Oxby and M.H. Loke.

in Geophysical Journal International

P ublished online September 2015 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 8830 words.

Adaptive optimal experimental design methods use previous data and results to guide the choice and design of future experiments. This paper describes the formulation of an adaptive survey...

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Advances in GPR data acquisition and analysis for archaeology

Wenke Zhao, Gang Tian, Emanuele Forte, Michele Pipan, Yimin Wang, Xuejing Li, Zhanjie Shi and Haiyan Liu.

in Geophysical Journal International

P ublished online April 2015 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 5009 words.

The primary objective of this study is to evaluate the applicability and the effectiveness of ground-penetrating radar (GPR) to identify a thin burnt soil layer, buried more than 2 m below...

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The advantages of logarithmically scaled data for electromagnetic inversion

Brent Wheelock, Steven Constable and Kerry Key.

in Geophysical Journal International

P ublished online April 2015 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 12826 words.

Non-linear inversion algorithms traverse a data misfit space over multiple iterations of trial models in search of either a global minimum or some target misfit contour. The success of the...

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Agassiz, Alexander

Edward Lurie.

in American National Biography Online

January 1999; p ublished online February 2000 .

Reference Entry. Subjects: Manufacturing; History of Manufacturing and Construction; Marine and Estuarine Biology; Oceanography and Hydrology. 1763 words.

Agassiz, Alexander (17 December 1835–27 March 1910), marine biologist, oceanographer, and industrial entrepreneur, was born in Neuchâtel, Switzerland, the son of Louis Agassiz, a zoologist,...

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Analysis of anomalous electrical conductivity and magnetic permeability effects using a frequency domain controlled-source electromagnetic method

Kyubo Noh, Seokmin Oh, Soon Jee Seol, Ki Ha Lee and Joongmoo Byun.

in Geophysical Journal International

P ublished online January 2016 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 8680 words.

We present a series of processes for understanding and analysing controlled-source electromagnetic (CSEM) responses for a conductive and permeable earth. To realize the CSEM response, a new...

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An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities

Leonardo B. Monachesi, J. Germán Rubino, Marina Rosas-Carbajal, Damien Jougnot, Niklas Linde, Beatriz Quintal and Klaus Holliger.

in Geophysical Journal International

P ublished online February 2015 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 10291 words.

The presence of mesoscopic heterogeneities in fluid-saturated porous rocks can produce measurable seismoelectric signals due to wave-induced fluid flow between regions of differing...

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Antarctic Climate History and Global Climate Changes

Pontus Lurcock and Fabio Florindo.

P ublished online September 2017 .

Article. Subjects: Meteorology and Climatology; Geology and the Lithosphere; Oceanography and Hydrology; Atmospheric Sciences. 11344 words.

Antarctic climate changes have been reconstructed from ice and sediment cores and numerical models (which also predict future changes). Major ice sheets first appeared 34 million years ago...

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Attenuation of elastic waves in bentonite and monitoring of radioactive waste repositories

A. Biryukov, N. Tisato and G. Grasselli.

in Geophysical Journal International

P ublished online February 2016 .

Journal Article. Subjects: Geophysics; Oceanography and Hydrology. 11745 words.

Deep geological repositories, isolated from the geosphere by an engineered bentonite barrier, are currently considered the safest solution for high-level radioactive waste (HLRW) disposal....

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