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Multiplexed resistivity survey at the roman town of Wroxeter
Author(s) -
Walker A. R
Publication year - 2000
Publication title -
archaeological prospection
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.785
H-Index - 38
eISSN - 1099-0763
pISSN - 1075-2196
DOI - 10.1002/1099-0763(200006)7:2<119::aid-arp147>3.0.co;2-w
Subject(s) - gradiometer , fluxgate compass , dipole , multiplexing , range (aeronautics) , electrical resistivity and conductivity , remote sensing , geology , computer science , geodesy , telecommunications , electrical engineering , physics , engineering , magnetic field , magnetometer , aerospace engineering , quantum mechanics
A detailed resistivity survey was made at the Roman Town of Wroxeter to investigate the performance of a recently introduced mobile resistivity multiplexing system. Measurements were made with six twin‐array separations (0.25 m to 1.5 m), and with Wenner and double ‐dipole arrays. The resulting area plots are discussed and compared with existing fluxgate gradiometer data. The data sets were also: (i) used to create stacked pseudo‐sections in X and Y directions; and (ii) combined using various weightings to create composite images. The overall results show that making simultaneous measurements with a range of different configurations enables a broader understanding to be made of the measurement processes, than if just a single configuration had been used. In the site surveyed, the narrower spacings emphasize the near‐surface features, whereas the wide spacings reveal more substantial, underlying structures. Copyright © 2000 John Wiley & Sons, Ltd.