C. Panissod et al., RECENT DEVELOPMENTS IN SHALLOW-DEPTH ELECTRICAL AND ELECTROSTATIC PROSPECTING USING MOBILE ARRAYS, Geophysics, 63(5), 1998, pp. 1542-1550
Application of mobile electrical and electrostatic quadripoles during
the past ten years has allowed a considerable increase in the size of
the surveyed areas, together with keeping a high spatial resolution an
d a reduction of the total cost of a survey. Two new developments of t
owed arrays are illustrated here: (1) a Dole-pole array pulled by the
operator provides a lightweight solution for mapping large surfaces at
a unique given depth of investigation, as shown by the prospection of
the Roman-British city of Wroxeter; and (2) a multipole, multidepth s
ystem allows a 3-D investigation of the ground resistivity, as illustr
ated by the experiments undertaken on the test site of Garchy and on t
he archaeological site of Montbaron (Indre, France).