M. Járó - L. Költő szerk.: Archaeometrical research in Hungary (Budapest, 1988)

Prospecting - SŐRÉS László: Geophysical measurements at the site of a Roman homestead at Balácapuszta

Fig. 1 Maps of de and electromagnetic measurements; A: Cc resistivity map; B: electromagnetic conductivity map; a: excavated walls from the 1 st centrury A.D.;b: excavated walls from the 3rd century A.D.; c: bushes, cairns, etc; d: area showing deviation greater than 30 Qm (Resistivity given by 3 m dipole distance measurements is greater than that of 2 m.) The contour maps given by the two different measurements are similar. The maxima on map A coincide with the minima of map B. From the direct current profiles the exact place of the supposed walls was determined by computer filtering, and it is also illustrated on a map (Fig. 2). The wall anomalies, which can be correlated along several profiles, were linked, and these directions indicate the walls or canals built of stone or tile, which were preserved in a relatively good state beneath the surface. Where correlation is ambiguous, the anomalies are illustrated by dots, which suggest the place and shape of the subterranean objects. The geophysical maps draw attention not only to the previously unknown buildings, but they also show the effect of the buildings already known from the excavations performed at the beginning of the century; this provides a possibility of checking the reliability of the measuring results.