Geophysical methods in archaeology.
Optimization of technique for prospection of burial mounds
This issue is a publication of the author’s PhD thesis of the same title. This is the first ever study of the state and achievements of archaeological geophysics in Bulgaria against the background of its worldwide development. The potential of the various geophysical techniques for the purposes of archaeology is analysed and estimated therein. Special attention is paid to the two principal methods – geomagnetic and electroresistivity, and their advantages and disadvantages are illustrated with examples, as well as the benefits of their joint application. One the main results of the study is the proposed technique for prospection of perhaps the most attractive monuments in Bulgarian lands from antiquity – the Thracian burial mounds. It combines electroresistivity and geomagnetic mapping complemented by the two and three dimensional electroresistivity tomography (ERT). This technique is based both on model computer calculations and field surveys. Its potential is illustrated by the geophysical prospection of nineteen mounds, the prognoses being verified by archaeological excavations. In conclusion, Thracian burial mounds are classified by dimensions from geophysical point of view.