Скачать или смотреть Results of ground and aeromagnetic surveys for searching for ancient metallurgical objects

in the Baikal region in Russia

by D. L.A. Onamoun, S.V. Snopkov, K.M. Konstantinov, I.O. Konshin, I.V. Lobuov
Irkutsk Research Technical University, Russia

The Baikal region in Eastern Siberia is an archaeologically rich region, including monuments of ancient metallurgy. Geophysical methods are used to search for and study monuments of ancient metallurgy in Baikal region. Due to high values of magnetization of iron reduction pits, the main search method is magnetic prospecting in modification of pedestrian and aerial surveys. In the first stage, the survey is conducted using UAV (unmanned aerial vehicle), which allows for very high-quality surveying over a large area in difficult terrain conditions, taking much less time. Analysis of UAV maps of the total vector and magnetic field gradient revealed positive local anomalies up to 5 m in diameter with amplitudes ranging from 7 nT to 10 nT.

High-precision ground survey was carried out over an area of 300 m2 on a 1×1 m grid, using the MMPOS - 1 instrument. Magnetometer sensors were installed at a height of 0.5 and 1 m. According to the data of ground magnetic survey, the map of magnetic field anomalies reveals local contrast anomalies with amplitude up to 30 nT, which are interpreted as the effects of near-surface anthropogenic objects. Archaeological excavations of the objects identified by magnetic survey confirmed its effectiveness in the Olkhon region.