ANOMALOUS MAGNETIC FIELD OF THE ZHAMANSHIN METEORITE CRATER: NUMERICAL SIMULATION

Abstract

Craters formed by an asteroid impact on the Earth’s surface are characterized by the presence of an anomaly in the magnetic field. Numerical modeling of the anomalous magnetic field allows us to study the crater along with the methods used in geological exploration. Craters that are close in size have morphological similarities, which allows for a comparative analysis of magnetic anomalies of different craters. It is shown that they correspond to the general picture of the magnetic anomaly of the crater under study and lead to the conclusion that there is a layer of impactites in the crater bed and in the central hill buried under the sedimentary cover. Based on the modeling results, the average magnetic susceptibility of the target rocks is estimated at 3·10^-4 SI.