Instrumental and macroseismic parameters of the earthquake on April 10, 2024 with Mw=3.9 in Krasnodar region

Abstract

On April 10, 2024, an earthquake with Mw=3.9 occurred in the Krasnodar Territory, causing a macroseismic effect. The epicenter of the earthquake was located in a densely populated area and its consequences had a wide response among the population. As a result of a detailed study of the earthquake using instrumental data, the parameters of its source were determined, including the position of the hypocenter and spectral parameters, such as the seismic moment M0, the magnitude of the discharged stresses Δσ and the rupture radius R. A macroseismic survey was conducted through online Internet sources on the website of seismological agencies, VKontakte social network groups and the Telegram messenger group. Using the example of analyzing macroseismic information from an earthquake, the process of interpreting data collected by various Internet and mobile communication means is described, which allowed expanding knowledge about the nature of the macroseismic field. For the earthquake of 10.04.2024, the intensity values were determined in 42 populated areas of the Krasnodar Territory and the Republic of Adygea, a map of isoseismic fields of the macroseismic field was constructed. The intensity at the epicenter was estimated at 5 points and it was revealed that the position of the instrumental and macroseismic source of the earthquake is associated with the Kurdzhip zone of the ESZ