Fig. 3
From: Research on seismic activity and seismic structural characteristics of the Shandong region
Epicenter distribution of regional destructive earthquakes (70 BC to December 2023, M≥ 4.7). Red circles represent earthquakes that occurred before 1970, while gray circles denote those occurring after 1970. The size of red circles corresponds to the magnitude of the earthquakes. The maps were generated using maPInfo software (version 16; http://www.precisely.com) and modified using Power Point (version 2019; https://www.microsoft.com).
