Abstract
This study investigates the relationship between rockfall and seismic activity. The article examines the development of the Butrointsi rockfall before the earthquake with a magnitude of Mw 5.6 on the Richter scale and the development which occurred as a result of the seismic activity. Comparing the rock blocks' size, their volume and the deposit's dynamics before and after the earthquake, the authors emphasize the role of the seismic factor for the activation of the rock fall procss. Through the application of various methods (morphographics, morphometrics, sedimentologicals etc.) the authors make a complete profile of the deposits and calculate the amount of collapsed rocks caused by the earthquake. The aim of this study is to emphasize the role of the seismic factor for the dynamics of the Butrointsi rockfall. The authors analyze a combination of terrain data and laboratory results in order to gain insights into the initiation, dynamics and talus deposition of a complex rockfall.
Highlights
The reason behind this article is the earthquake, which happened on May 22nd 2012, with epicenter near Pernik (5 km northwest of the city center, between the villages Meshtitsa and Vitanovtsi)
The aim of this study is to emphasize the role of the seismic factor for the dynamics of the Butrointsi rockfall
The comparison of the size of the rock blocks before and after the earthquake indicates that their dimensions are quite similar
Summary
The reason behind this article is the earthquake, which happened on May 22nd 2012, with epicenter near Pernik (5 km northwest of the city center, between the villages Meshtitsa and Vitanovtsi). The earthquake caused damage to many buildings in Pernik. The Butrointsi rockfall is situated about 29 km southeast of the earthquake epicenter. The main purpose of the study is to underline the role of the seismic factor for the development of the rockfall process and the landform. The Butrointsi rockfall has been monitored for a period of 4 years as one of the key areas in the dissertation paper of Rizova (2011). The gauging has been carried out for a sufficient period and provides reliable information about the morphodynamics in the area before the earthquake
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