Developing and Exploiting a Unique Dataset from South African Gold Mines for Source Characterization and Wave Propagation.

摘要

In this project, we have developed and exploited a unique seismic dataset to address the characteristics of small seismic events and the associated seismic signals observed at local (<200 km) and regional (<2000 km) distances. The dataset has been developed using mining-induced events fromthree deep gold mines in South Africa recorded on in-mine networks (<1 km) composed of tens of high frequency sensors, a network of four broadband stations installed as part of this project at the surface around the mines (1-10 km), and a network of existing broadband seismic stations at local/regional distances (50-1000 km) from the mines. The final dataset includes: (i) approximately 2 years (2007 and 2008) of continuous recording by the surface broadband array; and (ii) tens of thousands of mine tremors in the -3.4