Passive Seismic – a tool for early stage exploration

Sisprobe

Ambient Noise Surface Wave Tomography (ANSWT) is a relatively new passive seismic method for mineral exploration that has been used on around 60 prospects worldwide over the past 5 years. The relatively low cost and ease of sensor installation makes it an attractive early stage tool. The output is a 3D seismic velocity model which can show the major units and/or structures if sufficient velocity constrast is present. Sometimes the horizontal-to-vertical ratio (HVSR) is also useful to constrain and enhance the inversions.

This workshop will give a short introduction to the theory of ambient noise interferometry and data processing, followed by examples on cover mapping, geological units, fault delineation as well as a few examples on geotechnical monitoring applications (TSF walls, slopes, etc.).