The term Detection seismology is commonly used to designate a specialized branch of seismology that deals with problems relevant to detecting and distinguishing between seismic signals originating from underground nuclear explosions and from other sources, especially earthquakes.
Many of the problems and research projects in detection seismology have also relevance to the more traditional earthquake seismology, but the emphasis of the research is often different. For example, many seismologists engaging in earthquake research are concerned with assessing earthquake hazard in various regions and analyzing the source characteristics of large, destructive earthquakes. In contrast, scientists working in the field of detection seismology are in many instances concerned with smaller seismic events, such as mining explosions, rockbursts and relatively moderate size earthquakes. An important goal for the research in detection seismology is to continue to lower the magnitude threshold at which detection, location and identification of small seismic events is feasible.
One of the main tools in detection seismology is seismic arrays, and research in seismic array technology and array processing methods have been a main focus of NORSAR’s research ever since the institution was established in 1968. These web pages provide snapshots of some of the activities of NORSAR in detection seismology, and also illustrate some of the advances that have been achieved in recent years.
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