Waveloc in a Laterally Homogenous Earth : a Method of Circles 56 2.2

My choice of research projects over the past decade has been rather eclectic, covering aspects relating to both seismic sources and Earth structure. There is, however, a consistent theme, and that is a fascination with the large variety of methods for extracting pertinent information from seismic data. In this thesis, I give an brief, largely chronological outline of the steps and insights that have informed my current thinking on this theme, going into more detail on two methods that I have recently developed: FLEXWIN, for automatically selecting the most appropriate time-windows on complex seismograms in which to make measurements, and WaveLoc, for automatically detecting and locating seismic phenomena from continuous waveform data by exploiting the coherence of information across a seismic network. Such tools, based on the the integration and automation of practical seismological “know-how”, allow us to exploit seismological data more completely, and are becoming indispensable in the context of the enormous volume of data produced by modern seismic networks. iv te l-0 07 82 64 2, v er si on 1 30 J an 2 01 3