Global Ground Truth Data Set with Waveform and Improved Arrival Data

摘要: Abstract : The main objective of this three-year research project is to produce a quality-controlled global GTO-5 event set, accompanied with waveform and groomed arrival time data sets. Our efforts are directed toward developing refining methodologies for generating new ground-truth(GT) events through multiple-event location analysis. To accomplish goal, we have developed the hybrid HDC-RCA (hypocentroidal decomposition reciprocal cluster analysis) methodology. HDC analysis determines accurate patterns relative provisional centroid using regional telesesmic phases. RCA then local phases only. accomplishes by keeping station fixed relocates as fictitious stations. Because both multiple typically recorded at each station, solving hypocentroid represents an over determined inversion problem that robust respect strong seismic-velocity biases.