Abstract
HYPOSAT is a program package developed to locate seismic sources.
It utilizes travel-time data, backazimuth (i.e., station-to-event
azimuth) values, and ray-parameter values. Phases considered are
those included in IASP91-type tables, and reflections from the Conrad
and from the Mohorovicić discontinuities, if local models
are used. The program follows the phase name recommendations of the
IASPEI Working Group on Standard Phase Names (see IS 2.1). Additionally,
all possible travel-time differences between different onsets at
individ-ual stations are estimated and can be included in the location
process (e.g., PcP-P as an addi-tional constraint for the source
depth). If amplitude and period measurements for P onsets or surface
waves are available, station magnitudes and an event magnitude can
also be estimated. More details about the general features of the
program can be found in Schweitzer (1997, 2001).
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