Abstract
This paper presents a statistical approach named multivariate hidden Markov modeling (MHMM) and employs it to study the spatial and temporal distribution of earthquakes in the 1985 Yellowstone earthquake swarm. It also explores the potential of the approach for identifying fluid signals in the swarm. As far as the spatial distribution component is concerned, the MHMM detected an upward migration of earthquakes at the beginning of the swarm. This is an important feature of fluid-triggered earthquakes. In terms of the temporal distribution component, the agreement between the MHMM and ETAS modeling results suggests the presence of fluid signals in mid-November of 1985.
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Li, Y., Anderson-Sprecher, R. Detection of Fluid Signals in the 1985 Yellowstone Earthquake Swarm. Math Geosci 43, 293–304 (2011). https://doi.org/10.1007/s11004-011-9319-8
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DOI: https://doi.org/10.1007/s11004-011-9319-8