Building Services and Web Portal for GPS Time Series Data Analysis

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In recent years, there has been an increasing demand for methods of analyzing geodetic time series data, informed in part by the observation of unusual aseismic deformation events in GPS data collected from Cascadia, Japan, Peru, and Mexico. The QuakeSim project aims to address this demand by developing a set of GPS analysis methods that can be easily accessed and used by the geophysics research community through a Web services and Web portal framework. This paper presents one of these GPS analysis components, which perform hidden Markov model based segmentation of GPS time series.