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The Drop of Relative Velocity Variation and Coherence Values Prior to Sinabung 2013 Eruptions.
The cross-correlations of ambient seismic noise at Sinabung volcano are analyzed from Februari 2013 to February 2014. Many erupstions occured during these periode, started on 15 September 2013. When looking at the variantions in the coda of the correlations, we can distinguish two types of measurements associated to two types of changes: relative velocity variantion anda wavefrom decoherence. Drop of relative velocity variantions and waveform.
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