Measurements of mantle attenuation around the Yellowstone hotspot
Estimation of the seismic attenuation t* was performed using teleseismic P-wave spectra recorded by 174 broadband seismic stations around the Yellowstone hotspot, WY, US. P-wave spectra used were generated by earthquakes with a moment magnitude (MW) greater than 6.4 and with epicentral distances ranging from 30° to 180°, with focal depths greater than 200 km, within a time frame from 1995 to 2009. Multi-channel cross-correlation was used to align all waveforms, then the futterman operator was applied to estimate the variations in t*. t* residuals vary from -0.5 to 0.5s. Most dt*/d[travel time] ...
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