Crustal attenuation from USArray ML amplitude tomography

• Published in: Geophysical Journal International
• Main Author: Hearn, Thomas M
• Format: Article in Journal/Newspaper
• Language: English
• Published: Oxford University Press (OUP) 2020
• Subjects: Geochemistry and Petrology; Geophysics; Andreas; north slope; Alaska
• Online Access: http://dx.doi.org/10.1093/gji/ggaa445; http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggaa445/33773676/ggaa445.pdf; http://academic.oup.com/gji/article-pdf/224/1/199/34193188/ggaa445.pdf

SUMMARY Seismic attenuation across the US is estimated using station ML magnitude data from the USArray. Station magnitudes are recalibrated back to amplitude and back projected in a 2-D tomography. Data represent the amplitudes of the horizontal components of the Lg phase. The western US shows regi...