Search Results - "Mayeda, Kevin"

A new spectral ratio method using narrow band coda envelopes: Evidence for non-self-similarity in the Hector Mine sequence by Mayeda, Kevin, Malagnini, Luca, Walter, William R.

“…The use of local and regional S‐wave coda is shown to provide stable amplitude ratios that better constrains source differences between event pairs. We first…”
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How to Invert Multi-Band, Regional Phase Amplitudes for 2-D Attenuation and Source Parameters: Tests Using the USArray by Phillips, W. Scott, Mayeda, Kevin M., Malagnini, Luca

“…We inverted for laterally varying attenuation, absolute site terms, moments and apparent stress using over 460,000 Lg amplitudes recorded by the USArray for…”
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Apparent stress and corner frequency variations in the 1999 Taiwan (Chi-Chi) sequence: Evidence for a step-wise increase at Mw ∼ 5.5 by Mayeda, Kevin, Malagnini, Luca

“…Apparent stress and corner frequencies are measured for the Chi‐Chi, Taiwan sequence beginning with the Mw 7.6 mainshock on 20 September 1999. Using the coda…”
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Strong evidence for non-similar earthquake source scaling in central Italy by Malagnini, Luca, Scognamiglio, Laura, Mercuri, Alessia, Akinci, Aybige, Mayeda, Kevin

“…The scaling of earthquakes of the Central Apennines (Italy) is investigated using broadband seismograms from the Colfiorito sequence (4 ≤ MW ≤ 6). Our results…”
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Scaling Transition in Earthquake Sources: A Possible Link Between Seismic and Laboratory Measurements by Malagnini, Luca, Mayeda, Kevin, Nielsen, Stefan, Yoo, Seung-Hoon, Munafo’, Irene, Rawles, Christopher, Boschi, Enzo

“…We estimate the corner frequencies of 20 crustal seismic events from mainshock–aftershock sequences in different tectonic environments (mainshocks 5.7 <  M W…”
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High-stress strike-slip faults in the Apennines: An example from the 2002 San Giuliano earthquakes (southern Italy) by Malagnini, Luca, Mayeda, Kevin

“…Under the hypotheses that the high‐frequency part of the seismic spectrum is controlled by source duration and by peak slip velocity, we applied a recent coda…”
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Evidence for non-self-similarity and transitional increment of scaled energy in the 2005 west off Fukuoka seismic sequence by Yoo, Seung-Hoon, Rhie, Junkee, Choi, Hoseon, Mayeda, Kevin

“…We investigated seismic scaling relations of the 2005 west off Fukuoka seismic sequence in Japan using a coda‐based methodology. Two independent methods such…”
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Evidence for non-constant energy/moment scaling from coda-derived source spectra by Mayeda, Kevin, Gök, Rengin, Walter, William R., Hofstetter, Abraham

“…We present two lines of evidence showing the ratio of seismically radiated energy (ER) to seismic moment (Mo) increases with increasing moment for crustal…”
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Attenuation Tomography of the Yellow Sea/Korean Peninsula from Coda-source normalized and direct Lg Amplitudes by Ford, Sean R., Phillips, William S., Walter, William R., Pasyanos, Michael E., Mayeda, Kevin, Dreger, Douglas S.

“…We invert for regional attenuation of the crustal phase Lg in the Yellow Sea/Korean Peninsula (YSKP) using three different amplitude attenuation tomography…”
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Regional body-wave attenuation using a coda source normalization method: Application to MEDNET records of earthquakes in Italy by Walter, William R., Mayeda, Kevin, Malagnini, Luca, Scognamiglio, Laura

“…We develop a new methodology to determine apparent attenuation for the regional seismic phases Pn, Pg, Sn, and Lg using coda‐derived source spectra. The…”
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An application of the coda methodology for moment-rate spectra using broadband stations in Turkey by Eken, Tuna, Mayeda, Kevin, Hofstetter, Abraham, Gök, Rengin, Örgülü, Gonca, Turkelli, Niyazi

“…A recently developed coda magnitude methodology was applied to selected broadband stations in Turkey for the purpose of testing the coda method in a large,…”
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2-D or not 2-D, that is the question: A northern California test by Mayeda, Kevin, Malagnini, Luca, Phillips, W. Scott, Walter, William R., Dreger, Douglas

“…Reliable estimates of the seismic source spectrum are necessary for accurate magnitude and energy estimation. In particular, how seismic radiated energy scales…”
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Source radiation invariant property of local and near‐regional shear‐wave coda: Application to source scaling for the M w 5.9 Wells, Nevada sequence by Mayeda, Kevin, Malagnini, Luca

“…This study documents another unique property of local and regional shear‐wave coda: that scattering in the Earth's crust averages out source heterogeneities…”
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Source radiation invariant property of local and near-regional shear-wave coda: Application to source scaling for the Mw 5.9 Wells, Nevada sequence by Mayeda, Kevin, Malagnini, Luca

“…This study documents another unique property of local and regional shear‐wave coda: that scattering in the Earth's crust averages out source heterogeneities…”
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A UK M w catalogue derived from coda envelopes by Peach, Charlie, Nippress, Stuart E J, Green, David N, Mayeda, Kevin, Wookey, James M, Werner, Maximilian J

“…The United Kingdom (UK) experiences low-to-moderate levels of seismicity; only 12 onshore earthquakes with local magnitude (ML) ≥ 4.0 have been recorded in the…”
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Source scaling comparison and validation in Central Italy: data intensive direct Swaves versus the sparse data coda envelope methodology by Morasca, Paola, Bindi, Dino, Mayeda, Kevin, Roman-Nieves, Jorge, Barno, Justin, Walter, William R, Spallarossa, Daniele

“…SUMMARY Robustness of source parameter estimates is a fundamental issue in understanding the relationships between small and large events; however, it is…”
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Source scaling comparison and validation in Central Italy: data intensive direct S waves versus the sparse data coda envelope methodology by Morasca, Paola, Bindi, Dino, Mayeda, Kevin, Roman-Nieves, Jorge, Barno, Justin, Walter, William R, Spallarossa, Daniele

“…Robustness of source parameter estimates is a fundamental issue in understanding the relationships between small and large events; however, it is difficult to…”
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Earthquake stress via event ratio levels: Application to the 2011 and 2016 Oklahoma seismic sequences by Walter, William R., Yoo, Seung‐Hoon, Mayeda, Kevin, Gök, Rengin

“…We develop a new methodology for determining earthquake stress drop and apparent stress values via spectral ratio asymptotic levels. With sufficient bandwidth,…”
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Energy radiation from intermediate- to large-magnitude earthquakes: Implications for dynamic fault weakening by Malagnini, Luca, Nielsen, Stefan, Mayeda, Kevin, Boschi, Enzo

“…The amount of energy radiated from an earthquake can be measured using recent methods based on earthquake coda signals and spectral ratios. Such methods are…”
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Source radiation invariant property of local and near-regional shear-wave coda: Application to source scaling for the M sub(w) 5.9 Wells, Nevada sequence by Mayeda, Kevin, Malagnini, Luca

“…This study documents another unique property of local and regional shear-wave coda: that scattering in the Earth's crust averages out source heterogeneities…”
Get full text