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SUMMARY:Global Observations of Deep Tectonic Tremor - Zhigang Peng - Georg
 ia Institute of Technology
DTSTART:20221005T150000Z
DTEND:20221005T160000Z
UID:TALK182072@talks.cam.ac.uk
CONTACT:Yihe Xu
DESCRIPTION:Deep tectonic tremor (also known as non-volcanic tremor) has b
 een observed along many major plate boundary faults around the world. It o
 ccurs primarily below the seismic-aseismic transition zone in the lower cr
 ust and is extremely sensitive to external stress perturbations. In this t
 alk\, I summarize tremor observations around the world. So far tremor is m
 ostly found along major subduction zones and strike-slip fault systems aro
 und the Pacific Rim. Elsewhere\, it is observed only in selected regions a
 long the Sumatra-Java subduction zones\, and western portion of the Alpine
 -Himalaya orogenic belt. I focus primarily on tremor triggered instantaneo
 usly by surface waves of remote earthquakes\, because it is relatively eas
 y to observe and hence allows us to quickly map out the tremor source regi
 on. A better mapping of tremor distribution can improve our understand of 
 the ambient conditions that host tremor and its physical mechanism.\n\nAdd
 itional Reading:\nPeng and Gomberg (2010): An integrated perspective of th
 e continuum between earthquakes and slow-slip phenomena\, Nature Geosci.\,
  3\, 599–607\, doi:10.1038/ngeo940. http://geophysics.eas.gatech.edu/zpe
 ng/zpeng_paper/Peng_Gomberg_NGEO_2010.pdf\n\nBehr and Burgmann (2021): Wha
 t’s down there? The structures\, materials and environment of deep-seate
 d slow slip and tremorPhil. Trans. R. Soc. A.3792020021820200218 https://r
 oyalsocietypublishing.org/doi/10.1098/rsta.2020.0218\n
LOCATION:Wolfson Lecture Theatre (virtual)
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