Global rupture parameters for deep and intermediate-depth earthquakes

Piero Poli, Germán A. Prieto

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

©2016. American Geophysical Union. All Rights Reserved.We investigate the global rupture parameters for deep and intermediate-depth earthquakes. From measurements of rupture duration and radiated seismic energy we estimate stress drop, apparent stress, and radiation efficiency and obtain a detailed earthquake energy budget. From scaling of the source parameters we highlight differences between crustal and deep seismicity, with the latter showing larger fracture energies. The observed increase of radiation efficiency with depth suggests that rupture mechanism for deep and intermediate-depth events differs. In agreement with previous studies we observe along-strike variability of rupture properties for deep and intermediate-depth earthquakes, correlating with slab morphology, plate age, or presence of volcanic structures.
Original languageEnglish (US)
Pages (from-to)8871-8887
Number of pages17
JournalJournal of Geophysical Research: Solid Earth
DOIs
StatePublished - Dec 1 2016

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rupture
earthquake
source parameters
energy budget
energy
seismicity
slab
parameter
radiation

Cite this

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title = "Global rupture parameters for deep and intermediate-depth earthquakes",
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Global rupture parameters for deep and intermediate-depth earthquakes. / Poli, Piero; Prieto, Germán A.

In: Journal of Geophysical Research: Solid Earth, 01.12.2016, p. 8871-8887.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Global rupture parameters for deep and intermediate-depth earthquakes

AU - Poli, Piero

AU - Prieto, Germán A.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - ©2016. American Geophysical Union. All Rights Reserved.We investigate the global rupture parameters for deep and intermediate-depth earthquakes. From measurements of rupture duration and radiated seismic energy we estimate stress drop, apparent stress, and radiation efficiency and obtain a detailed earthquake energy budget. From scaling of the source parameters we highlight differences between crustal and deep seismicity, with the latter showing larger fracture energies. The observed increase of radiation efficiency with depth suggests that rupture mechanism for deep and intermediate-depth events differs. In agreement with previous studies we observe along-strike variability of rupture properties for deep and intermediate-depth earthquakes, correlating with slab morphology, plate age, or presence of volcanic structures.

AB - ©2016. American Geophysical Union. All Rights Reserved.We investigate the global rupture parameters for deep and intermediate-depth earthquakes. From measurements of rupture duration and radiated seismic energy we estimate stress drop, apparent stress, and radiation efficiency and obtain a detailed earthquake energy budget. From scaling of the source parameters we highlight differences between crustal and deep seismicity, with the latter showing larger fracture energies. The observed increase of radiation efficiency with depth suggests that rupture mechanism for deep and intermediate-depth events differs. In agreement with previous studies we observe along-strike variability of rupture properties for deep and intermediate-depth earthquakes, correlating with slab morphology, plate age, or presence of volcanic structures.

U2 - 10.1002/2016JB013521

DO - 10.1002/2016JB013521

M3 - Article

SP - 8871

EP - 8887

JO - Journal of Geophysical Research: Solid Earth

JF - Journal of Geophysical Research: Solid Earth

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