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Title: Earthquake catalog-based machine learning identification of laboratory fault states and the effects of magnitude of completeness

Journal Article · · Geophysical Research Letters

Here, machine learning regression can predict macroscopic fault properties such as shear stress, friction, and time to failure using continuous records of fault zone acoustic emissions. Here we show that a similar approach is successful using event catalogs derived from the continuous data. Our methods are applicable to catalogs of arbitrary scale and magnitude of completeness. We investigate how machine learning regression from an event catalog of laboratory earthquakes performs as a function of the catalog magnitude of completeness. We find that strong model performance requires a sufficiently low magnitude of completeness, and below this magnitude of completeness, model performance saturates.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
LDRD; USDOE
Grant/Contract Number:
89233218CNA000001; EE0006762
OSTI ID:
1482951
Report Number(s):
LA-UR--18-26559
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 24 Vol. 45; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Machine Learning Reveals the State of Intermittent Frictional Dynamics in a Sheared Granular Fault journal July 2019
Pervasive Foreshock Activity Across Southern California journal August 2019
Machine Learning Reveals the State of Intermittent Frictional Dynamics in a Sheared Granular Fault text January 2019