eprintid: 1425
rev_number: 16
eprint_status: archive
userid: 2
dir: disk0/00/00/14/25
datestamp: 2015-02-10 13:38:33
lastmod: 2017-02-08 12:21:39
status_changed: 2015-04-27 12:10:52
type: article
metadata_visibility: show
creators_name: Nakaya, Shinji
corp_creators: Department of Civil Engineering, Shinshu University, Nagano, Japan
title: Fractal properties of seismicity in regions affected by large, shallow earthquakes in western Japan: Implications for fault formation processes based on a binary fractal fracture network model
ispublished: pub
subjects: MP2_3
divisions: EPOS-P
full_text_status: none
abstract: The temporal variation in the b value (which is defined as the slope of the Gutenberg-Richter frequency N–magnitude M relationship), log N = a-bM, and the multifractal dimension of the spatial distribution D q of seismic activity are analyzed using earthquake catalog data for regions affected by two recent large earthquakes in Japan. An anomalous decrease in D q and an increase in b value appear as a common seismic rupture response during the period of decreasing seismic energy release in the lead up to these large, shallow earthquakes. The change in fractal dimensions of faults inferred from sequential seismic events reflects the transition of fracture from a
dispersive rupture process to an anomalous rupture process and shows that the growth of the fault network through fault linkage is abruptly restrained in the fault formation
process leading up to the main shock. The anomalies in the fractal and multifractal dimensions prior to large earthquakes indicate that the anomalous activation and
clustering of smaller earthquakes represents criticality of the state around asperities along a fault.
date: 2005-01-25
date_type: published
publication: Journal of Geophysical Research
volume: 110
number: B1
publisher: American Geophysical Union
id_number: doi:10.1029/2004JB003097
refereed: TRUE
issn: 0148-0227
official_url: http://dx.doi.org/10.1029/2004JB003097
access_IS-EPOS: limited
owner: Publisher
citation:   Nakaya, Shinji  (2005) Fractal properties of seismicity in regions affected by large, shallow earthquakes in western Japan: Implications for fault formation processes based on a binary fractal fracture network model.  Journal of Geophysical Research, 110 (B1).  DOI: https://doi.org/10.1029/2004JB003097 <https://doi.org/10.1029/2004JB003097>