Decade-scale decrease inb value prior to the M9-class 2011 Tohoku and 2004 Sumatra quakes

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Filename	Format	Size	Description
grl29636-sup-0001-readme.txt	plain text document	0K	readme.txt
grl29636-sup-0002-fs01.eps	PS document	2858K	Figure S1. Temporal and spatial trends in b value leading up to the 2004 Sumatra earthquake.
grl29636-sup-0003-fs02.eps	PS document	1965K	Figure S2. Distributions of b values, their uncertainty (sigma), and completeness magnitude (Mc) off the Pacific coasts of Hokkaido, Tohoku, and Kanto for the period 1965–1989.
grl29636-sup-0004-fs03.eps	PS document	1996K	Figure S3. Long-term change in b value leading up to the Tohoku earthquake.
grl29636-sup-0005-fs04.eps	PS document	2526K	Figure S4. Distribution of b values for various radii to collect events for calculating the b value and minimum magnitudes employed in truncating the JMA catalog to discard incomplete data prior to analysis.
grl29636-sup-0006-fs05.eps	PS document	814K	Figure S5. A test to verify the observed decrease in b with time.
grl29636-sup-0007-fs06.eps	PS document	723K	Figure S6. Depth histogram of M>=2.5 seismicity used for Figure 2B, along with the plot of b values as a function of depth.
grl29636-sup-0008-fs07.eps	PS document	1040K	Figure S7. Distribution of b values obtained from M>=3.0 seismicity at depths of 0–60 km off the Pacific coast of Hokkaido between 1 January 2006 and 26 April 2011.
grl29636-sup-0009-ts01.txt	plain text document	0K	Table S1. Summary of b values calculated for M9-class earthquakes using the ANSS catalog.
grl29636-sup-0010-txts01.txt	plain text document	0K	Text S1. The b values obtained for M9-class earthquakes.

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