Auxiliary material for this article contains seven eps figures, one table, and one text.

Auxiliary material files may require downloading to a local drive depending on platform, browser, configuration, and size. To open auxiliary materials in a browser, click on the label. To download, Right-click and select “Save Target As…” (PC) or CTRL-click and select “Download Link to Disk” (Mac).

Additional file information is provided in the readme.txt.

grl29636-sup-0001-readme.txtplain text document0Kreadme.txt
grl29636-sup-0002-fs01.epsPS document2858KFigure S1. Temporal and spatial trends in b value leading up to the 2004 Sumatra earthquake.
grl29636-sup-0003-fs02.epsPS document1965KFigure 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.epsPS document1996KFigure S3. Long-term change in b value leading up to the Tohoku earthquake.
grl29636-sup-0005-fs04.epsPS document2526KFigure 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.epsPS document814KFigure S5. A test to verify the observed decrease in b with time.
grl29636-sup-0007-fs06.epsPS document723KFigure 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.epsPS document1040KFigure 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.txtplain text document0KTable S1. Summary of b values calculated for M9-class earthquakes using the ANSS catalog.
grl29636-sup-0010-txts01.txtplain text document0KText S1. The b values obtained for M9-class earthquakes.

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.