Online material: Vs30 values, various distances estimated for recording stations, and corner frequencies of the low-cut filter applied to data for present study.

On 11 March 2011 a megathrust earthquake (M 9.0)—the largest recorded earthquake in the history of Japan—occurred off the Pacific coast of Tohoku-oki (Table 1). The earthquake ruptured the interplate boundary offshore of northeastern Honshu with several earthquake rupture models suggesting peak epicentral displacements up to 30–40 m and duration about 150 s. Several focal mechanism estimates (e.g., the weighted cumulative moment tensor [WCMT] with slab geometry from U.S. Geological Survey; http://earthquake.usgs.gov/earthquakes/eqinthenews/2011/usc0001xgp/finite_fault.php...

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