List of foreshocks and aftershocks of the 2011 Tōhoku earthquake

Download coordinates as: This is a list of foreshocks and aftershocks of the 2011 Tōhoku earthquake.

For conciseness, only earthquakes with magnitudes greater than 7.0 or an intensity greater than lower-6 on the shindo scale are listed here.

Mw refers to the moment magnitude scale, while Mjma, Mjma, or Mj refer to the Japan Meteorological Agency magnitude scale.

The source was estimated to have a length of 28.7 km and a width of 53.2 km with a slip of 1.25 m.[3] Caused a 55 cm tsunami.

However, agreement toward the relationships has not been reached among the researchers.

Map of aftershocks until March 14 (first 4 days)
Visualization of intensity of aftershocks in the first few days