02/17/1793 | 1793 Miyagi Earthquake


As described by Namegaya et al. (2004), the earthquake affected the whole Miyagi prefecture and parts of Iwate and Fukushima. Tsunami run-up reached 5.9m in Kamaishi City.

Events in the same region
Date Title Region Preferred Magnitude Quality*
869 Jul 09th 869 Jogan Earthquake Honshu 8.8 C
1454 1454 Honshu Earthquake Honshu 8.4 C
1677 Nov 04th 1677 Kanto Earthquake Honshu 8.4 C
1793 Feb 17th, 14:00 1793 Miyagi Earthquake Honshu 8.2 B
2011 Mar 11th, 05:46 2011 Tohoku Earthquake Honshu 9.1 A
  • GHEA (GHEC v1.0) -Albini P., Musson R.M.W., Rovida A., Locati M., Gomez Capera A.A., and Viganò D. (2014). The Global Earthquake History. Earthquake Spectra, May 2014, Vol.30, No.2, pp. 607-624. http://doi.org/10.1193/122013EQS297 - Link
  • Namegaya et al. (2004) -Namegaya, Y., Tsuji, Y., & Ueda, K. Estimation of fault model of the 1793 Miyagiken-Toho-Oki Earthquake by distributions of seismic intensities and tsunami heights. - Link
Event Characteristics
Preferred Magnitude 8.20 (7.10-8.20)
Epicenter 38.500°N, 144.500°E
Depth unknown
Tsunami yes
Paleo-Event no
Quality of Evidence B

Magnitude Range
Year Reference Magnitude
2014 GHEA (GHEC v1.0) 8.2 (7.1-8.2)

This table lists some of the most relevant publications in estimating the moment magnitude of this earthquake. If you think there are other important or new publications, please get in contact.