1966 Hualien earthquake

24°14′N 122°40′E / 24.24°N 122.67°E / 24.24; 122.67TypeStrike-slip[1]Areas affectedTaiwan and JapanMax. intensityMMI VII (Very strong) [2]TsunamiYesCasualties6 dead

The 1966 Hualien earthquake occurred on March 13 at 00:31 local time of Taiwan.[3] The epicenter was located in the offshore area between Yonaguni Island, Japan and Hualien, Taiwan.

The intensity in Yonaguni reached shindo 5.[4] Two people were reported dead in Yonaguni, Japan, and four in Taiwan.[5] Building damage was reported. A tsunami with a run-up height of 50 cm (20 in) was observed.[1]

This earthquake released a seismic moment of 4.86×1020 Nm. The magnitude of this earthquake was put at Ms 8.0, Mw 7.79,[6] MJMA 7.8, or ML 7.8.[7] This earthquake had a strike-slip faulting focal mechanism.

The fault plane solutions of this earthquake suggested that there is a sliver of crust off the east coast of Taiwan other than the Philippine Sea Plate. The map of shallow earthquakes shows that the Philippines are encircled by a zone of seismicity. There is a difference between the slip direction on the east coast of the Philippines and the relative motion between the Philippine Sea Plate and the Eurasian Plate. Together with other evidences, it has been suggested that most of the Philippines might belong to a minor plate other than the Eurasian Plate.[8]

See also

References

  1. ^ a b Ma, K.; Lee, M. (1997), "Simulation of historical tsunamis in the Taiwan region", Terrestrial, Atmospheric and Oceanic Sciences, 8 (1): 14, 25, 26, Bibcode:1997TAOS....8...13M, doi:10.3319/TAO.1997.8.1.13(T), ISSN 1017-0839
  2. ^ "Significant Earthquake Information". ngdc.noaa.gov. NOAA National Centers for Environmental Information. Retrieved 8 March 2022.
  3. ^ Kao, Honn (1998). "Can Great Earthquakes Occur in the Southernmost Ryukyu Arc-Taiwan Region?". Terrestrial, Atmospheric and Oceanic Sciences. 9 (3): 487. Bibcode:1998TAOS....9..487K. doi:10.3319/TAO.1998.9.3.487(TAICRUST). ISSN 1017-0839.
  4. ^ "与那国島周辺の地震". Jishin.go.jp. Retrieved 2013-11-11.
  5. ^ "地震と津波". Jma-net.go.jp. Archived from the original on 2013-01-23. Retrieved 2013-11-11.
  6. ^ Wang, Tan K.; Lin, Shen-Feng; Liu, Char-Shine; Wang, Cheng-Sung (2004). "Crustal structure of the southernmost Ryukyu subduction zone: OBS, MCS and gravity modelling" (PDF). Geophysical Journal International. 157 (1): 147–163. Bibcode:2004GeoJI.157..147W. doi:10.1111/j.1365-246X.2004.02147.x. hdl:246246/173952. ISSN 0956-540X.
  7. ^ "Archived copy" (PDF). hdl:246246/245626. Archived from the original (PDF) on 2011-10-03. Retrieved 2011-07-21.{{cite web}}: CS1 maint: archived copy as title (link)
  8. ^ Seno, Tetsuzo (1977). "The instantaneous rotation vector of the Philippine sea plate relative to the Eurasian plate" (PDF). Tectonophysics. 42 (2–4): 209–226. Bibcode:1977Tectp..42..209S. doi:10.1016/0040-1951(77)90168-8. Archived from the original (PDF) on 2012-05-18. Retrieved 2011-11-24.

External links

  • The International Seismological Centre has a bibliography and/or authoritative data for this event.
  • v
  • t
  • e
  • Xingtai (7.2, March 8) ‡†
  • Hualien (8.0, March 12)
  • Toro (6.8, March 20) †
  • Tashkent (5.1, April 26) †
  • Varto (6.8, Aug 19) †
  • Peru (8.1, Oct 17) †
† indicates earthquake resulting in at least 30 deaths
‡ indicates the deadliest earthquake of the year