1611 Sanriku earthquake
Local date | December 2, 1611 |
---|---|
Local time | 10:30 |
Magnitude | 8.1 Ms[1] |
Epicenter | 39°00′N 144°24′E / 39.0°N 144.4°E |
Areas affected | Japan: Pacific Ocean, Tōhoku region |
Tsunami | yes |
Casualties | About 5,000[2] |
The 1611 Sanriku earthquake (
Overview[edit]
At about 10:30 on December 2, 1611 (Keichō 16, 10th month, 28th day), there was a severe earthquake, and at about 14:00 (local time), this was followed by a devastating tsunami. According to old documents, the earth shook violently three times.
The estimated rupture area for the earthquake is similar to that calculated for the 1933 Sanriku earthquake.[5]
With this earthquake, the area along the Pacific Ocean in what is currently called the Sanriku Coast shook strongly, but only about 4-5 on the Shindo scale. The damage from the tsunami far exceeded that from the earthquake, so this is considered to be a tsunami earthquake. Consequently, the disaster caused by earthquake is also known as the "Keicho Sanriku tsunami earthquake". It would have been very similar to the 1605 Keichō Nankaidō earthquake, a tsunami earthquake in the Nankai Trough area.
Sources[edit]
The source of the earthquake was off the north coast of Sanriku. However, due to the time delay of nearly four hours before the tsunami arrived, there are questions about the exact location of the source.
Professor Kazuomi Hirakawa of Hokkaido University has found tsunami deposits on the southern part of Hokkaido and northern Sanriku from the early part of the 17th century. It is possible that the earthquake and tsunami in Sanriku was an enormous quake that resonated even in the area of the Kurile Trench off the eastern coast of Hokkaido.[6]
Damage[edit]
The tsunami reached its maximum estimated height of about 20 meters at Ōfunato, Iwate.[7]
The tsunami struck on the east coast of Sanriku from Sendai bay in the south to southeastern Hokkaido in the north, a greater length of coastline than was affected by the 1896 tsunami.[8] According to old documents, 1,783 people were killed in the Sendai Domain, and over 3000 horses and men in the Nanbu and Tsugaru domains. On the southern coast of Hokkaido, many Ainu were also drowned ("Hokkaido History"). Amongst the worst affected places was Ōtsuchi, with 800 deaths.[4]
See also[edit]
Notes[edit]
- ^ a b National Centers for Environmental Information (1972). "Significant earthquake". National Geophysical Data Center / World Data Service (NGDC/WDS): Significant Earthquake Database. National Geophysical Data Center, NOAA. doi:10.7289/V5TD9V7K. Retrieved 28 April 2020.
- ^ Utsu, T. (2004). "Catalog of Damaging Earthquakes in the World". IISEE. Retrieved 26 November 2011.
- ^ "Danger in the Lowground: The Japan Earthquake in Historical Context". hnn.us.
- ^ a b Atwater, B.F.; Musumi-Rokkaku S.; Satake K.; Tsuji Y.; Ueda K. & Yamaguchi D.K. (2005). "Kuwagasaki" (PDF). The Orphan Tsunami of 1700—Japanese Clues to a Parent Earthquake in North America. USGS. p. 41. Retrieved 28 November 2011.
- ^ Kawakatsu, H.; Seno T. (1983). "Triple Seismic Zone and the Regional Variation of Seismicity along the Northern Honshu Arc" (PDF). Journal of Geophysical Research. 88 (B5). American Geophysical Union: 4217. Bibcode:1983JGR....88.4215K. doi:10.1029/jb088ib05p04215. Retrieved 28 November 2011.
- ^ "17
世紀 、千島 で巨大 地震 か 1500キロにわたり大津 波 「慶長 三陸 」は、高 さ20mの巨大 津波 が襲 った道東 と同一 ? - MSN産経 フォト". Archived from the original on 2011-11-17. Retrieved 2011-11-26. - ^ "
図 16 1611年 12月2日 の慶長 三陸 地震 の津波 波高 分布 と震度 分布 (羽鳥 ,1975b)". www.jishin.go.jp. - ^ National Geophysical Data Center. "Comments for the Tsunami Event". Retrieved 28 November 2011.