The 1975 Hawaii earthquake occurred on November 29 with a
moment magnitude
The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 pape ...
of 7.7 and a maximum Mercalli intensity of VIII (''Severe''). The shock affected several of the Hawaiian Islands and resulted in the deaths of two people and up to 28 injured. Significant damage occurred in the southern part of
the Big Island totalling $4–4.1 million, and it also triggered a small brief eruption of
Kilauea volcano.
The event generated a large tsunami that was as high as on Hawaii'i island and was detected in Alaska, California, Japan, Okinawa, Samoa, and on Johnston and Wake Islands. Significant changes to the shorelines along the southern coast of the Big Island with subsidence of was observed, causing some areas to be permanently submerged. The source of the event was the
Hilina Slump
The Hilina Slump, on the south flank of the Kilauea Volcano, Kīlauea Volcano on the southeast coast of the Hawaii (island), Big Island of Hawaii, Hawaiʻi, is the most notable of several landslides that ring each of the Hawaiian Islands. These ...
, which was also responsible for the more powerful
1868 Hawaii earthquake
The 1868 Hawaii earthquake was the largest recorded in the history of Hawaii island, with an estimated magnitude of 7.9 and a maximum Mercalli intensity of X (''Extreme''). The earthquake occurred at 4 p.m. local time on April 2, 1868 and caused ...
and tsunami.
See also
*
List of earthquakes in 1975
This is a list of earthquakes in 1975. Only earthquakes of magnitude 6 or above are included, unless they result in damage and/or casualties, or are notable for some other reason. All dates are listed according to UTC time. Maximum intensities ...
*
List of earthquakes in Hawaii
References
Sources
*
Further reading
*Rhett Butler; The 1871 Lāna‘i Earthquake in the Hawaiian Islands. Seismological Research Letters doi: https://doi.org/10.1785/0220200220
{{Oceania topic, List of earthquakes in
Earthquakes
Hawa ...
*
List of earthquakes in the United States
The following is a list of notable earthquakes and tsunamis which had their epicenter in areas that are now part of the United States with the latter affecting areas of the United States. Those in ''italics'' were not part of the United States wh ...
References
External links
USGS Hawaiian Volcano ObservatoryTsunami Animation: Hawaii 1975
– Pacific Tsunami Warning Center
The Pacific Tsunami Warning Center (PTWC) is one of two tsunami warning centers that are operated by NOAA in the United States. Headquartered on Ford Island, HI, the PTWC is part of an international tsunami warning system (TWS) program and s ...
*
1975 earthquakes
Earthquakes in Hawaii
Geography of Hawaii (island)
1975 tsunamis
Hawaii earthquake
Volcanic earthquakes
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