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Beach Erosion in Hawaii
1
Transcript
References/Hyperlinks
- http://www.geo.arizona.edu/geo5xx/geos577/projects/knutson/Earthquakes.htm
- https://volcanoes.usgs.gov/observatories/hvo/about_earthquakes.html
- http://tsunami.org/8stories/narratives/13_michael_stearns_halape.html
- http://www.drgeorgepc.com/Tsunami1975Hawaii.html
- https://www.ngdc.noaa.gov/hazardimages/event/show/38
Kalapana Earthquake
Aftermath
- The district of Hilo faced the most damages of the earthquake
- The tsunami affected the south, east and west coasts of the Big Island
- Minor damages to the harbors of Catalina Island, Califronia
Cassandra Natividad
Nasir Gazdar
GG 103 CRN# 21544
Crustal Displacements
- Caused an uplift specifically in the shorelines and the offshore line area
- Slope failure and subsidence on the southern,eastern and western coastline of the island
- The summit of Kilauea subsided, causing a small eruption as well.
- Displacements in these areas also occurred.
Kalapana Earthquake
Date: November 29, 1975
Kilauea, Hawai'i
Witnesses
- 32 campers were at Halape beach park near the base of a cliff when it happened
- 10 people included in a boyscout hike during this time personally were awoken by the magnitude of both earthquakes
Occurance
Kilauea Eruption
- Combination of 2 earth quakes, and a Mercalli intensity of VIII (Severe)
- 1: at 3:35 AM (PST), with a magnitude of 5.7 and struck on Kilauea's south flank.
- 2: at 4:48 AM (PST),with a magnitude of 7.2 and triggered a tsunami
- influenced by magnetic movement
- Created a slight eruption
- No one was killed during the eruption
- The only thing that remains is a "No Parking" sign in that area
- Samples have been taken from the volcano to predict when it might strike again
Damages
- Killed two people, injured 28
- Destroyed houses, fishing boats, piers
- Triggered a slight eruption on Kilauea
- $4.1 million in damages
- Damage from tsunami on the south coast caused fatalities, injuries and property losses
Tsunami
- Earthquake caused a large coastal block that subsided into the ocean
- Caused some shorelines to permanently be submerged
- Tsunami warning was issued after the first tsunami struck (84 seconds) due to
- Wave struck 30 sec after the tsunami hit
Facts
The earthquakes created a tsunami that was 47 feet tall and could be detected in other places such as Japan, California and Samoa
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