There might be a tsunami alert after many researchers have recently become interested in the island of Kaua’i where a massive sinkhole was discovered not long ago.
According to them, the geological feature of Makauwahi is placed at around 100 meters from the ocean in a hardened dune and is the single paleo-tsunami deposit in Hawaii known from the 16th century.
A team of researchers has registered the information and is trying to determine what are the chances for a future tsunami. The statistics of the study showed that there is the possibility of a 9+ Magnitude earthquake in the Aleutian Islands with the power to create a mega-tsunami that will devastate Hawaii.
However, the probability for a mega-tsunami in Hawaii in the 50 years is 9%. A disaster of this enormous proportion would take its toll on 300,000 people and will make a $40 billion hole in the budget.
According to the geophysicist and lead author at the UHM School of Ocean and Earth Science and Technology, Rhett Butler, there has never been a mega-tsunami in Hawaii yet, but if a 9 Magnitude earthquake will hit Hawaii, they are still prepared for the worst case scenario.
Together with his co-authors, William Templeton and Neil Frazer, Butler developed a numerical model based on plate tectonics which can use recorded historical data and information from the five deadliest earthquakes since 1900: Kamchatka, 1952; Chile, 1960; Alaska, 1964; Sumatra-Andaman, 2004; and Tōhoku, 2011.
According to them, these five massive events are only half of the entire seismic activity that was discharged globally since 1900. The earthquake from Japan, Tōhoku, provoked a tsunami that reached Hawaii.
Back then, the waters extended up to the East Kamehameha Avenue intersection and also made their way through the concrete jersey barriers into the roadway of Kahului Beach Road.
Last but not least, the 1946 deadly tsunami, which was not previously mentioned, was generated by a strong earthquake which occurred in the Aleutian Islands area.
According to the USG Hawaiian Volcano Observatory, between the arrival of a tsunami and an earthquake, there is at least a gap of 4.5 hours which can provide enough time for everyone to get shelter on high ground.
Presently, in their work to prevent any future tsunami disaster, the team is trying to find new methods to measure smaller earthquakes that occur in the Pacific.
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