Subjects:
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Tsunami waves can be the most far-reaching destructive force in the megathrust earthquake. Though there are new building standards that contractors must adhere to, there are still no specific, comprehensive scenarios for all high-hazard, high-risk areas of the province. The Cowichan Valley is located on southeastern Vancouver Island. 0 on the Richter scale, it is inevitable that there will be considerable damage and loss of life. Seismologists connected the two catastrophes by allowing for tsunami travel time to Japan and time zone difference. Though the Japanese did not necessarily make a connection between earthquakes and tsunamis, they did keep records
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that show most of the tsunamis that occured during that time. 0 and occurred on January 26, 1700, at around 9 pm!
Another valuable source to the history of the megathrust earthquake is from legend passed down orally from generation to generation from the first nation people. At first, Japanese scientists assumed that it was the result of a local earthquake, but later investigation showed that it was the result of a giant earthquake in Cascadia. A lot of buildings are only now being built to “earthquake standards,” but the upgrading of old buildings requires time.
Conclusion:
The threat of earthquakes is constant throughout the Ring of Fire. The cost to rebuild and repair combined with the damage to the economy is staggering; often taking generations to recover. Geologists have noted changes in tree ring growth from coastal old-growth forests; this suggests a sudden, widespread
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subsidence and drowning of roots. The initial objectives of this regional array were to 1) provide high-quality GPS data for global geodynamic studies; 2) provide a precise, common reference frame for all deformation surveys carried out in this active seismic region; and 3) serve as a strain meter to map
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regional strain and monitor possible transient strain signals.
Essay's Topics
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