| WC/ATWC FAQs |
Go to http://wcatwc.arh.noaa.gov/faq/frequently.php for WC/ATWC FAQs.
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| How Can We Prepare for a Tsunami? |
Go to http://nctr.pmel.noaa.gov/faq.php to find the answer.
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| Tell Me About the Dec. 26, 2004 Sumatra Tsunami |
Go to http://nctr.pmel.noaa.gov/faq.php to find the answer.
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| What are some of the worst tsunamis? |
Go to http://nctr.pmel.noaa.gov/faq.php to find the answer.
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| Why Are Locally Generated Tsunamis So Dangerous? |
A locally generated tsunami may reach a nearby shore in less than ten minutes. There is not sufficient time for the Pacific Tsunami Warning Center or for local authorities to issue a warning. &n
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| What Determines How Destructive a Tsunami Will Be Near the Origin and At a Distant Shore? |
Tsunamis arrive at a coastline as a series of successive crests (high water levels) and troughs (low water levels) - usually occurring 10 to 45 minutes apart. As they enter the shallow waters of
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| What Are the Factors of Destruction From Tsunamis? |
There are three factors of destructions from tsunamis: inundation, wave impact on structures, and erosion. Strong, tsunami-induced currents lead to the erosion of foundations and the collap
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| Why Aren't Tsunamis Seen at Sea or From the Air? |
In the deep ocean, tsunami wave amplitude is usually less than 1 m (3.3 feet). The crests of tsunami waves may be more than a hundred kilometers or more away from each other. Therefore, pa
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| What is a Mega-Tsunami and Can It Happen Today? |
The following is a position paper that was issued by the Tsunami Society concerning the occurrence of Mega-Tsunamis:
The mission of the Tsunami Society includes "the dissemination of knowledge about
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| Where and How Frequently are Tsunamis Generated? |
Tsunamis are disasters that can be generated in all of the world's oceans, inland seas, and in any large body of water. Each region of the world appears to have its own cycle of frequency and pa
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| What is a Tsunami? |
The phenomenon we call tsunami is a series of large waves of extremely long wavelength and period usually generated by a violent, impulsive undersea disturbance or activity near the coast or in the oc
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| Can Asteroids, Meteorites or Man-Made Explosions Cause Tsunamis? |
Fortunately, for mankind, it is indeed very rare for a meteorite or an asteroid to reach the earth. Although no documented tsunami has ever been generated by an asteroid impact, the effect
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| How Do Submarine Landslides, Rock Falls and Underwater Slumps Generate Tsunamis? |
Less frequently, tsunami waves can be generated from displacements of water resulting from rock falls, icefalls and sudden submarine landslides or slumps. Such events may be caused impulsively
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| How Do Volcanic Eruptions Generate Tsunamis? |
Although relatively infrequent, violent volcanic eruptions represent also impulsive disturbances, which can displace a great volume of water and generate extremely destructive tsunami waves in the imm
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| How Do Earthquakes Generate Tsunamis? |
By far, the most destructive tsunamis are generated from large, shallow earthquakes with an epicenter or fault line near or on the ocean floor. These usually occur in regions of the earth charac
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