Through this course, many topics were analyzed. It was interesting to know that all waves, even from the smallest ripple to the most destructive tsunami, have similar characteristics. For example they all have crests, troughs, wave heights, lengths, and periods. Also, water particles that make up the waves all move in identical orbital patterns and only when waves become unstable this motion is destroyed.…
Japan’s devastating combination of earthquake and tsunami was a wakeup call reminding companies across the world how much they rely on nature to commerce business. On Friday 11 March 2011, an earthquake measuring 9.0 on Richter scale struck off Japan’s north-east coast of Tohoku which happened at 2:46pm (Alabaster et al. 2011). The massive earthquake was caused due to thrust faulting where rocks placed lower in the earth’s crust get pushed over the overlying layers (Alabaster et al. 2011). After the earthquake, the shadow depth underneath the ocean triggered a major tsunami hazard that reached height of up to 40.5 meters, which later on experienced rapidly after the quake.…
A tsunami has a much smaller amplitude (wave height) offshore, and a very long wavelength (often hundreds of kilometers long), which is why they generally pass unnoticed at sea, forming only a passing "hump" in the ocean. Tsunami have been historically referred to as tidal waves because as they approach land, they take on the characteristics of a violent onrushing tide rather than the sort of cresting waves that are formed by wind action upon the ocean (with which people are more familiar). Since they are not actually related to tides the term is considered misleading and its usage is discouraged by oceanographers. [1] Since not all tsunami occur in harbors, however, that term is equally misleading, although it does have the benefit of being misleading in a different language.…
It’s almost hard to believe the havoc entailed with a tsunami. The Ocean is so huge that it travels that far and still picking up speed. The after math of one disaster becomes several clenching catastrophes. The variation of a wave train catching people by surprise, a powerful water wall delivers about a hundred thousand tons of water. The creation of a tsunami is wondrous how it grows so quick. But where are the warning signs?…
Maramai , A. "Tsunamis in the Aeolian Islands ." Marine Geology . 215.1-2 (2005): n. page. Web. 10 Sep. 2012.…
A tsunami can kill thousands of people and level entire blocks in mere seconds. See how much you know about these walls of water (tsunami safety tips).…
Natural disaster is a phenomenon that happens naturally, threatening the humans ' lives and damaging the properties. On Friday, 11 March 2011 at 14:46:23 JST, a 9.0 magnitude earthquake happened under the sea of Japan and cause a tsunami with height 133 feet in Tōhoku. It caused thousands of people to die, injured and missing, and damaging…
Tsunami waves do not resemble normal sea waves, because their wavelength is far longer. Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide, and for this reason they are often referred to as tidal waves. Tsunamis generally consist of a series of waves with periods ranging from minutes to hours, arriving in a so-called "wave train".[4] Wave heights of tens of metres can be generated by large events. Although the impact of tsunamis is limited to coastal areas, their destructive power can be enormous and they can affect entire ocean basins; the 2004 Indian Ocean tsunami was among the deadliest natural disasters in human history with over 230,000 people killed in 14 countries bordering the Indian Ocean.…
Tsunami s are a series of giant sea waves created when a large volume of a body of water, such as an ocean, is rapidly displaced. Earthquakes, volcanic eruptions and other underwater explosions, landslides, asteroid impacts, and other mass movements above or below water all have the potential to generate a tsunami. Due to the immense volumes of water and energy involved, the effects of tsunamis can be devastating. Their hazards can be split into primary and secondary effects. Primary effects are the immediate effects of a hazard impact whereas secondary effects are the after-effects that occur as a result of the hazard and can be present for a long time, as the problems do not stop when the hazard event is over.…
Tsunamis, triggered by an undersea earthquake as well as seiches – waves coming from lakes shaken by a temblor – can submerge whole communities, sweep away edifices, topple trees and drown people.…
The origins of a tsunami can be traced to the large displacement of water due to disturbances to the body of water usually by sub-oceanic earthquakes. This in…
49. Dr. Stephen Cohen et al.(2005) The 2004 Indian Ocean Tsunami: Six Month Report June 2005 The Sigur Center Asia Papers [online] available from: http://www2.gwu.edu/~elliott/assets/docs/research/tsunamiinderfurth.pdf…
All tsunamis are caused by the sudden displacement of large volumes of water. All are the result of violent events with enough power to displace large volumes very rapidly. Moreover, Tsunamis are often referred to high waves of water caused by changes in the flow and surge of the ocean. On the other hand, Tsunamis can be caused by a few different factors, which are an earthquake, a large-scale undersea landslide, a submarine volcanic eruption (Cause of Tsunami, n.d.).…
On the morning of December 26, 2004 a magnitude 9.3 earthquake struck off the Northwest coast of the Indonesian island of Sumatra. The earthquake resulted from complex slip on the fault where the oceanic portion of the Indian Plate slides under Sumatra, part of the Eurasian Plate. The earthquake deformed the ocean floor, pushing the overlying water up into a tsunami wave. The tsunami wave devastated nearby areas where the wave may have been as high as 25 meters (80 feet) tall and killed nearly 300,000 people from nations in the region and tourists from around the world. The tsunami wave itself also traveled the globe, and was measured in the Pacific and many other places by tide gauges. Measurements in California exceeded 40 cm in height, while New Jersey saw water level fluctuations as great as 34 cm .…
The term tsunami originates from Japanese and means “harbour wave” .It is a series of waves when a body of water, such as an ocean is rapidly displaced on a massive scale. Tsunamis cannot be prevented or precisely predicted, but there are many systems being developed to warn and save the people of regions with a high risk of tsunamis before the wave reaches land.…