Earthquakes and Tsunamis

We hope you enjoy your visit.

You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are some features you can't use. If you join our community, you'll be able to access member-only sections, and use many member-only features such as customizing your profile, sending personal messages, and voting in polls. Registration is simple, fast, and completely free.

Join our community!

If you're already a member please log in to your account to access all of our features:

Earthquakes and Tsunamis
Topic Started: Mar 2 2010, 02:27 AM (121 Views)
Sounding The Trumpet	Mar 2 2010, 02:27 AM Post #1
Advanced Member Posts: 187 Group: Members Member #5,144 Joined: October 20, 2009	I know the simple thing would be to perform a google search or something, but I can not google. When I click a link that google provides, my PC freezes up, so ............................ Does anyone have information on the perfect storm for a Tsumami? Does an earthquake need to happen adjacent to land, and in close proximity to a land formation for a Tsunami to be a devestating event? I read a topic in dreams about at Tsunami hitting the east coast but was curiouis to where the earthquake would be to cause a Tsunami to occur there. I think it is better for Hollywood to show a Tsunami hitting NYC, but just do not know how likely that would be.



TwilightRose	Mar 2 2010, 02:37 AM Post #2
Advanced Member Posts: 2,080 Group: Advanced Members Member #4,887 Joined: August 28, 2008	Good question! Here is what I found: Tsunami Geology - What Causes a Tsunami? What causes a tsunami?... A tsunami is a large ocean wave that is caused by sudden motion on the ocean floor. This sudden motion could be an earthquake, a powerful volcanic eruption, or an underwater landslide. The impact of a large meteorite could also cause a tsunami. Tsunamis travel across the open ocean at great speeds and build into large deadly waves in the shallow water of a shoreline. Subduction Zones are Potential Tsunami Locations Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous. This friction prevents a slow and steady rate of subduction and instead the two plates become "stuck". Earthquake Causes Tsunami Energy accumulates in the overriding plate until it exceeds the frictional forces between the two stuck plates. When this happens, the overriding plate snaps back into an unrestrained position. This sudden motion is the cause of the tsunami - because it gives an enormous shove to the overlying water. At the same time, inland areas of the overriding plate are suddenly lowered. Tsunami Races Away From the Epicenter The moving wave begins travelling out from where the earthquake has occurred. Some of the water travels out and across the ocean basin, and, at the same time, water rushes landward to flood the recently lowered shoreline. Tsunamis Travel Rapidly Across Ocean Basis Tsunamis travel swiftly across the open ocean. The map below shows how a tsunami produced by an earthquake along the coast of Chile in 1960(ironic how they used Chile as an example in this article!!!... from 1960!) traveled across the Pacific Ocean, reaching Hawaii in about 15 hours and Japan in less than 24 hours. http://geology.com/articles/tsunami-geology.shtml Edited by TwilightRose, Mar 2 2010, 02:40 AM.
	Twilight R


Quiet Watcher	Mar 2 2010, 02:37 AM Post #3
Advanced Member Posts: 685 Group: Advanced Members Member #5,001 Joined: February 4, 2009	STT This article describes a tsunami threat which could at some point threaten the East Coast. http://archives.cnn.com/2001/TECH/science/08/29/tidal.wave/ LONDON, England -- While stressing that there is no indication it could happen soon, Atlantic coastlines in Europe, Africa and the Americas are under threat from a monster wave of Hollywood -- even Biblical -- proportions, scientists have warned. They fear that a massive landslide following a major volcanic eruption in the Canary Islands would send a 300-foot wave across the Atlantic, causing devastation to coastal towns and cities. British and U.S. scientists who have issued the warning predict that, in the worst-case scenario, the tidal wave would destroy the coasts of Florida and Brazil. But the Western Sahara, Portugal, Spain, France and parts of the UK would also be hit. They fear that the mega-wave -- know as a tsunami -- could be generated by part of a mountain twice the size of Britain's Isle of Man crashing into the sea following an eruption of the Cumbre Vieja volcano on La Palma, in the Canary Islands -- part of the Spanish island chain off West Africa. Travelling at speeds of up to 500mph, the tsunami would be an unstoppable force and would be the biggest-ever recorded in history. Previous research by Dr Simon Day, of the Benfield Greig Hazard Research Centre at University College London predicted that a future eruption of Cumbre Vieja was likely to cause the western flank of the mountain to slide into the sea. The energy released by the collapse would be equal to the electricity consumption of the entire U.S. in six months. With Dr Steven Ward, from the University of California, Dr Day has produced a new model that predicts more accurately how big the tsunami will be and where it will strike. Immediately after the landslide, a dome of water almost 900 metres (3,000 ft) high and tens of kilometres wide will form, only to collapse and rebound. Its first target was expected to be the West Saharan coast of Morocco, where the wave would measure a devastating 330ft from crest to trough. Propelled by a series of crests and troughs, the tsunami would travel a distance of almost 155 miles in just 10 minutes, the model predicts. Racing at the speed of a jet aircraft, it would reach Florida and the Caribbean in eight or nine hours. A wall of water 164ft high -- higher than Nelson's column in London's Trafalgar Square -- would smash into the coasts of Florida and the Caribbean islands, the forecast predicts. The northern coast of Brazil would be hit by a wave more than 130ft high. The wave would travel four or five miles inland, flattening everything in its path. Meanwhile, a weaker, but still hugely destructive, wave was likely to travel along the western coast of the Iberian Peninsular and France and hit Britain's Atlantic coastline. Dr Day said: "The collapse will occur during some future eruption after days or weeks of precursory deformation and earthquakes. "An effective earthquake monitoring system could provide advanced warning of a likely collapse and allow early emergency management organisations a valuable window of time in which to plan and respond. "Eruptions of Cumbre Vieja occur at intervals of decades to a century orso and there may be a number of eruptions before its collapse. "Although the year to year probability of a collapse is therefore low, the resulting tsunami would be a major disaster with indirect effects around the world. "Cumbre Vieja needs to monitored closely for any signs of impending volcanic activity and for the deformation that would precede collapse." Like the rest of the Canary islands, the origin of La Palma is volcanic. La Palma is not only the steepest island in the world but has also been the most volcanically active of the Canary Isles in the past 500 years. There have been two eruptions on the island this century alone -- in 1949 and 1971. Other eruptions in recent history on La Palma occurred in 1470, 1585, 1646, 1677 and 1712. Tidal waves are not common in the Atlantic, although since 1990, 10 major tsunamis in the Pacific have killed more than 4,000 people. Scientists suspect an earthquake-triggered tsunami that killed more than 2,000 people in Papua New Guinea in 1998 was bolstered by an undersea landslide. Hawaii's worst experience in modern times came in 1946 when the April Fool's Day tsunami, generated by an earthquake in the Aleutian Islands, sent a 25-foot-high wall of water ashore, killing 173 people, mostly in Hilo. On May 23, 1960, a tsunami that hit Hilo killed 61 people. One of the most famous, and most devastating, tsunamis occurred after the Krakatoa volcano blew itself to pieces in 1883 -- a wave six metres high killed 30,000 people.



Sounding The Trumpet	Mar 2 2010, 02:48 AM Post #4
Advanced Member Posts: 187 Group: Members Member #5,144 Joined: October 20, 2009	would the water overtaking NYC/East coast scenario also occur if a asteroid/meteor hit in the atlantic ocean???



Quiet Watcher	Mar 2 2010, 03:01 AM Post #5
Advanced Member Posts: 685 Group: Advanced Members Member #5,001 Joined: February 4, 2009	If that happened with little or no warning.......



gibby62	Mar 2 2010, 08:10 AM Post #6
Adopted Child of God Posts: 2,987 Group: Advanced Members Member #4,933 Joined: October 29, 2008	Also, if the one island that has a volcano that splits the island and it falls into the ocean (literally) would also produce a devastating wave. Interestingly, when they were describing the mechanics of a tsunami on Saturday, they noted that it's not like throwing a stone in the water with ripples eminating from that spot but more from energy rising vertically and kind of "popping" out of the top that would create the tsunamis. Kind of like a big air bubble rising to the surface.
	Put on the full armor of God so that you can take your stand against the devil's schemes. For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. Eph 6:11-12


Shershalom	Mar 2 2010, 09:53 AM Post #7
Advanced Member Posts: 1,023 Group: Advanced Members Member #810 Joined: March 20, 2007	Quote: They fear that a massive landslide following a major volcanic eruption in the Canary Islands would send a 300-foot wave across the Atlantic, causing devastation to coastal towns and cities. British and U.S. scientists who have issued the warning predict that, in the worst-case scenario, the tidal wave would destroy the coasts of Florida and Brazil. They fear that the mega-wave -- know as a tsunami -- could be generated by part of a mountain twice the size of Britain's Isle of Man crashing into the sea following an eruption of the Cumbre Vieja volcano on La Palma, in the Canary Islands -- part of the Spanish island chain off West Africa. Travelling at speeds of up to 500mph, the tsunami would be an unstoppable force and would be the biggest-ever recorded in history. The energy released by the collapse would be equal to the electricity consumption of the entire U.S. in six months. Immediately after the landslide, a dome of water almost 900 metres (3,000 ft) high and tens of kilometres wide will form, only to collapse and rebound. Propelled by a series of crests and troughs, the tsunami would travel a distance of almost 155 miles in just 10 minutes, the model predicts. Racing at the speed of a jet aircraft, it would reach Florida and the Caribbean in eight or nine hours. A wall of water 164ft high -- higher than Nelson's column in London's Trafalgar Square -- would smash into the coasts of Florida and the Caribbean islands, the forecast predicts. The wave would travel four or five miles inland, flattening everything in its path. Looks like I'm a-going a-swimmin' ... I live about 2.5-3 miles from Atlantic Ocean in Central Florida. Anyone else hear ... MSNBC news reported that this earthquake in Chile on Saturday moved the earth off it's axis by about 3 inches, and shortened the day by a milisecond or two. Although scientists say it moved OFF it's axis, I wonder if this earthquake didn't move the axis back to where it's supposed to be. (After all, sciencetists have only been able to measure this stuff the last hundred years or so.) Yep ...definitely Well, better go and build a life raft for me and my doggies.
	SherShalom "Blessed is HE that comes in the name of YHVH." MATTHEW 23:39


Sounding The Trumpet	Mar 2 2010, 11:00 AM Post #8
Advanced Member Posts: 187 Group: Members Member #5,144 Joined: October 20, 2009	Yeah, I heard the 3 inches thing too. Enough 8.0+ earthquakes and we could be all whopper jawed.



1 user reading this topic (1 Guest and 0 Anonymous)


« Previous Topic · General Discussions · Next Topic »