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Wednesday, October 7, 2009

How to handle this Tsunami and Earthquake

This may help you all

1. If you are at home and hear there is a tsunami warning, you should make sure your entire family is aware of the tsunami. Your family should evacuate your house if you live in a tsunami evacuation zone.

2. If you are at the beach or near the ocean and you feel the earth shake, move immediately to higher ground. Do not wait for a tsunami warning to be announced.

3. If you are on a ship or boat, do not return to port if you are at sea and a tsunami warning has been issued for your area. Tsunami can cause rapid changes in water level and unpredictable dangerous current in harbours and ports.

What is Tsunami

Tsunami is a Japanese word with the English translation, "harbor wave." 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 ocean. When a sudden displacement of a large volume of water occurs, or if the sea floor is suddenly raised or dropped by an earthquake, big tsunami waves can be formed by forces of gravity. Earthquakes, landslides, volcanic eruptions, explosions, and even the impact of cosmic bodies, such as meteorites, can generate tsunamis. Tsunamis can savagely attack coastlines, causing devastating property damage and loss of life.

Tsunamis can be generated when the sea floor abruptly deforms and vertically displaces the overlying water. Tectonic earthquakes are a particular kind of earthquakes that are associated with the earth's crustal deformation; when these earthquakes occur beneath the sea, the water above the deformed area is displaced from its equilibrium position. Waves are formed as the displaced water mass, which acts under the influence of gravity, attempts to regain its equilibrium. When large areas of the sea floor elevate or subside, a tsunami can be created.

Just like other water waves, tsunamis begin to lose energy as they rush onshore - part of the wave energy is reflected offshore, while the shoreward-propagating wave energy is dissipated through bottom friction and turbulence. Despite these losses, tsunamis still reach the coast with tremendous amounts of energy. Tsunamis have great erosional potential, stripping beaches of sand that may have taken years to accumulate and undermining trees and other coastal vegetation. Capable of inundating, or flooding, hundreds of meters inland past the typical high-water level, the fast-moving water associated with the inundating tsunami can crush homes and other coastal structures. Tsunamis may reach a maximum vertical height onshore above sea level, often called a run up height, of 10, 20, and even 30 meters.

Tsunami wave can travel at the speed of a commercial jet plane, over 800 km/h. They can move from one side of the Pacific Ocean in less than a day. The waves can be extremely dangerous and damaging when they reach the shore.

Making the simulator

The TGEA model earth would be a basic dts sphere. It would then have some curved meshes (dts objects) mounted to on it to simulate the shifting continental plates. The model earth and moon would respond to real game physics for gravity to simulate an orbit. The dts mesh plates would also respond to the gravitational pull of the sun and moon. In the TGEA simulation, the sun could simply be a fixed gravitational spot (and source of light).

Some plates are known to be on top, and others to be on the bottom where they meet, so this is kind of important. To do it right, the tectonic plate meshes would need to have collision detection much better than a simple bounding box. It can't be built to actual scale (distance between a scaled down version of the earth and moon is too great for a basic TGEA map), and the physics can only approximate the real pull... but a basic approximation of the theory could be done.
Earth Plate.

Solar Eclipse

A solar eclipse means that the moon is blocking the sun. The moon has enough gravitational pull to cause the tides other natural phenomena on earth. The sun has enough gravitational pull to keep the earth in orbit. The theory is that during a solar eclipse, the moon has the Sun's added pull on the earth's tectonic plates. When the Sun and Moon are together on one side of the planet, they pull together and lift up the earth's tectonic plate, just beneath the eclipse. This causes the plate to shift upward, and then an earth quake when the lifted plate gets the little extra push (lift) it needed to move over its neighboring plate. The theory may be hair brained, or it might actually have some pull to it.

The problem is, its not exactly the same theory... its not a "solar eclipse" causing the earthquake, its the moon inline with the gravitational pull of the other planets.

How the eclipse start


The eclipse quake theory is as follows, When the gravitational force of the sun and moon are both pulling on a plate that has not had series of recent earth quakes, the extra pull is all that is needed to "pop the seam" and cause a major quake.

Tectonic plates

The theory that the gravitational pull of the Sun and Moon pulling together will do the following things.

1. Lift the tectonic plates
2. Cause the tide to rise more than usual
3. Cause an underground molten magma tide to dip and raise the plates following the water tide.

Taken all the time data from the Nasa eclipse site into an excel spread sheet four the four tectonic plates in the region. Assumed an hour delay for each event following the lunar eclipse, and then summed the values. I assumed that the events would last longer for the fluids, water and molten magma than for dry land. And then summed the values four all 4 plates where Japan sits.The blue path above shows the lunar path that will achieve the full solar eclipse at around the noon. Red dots show where the solar eclipse will be full.

Monday, September 21, 2009

earthquake and Tsunami

Hi, all my friends.I just read an article on tsunami, I just wanted to let you know that please stay away from the beaches all around in the month of July. There is a prediction that there will be another tsunami or earthquake hitting on 22 January 2010. It is also when there will be sun eclipse. Predicted that it is going to be really bad and countries like Malaysia (Sabah & Sarawak), Singapore, Maldives, Australia, Mauritius, Sri Lanka, India, Indonesia, Philippines are going to be badly hit. Please try and stay away from the beaches in January. In my country Indonesia it just happen an earthquake at West Java was at 7.0 magnitude earthquake that occurred on September 2, 2009 at 14:55 local time. So, all my friends please be alert for updated news or article on earthquake and tsunami.