Japan: Earthquake, Tsunami, and Nuclear Reactor Crisis **6 Months Later (page 19)** - Page 7 - AcuraZine - Acura Enthusiast Community



Japan: Earthquake, Tsunami, and Nuclear Reactor Crisis **6 Months Later (page 19)**

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Old 03-12-2011, 02:46 PM   #241
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Dang... seeing pictures really brings this tragedy home. Just imagine if your entire town/city was non-existent after something like this
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Old 03-12-2011, 03:18 PM   #242
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Just goes to show with all our advances in technology, we are still insects compared to the power of mother nature.
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Old 03-12-2011, 04:23 PM   #243
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Originally Posted by thelastaspec View Post
Yeaaaaa!!!!!!!! RIGHT TO WHERE I LIVE!!!!!!!!


I pray the damn thing starts to cool down.
Damn. Sorry dude I wasn't thinking of any of that when I posted. Just meant that hopefully it doesn't get blown inland and cause more devastation. If it makes you feel any better, that fallout pattern on the previous page is complete bullshit. I've seen fallout maps before and none were anything like that including chernobyl.
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Old 03-12-2011, 04:29 PM   #244
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Man, that is just ALL KINDS of trouble...

Core, seawater, rods, containment. I am worried.
Why is seawater bad?

<------clueless about this stuff.
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Old 03-12-2011, 05:09 PM   #245
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This is getting worse and worse...

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A meltdown may be under way at one of Fukushima Daiichi's nuclear power reactors, an official with Japan's nuclear and industrial safety agency told CNN Sunday.

A meltdown is a catastrophic failure of the reactor core, with a potential for widespread radiation release. However, Toshiro Bannai, director of the agency's international affairs office, expressed confidence that efforts to control the crisis would prove successful.

Meanwhile, a second reactor at the same facility failed shortly after 5 a.m. Sunday, the Tokyo Electric Power Company said, according to TV Asahi. The power company said it was having difficulty cooling the reactor and may need to release radioactive steam in order to relieve pressure.
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Old 03-12-2011, 05:17 PM   #246
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This is getting worse and worse...

Catastrophic if true, this could be worse than Chernobyl...hope everyone is monitoring the situation, a nuclear meltdown could send a literal "death cloud" hurtling towards California.
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Old 03-12-2011, 05:19 PM   #247
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292 quakes recorded in the area in the past week (yesterday the count was ~140). Most (obviously) within the past couple days.

Within the last hour (Red boxes) another 6+ aftershock.



http://earthquake.usgs.gov/earthquak.../10/140_40.php

Last edited by Bearcat94; 03-12-2011 at 05:23 PM.
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Old 03-12-2011, 05:24 PM   #248
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Yea heard one of the aftershocks was 7.1
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Old 03-12-2011, 05:27 PM   #249
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damn...
http://www.msnbc.msn.com/id/42044156...s-asiapacific/
Quote:
The core of a nuclear reactor damaged by Friday’s massive earthquake has partially melted, Japan’s nuclear safety agency said Saturday, and the company that runs the plant is pouring seawater into the reactor in an attempt to cool it and prevent it from going critical.
I hope the people working hard to save this thing don't end up having health problems because of it.
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Old 03-12-2011, 05:48 PM   #250
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I hope the people working hard to save this thing don't end up having health problems because of it.
There were reports radiation level in the main control room was 1000x more than normal.
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Old 03-12-2011, 05:53 PM   #251
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Catastrophic if true, this could be worse than Chernobyl...hope everyone is monitoring the situation, a nuclear meltdown could send a literal "death cloud" hurtling towards California.
If this stuff gets in the upper atmosphere, its going affect a lot more than California. It can affect the entire North America. There isn't a wall in California to block it from spreading everywhere else.
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Old 03-12-2011, 06:12 PM   #252
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Look at the bright side: If the radiation is severe enough and makes it across the ocean and into Arizona, maybe it'll kill all the spiders in your area.



See. Silver lining.




Actually they make them bigger. Much bigger. they made a documentary about a tarantula that got exposed to radiation and grew to 100ft!





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Old 03-12-2011, 06:15 PM   #253
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I just ordered a 90ct bottle of pottasium Iodate just in case. I live near a nuclear reactor so even if nothing happens, it's good to have anyhow.
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Old 03-12-2011, 06:17 PM   #254
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A 100 foot spider!?!?!?!

I don't think Stogie would like that. Not at all.

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Old 03-12-2011, 06:29 PM   #255
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Why is seawater bad?

<------clueless about this stuff.
Not sure what is worried about. Many nookular plants use salt water to cool. Here's some info that is for the most part over my head but it's clear that many plants use salt water to cool.

http://www.world-nuclear.org/info/co...ts_inf121.html

Now that you're finished with that

I have no idea what the ramifications of using salt water to cool a nuclear plant designed to be cooled in a different way are so maybe has some special super cop type info. You can either or wait for "I run from spiders man" to come back and answer.
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Old 03-12-2011, 06:33 PM   #256
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Not sure what is worried about. Many nookular plants use salt water to cool. Here's some info that is for the most part over my head but it's clear that many plants use salt water to cool.

http://www.world-nuclear.org/info/co...ts_inf121.html

Now that you're finished with that

I have no idea what the ramifications of using salt water to cool a nuclear plant designed to be cooled in a different way are so maybe has some special super cop type info. You can either or wait for "I run from spiders man" to come back and answer.
He's worried because the salt water doesn't handle the radiation as well as concentrated hard water does. It takes a lot more salt water to cool/ handle the radiation than hard water.
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Old 03-12-2011, 06:37 PM   #257
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^Exterior of the core, seawater is a normal coolant. It, and all its corrosive behaviors are segregated from the steel and concrete used to contain the reactor core, the fuel rods and the rods used to regulate the fission reaction. The actual rods are generally submerged in heavy water, which is cycled through pipes that exchange temperature energy with adjacent pipes that circulate seawater (overly simplified schematic, the heavy water often does not actually circulate with any movement). They are independent and closed systems, but operate next to each other to transfer heat energy. Additionally, pipes carrying hot water (boiling) are used to spin the turbines that are the whole reasons for the reactor, but again, not corrosive sea water, and not in direct contact with the core area.
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Old 03-12-2011, 06:47 PM   #258
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But , the heavy water is used because it is more efficient for increasing the reaction due to it's abundance of neutrons while regular water slows down the reaction. Wouldn't we want to slow the reaction in this case as we are shutting this thing down?
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Old 03-12-2011, 07:21 PM   #259
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But , the heavy water is used because it is more efficient for increasing the reaction due to it's abundance of neutrons while regular water slows down the reaction. Wouldn't we want to slow the reaction in this case as we are shutting this thing down?
There is no such thing as shutting it down really. My fear is that they will end up sealing it in place, although I would love to find out that they can move the core material to a different vessel. My understanding is they are introducing large quantities of Boron into the reactor vessel to slow the reaction. The slowing effect of sea water is probably ( I am guessing here) nominal with respect to a runaway reaction. For max efficiency in power production sure you want the heavy water.
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Old 03-12-2011, 07:45 PM   #260
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Video of Japans earthquake warning system warning this guy seconds before the quake hit. Plus he records the whole time while the quake is happening.
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Cool article talking about Japans earthquake early warning system.

Quote:
Japan has spent well more than $1 billion on earthquake prediction systems, including a network of more than 1,000 GPS-based sensors scattered around the country — and the payoff came today when Tokyo's residents were given up to a minute's warning that a Big One was on the way. That may not sound like much, but it's enough time for people to switch off their gas lines and get beneath a table or a door frame.
"The system functioned well, because warnings were seen on television across the country," Hirohito Naito, a seismic expert at the Japan Meterological Agency, told AFP.
The agency is in charge of quake preparedness as well as weather forecasting, and researchers have invested decades of effort into Japan's early-warning system. It's considered a model for the rest of the world, and U.S. researchers are adapting it for a system known as the California Integrated Seismic Network.
The system capitalizes on the fact that a seismic event sends out two types of shock waves: primary or P-waves, which move up and down; and secondary or S-waves, which shake from side to side. The P-waves travel faster but are weaker, while the S-waves are slower but do more damage. When Japan's system picks up the P-waves, it calculates how far away the source of the shaking is and issues an alarm while the S-waves are still en route. A warning can be broadcast via TV, radio, cell phones and home alarms less than 10 seconds after the P-waves are detected.
The early warning system isn't that useful for those who are close to the epicenter, because the S-waves come quickly behind the P-waves. But because Tokyo is about 230 miles away, that city's residents could have taken action as much as 80 seconds before the serious shaking began. As noted in this Technology Review report, that amount of time can give people a chance to stop a train, lower a crane, pull a car over to the side of the road, stop performing surgery in a hospital or get off an elevator in an office building.

That's assuming that you get the alarm immediately, of course. Some reports from Japan suggested that the alarms provided somewhat less advance warning, in the range of 15 to 30 seconds. This webpage from the Japan Meteorological Agency explains the early-warning system in much more depth.
Tsunami warnings worked
It takes longer to issue a tsunami warning, because that's dependent on an analysis of wave propagation from an undersea seismic source. The Japanese government issued a local warning three minutes after the quake struck. Technology Review estimates that residents in the hardest-hit coastal areas had 15 minutes of warning, and that Tokyo would have had at least 40 minutes to prepare.
Meanwhile, experts at the National Oceanic and Atmospheric Administration's Pacific Tsunami Warning Center (in Hawaii) and West Coast/Alaska Tsunami Warning Center (in Alaska) issued their first alerts nine minutes after the earthquake. They used computer modeling as well as readings from ocean buoys to track the waves as they sped across the Pacific at jetliner speeds. The wave-monitoring system has been beefed up significantly since the 2004 Indian Ocean tsunami, which pointed up gaps in the network.
Tsunami forecasters and emergency officials called for an evacuation of coastal areas in Hawaii, which were hit by walls of water measuring as much as 7 feet high.
"We called this right," Gerard Fryer, a geophysicist for the Pacific Tsunami Warning Center, told The Associated Press. "This evacuation was necessary. There's absolutely no question, this was the right thing to do."
Longer-term predictions
Could today's quake have been predicted days in advance rather than seconds in advance? In retrospect, maybe so: A 7.4-magnitude quake that hit Japan on Wednesday is now thought to be a foreshock heralding the bigger quake to come.
Two years ago, researchers looked at the records from Japan's crustal movement sensors and determined that large quakes could be anticipated by analyzing the "pre-signals" in the seismic data.
Then again, it's always easier to predict an event in retrospect. Five years ago, The Washington Post's Joel Achenbach wrote that Japanese geologists were sure the next Big One would take place southwest of Tokyo. Today's quake certainly qualifies as that Big One ... but it happened to the northeast, not the southwest.
http://cosmiclog.msnbc.msn.com/_news...n-works-or-not
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Old 03-12-2011, 07:49 PM   #261
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Japan is now 8 feet closer to North America than it was prior to the quake. The Earth's axis also shifted 4 inches.

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Old 03-12-2011, 07:52 PM   #262
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Also the day is 1.6 microseconds shorter! I expect some pay cuts soon.
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Old 03-12-2011, 07:58 PM   #263
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Japan is now 8 feet closer to North America than it was prior to the quake.
Reduced airline tickets.
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Old 03-12-2011, 08:14 PM   #264
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Old 03-12-2011, 08:21 PM   #265
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Bill Nye the science is on CNN i thought he was just a character, but he knows his shit.
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Old 03-12-2011, 09:23 PM   #266
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people were worried about radiation and radiation going into the upper atmosphere, but think about it (and im just thinking aloud here) if the bomb was dropped years ago in WWII, with no risk to us, then shouldn't we not worry if there was a huge failure at the plant?

or am i just thinking of a wrong example?
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Old 03-12-2011, 09:28 PM   #267
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IIRC an atomic bomb releases heat and light than radiation.
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Old 03-12-2011, 09:54 PM   #268
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Unhappy Second nuclear meltdown likely under way in Japan, official says

Quote:
Originally Posted by MSNBC
Seawater poured in to cool 1 reactor; venting starts at 2nd; thousands evacuated
NBC, msnbc.com and news services
updated 2 minutes ago
A partial meltdown is likely under way at second quake-stricken nuclear reactor, Japan's top government spokesman said Sunday.

Fuel rods were briefly exposed and radiation levels briefly rose above the legal limit at the nuclear plant where both reactors are located, said Chief Cabinet Secretary Yukio Edano.

His statement came after Japan's largest electric utility started releasing steam Sunday at the second nuclear reactor while trying to stop a meltdown that began a day earlier in another.

Tokyo Electric Co., or TEPCO, was pouring seawater and boric acid into its Fukushima Daiichi power plant Unit 1 reactor, whose core partially melted, when it released steam containing radiactive materials for more than 2 hours at the Unit 3 nuclear reactor container vessel.

Critical core cooling systems failed at both reactors...
http://www.msnbc.msn.com/id/42044156...s-asiapacific/

I hope things get better soon...
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Old 03-12-2011, 11:29 PM   #269
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people were worried about radiation and radiation going into the upper atmosphere, but think about it (and im just thinking aloud here) if the bomb was dropped years ago in WWII, with no risk to us, then shouldn't we not worry if there was a huge failure at the plant?

or am i just thinking of a wrong example?
To the best of my understanding from physics, the bombs dropped left the radiation locally and only occurred in that instant. Analogy Its like i chuck a water balloon, got all that area wet and some water vapor. The reactor is more like a hose spraying a fine mist, it gets everywhere and lasts a long time before it finally shuts off. if i don't have a good shut off valve or tap, its really hard to screw a end cap on it.
Even the shut down reactors continue to stay hot, but decrease slowly.

If the stuff escapes, the winds blow it here to the west coast.
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Old 03-12-2011, 11:32 PM   #270
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If your interested, heres the science behind the reasoning from a reputable source:
Doses from residual radioactivity in both cities are now far below the annual background dose (0.001-0.003 Sv); hence, there are no detectable effects on human health. Radioactivity was over 90% gone by one week after the bombings and was less than the background level by one year.

People often ask, "If uranium and plutonium pose a potential hazard in nuclear waste sites and were present at dangerous levels in the environment following the Chernobyl nuclear accident, why aren't Hiroshima and Nagasaki still uninhabitable?"

There are two ways residual radioactivity is produced from an atomic blast. The first is due to fallout of the fission products or the nuclear material itself--uranium or plutonium (uranium was used for the Hiroshima bomb whereas plutonium was used for the Nagasaki bomb)--that contaminate the ground. Similar ground contamination occurred as a consequence of the Chernobyl accident, but on a much larger scale (click here for more-detailed explanation). The second way residual radioactivity is produced is by neutron irradiation of soil or buildings (neutron activation), causing non-radioactive materials to become radioactive.

Fallout. The Hiroshima and Nagasaki bombs exploded at altitudes of 600 meters and 503 meters, respectively, then formed huge fireballs that rose with the ascending air currents. About 10% of the nuclear material in the bombs underwent fission; the remaining 90% rose in the stratosphere with the fireball.

Subsequently, the material cooled down and some of it started to fall with rain (black rain) in the Hiroshima and Nagasaki areas, but probably most of the remaining uranium or plutonium was dispersed widely in the atmosphere. Because of the wind, the rain did not fall directly on the hypocenters but rather in the northwest region (Koi, Takasu area) of Hiroshima and the eastern region (Nishiyama area) of Nagasaki.

The maximum estimates of dose due to fallout are 0.01-0.03 Gy in Hiroshima and 0.2-0.4 Gy in Nagasaki. The corresponding doses at the hypocenters are believed to be only about 1/10 of these values.

Nowadays, the radioactivity is so miniscule that it is difficult to distinguish from trace amounts (including plutonium) of radioactivity caused by worldwide fallout from atmospheric (as opposed to underground) atomic-bomb tests that were conducted around the world in past decades, particularly in the 1950s and 1960s.

Neutron activation. Neutrons comprised 10% or less of the A-bomb radiation, whereas gamma rays comprised the majority of A-bomb radiation. Neutrons cause ordinary, non-radioactive materials to become radioactive, but gamma rays do not. The bombs were detonated far above ground, so neutron induction of radioactivity on the ground did not produce the degree of contamination people associate with nuclear test sites (Nevada test site in Southwest U.S., Maralinga test site in South Australia, Bikini and Mururoa Atolls, etc.).

Past investigations suggested that the maximum cumulative dose at the hypocenter from immediately after the bombing until today is 0.8 Gy in Hiroshima and 0.3-0.4 Gy in Nagasaki. When the distance is 0.5 km or 1.0 km from the hypocenter, the estimates are about 1/10 and 1/100 of the value at the hypocenter, respectively. The induced radioactivity decayed very quickly with time. In fact, nearly 80% of the above-mentioned doses were released within a day, about 10% between days 2 and 5, and the remaining 10% from day 6 afterward. Considering the extensive fires near the hypocenters that prevented people from entering until the following day, it seems unlikely that any person received over 20% of the above-mentioned dose, i.e., 0.16 Gy in Hiroshima and 0.06-0.08 Gy in Nagasaki.

As for Hiroshima and Nagasaki proper, the longest-lasting induced radionuclide that occurred in amounts sufficient to cause concern was cesium-134 (with a half-life of about 2 years). Most of the induced radioactivities from various radionuclides decayed very quickly so that it now takes considerable time and effort to measure it using highly sensitive equipment. Despite such miniscule levels, measurements of residual radioactivity using recently developed ultra-sensitive techniques have been utilized to estimate neutron doses released from the bombs and have formed part of the basis of the latest atomic-bomb dosimetry
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Old 03-12-2011, 11:34 PM   #271
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may god bless japan and this world
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Old 03-12-2011, 11:39 PM   #272
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It just gets worse and worse I hope the issues with the nuclear plants don't cause any fatalities.
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Old 03-13-2011, 12:08 AM   #273
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.... I hope the issues with the nuclear plants don't cause any fatalities.
They already have. 4 workers were killed when the containment building exploded.
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Old 03-13-2011, 12:33 AM   #274
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I can't watch anymore video footages... It's just heartwrenching
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Old 03-13-2011, 12:35 AM   #275
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everytime i see this thread gets me sad GOD BLESS everyone over there in Japan
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Old 03-13-2011, 12:36 AM   #276
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I can't watch anymore video footages... It's just heartwrenching
+1
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Old 03-13-2011, 12:50 AM   #277
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everytime i see this thread gets me sad GOD BLESS everyone over there in Japan
God...? There is no God.
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Old 03-13-2011, 12:51 AM   #278
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Sorry to take that religious turn...but, no God would want a nation and all those people to suffer like this.
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Old 03-13-2011, 12:54 AM   #279
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Originally Posted by Yumcha View Post
Sorry to take that religious turn...but, no God would want a nation and all those people to suffer like this.
x2

I cant help but get annoyed by anyone saying "pray for Japan" or "god bless"
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Old 03-13-2011, 03:06 AM   #280
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Watching the videos about these disasters the past couple of days and I knew it was HIM!

http://en.wikipedia.org/w/index.php?...ldid=418259527

The 2011 Sendai, Japan earthquake was an 8.8[1] magnitude earthquake. It was located off the east coast of Tohoku, Japan on Friday, March 11, 2011 at 05:46:23 UTC at a depth of 24.4 km (15.2 miles). Originally a 7.9, it was upgraded to an 8.8 quake about half an hour later.

The earthquake occurred on 30 km (80 miles) E of Sendai, Honshu, Japan. The earthquake presented a possibility of triggering tsunami in the area. The quake rattled buildings and toppled cars off bridges and into waters underneath. In Tokyo, crowds huddled together and tried to reach relatives via cell phone. Its epicenter was 373 kilometers (231 miles) from Tokyo, the United States Geological Survey said. It triggered a tsunami warning for various countries, including Japan and Russia, the National Weather Service said. Sources say the primary cause of the earthquake was Godzilla.
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