Great Japan quake generates 8-foot tsunami in California

By: Dr. Jeff Masters , 23:00 GMT le 11 Mars 2011

Share this Blog
7
+

A great earthquake rocked the coast of Japan at 5:46 GMT on March 11, generating a dangerous tsunami that raced across the Pacific. The mighty earthquake was rated 8.9 on the Richter scale, making it the 7th most powerful tremor in world history. The world's 8th largest earthquake, a magnitude 8.8 event, hit Chile on February 27, 2010; never before have two top-ten earthquakes hit so close together in time. Today's quake was the strongest in Japanese history, and will likely be the most expensive natural disaster in world history, surpassing the $133+ billion dollar price tag from Hurricane Katrina.


Figure 1. Model-computed energy from the March 11, 2011 tsunami as visualized by the NOAA Visualization Lab.

In the U.S., the highest tsunami waves from the earthquake hit northern California and southern Oregon, with a wave height of 8.1 feet observed at Crescent City, CA, 8.6 feet at Port San Luis, CA, 8.7 feet at Arena Cove, CA, and 6.1 feet at Port Orford, OR. The tsunami swept four photographers out to sea in the Crescent City harbor, injuring three of them and leaving one missing. Extensive damage was done to the harbor and 35 boats. Up to $2 million in damage also occurred in the Santa Cruz harbor south of San Francisco.


Figure 2. Tide gauge at Crescent City, CA during the March 11, 2011 tsunami. The green line shows the height of the tsunami wave; the red line shows the observed water level. The highest tsunami wave came at at 17 UTC (9am PST), an hour and 10 minutes after the initial wave, and was 7 feet high. Image credit: NOAA.

Crescent City was hit by a devastating tsunami after the March 28, 1964 magnitude 8.8 earthquake in Alaska, which killed ten people in the city and destroyed much of the business district. The city is fortunate today that the tsunami hit at low tide, or else water levels would have been five feet higher in the city during the wave. The tide gauge at Crescent City, CA (Figure 2) shows that at least 18 separate tsunami waves have hit the harbor as of 2:45pm PST. The first wave came at about 15:50 UTC (7:50am PST), was about 2.5 feet high, and was not preceded by the ocean falling and water being sucked out to sea. After this initial wave, the ocean level dropped rapidly by 8 feet, and then a series of large waves began rushing in and out, with up to a 13 foot difference between low water and high water. The rapid speed of the in-rushing and outflowing waves were what did the damage to the harbor and its boats. The largest wave came at 17 UTC (9am PST), an hour and 10 minutes after the initial wave, and was 8.1 feet high. Fortunately, this wave came near the time of low tide, and the wave was only 2 feet above last night's high tide mark. Tidal range between low and high tide is about 5 feet at Crescent City. The tide is now rising, and new tsunami waves with height of 3 - 4 feet are still rushing in and out, with the one just before 21 UTC (1pm PST) reaching a height about 2 feet above high tide.


Figure 3. Propagation of the March 11, 2011 Honshu tsunami was computed with the NOAA forecast method using the MOST model with the tsunami source inferred from DART® data. From the NOAA Center for Tsunami Research, located at NOAA PMEL in Seattle, WA.

Portlight.org is mobilizing to provide financial assistance to people with disabilities affected by the disaster, and there will undoubtedly be a huge relief effort by numerous charities in the wake of the earthquake. Your financial contributions and prayers for those affected will be valuable.

Jeff Masters

Waves (Feather3)
During our tsunami warning that had been downgraded to an advisory, this afternoon. It was getting closer to high tide, but it was strange, watching the surges: one minute, the beach was bare, and within minutes, a surge would build up as wave after wave, low, but surging, would inundate the beaches....more shots to come.
Waves

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

or Join

Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.

Display: 0, 50, 100, 200 Sort: Newest First - Order Posted

Viewing: 1387 - 1337

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33Blog Index

Quoting caneswatch:


Hundreds of aftershocks. Unbelievable.


An earthquake of this size moves A LOT of crustal plate. The after shocks are probably going to continue for a long time, though their frequency should die over time.
Member Since: 31 octobre 2009 Posts: 0 Comments: 1561
I commend the Japanese people for the order, the lack of chaos; people standing in line waiting for groceries....
They had almost no warming, it happened so quickly.
We've seen smaller disasters here in the USA, when there was ample warning prior to a hurricane. We saw looting, the thugs on the streets, even killing... total insanity in the streets, in the shelters.
The Japanese people set an example for the rest of the world in their time of crisis. Something the rest of us could learn from...

God Bless them.
Member Since: Posts: Comments:
0218: Column of smoke escaping from Reactor 3 at the Fukushima 1 nuclear power plant - Japanese TV.

0220: Sea level has dropped five metres off Fukushima, confirming imminent arrival of tsunami - Japanese TV.

Member Since: Posts: Comments:
Complete Update






Member Since: Posts: Comments:
And the beat goes on...

0210: North-eastern coast on the alert for a 3-metre tsunami - Japan's Jiji news agency.
0212: Tsunami feared to reach north-eastern coast "in minutes" - Kyodo.
0214: Evacuation order issued in the city of Hachinohe in the north-east - Kyodo
Member Since: Posts: Comments:
Quoting washingtonian115:
It'll take that city over decades to recover. Now a tsunami warning is in place.They just can't seem to catch a break.


Hundreds of aftershocks. Unbelievable.
Member Since: Posts: Comments:
Quoting KEEPEROFTHEGATE:
yeah iam afraid there still could be a significant large aftershock to come may be several months before the risks may past and not to freak anyone out but there has been no other significant activity anywhere on the globle since fridays big one in japan its like everything has shut down except that area strange
It'll take that city over decades to recover.
Quoting PcolaDan:


Continuously

MAP 5.8 2011/03/14 01:02:40 36.455 140.965 18.8 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.6 2011/03/14 00:40:18 37.915 144.504 25.0 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 5.0 2011/03/14 00:22:50 36.960 141.761 25.1 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.8 2011/03/14 00:13:34 40.269 144.518 25.0 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/14 00:07:52 37.161 143.762 25.0 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/13 23:53:50 35.725 141.147 25.4 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.7 2011/03/13 23:41:28 36.824 140.700 25.5 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/13 23:16:34 37.060 143.425 25.1 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.8 2011/03/13 22:45:30 38.654 144.670 28.6 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 5.3 2011/03/13 22:20:18 36.056 141.767 18.0 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 5.1 2011/03/13 22:04:41 37.032 144.731 25.5 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/13 20:35:17 38.294 143.740 25.2 OFF THE EAST COAST OF HONSHU, JAPAN
Now a tsunami warning is in place.They just can't seem to catch a break.
Member Since: Posts: Comments:
1380. Ossqss
The rate of (5.0) quakes seems to be slowing, finally! I have never viewed a history of quake size and frequency like what we have seen in the same spot. Wow!

We will learn much from this, for sure.

http://earthquake.usgs.gov/earthquakes/recenteqsw w/Quakes/quakes_big.php

This is all over 2.5 the above is 5.o or more.

http://earthquake.usgs.gov/earthquakes/recenteqsw w/Quakes/quakes_all.php
Member Since: 12 juin 2005 Posts: 6 Comments: 8186
Quoting washingtonian115:
Now what does that mean?.Strong aftershocks going on?.


Continuously

MAP 5.8 2011/03/14 01:02:40 36.455 140.965 18.8 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.6 2011/03/14 00:40:18 37.915 144.504 25.0 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 5.0 2011/03/14 00:22:50 36.960 141.761 25.1 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.8 2011/03/14 00:13:34 40.269 144.518 25.0 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/14 00:07:52 37.161 143.762 25.0 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/13 23:53:50 35.725 141.147 25.4 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.7 2011/03/13 23:41:28 36.824 140.700 25.5 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/13 23:16:34 37.060 143.425 25.1 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.8 2011/03/13 22:45:30 38.654 144.670 28.6 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 5.3 2011/03/13 22:20:18 36.056 141.767 18.0 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 5.1 2011/03/13 22:04:41 37.032 144.731 25.5 OFF THE EAST COAST OF HONSHU, JAPAN
MAP 4.9 2011/03/13 20:35:17 38.294 143.740 25.2 OFF THE EAST COAST OF HONSHU, JAPAN
Member Since: Posts: Comments:
1378. KEEPEROFTHEGATE (Mod)
Quoting washingtonian115:
Now what does that mean?.Strong aftershocks going on?.
yeah iam afraid there still could be a significant large aftershock to come may be several months before the risks may past and not to freak anyone out but there has been no other significant activity anywhere on the globle since fridays big one in japan its like everything has shut down except that area strange
Member Since: Posts: Comments:
1377. beell
Quoting Skyepony:
A mud volcano erupted in Gobustan region of Azerbaijan on March 13. Witnesses heard explosion before the eruption, mud breccia erupted and then fire blazed up in the territory of Shikhzayirli mud volcano, reported the website of the Ministry of Emergency Situations. The fire had an altitude above 50 m. Experts and rescuers of the Ministry of Emergency Situations immediately arrived at the site to prevent any emergency situation. The fire altitude in the Shikhzayirli mud volcano lowered currently and 1-2 m fire is seen in two centers. Its activation decreased and mud flow is seen in some bald peaks. Deep grikes were created around the crater. The mud volcano is not threatening the nearby villages. Experts continue researching.



That's a new one for me, Skye.
Learn something every day, thanks.

grike
A vertical fissure developed along a joint in limestone by dissolution of some of the rock. Also spelled gryke.
"He climbed over the sedge and eely oarweeds and sat on a stool of rock, resting his ashplant in a grike". — James Joyce, Ulysses

It also appears to be a good place to rest your ashplant.
Member Since: Posts: Comments:
Quoting KEEPEROFTHEGATE:
Now what does that mean?.Strong aftershocks going on?.
Member Since: Posts: Comments:
1375. Patrap
U.S. Marines load palettes of food, water and medical supplies into a KC-130J Super Hercules aircraft on flight line, Marine Corps Air Station Futenma, Okinawa, March 12, 2011, to provide assistance in the wake of the earthquake and tsunami that struck Japan, March 11. U.S. Marine Corps photo by Lance Cpl. Dengrier Baez

Member Since: 3 juillet 2005 Posts: 426 Comments: 129093
1374. KEEPEROFTHEGATE (Mod)
Member Since: Posts: Comments:
1373. Skyepony (Mod)
A mud volcano erupted in Gobustan region of Azerbaijan on March 13. Witnesses heard explosion before the eruption, mud breccia erupted and then fire blazed up in the territory of Shikhzayirli mud volcano, reported the website of the Ministry of Emergency Situations. The fire had an altitude above 50 m. Experts and rescuers of the Ministry of Emergency Situations immediately arrived at the site to prevent any emergency situation. The fire altitude in the Shikhzayirli mud volcano lowered currently and 1-2 m fire is seen in two centers. Its activation decreased and mud flow is seen in some bald peaks. Deep grikes were created around the crater. The mud volcano is not threatening the nearby villages. Experts continue researching.
Member Since: Posts: Comments:
#
0110: Strong tremor felt in Tokyo - AFP.
#
0112: The new tremor was magnitude 6.2, according to Japanese monitors.
#
0114: The latest after-shock would probably have been felt by many people in their homes as the government advised people not to go to school or work today due to transport disruption and power cuts.
Member Since: Posts: Comments:
1371. Patrap
U.S. Air Force airmen load a pallet onto a U.S. Air Force C-17A Globe Master III, March Air Reserve Base, Calif., March 12, 2011. The supplies are in route to Japan for earthquake relief efforts. U.S. Air Force photo by Staff Sgt. Matthew Smith


Member Since: 3 juillet 2005 Posts: 426 Comments: 129093

The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter acquired this color image on March 9, 2011, of "Santa Maria" crater, showing NASA's Mars Exploration Rover Opportunity perched on the southeast rim. (Credit: NASA/JPL-Caltech/Univ. of Arizona)

Color View from Orbit Shows Mars Rover Beside Crater

ScienceDaily (Mar. 13, 2011) - NASA's Mars Exploration Rover Opportunity has nearly completed its three-month examination of a crater informally named "Santa Maria," but before the rover resumes its overland trek, an orbiting camera has provided a color image of Opportunity beside Santa Maria.

The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter acquired the image on March 1, while Opportunity was extending its robotic arm to take close-up photos of a rock called "Ruiz Garcia." From orbit, the tracks Opportunity made as it approached the crater from the west are clearly visible. Santa Maria crater is about 90 meters (295 feet) in diameter....

Link

Link
Member Since: 2 août 2010 Posts: 21 Comments: 9874

Quoting hydrus:
Pinatubo erupted while a tropical cyclone came ashore in the Philippines...What a mess that was...
If I'm not mistaken, I believe many scientists hypothesize that there is a distinct positive correlation between tropical cyclone landfalls and increased seismic activity in the affected areas.
Member Since: Posts: Comments:
1368. Patrap


Homer Hawkins a civilian contractor with Satellite Services Industries marshals in a U.S. Air Force C-17A Globe Master III from Joint Base Lewis-McChord, Wash., March 12, 2011, at March Air Reserve Base, Calif., in preparation to load supplies in route to Japan for earthquake relief. U.S. Air Force photo by Staff Sgt. Matthew Smith
Member Since: 3 juillet 2005 Posts: 426 Comments: 129093
1367. KEEPEROFTHEGATE (Mod)
Quoting aquak9:
shen- al jazeera can be surprisingly honest at times

thank ya'll for a little bit of comfort. actually ya'll have been a lotta comfort this weekend.

Keeper- looks like me and you's gonna be on this roller coaster together
next hurdle is the markets they open for the first time since friday in the morning lets hope they can keep things from spinning out of control this week its damage and cost control week ya just don't take out the 3rd super economics of the world and not expect a reaction
Member Since: Posts: Comments:
1366. Patrap
U.S. sailors assigned to the U.S. 7th Fleet command ship USS Blue Ridge load humanitarian assistance supplies in Singapore, March 11, 2011, to ensure the ship and crew are ready if directed to support earthquake and tsunami relief operations in Japan. U.S. Navy photo by Petty Officer 1st Class Josh Huebne

Member Since: 3 juillet 2005 Posts: 426 Comments: 129093
Quoting presslord:
Who's in charge here?!?!


Member Since: Posts: Comments:
1363. Patrap
03/13/2011
U.S. RELIEF SUPPLIES

Japanese aid workers accept humanitarian relief supplies from U.S. Navy Petty Officer 2nd Class Brian Fox, in Takihana, Japan, Mar. 13, 2011. Fox is a naval air crewman from the "Black Knights" of Helicopter Anti-Submarine Squadron 4 embarked aboard USS Ronald Reagan. The U.S. aircraft carrier is off the coast of Japan to provide disaster relief and humanitarian assistance following an earthquake and tsunami. U.S. Navy photo by Petty Officer 3rd Class Dylan McCord



Member Since: 3 juillet 2005 Posts: 426 Comments: 129093
Quoting TampaSpin:
extreme super moon on March 19th.......Very high and very strong tides are for sure expected......WHAT ELSE might we expect?


A really bright sky that night.
Member Since: Posts: Comments:
1360. hydrus
Quoting KoritheMan:

That's actually not as uncommon as you might think.
Pinatubo erupted while a tropical cyclone came ashore in the Philippines...What a mess that was...
Member Since: Posts: Comments:
1359. KEEPEROFTHEGATE (Mod)
Quoting presslord:
Who's in charge here?!?!
you are
Member Since: Posts: Comments:
1358. aquak9
shen- al jazeera can be surprisingly honest at times

thank ya'll for a little bit of comfort. actually ya'll have been a lotta comfort this weekend.

Keeper- looks like me and you's gonna be on this roller coaster together
Member Since: Posts: Comments:
Quoting presslord:
Who's in charge here?!?!


Hey Moe, Larry, or, Curly! Dang i forgot your name! LOL.........hey bro
Member Since: 2 septembre 2007 Posts: 179 Comments: 20448
1356. hydrus
Quoting bappit:

Hmmmmm, I heard that there were only about 10**80 protons in the universe.
What if there are 10**80 universes?...;0
Member Since: Posts: Comments:
1355. KEEPEROFTHEGATE (Mod)
Quoting aquak9:
so....I hate to ask, but...

are we all good? there was no meltdown? are things stable?

i guess I need a decent status update so I don't do like ShenFish and stay up all night watching AlJazeeera
as good as we can be no meltdown that is known of stable for now they did good real good saved lots this time lost those reactors never be used again
Member Since: Posts: Comments:
1247 truecajun "...how many minutes after the quake did the tsunami hit the coast? Did these people have even 10 minutes to drive/run etc?"
1252 JohnTucker "I think the first one was 30 min - I could be wrong though. So by the time the quake stopped and the authorities were able to issue warnings was around 15 min minimum, at BEST. I don't think that is a really reasonable estimate though so like about 20-25 min, also utilities would be disrupted near the quake."

In the first place, Japan now has an automated EarthquakeWarningSystem.

S-waves (which carry the quake) travel at ~60% of the velocity of the P-waves (which are produced at the same time as the S-waves). In the crust (through which both the P-Wave and the S-Wave travelled considering the relatively short distance from the epicenter to the coast):
P-waves have a velocity of ~5kilometres per second,
and S-waves have a velocity of ~3kilometres per second.
Tsunami's travel over open ocean at ~0.25kilometres per second.

Minamisanriku (10,000 people missing) is ~90kilometres from the epicenter;
the P-wave would have been detected in a maximum^ of ~18seconds;
the S-wave (quake) would have arrived in ~30seconds.
ie The alarm would have first sounded ~12seconds before the arrival of the quake.
The tsunami would have arrived in ~360seconds, ~6minutes after the epicenter fault broke;
~342seconds, 5minutes42seconds after the EWS alarms went off;
~330seconds, 5minutes30seconds after the quake hit.
Kesennuma is about the same

The intense shaking lasted ~4minutes15seconds of the 5minutes of the initial quake.
As anybody who has experienced an intense quake can tell ya, severe motion-induced"vertigo" makes it so ya can barely stand. You ain't gonna drive, and ya ain't gonna walk more than a few yards/metres. Tryin' to run almost guarantees a face-plant into the floor or pavement.

So that leaves about a minute of travel time after the quake stops before the tsunami hits. Good luck with escaping. I doubt that most folks can orient themselves within a minute of such intense shaking.

TEPCO's Fukushima Dai-Ichi nuclear powerplant is ~155kilometres from the epicenter;
the P-wave would have been detected in a maximum^ of ~31seconds;
the S-wave (quake) would have arrived in ~52seconds.
ie The alarm would have first sounded ~21seconds before the arrival of the quake.
Which doesn't sound like much, but the control(chain-reaction dampening)rods coulda been slammed into place before the quake arrived insteada after (probably 5minutes after).
From the reports, sounds like the dampening rods at the #1 and #3 reactors were shoved only halfway down before their insertion ceased. Could easily be misinterpreting the cause of the lack of water covering the fuel rods and their continued heat production... but worth thinking about.

The tsunami would have arrived in ~620seconds, ~10minutes20seconds after the epicenter fault broke;
~589seconds, 9minutes49seconds after the EWS alarms went off...in which the EmergencyCoolingSystem coulda been working.
~528seconds, 8minutes48seconds after the quake hit...

Again I might be WRONG, but nearly an extra 10minutes of dampening&cooling might have kept those reactors outta the total self-destruct(maybe even leading to core-breach fallout)mode that Japan is now facing.

* Which TEPCO, the operator of the Fukushima nuclear powerplants, has deliberately refused to install.....after having successfully lobbied to prevent Japan's Industria&NuclearSafetyAgency from making the use of or even a connection to the EWS mandatory after TEPCO's 2007 earthquake-related foul-upS.
SNAFU is both TEPCO's motto and method of operation, and FUBAR is its mission statement.

^ Could have had closer detectors, then speed of light communication to trigger the alarm at 300,000kilometres per second. More than one detector is needed to triangulate the position of the epicenter.
- - - - - - - - - - - - - - - - - - - - - - - - - -
flood http://flood.firetree.net/?ll=38.3632,141.3377&z=7 &m=0&t=3
GreatCircle http://www.gcmap.com/mapui?P=38.2n140.98e-38.322n1 42.369e, 38.677778n141.446389e-38.322n142.369e, 37.421389n141.0325e-38.322n142.369e, 37.319444n141.021111e-38.322n142.369e, 38.883333n141.583333e-38.322n142.369e&SU=kts
Member Since: 21 août 2007 Posts: 0 Comments: 4860
Quoting nrtiwlnvragn:


The recent update from this site was encouraging.

Also, seems WUmail was not the only thing affected by the time change:
Users complain iPhone clock bungles time change
Which I just don't have much sympathy for...
I'm not even a true system admin, but I knew to set all of our systems at work to run on UTC time. Users can display something else if they want, but UTC is behind it all. Never had a DST issue.
Member Since: Posts: Comments:
Quoting TampaSpin:
extreme super moon on March 19th.......Very high and very strong tides are for sure expected......WHAT ELSE might we expect?


The next 648 days are going to be something.
Member Since: Posts: Comments:
Before and after pics of various cities, from the NYT:

NYT

and an interactive map of the damage:

NYT
Member Since: 15 juillet 2005 Posts: 3 Comments: 1269
Who's in charge here?!?!
Member Since: Posts: Comments:
extreme super moon on March 19th.......Very high and very strong tides are for sure expected......WHAT ELSE might we expect?
Member Since: 2 septembre 2007 Posts: 179 Comments: 20448
Quoting aquak9:
so....I hate to ask, but...

are we all good? there was no meltdown? are things stable?

i guess I need a decent status update so I don't do like ShenFish and stay up all night watching AlJazeeera


The recent update from this site was encouraging.

Also, seems WUmail was not the only thing affected by the time change:
Users complain iPhone clock bungles time change
Member Since: Posts: Comments:
1347. Patrap



IAEA update on Japan Earthquake

Staff Report



Japan Earthquake Update (13 March 2011 21:45 CET)

The Japanese authorities have informed the IAEA that radioactivity levels at the site boundary of the Onagawa nuclear power plant have returned down to normal background levels. The first (ie lowest) state of emergency was reported at the plant earlier on Sunday after an increased level of radioactivity was detected at the site boundary. Investigations at the site indicate that no emissions of radioactivity have occurred from any of the three units at Onagawa. The current assumption of the Japanese authorities is that the increased level may have been due to a release of radioactive material from the Fukushima Daiichi nuclear power plant.

The IAEA continues to liaise with the Japanese authorities and is monitoring the situation as it evolves.

1335 CET, 13 March 2011

Japanese authorities have informed the IAEA's Incident and Emergency Centre (IEC) that venting of the containment of reactor Unit 3 of the Fukushima Daiichi nuclear power plant started at 9:20 AM local Japan time of 13 March through a controlled release of vapour. The operation is intended to lower pressure inside the reactor containment.

Subsequently, following the failure of the high pressure injection system and other attempts of cooling the plant, injection of water first and sea water afterwards started. The authorities have informed the IAEA that accumulation of hydrogen is possible.

Japanese authorities have also informed the IAEA that the first (i.e., lowest) state of emergency at the Onagawa nuclear power plant has been reported by Tohoku Electric Power Company. The authorities have informed the IAEA that the three reactor units at the Onagawa nuclear power plant are under control.

As defined in Article 10 of Japan's Act on Special Measures Concerning Nuclear Emergency Preparedness, the alert was declared as a consequence of radioactivity readings exceeding allowed levels in the area surrounding the plant. Japanese authorities are investigating the source of radiation. The IAEA has offered its "Good Offices" to Japan to support the nation's response to the 11 March earthquake and tsunami. One IAEA capability intended to help member states during crises is the Response and Assistance Network (RANET). The network consists of nations that can offer specialized assistance after a radiation incident or emergency. Such assistance is coordinated by the IAEA within the framework of the Assistance Convention.

The IAEA continues to liaise with the Japanese authorities and is monitoring the situation as it evolves.
Member Since: 3 juillet 2005 Posts: 426 Comments: 129093
1346. Patrap




Help portlight.org Help Japan


portlight.org


Member Since: 3 juillet 2005 Posts: 426 Comments: 129093
Al Jazeera is running a special on nuclear event in Japan. Know some people don't like the source but they have been doing a good job on this one. Link
Member Since: Posts: Comments:
1344. aquak9
so....I hate to ask, but...

are we all good? there was no meltdown? are things stable?

i guess I need a decent status update so I don't do like ShenFish and stay up all night watching AlJazeeera
Member Since: Posts: Comments:
Quoting aquak9:


luckily I have read stephen hawking's "brief history of the universe" and actually understood most of it...so I can handle grothar's age.


Rumor has it that Grothar was trying to make it to the bathroom in the dark, got frustrated, and said "Let there be light!", and suddenly he got stuck in this big expanding ball of space-time.

Somehow he wound up on Earth, where he is bidding his time until he figures out how to get out of this mess he accidently created.

And he still has to go to the bathroom.

:D
Member Since: 31 octobre 2009 Posts: 0 Comments: 1561
1342. Grothar
Quoting ShenValleyFlyFish:
I had the misfortune of having bout of insomnia that night and was watching Al Jazeera saw some of those videos in real time. Didn't help with insomnia.


I hear ya!
Member Since: 17 juillet 2009 Posts: 71 Comments: 26878
Quoting sunlinepr:
There will never be a safe earthquake proof Nuclear plant.

The uncontrollable earth movements of earthquakes are just what is needed to create critical nuclear rod movement accidents, adding a huge amount of uncontrolled reactivity to the core and what is needed to unalign reactor core rods, making it imposible to return to normality....

Even a big Jumbo Jet, colliding a Nuclear plant, can create enough vibration and uncontrollable nuclear core rod movements to desestabilize a nuclear reactor.

Even now that Japan is 5,478 miles, it's giving us a headache of posible Fallout, imagine what a nightmare it would be if we are attacked by other superpower... Just one missile is what is needed... It can be a unmanned drone...
And the real fact is that we were attacked by a nomad using our own airplanes hitting the Pentagon, The twin towers and they missed the White house... 3 out of 4 or 75% effectiveness


Large-scale (production) nuclear reactors are susceptible to prompt criticality accidents when a large amount of reactivity is added to a core, such as during the movement of control rods. Alternate mechanisms include the loss of negative reactivity, such as when hot, borated coolant water is replaced with cold, pure water in the reactor core.[1] Historically, all such accidents have been caused by control rod movements.


Or they could attack a large coal depot, toxic waste dump, hydroelectric dam, oil refinery and cause just as much destruction.

You're statements about nuclear reactor tech is simply not true. Modern designs for nuclear plants CAN NOT melt down, as they do not have the capability of getting hot enough in the first place. Worst case scenario is the fuel heats up and eventually just runs itself down. Thorium reactors can't even have a sustained nuclear reaction without an external neutron source kicking it into gear. No neutron source, no reaction.

The plants we have today are running with old designs susceptible to a host of issues. This is known, and sadly we are prevented from doing anything about it thanks to the anti-nuke movement.

Using fear and DOOM scare tactics for extremely low probability events is intellectually dishonest. These are the same arguments that have kept us hooked on oil and from developing a sensible energy plan in this country for decades.

For the power output, nuclear energy is the safest, cleanest energy source we have. There are currently 442 plants operating worldwide with a combined operation time of over 14,000 years. In the history of nuclear power, there has been ONE level 7 disaster that resulted in significant contamination. There have been far fewer deaths in the entire 55 year history of nuclear power than deaths related to fossil fuel power in a single year.

Going on about how dangerous nuclear power is would be like someone pointing out that your vegetable dip is bad for you while they scarf down a big mac dipped in baconaise, deep fried and doubled buttered with a bucket of lard for dipping.
Member Since: 31 octobre 2009 Posts: 0 Comments: 1561
Quoting Grothar:


My eyes are what they used to be. As a matter of fact nothing is.

You know, there were only 3 or 4 of us on the night of the earthquake when KEEPER posted it. I even questioned if it were that high. I never thought at that time, that it would come to this.
I had the misfortune of having bout of insomnia that night and was watching Al Jazeera saw some of those videos in real time. Didn't help with insomnia.
Member Since: Posts: Comments:
1338. KEEPEROFTHEGATE (Mod)
Quoting Xyrus2000:


Radiation only kills quickly when you're exposed to A LOT of it in a short period of time.

Your exposed to radiation every single day, and a lot more than you might think. Some area of the world have a naturally high radiation level. Do you fly on jets? Your getting bunch more radiation a flight level than your getting at the ground. Do you like bananas? You get radiation there too (bananas are good absorbers of radioactive isotopes). Do you smoke? Each cigarette is the equivalent of a chest x-ray.

We are constantly being bombarded by small amounts of radiation.

So no, in general radiation does not kill quickly. In fact, your more likely to die from the toxicity of the nuclear materials themselves than the radiation.


effects of radiation

Expected health effects assuming the cumulative total radiation exposure was all received within a week.


TOTAL EXPOSURE ONSET & DURATION OF INITIAL SYMPTOMS & DISPOSITION

30 to 70 R From 6-12 hours: none to slight incidence of transient headache and nausea;
vomiting in up to 5 percent of personnel in upper part of dose range. Mild
lymphocyte depression within 24 hours. Full recovery expected.

70 to 150 R From 2-20 hours: transient mild nausea and vomiting in 5 to 30 percent of
personnel. Potential for delayed traumatic and surgical wound healing,
minimal clinical effect. Moderate drop in lymphocycte, platelet, and
granulocyte counts. Increased susceptibility to opportunistic pathogens.
Full recovery expected.

150 to 300 R From 2 hours to three days: transient to moderate nausea and vomiting in
20 to 70 percent; mild to moderate fatigability and weakness in 25 to 60
percent of personnel. At 3 to 5 weeks: medical care required for 10 to 50%.
At high end of range, death may occur to maximum 10%. Anticipated medical
problems include infection, bleeding, and fever. Wounding or burns will
geometrically increase morbidity and mortality.

300 to 530 R From 2 hours to three days: transient to moderate nausea and vomiting in 50
to 90 percent; mild to moderate fatigability in 50 to 90 percent of personnel.
At 2 to 5 weeks: medical care required for 10 to 80%. At low end of range,
less than 10% deaths; at high end, death may occur for more than 50%.
Anticipated medical problems include frequent diarrheal stools, anorexia,
increased fluid loss, ulceration. Increased infection susceptibility during
immunocompromised time-frame. Moderate to severe loss of lymphocytes.
Hair loss after 14 days.

530 to 830 R From 2 hours to two days: moderate to severe nausea and vomiting in 80 to
100 percent of personnel; From 2 hours to six weeks: moderate to severe
fatigability and weakness in 90 to 100 percent of personnel. At 10 days to
5 weeks: medical care required for 50 to 100%. At low end of range, death
may occur for more than 50% at six weeks. At high end, death may occur
for 99% of personnel. Anticipated medical problems include developing
pathogenic and opportunistic infections, bleeding, fever, loss of appetite,
GI ulcerations, bloody diarrhea, severe fluid and electrolyte shifts, capillary
leak, hypotension. Combined with any significant physical trauma, survival
rates will approach zero.

830 R Plus From 30 minutes to 2 days: severe nausea, vomiting, fatigability, weakness,
dizziness, and disorientation; moderate to severe fluid imbalance and headache.
Bone marrow total depletion within days. CNS symptoms are predominant at
higher radiation levels. Few, if any, survivors even with aggressive and
immediate medical attention.



Member Since: Posts: Comments:
1337. bappit
Quoting hydrus:
A Googleplex multiplied by a Googleplex, to the power of a googleplex, is the estimated number of eons that the Grothar is thought to have existed. Some scientists feel that this number is grossly conservative and the Grothars age may actually be another 9 trillion eons older than the original estimate.

Hmmmmm, I heard that there were only about 10**80 protons in the universe.
Member Since: Posts: Comments:

Viewing: 1387 - 1337

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33Blog Index

Top of Page

About

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

Local Weather

Overcast
49 ° F
Couvert