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Japan's land ministry has found that areas of land below-sea-level in the Sendai plain, Miyagi Prefecture, have increased 5-fold after the March 11th earthquake.
It warns that these areas are highly vulnerable to flooding from high tides and typhoons.
The ministry on Thursday released the findings of its aerial probe using an ultra-sensitive, laser-equipped camera to check subsidence across the Sendai plain.
The areas below sea level, shown in blue on the released map, spanned 16 square kilometers.
Before the quake, the plain had only 3 square kilometers of such low-lying areas.
The map also shows, in green, areas lying at full-tide levels. The amount of such areas has increased to 56 square kilometers from the pre-disaster total of 32 square kilometers.
Colored yellow are areas lying below the highest-ever tide level recorded in 1980. These areas have grown to 111 square kilometers from the pre-quake total of 83 square kilometers.
Many river banks and seawalls were damaged by the disaster. The ministry is calling on residents in these areas to be on the alert, and is sandbagging the broken banks.
Thursday, April 28, 2011 17:54 +0900 (JST)
Originally posted by zorgon
Since the March 11 Quake, the land has been subsiding
Originally posted by Silverlok
Incorrect the measurements have changed thrice.
Originally posted by vox2442
Originally posted by Silverlok
Incorrect the measurements have changed thrice.
Measurements of a past event have changed, as fresh data have been collected and more precise measurements technology can be used.
None of the new data that I'm aware of suggests that the land continues to sink.
Originally posted by Unity_99
reply to post by silent thunder
The 60 trillion yen reported paid out could have evacuated them, donated land and Yurts. Canada is huge with a miniscule population as well.
There is no excuse and the earthquake risk is huge. And the radiation is huge.
Originally posted by TrueAmerican
Keep fingers crossed and maybe the ominous warnings for Tokyo will be mistaken.
Originally posted by zorgon
earthquake.usgs.gov...edit on 5-5-2011 by zorgon because: (no reason given)
Prime Minister Naoto Kan has asked a utility firm in central Japan to halt operations of all active reactors at the Hamaoka nuclear power plant, due to the risk of
earthquakes.
Kan told a hastily arranged news conference on Friday evening that he made the decision in the wake of the accident at the Fukushima Daiichi nuclear plant.
The prime minister said he asked Chubu Electric Power Company that operates the Hamaoka plant to halt reactors No.4 and No.5, and not to restart reactor No.3,
which is now offline for regular inspections.
The plant in Shizuoka Prefecture has 5 reactors, but units No.1 and 2 are permanently shut down for decommissioning.
The Hamaoka complex is known to sit directly above the projected focus of the Tokai Earthquake that experts have long warned of. Kan said that a science ministry panel on earthquake research has projected an 87-percent possibility of a magnitude-8-class earthquake hitting the region within 30 years.
He said that considering the unique location of the Hamaoka plant, the operator must draw up and implement mid-to-long-term plans to ensure the reactors can withstand the projected Tokai Earthquake. Kan also said that until such plans are implemented, all the reactors should remain out of operation.
Chubu Electric has declined to respond immediately to the prime minister's request. But Kan said he will try hard to win the company's understanding.
The prime minister added that his government will do its utmost to ensure the stoppage of the reactors does not seriously affect power supplies in Chubu Electric's service areas.
Kan said that although power shortages might occur when demand surges in the summer, he is confident that with the cooperation and understanding of the public, the nation can overcome such difficulties.
Friday, May 06, 2011 21:02 +0900 (JST)
The Japanese government admitted it kept in secret at least 5000 radiation radiation measurements and assessments after the nuclear event which struck the Fukushima Daiichi NPP in March. This was done in order not to induce panic in the population, a representative of the staff dealing with the nuclear emergency told ITAR-TASS.
The Hamaoka nuclear power plant is located above the projected focus of a magnitude-8-class earthquake that could strike Shizuoka Prefecture.
Seismologists have long been warning that the likely Tokai earthquake could occur any time.
They say massive earthquakes have hit the region every 100 to 150 years, but no major quake has occurred there since the one that struck in the 19th century.
The government predicts that the focus would stretch inland from the southern edge of Yamanashi Prefecture to the central and western parts of Shizuoka Prefecture, and to the prefecture's Pacific coastal area as well.
All areas in Shizuoka would feel a jolt with an intensity of 6-minus to the maximum 7 on the Japanese scale of 0 to 7.
It also projects that a major tsunami of more than 5 meters will strike the coastal area and in some places, the waves could top 10 meters.
Friday, May 06, 2011 21:02 +0900 (JST)