Tag-arkiv: quake

Vulnerable Cities: Megacities and Earthquake Risk

Vulnerable Cities- Megacities and Earthquake Risk - Views of the World 2011-04-17 21-30-37

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The following map is a modified version of the earthquake vulnerability map published on Views of the World last month (see that page for more details on the underlying earthquake map). The map itself does not show much new information, but includes an aditional layer containing the largest cities of the world, the so-called megacities (depending on the definition, these are cities with a population of more than 5, 8 or 10 million).

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Shake-up time for Japanese seismology

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For the past 20 years or so, some seismologists in Japan have warned of the seismic and tsunami hazards to the safety of nuclear power plants, most notably Katsuhiko Ishibashi, now professor emeritus at Kobe University. Their warnings went unheeded. Yet in the immediate aftermath of the magnitude-9.1 earthquake that struck Tohoku on 11 March, pundits could be found on many Japanese TV stations saying that it was “unforeseeable”.

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Guardian: Flawed earthquake predictions gave Fukushima a false sense of security

Japanese put their faith in a system that has consistently failed to predict the risk of major earthquakes, says scientist

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Crowd-sourced realtime radiation monitoring in Japan

pachube crowd radiation japan real time

There are now hundreds of radiation-related feeds from Japan on Pachube, monitoring conditions in realtime and underpinning more than half a dozen incredibly valuable applications built by people around the world. They combine ‘official’ data, ‘unofficial’ official data, and, most importantly to us, realtime networked geiger counter measurements contributed by concerned citizens.

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pachube

15-meter waves hit Fukushima

Tokyo Electric Power Company was reporting on Saturday on its survey of high-water marks left on the plant’s buildings.

It says it found that the tsunami reached up to 15 meters on the ocean side of the reactor and turbine buildings. The figure is far beyond the company’s originally estimated height of 5.7 meters.

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Japan must distribute iodine tablets urgently

PARIS, March 31 (Reuters) – Japanese authorities grappling with a nuclear disaster must hand out iodine tablets now and as widely as possible to avoid a potential leap in thyroid cancers, the head of a group of independent radiation experts said.

France’s CRIIRAD group says Japan has underestimated the sensitivity of the thyroid gland to radioactivity and must lower its 100 millisieverts (mSv) threshold for administering iodine.

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MYANMAR: Earthquake assessments face access hurdles

BANGKOK, 29 March 2011 (IRIN) – Four days after a 7.0 magnitude earthquake struck Myanmar’s eastern Shan State, information about the true scale of the disaster has been slow to emerge given the region’s mountainous terrain, linguistic barriers and security concerns, an aid agency with dozens of volunteer surveyors in affected areas, said.

Unseasonal rains hamper relief efforts in quake-hit eastern Myanmar

BANGKOK (AlertNet) – Unseasonal rains coupled with bad roads and remote locations are hampering relief efforts four days after a strong earthquake hit eastern Myanmar on March 24, aid workers said.

The 6.8 magnitude tremor killed at least 74 people and injured another 125, when it shook the famous “Golden Triangle” region, a sparsely populated, hilly area where Myanmar, Thailand and Laos meet. The United Nations says there have been eight aftershocks and the risk of landslides is high.

Factbox: How much radiation is dangerous?

(Reuters): Here are some facts about radiation and the health dangers it poses-

Below are different levels of massive radiation exposure in a single dose – all measured in millisieverts — and their likely effects on humans, as published by the U.S. Environmental Protection Agency:

– 50-100: changes in blood chemistry

– 500: nausea, within hours

– 700: vomiting

– 750: hair loss, within 2-3 weeks

– 900: diarrhea

– 1,000: hemorrhage

– 4,000: possible death within 2 months, if no treatment

– 10,000: destruction of intestinal lining, internal bleeding and death within 1-2 weeks

– 20,000: damage to the central nervous system and loss of consciousness within minutes, and death within hours or days

Sources: Taiwan Atomic Energy Council, World Nuclear Association, US Department of Transportation, US Environmental Protection Agency

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At least 75 killed in Myanmar quake

myanmar quake march 2011

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YANGON : At least 75 people were killed and hundreds left homeless on Friday after a strong earthquake hit Myanmar, with fears that the death toll could rise significantly.

Buildings were flattened close to the epicentre while terrified residents fled their homes as tremors were felt as far away as Bangkok, Hanoi and parts of China when the magnitude 6.8 quake hit late on Thursday.

Myanmar state television confirmed a toll of 74 dead and 111 injured.

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Guardian Earthquake map

USGS Responds to Deepwater Horizon Oil Spill_1273577340300

Magnitude 6.8 – MYANMAR

People at Risk: Visualising Global Earthquake Intensity

Views of the world

A map, which provides a general representation of the risks of earthquakes on humanity using records from the past 4,000 years, has been produced by a geographer from the University of Sheffield.

The new World Earthquake Intensity Map has been created on an equal-population map and allows us to understand the earthquake intensity in relation to today´s population distribution, giving an idea of where most people are at risk in regards to seismic activity.

It provides a visualisation of all major earthquakes that have been complied in the Global Significant Earthquake Database. The database contains information on destructive earthquakes from 2150 BC to the present day that meet at least one of the following criteria: moderate damage (approximately $1 million or more), 10 or more deaths, magnitude 7.5 or greater, modified Mercalli intensity X or greater, or the earthquake generated a tsunami.

Earthquake Density Map_tn

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Credit:

Benjamin David Hennig

Social and Spatial Inequalities Research Group,Department of Geography,University of Sheffield

Japan turning corner in humanitarian relief

Food aid is flowing, refugees are restoring daily routines, and even mobile banks are appearing in north Japan as the nation rallies around victims of the March 11 double disaster.

Nearly two weeks after an earthquake and tsunami plunged the Asian nation into its worst crisis since World War II, an increasingly thorough and successful humanitarian relief operation is replacing the scenes of suffering and devastation.

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What are aid workers doing after the Japan quake?

LONDON (AlertNet) - Despite the high death toll and shocking devastation caused by last week’s quake and tsunami, aid workers are not pouring into Japan.

By and large Japan, as one of the most developed countries, has the capacity to respond and it has only accepted international support in a few specific areas, such as search-and-rescue teams, medical help and nuclear specialists.

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Animation: Japan earthquake disaster

eq japan marc 2011

16.03.2011 | Potsdam: The earthquake disaster on 11 March 2011 was an event of the century not only for Japan. With a magnitude of Mw = 8.9, it was one of the strongest earthquakes ever recorded worldwide. Particularly interesting is that here, two days before, a strong foreshock with a magnitude Mw = 7.2 took place almost exactly at the breaking point of the tsunami-earthquake. The geophysicist Joachim Saul from the GFZ German Research Centre for Geosciences (Helmholtz Association) created an animation which shows the sequence of quakes since March 9.

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