日本ではリヒター・スケールでマグニチュード5.0以上の余震が今週5回ありました。しかし科学者たちは、最大規模の余震はまだ先に起こりうると警告しています。の英語

Five tremors in excess of magnitude 5.0 on the Richter scale have shaken Japan just this week, but scientists are warning that the largest expected aftershock has yet to hit.

The Japan Meteorological Agency has revised the magnitude of the eastern Japan quake from 8.8 to 9.0, the largest recorded in world history.

Unfortunately, three days ago a magnitude 8.8 earthquake struck off the Pacific coast of Japan's Tohoku region.

When an earthquake with a seismic intensity of a lower 5 or greater on the seven-point Japanese scale is predicted, a warning is given to the affected areas.

Unlike the earthquake that caused the Indian Ocean tsunami disaster in 2004, this earthquake did not produce any tsunami damage.

In Kashiwazaki and Nagaoka cities, Kariwa Village in Niigata Prefecture, and Iizuna Town in Nagano Prefecture, the earthquake measured an upper 6 on the seven-point Japanese scale.

The other four are the 9.5 Chile earthquake in 1960, the 9.2 Alaska earthquake in 1964, the 9.1 Indonesia Sumatra earthquake in 2004 and the 9.0 Kamchatka earthquake in 1952.

The Agency reviewed observational data submitted by foreign countries and concluded that three huge ruptures occurred off the coast of the Tohoku area in rapid succession.

The strong earthquake that hit the Tohoku area on the morning of June 14 was named the “Iwate-Miyagi Nairiku Earthquake in 2008.”

Three earthquakes of six on the seven point Japanese scale shook several towns, including Nango, Yamoto and Naruse.

If a quake of six to seven on the Japanese scale hits the Tokai region, 185,800 to 231,400 buildings might be totally destroyed directly by the earthquake or by soil liquefaction, says the government's Central Disaster Management Council.

Tokyo Electric Power Company (Tepco) announced on July 17 that a total of 50 malfunctions, including small amounts of radioactive leakage, were found after the earthquake.

A large earthquake in the Indian Ocean in December 2004 generated tsunamis that caused great damage to a wide range of coastal areas.

If the average temperature rises 1.4 to 5.8 degrees in the next 100 years, sea level will rise 10 to 90 centimeters, and seawater will flow over the seawalls in those areas.

For the drill, it was assumed that a wide area from western Shizuoka Prefecture to northern Miyazaki Prefecture was hit by an earthquake measuring 7 on the 7-point Japanese scale.

Iguchi Masato, a professor at Kyoto University's Disaster Prevention Research Institute, said, "More magma is flowing into the volcano's underground magma chamber. It is likely that an eruption of this size will occur in the near future."

This has been the most devastating earthquake in China since the 1976 earthquake that hit Hebei province and killed about 240,000 people.

The Meteorological Agency quickly sent investigators to the affected area and determined that the tornado's path of destruction was 19 kilometers long and 100 to 200 meters wide.

Sand jets out of the ground when liquefaction is caused by an earthquake with a seismic intensity greater than 5 on the 7-point Japanese scale.

Sea surface temperatures have risen 0.5 degrees Celsius over the last 35 years due to global warming, and the Georgia Institute of Technology study suggests this temperature rise has led to the increase in the proportion of intense hurricanes.

A spokesperson for the JCG said, "We want to use the data to study the mechanisms and predict the place and scale of the large earthquake anticipated in the Tokai area."

The Chinese government reported that as of May 19, one week after the earthquake, more than 34,000 people have died, most of them in Sichuan province.

The earthquake measured a lower 6 on the seven-point Japanese scale in Nagano City, Otari and Ogawa Villages, and an upper 5 in Hakuba Village and Shinano Town.

Yoshida Masao, the general manager of the plant, said, "During the first week after the tsunami, I had no idea what was going to happen. Several times I thought we might die."

The tornado and associated lightning caused about 67,000 houses in Saitama and Chiba Prefectures to lose power, according to Tokyo Electric Power Company.

Damage caused by the typhoon was especially severe on Izu Oshima, an island located about 120 kilometers south of Tokyo.

ccording to estimates by the Ministry of Land, Infrastructure and Transport, the rise in sea level caused by global warming could reach 90 centimeters in 100 years.

According to the Food and Agriculture Organization of the United Nations, the five tsunami-hit countries lost many mangrove forests between 1980 and 2000 through deforestation, and their forest area has decreased by 26 percent to 4.2 million hectares.

The season's 16th typhoon caused great damage at the end of last month as it moved across the Kyushu region, the Chugoku region and Hokkaido.

On Nov. 20, the Japan Coast Guard (JCG) announced that a volcanic eruption has formed a new island near Nishinoshima in the Ogasawara Islands.