In the past two week, the world had experienced two big earthquakes: Japan and E
ID: 233614 • Letter: I
Question
In the past two week, the world had experienced two big earthquakes: Japan and Ecuador. Please share your ideas on those natural disasters. Please write a paragraph or two comparing these earthquakes, with a special emphasis on the following points:
1.location and time of occurrence
2. the earthquake magnitude, including the aftershocks
3. the depth of the epicenters
4. the casualty in people's lives, injuries, and property damages in each country
5. the scientific reason why the earthquake hit those areas.
Explanation / Answer
Q NO 1. The japan Earthquake location was southwestern Japan's Kyushu island late Thursday, the Kumamoto Prefecture disaster management office said. The 2016 Ecuador earthquake occurred on April 16 at 18:58:37 ECT with a moment magnitude.
Q NO 2. The magnitude-6.2 quake struck near Ueki, the U.S. Geological Survey said. Dozens of smaller aftershocks. Earthquakes of magnitudes exceeding 7.0 struck Japan and Ecuador just hours apart on Saturday. Are the two somehow related
Q NO 3. The shallow depth of the quake -- just 10 kilometers (6.2 miles) -- is significant.
"When you have a shallow earthquake, such as this one is, you have the potential for more damage because the shaking is close to the surface," John Bellini of the U.S. Geological Survey said.
Q NO 4. At least 14 people killed and nine people injured when an earthquake shook southwestern Japan's Kyushu island late Thursday, the Kumamoto Prefecture disaster management office said.
in Mashiki, the Kumamoto Prefecture office said. One person died in a collapsed house, and the other died in a fire caused by the quake. Journalist Mike Fern told CNN that scores of buildings had either collapsed or caught fire, while the tremors triggered landslides, tore up roads and in one case, derailed a bullet train.
Nearly 800 people were injured, 50 severely. The prefecture office said 44,449 people had evacuated.
Prime Minister Shinzo Abe told parliament early Friday that he'd mobilized 3,000 members of Japan's Self Defense Force, police and fire service to join the rescue effort overnight. He said the government is "racing against the clock and will provide more personnel if necessary.
Q NO 5.
A magnitude-7.0 earthquake struck southern Japan today, less than two days after a 6.2-magnitude temblor rocked the same region, triggering tsunami advisories in the area.
The most recent earthquake struck the Kumamoto region on Japan's Kyushu Island early Saturday (April 16) at 1:25 a.m. local time (12:25 p.m. ET on April 15), according to the U.S. Geological Survey (USGS). The smaller 6.2-magnitude quake on Thursday (April 14) killed nine people and injured hundreds more, reported CBS News.
With residents of the Kumamoto region reeling from two sizable earthquakes in as many days, and with memories of the massive 9.0-magnitude earthquake and tsunami that devastated Tohoku, Japan, in 2011 not far from people's minds, what is it about this part of the world that makes it so seismically active
For starters, Japan is located along the so-called Pacific Ring of Fire, which is the most active earthquake belt in the world. This "ring" is actually an imaginary horseshoe-shaped zone that follows the rim of the Pacific Ocean, where many of the world's earthquakes and volcanic eruptions occur.
Within the Ring of Fire, several tectonic plates — including the Pacific Plate beneath the Pacific Ocean and the Philippine Sea Plate — mash and collide.
"The Earth's surface is broken up into about a dozen or so major chunks that are all moving around. Where they all interact at their edges, interesting things happen," said Douglas Given, a geophysicist with the USGS in Pasadena, California.
Today's earthquake seems to have been caused by the Philippines Sea Plate diving underneath the Eurasia Plate, according to Paul Caruso, a geophysicist with the USGS.
While Japan is no stranger to earthquakes, the 7.0-magnitude temblor is one of the largest ever recorded in this part of southern Japan, Caruso told Live Science.
"The second-largest was probably on March 20, 1939 — there was a magnitude-6.7 in this area. And we've had magnitude-6.5 and magnitude-6.3 earthquakes, but this is the largest quake that has been measured in that vicinity," he said.
A tsunami advisory was issued after today's earthquake, but it was subsequently lifted by the Japan Meteorological Agency, and there are currently no major tsunami warnings or advisories in effect.
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