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Perhaps most worrisome, Pohang used a new technique meant to limit earthquake size called “soft stimulation” just a few months before the temblor. Your email address is used
A rare earthquake in South Korea was triggered by the country's first experimental geothermal power plant, a team of government-commissioned experts said Wednesday. Latest important earthquakes; 5: Earthquake Rip: 4,67: Earthquake695 km north-east of Whangarei By using our site, you acknowledge that you have read and understand our “We still do not understand what is happening and what will happen.”Paul Voosen is a staff writer who covers Earth and planetary science. Your opinions are important to us. A rare earthquake in South Korea was triggered by the country's first experimental geothermal power plant, a team of government-commissioned experts said Wednesday. Kim’s study, in particular, “makes a very strong case that the earthquake began within or near the zone that was stimulated,” Ellsworth says.This shouldn’t derail the broader development of enhanced geothermal, Wiemer adds.
Before the geothermal plant’s two wells were drilled, there had never been an earthquake there of any significance, says Kwanghee Kim, a seismologist at Pusan National University in Busan, South Korea, and lead author of one study. But that plant, it now appears, brought something else: a large, damaging earthquake.The magnitude-5.5 Pohang earthquake, the second largest in the country’s modern history, struck the densely populated region on 15 November 2017, injuring 90 people and causing $52 million in damage.
And, according to two studies published today in Perched on South Korea’s southeast coast and far from grinding tectonic plates, Pohang is an unlikely spot for a big earthquake. The Pohang quake is a sign that this needs to change, and that the risks are higher, Kim says.
"We concluded that the Pohang earthquake was a 'triggered quake'. M w 6.7–7.0, Speculated max. It wasn't a natural earthquake. Very rarely is the source of a quake so directly imaged. That prompted his lab to deploy eight temporary seismic sensors at the site, which were finally in place on 10 November 2017. “[This] should be a wake-up call.”If the results hold up, they will be a troubling development for countries such as Switzerland, which plans to use geothermal power to cut fossil fuels.
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“Whenever I receive questions, I find myself in an awkward situation,” Kim says. March 20, 2019 And the Pohang event, whatever its cause, will likely be a boon for the study of earthquake formation, Ellsworth adds. South Korea is hit by the second most powerful earthquake in its history - prompting fears Kim Jong-un has tested another NUKE. "Pohang residents filed a lawsuit against the government after the quake, and following the assessment Seoul expressed its "deep regret".The geothermal plant—which was temporarily suspended during the study—will be "permanently shuttered", the trade, industry and energy ministry said in a statement.It cost around 80 billion won ($71 million) to build and test operations began in 2016.Unlike neighbouring Japan, the Korean peninsula rarely experiences significant quakes but seismic activity is closely monitored as a spike can be the first indication that North Korea has staged a The country's most powerful quake to date was a 5.8-magnitude tremor that struck Gyeongju, also in the southeast, in September 2016. You can be assured our editors closely monitor every feedback sent and will take appropriate actions. “We have a lot to learn from careful analysis and study of this event.”But residents of Pohang are wondering when things will settle down.
The Pohang earthquake, which struck South Korea last November, caused $52 million in damage.There’s a lot to like about geothermal power. That has prompted some scientists to base earthquake risk assessments for geothermal operations largely on how the wells are operated, including the amount or rate of liquid injected. However, unlike the fracking operations, the water from enhanced geothermal power does not stay underground or cause a long-term buildup of pressure.
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Apart from any fair dealing for the purpose of private study or research, no Even in regions devoid of natural hot spots, engineers can harvest energy by injecting high-pressure water deep into Earth, where it’s heated by hot granite crust before being pumped back up to heat homes or generate power. What’s the long-term risk?
Historical earthquakes. We do not guarantee individual replies due to extremely high volume of correspondence. That was the goal in Pohang, South Korea, where a $38 million pilot plant sought to bring the carbon-free power source to the country. The two new studies will play an important role in fashioning that investigation, says William Ellsworth, a geophysicist at Stanford University in Palo Alto, California, who is working on the government study. It crumbled walls, cracked roads, and collapsed old buildings. 779 Gyeongju earthquake : approx. More than 100 people died and many houses collapsed. Earthquakes in South Korea are less frequent than in neighboring countries, such as China and Japan, but several significant earthquakes have occurred in its history. “The Pohang earthquake was larger than any predicted by existing theories,” Kim says. After all, the United States has found ways to tolerate many larger quakes tied to wastewater injection. That study also points out that an earlier 3.1-magnitude earthquake In the past decade, states such as Oklahoma have seen a spike in induced earthquakes, because of the injection of wastewater from hydraulic fracturing and oil and gas production. But while Kim was monitoring the aftermath of an unrelated earthquake in 2016, he began to detect rumbles from Pohang. This document is subject to copyright. Another 4.6-magnitude quake struck during this year’s Winter Olympics.
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