7.0 magnitude quake hits China, 72 killed

Beijing, Apr 20: At least 72 people were killed and hundreds of others injured today when a powerful 7.0-magnitude earthquake rocked southwest China's Sichuan province causing massive destruction.

The quake hit Lushan county of Ya'an city in southwest China's Sichuan Province at 8:02 am local time, according to the China Earthquake Networks Center (CENC). The epicenter of the earthquake was reported to be at a depth of 13 Kms and was monitored at 30.3 degrees north latitude and 103.0 degrees east longitude.

At least 72 people were killed and 600 others injured, China's state-run CCTV reported, while officials said the number of injured people could be over a thousand.

This is the second major quake to hit Sichuan in five years.

Over 90,000 people were killed in the 8-magnitude quake in 2008. The province is located in the quake prone Qinghai-Tibet Plateau. Sichuan is located close to the Tibet.

Pictures on the state run CCTV showed extensive damage to buildings. The quake was strongly felt by residents in Sichuan's capital city of Chengdu, which is about 140 kilometres from Ya'an. The airport in Chengdu was closed as it suffered the damage.

A resident in Chengdu, who was on the 13th floor of a building said he felt the building shaking for about 20 seconds and he saw tiles fall off nearby buildings, state-run Xinhua news agency reported.

People in Leshan city of Sichuan Province, and neighbouring Chongqing Municipality also felt the earthquake.

More than 2,000 soldiers were rushed to the area hit by the 7.0-magnitude quake for rescue and relief work, military sources said. The soldiers were from the Chengdu Military Area Command (MAC).

Meanwhile, two helicopters of the Chengdu MAC took off from Jiajiang county to learn the developments on the ground. The Chengdu MAC has already set up a quake relief and rescue headquarters. It has also set up a medical relief team for the quake-hit region.

People in Leshan city of Sichuan Province, and neighboring Chongqing Municipality also felt the earthquake. The quake was felt in provinces of Guizhou, Gansu, Shaanxi and Yunnan. Several aftershocks rated above 4.0-magnitude also hit the area.

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Powerful solar storm hits earth; will it disrupt communication, power grids?

News Network

May 11,2024

Washington, May 11: The most powerful solar storm in more than two decades struck Earth on Friday, triggering spectacular celestial light shows from Tasmania to Britain -- and threatening possible disruptions to satellites and power grids as it persists into the weekend.

The first of several coronal mass ejections (CMEs) -- expulsions of plasma and magnetic fields from the Sun -- came just after 1600 GMT, according to the National Oceanic and Atmospheric Administration (NOAA)'s Space Weather Prediction Center.

It was later upgraded to an "extreme" geomagnetic storm -- the first since the "Halloween Storms" of October 2003 caused blackouts in Sweden and damaged power infrastructure in South Africa. More CMEs are expected to pummel the planet in the coming days.

Social media lit up with people posting pictures of auroras from northern Europe and Australasia.

"We've just woken the kids to go watch the Northern Lights in the back garden! Clearly visible with the naked eye," Iain Mansfield in Hertford, England, told AFP.

That sense of wonder was shared in Australia's island state of Tasmania.

"Absolutely biblical skies in Tasmania at 4 am this morning. I'm leaving today and knew I could not pass up this opportunity," photographer Sean O' Riordan posted on social media platform X alongside a photo.

Authorities notified satellite operators, airlines, and the power grid to take precautionary steps for potential disruptions caused by changes to Earth's magnetic field.

Elon Musk, whose Starlink satellite internet operator has some 5,000 satellites in low Earth orbit, described the solar storm as the "biggest in a long time."

"Starlink satellites are under a lot of pressure, but holding up so far," Musk posted on his X platform.

Unlike solar flares, which travel at the speed of light and reach Earth in around eight minutes, CMEs travel at a more sedate pace, with officials putting the current average at 800 kilometers (500 miles) per second.

The CMEs emanated from a massive sunspot cluster that is 17 times wider than our planet. The Sun is approaching the peak of an 11-year cycle that brings heightened activity.

'Go outside tonight and look'

Mathew Owens, a professor of space physics at the University of Reading, told AFP that how far the effects would be felt over the planet's northern and southern latitudes would depend on the storm's final strength.

"Go outside tonight and look would be my advice because if you see the aurora, it's quite a spectacular thing," he said. People with eclipse glasses can also look for the sunspot cluster during the day.

In the United States, this could include places such as Northern California and Alabama, officials said.

NOAA's Brent Gordon encouraged the public to try to capture the night sky with phone cameras even if they couldn't see auroras with their naked eyes.

"Just go out your back door and take a picture with the newer cell phones and you'd be amazed at what you see in that picture versus what you see with your eyes."

Spacecraft and pigeons

Fluctuating magnetic fields associated with geomagnetic storms induce currents in long wires, including power lines, which can potentially lead to blackouts. Long pipelines can also become electrified, leading to engineering problems.

Spacecraft are also at risk from high doses of radiation, although the atmosphere prevents this from reaching Earth.

NASA has a dedicated team looking into astronaut safety and can ask astronauts on the International Space Station to move to places within the outpost that are better shielded.

Following one particularly strong flare peak, the US Space Weather Prediction Center said users of high-frequency radio signals "may experience temporary degradation or complete loss of signal on much of the sunlit side of Earth."

Even pigeons and other species that have internal biological compasses could also be affected. Pigeon handlers have noted a reduction in birds coming home during geomagnetic storms, according to NASA's Jet Propulsion Laboratory.

Officials said people should have the normal backup plans in place for power outages, such as having flashlights, batteries, and radios at hand.

The most powerful geomagnetic storm in recorded history, known as the Carrington Event after British astronomer Richard Carrington, occurred in September 1859.

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