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Showing posts with label burst. Show all posts
Showing posts with label burst. Show all posts
Tuesday, October 9, 2012
CA Dreamin' Daily: AD-sensible Tips for webmasters and bloggers alike...
CA Dreamin' Daily: AD-sensible Tips for webmasters and bloggers alike...: Tip # 1 Be Specific to what you endorse, and what you don't. "Block Ad Channels from advertising on YOUR site. If you don't believe...
Thursday, July 19, 2012
Sunday, July 15, 2012
Thursday, April 12, 2012
Second tremor hit Western Mexico
MEXICO CITY (Reuters) - Two large earthquakes struck western Mexico, shaking buildings as far away as the capital and sending people rushing out of offices onto the streets, the U.S. Geological Survey said.
There were no reports of major damage after the first of the two tremors.
The USGS said the first quake on Wednesday evening in the western state of Michoacan had a magnitude of 6.5 -- and was recorded at a depth of 12.4 miles.
The second quake, in the early hours of Thursday off Baja California, was stronger at a magnitude of 6.9 and shallower at a depth of 6.2 miles.
Mexico City Mayor Marcelo Ebrard, writing on his Twitter account after the first quake, said there were no initial signs of serious damage.
Key services in the capital, including its subway system and the international airport, were operating normally.
"There was a nasty crunching sound in my bathroom and everything moved," said Adela Arceo, who was looking after two young children in the central Roma neighborhood of Mexico City.
There were no initial reports of casualties.
Emergency services in Michoacan and in the neighboring state of Guerrero, which has been hit by a series of recent quakes, reported no major problems on Wednesday.
"You could feel it, but there's no major damage. There are no reports, no emergency calls," said Agustin Lule, a spokesman for fire services in Uruapan, a town in Michoacan near the epicenter.
Reuters reporters in coastal areas of Guerrero and neighboring Oaxaca state said there was no damage.
The Honolulu-based Pacific Tsunami Warning Center said it had issued no tsunami warning, but staff oceanographer David Walsh noted the quake was close to water, big enough and potentially deep enough to cause one.
The two quakes followed two tremors that jolted Mexico within the past month. A 7.4 magnitude quake struck on March 20, damaging hundreds of buildings in the southwest. That was followed by dozens of aftershocks.
Earlier on Wednesday, an 8.7 magnitude earthquake struck off Indonesia, raising fears of a huge tsunami like the one that battered the Indian Ocean rim in 2004, but authorities said there were no reports suggesting a major threat.
(Additional reporting by Mica Rosenberg, Simon Gardner, Krista Hughes and Ana Isabel Martinez; writing by Dave Graham; editing by Ron Popeski)
Thursday, March 8, 2012
Solar storm headed toward Earth may disrupt power
March 07, 2012 1:26 PM
WASHINGTON (AP) — The largest solar storm in five years is racing toward Earth, threatening to unleash a torrent of charged particles that could disrupt power grids, GPS and airplane flights.
The sun erupted Tuesday evening, and the effects should start smacking Earth between 1 a.m. and 5 a.m. EST Thursday, according to forecasters at the federal government's Space Weather Prediction Center. They say the storm, which started with a massive solar flare, is growing as it speeds outward from the sun.
"It's hitting us right in the nose," said Joe Kunches, a scientist for the National Oceanic and Atmospheric Administration. He called it the sun's version of "Super Tuesday."
Scientists say the sun has been relatively quiet for some time. And this storm, while strong, may seem fiercer because Earth has been lulled by several years of weak solar activity.
"This is a good-size event, but not the extreme type," said Bill Murtagh, program coordinator for the space weather center.
The solar storm is likely to last through Friday morning, but the region that erupted can still send more blasts our way, Kunches said. He said another set of active sunspots is ready to aim at Earth right after this.
But for now, scientists are waiting to see what happens Thursday when the charged particles hit Earth at 4 million mph.
NASA solar physicist Alex Young added, "It could give us a bit of a jolt." But he said this is far from a super solar storm.
The storm is coming after an earlier and weaker solar eruption happened Sunday, Kunches said. The latest blast of particles will probably arrive slightly later than forecasters first thought.
That means for North America the "good" part of a solar storm — the one that creates more noticeable auroras or Northern Lights — will peak Thursday evening. Auroras could dip as far south as the Great Lakes states or lower, Kunches said, but a full moon will make them harder to see.
Auroras are "probably the treat we get when the sun erupts," Kunches said.
But there is potential for widespread problems. Solar storms have three ways they can disrupt technology on Earth: with magnetic, radio and radiation emissions. This is an unusual situation when all three types of solar storm disruptions are likely to be strong, Kunches said.
That means "a whole host of things" could follow, he said.
The magnetic part of the storm has the potential to trip electrical power grids. Kunches said utility companies around the world have been alerted. The timing and speed of the storm determines whether it knocks off power grids, he said.
In 1989, a strong solar storm knocked out the power grid in Quebec, causing 6 million people to lose power.
Solar storms can also make global positioning systems less accurate, which is mostly a problem for precision drilling and other technologies, Kunches said. There also could be GPS outages.
The storm also can cause communication problems and added radiation around the north and south poles, which will probably force airlines to reroute flights. Some already have done so, Kunches said.
Satellites could be affected, too. NASA spokesman Rob Navias said the space agency isn't taking any extra precautions to protect astronauts on the International Space Station from added radiation.
WASHINGTON (AP) — The largest solar storm in five years is racing toward Earth, threatening to unleash a torrent of charged particles that could disrupt power grids, GPS and airplane flights.
The sun erupted Tuesday evening, and the effects should start smacking Earth between 1 a.m. and 5 a.m. EST Thursday, according to forecasters at the federal government's Space Weather Prediction Center. They say the storm, which started with a massive solar flare, is growing as it speeds outward from the sun.
"It's hitting us right in the nose," said Joe Kunches, a scientist for the National Oceanic and Atmospheric Administration. He called it the sun's version of "Super Tuesday."
Scientists say the sun has been relatively quiet for some time. And this storm, while strong, may seem fiercer because Earth has been lulled by several years of weak solar activity.
"This is a good-size event, but not the extreme type," said Bill Murtagh, program coordinator for the space weather center.
The solar storm is likely to last through Friday morning, but the region that erupted can still send more blasts our way, Kunches said. He said another set of active sunspots is ready to aim at Earth right after this.
But for now, scientists are waiting to see what happens Thursday when the charged particles hit Earth at 4 million mph.
NASA solar physicist Alex Young added, "It could give us a bit of a jolt." But he said this is far from a super solar storm.
The storm is coming after an earlier and weaker solar eruption happened Sunday, Kunches said. The latest blast of particles will probably arrive slightly later than forecasters first thought.
That means for North America the "good" part of a solar storm — the one that creates more noticeable auroras or Northern Lights — will peak Thursday evening. Auroras could dip as far south as the Great Lakes states or lower, Kunches said, but a full moon will make them harder to see.
Auroras are "probably the treat we get when the sun erupts," Kunches said.
But there is potential for widespread problems. Solar storms have three ways they can disrupt technology on Earth: with magnetic, radio and radiation emissions. This is an unusual situation when all three types of solar storm disruptions are likely to be strong, Kunches said.
That means "a whole host of things" could follow, he said.
The magnetic part of the storm has the potential to trip electrical power grids. Kunches said utility companies around the world have been alerted. The timing and speed of the storm determines whether it knocks off power grids, he said.
In 1989, a strong solar storm knocked out the power grid in Quebec, causing 6 million people to lose power.
Solar storms can also make global positioning systems less accurate, which is mostly a problem for precision drilling and other technologies, Kunches said. There also could be GPS outages.
The storm also can cause communication problems and added radiation around the north and south poles, which will probably force airlines to reroute flights. Some already have done so, Kunches said.
Satellites could be affected, too. NASA spokesman Rob Navias said the space agency isn't taking any extra precautions to protect astronauts on the International Space Station from added radiation.
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