Neoteo
Day 29/10/2010 - 17.11h21 comentariosLa believes that NASA can take steps to protect us from solar storms. This type of event, during which a shower of high energy particles hit our planet causing outages and all kinds of electrical disturbances could be provided with sufficient time to take steps to minimize their effects. A warning system consisting of the SOHO spacecraft and NASA's twin STEREO allow us to make a 3D model of the phenomenon and off-critical systems before they are affected.
The next peak of solar activity is expected in 2012-2013Las statistics show that occurs every hundred years a solar storm powerful enough to stain the skies of Earth with stunning blood-red auroras. Unfortunately, this type of phenomenon is not limited to producing scary visual spectacles, but affects the operation of compasses and satellite outage occurs, it interferes with telecommunications networks, affecting nearly all electronic equipment that our civilization uses every day.
Fortunately, most solar storms are not enough large enough to cause effects "to Hollywood," but some of them could really get us into trouble. In 1859, for example, took place the so-called "Carrington Event", a super solar storm that disrupted the telegraph traffic and even burned some of their offices. If a similar event take place in the world, and economic losses and human lives would be enormous. Disconnect
time
A report issued by the National Academy of Sciences of the United States in 2008 warned that if a solar storm "important" were to occur in the present, we would experience widespread power outages, and even be damaged many of the main transformers used in distribution networks of electricity. To avoid this, NASA is working on a project called "Solar Shield" ("Solar Shield"), to alert the electricity distribution companies about the possibility of an event of this type with sufficient time to conduct the preventive shutdown of their systems. According
Antti Pulkkinen, a researcher at the Catholic University of America who work at Goddard Space Flight Center of NASA, "Solar Shield is a security system, new and experimental, applied to the electricity distribution network in North America. We that may be useful for specific processors time off from predicting which of them could be affected by solar storms. "
The cause of the malfunction of electrical networks during these events has its origin in an effect known as GIC ("Geomagnetically Induced Current" or "geomagnetically induced current). When the cloud of solar particles generated during a storm hits the Earth's magnetic field makes it begins to "tremble." These vibrations induce magnetic currents in all regions of the atmosphere, overloaded circuits, switches and, in extreme cases, melting the windings of the transformers.
The "Halloween storms"
This has happened in recent history: a geomagnetic storm much less severe than the Carrington event left without power for 9 hours to the entire Canadian province of Quebec on March 13, 1989. Transformers were damaged that day in Quebec, New Jersey, and Britain, accounting for more than 200 anomalies in the electrical distribution network in several countries. In October 2003, the "Halloween storms" caused blackouts in several areas of southern Sweden and Africa.
Terrible as these cases appear, the fact is that none of these storms can be purchased with the "Carrington Event", and according to the North American Electric Reliability Corporation (NERC) and the U.S. Department of Energy modern systems of power distribution are even more sensitive to the GIC. The NASA project could avoid these problems. Pulkkinen said that "solar shield into action when it detects a coronal mass ejection (CME, for Coronal Mass Ejection) on the sun images provided by SOHO and probes NASA's twin STEREO show the particle cloud from three points of view, allowing us to make a 3D model of the CME, and predict when it will arrive. "These particles take between 24 and 48 hours reach Earth, valuable time can be used to calculate the time and place that will hit our planet. With these data, the power distribution companies can disconnect their transformers to protect them. Preparations for 2012
Pulkkinen says that "Sun Shield" is now an experimental system that has never been tested during a real geomagnetic storm. Several distribution companies have installed monitors at key locations of their networks to support the NASA team in their predictions. As in recent years solar activity has been small and only a few storms have been relatively mild over the past year, the system has not been thoroughly tested. "We wish more energy-related companies from joining our research team," says Pulkkinen. "The more data we get, the quicker we can try and improve Solar Shield." The next peak of solar storms, which have a periodicity of approximately 11 years, is expected sometime in 2012 or 2013, so the implementation of this project can be crucial.
news published in:
http://www.abc.es/20101029/ciencia/
nasa-preparation-for-201010291303.html shield
Fan R-80 '- Ojos de Brujo If this world is constantly lost and not find a good reason rumba Lie and dance! Dance! Dance! Do not forget pa, but pa .. take better listen! 
0 comments:
Post a Comment