Bine ati venit pe acest blog! Avem sansa de a trai in vremuri memorabile! Semnele sfarsitului timpului, sunt tot mai evidente. Sigur, e vorba de timpul cum il stim. Urmeaza un altul. Poate acelasi, poate nu! Admin, Romania megalitica

sâmbătă, 3 martie 2012

Soarele va ataca! Este suparat, chiar nervos! Problema nu este dacă vom fi loviţi de un eveniment solar major, ci când! - dixit un fost astronaut al NASA


Cities blacked out for up to a year, $2 TRILLION of damage - with a 1 in 8 chance of solar 'megastorm' by 2014, experts explore the worst that could happen

• If earth is hit by the same force as the worst recorded solar storm in history, 1859's Carrington Event, it would be devastating
• Magnetic force could disrupt global communications and take out power sources, with huge financial consequences
• The sun is entering a two-year period of increased activity, with a peak due before 2014
By Martin Robinson and Rob Waugh
2nd March 2012

Destructive: Scientists fear that the sun could be starting a 'hurricane season' of solar storms set to peak within the next two years.

There is a one in eight chance of a solar 'megastorm' before 2014, according to a Californian scientist - and other space weather experts agree that Earth is facing a burst of violent activity that will peak within two years.

It's unknown what effects this could have on our planet - but scientists have analysed the worst recorded solar event in history, 1859's Carrington Event, and worked out what effects a similar event would have now.


In our connected, satellite-reliant electronic age, the effects would be devastating, they say, as it would disrupt global communications and take out power sources, and could cause up to $2 trillion of damage.

They fear the sun could now be entering a two year 'hurricane season' of solar storms, and the star flared violently on Valentine's Day this year.


'We live in a cyber cocoon enveloping the Earth. Imagine what the consequences might be,' Daniel Baker, of the University of Colorado's Laboratory for Atmospheric and Space Physics told National Geographic when asked about a potential 'megastorm'.

'Every time you purchase a gallon of gas with your credit card, that's a satellite transaction.

'Imagine large cities without power for a week, a month, or a year. The losses could be $1 to $2 trillion, and the effects could be felt for years.'

More...Stolen Nasa laptop 'contained the codes to control the International Space Station' Astronomers find life on Earth: Reflected 'earthshine' on moon reveals 'biosignatures' which could lead us to life on other worlds


The sun has a storm cycle of around 12 years, known as a solar maximum, and as this period draws to a close it generally peaks with a series of intense storms.

The sun's last solar maximum was in 2000 so it should happen in the next year or two.

It could be these storms rival the infamous Carrington Event of more than 150 years ago, when telegraph stations caught fire and their networks suffered massive black-outs.

'The sun has an activity cycle, much like hurricane season. It's been hibernating for four or five years, not doing much of anything,' said Tom Bogdan, director of the Space Weather Prediction Center in Boulder, Colorado.


'Now the sun is waking up. The individual events could be very powerful.'

During the Carrington Event the northern lights were seen as far south as the Caribbean, while in America you could read a newspaper just from the light of the aurora.

Highly charged: Sun storms can have beautiful results, such as this aurora over Norway, but a gigantic flare could wreak havoc with our electrical systems

Pete Riley, a senior scientist at Predictive Science in San Diego, California, says there 12 per cent chance of being struck by a solar megaflare.

'Even if it's off by a factor of two, that's a much larger number than I thought,' he told Gizmodo after publishing his estimate in Space Weather on February 23.

More...Stolen Nasa laptop 'contained the codes to control the International Space Station' Astronomers find life on Earth: Reflected 'earthshine' on moon reveals 'biosignatures' which could lead us to life on other worlds

Low-intensity solar flares are quite common and can be readily seen in the form of auroras, light displays caused by the collision of charged particles with the Earth's atmosphere.

But the cost of a Carrington Event-type storm striking the planet could range anywhere from $1 trillion and $2 trillion in the first year alone, according to a 2008 report from the National Research Council.

'A longer-term outage would likely include, for example, disruption of the transportation, communication, banking, and finance systems, and government services,' the NRC report said, it was reported on Gizmodo.

'It could also cause the breakdown of the distribution of water owing to pump failure; and the loss of perishable foods and medications because of lack of refrigeration.'



UK scientists to help satellites dodge sun storms
Fri, Mar 2 2012; By Ethan Bilby

LONDON (Reuters) - British scientists have developed a system to help protect navigation and communications satellites from potentially devastating solar storms,
they said on Friday.


Services spanning everything from mobile phones to sophisticated weaponry increasingly depend on global positioning system, or GPS, technology. However damage by a massive burst of solar energy could knock out GPS satellites and send them veering into the paths of other craft or scramble their communications.


Led by a team from the British Antarctic Survey (BAS), researchers from six European countries will use satellite data and ground-based measurements of the earth's magnetic field to forecast changes in radiation. That will allow them to alert satellite operators of a sudden increase in dangerous particles and give them time to move the craft out of harm's way, power them down or fold sensitive wings away.


"For the first time, we can now forecast radiation levels for a whole range of different orbits, from geo-stationary to medium earth orbit where there is a tremendous growth in the number of satellites," said BAS researcher Richard Horne, who led the project. "Nobody has done that before."

GPS satellites are particularly vulnerable because they orbit closer to the earth, passing through the Van Allen belt - a magnetic field that surrounds the planet and a troublesome source of radiation for satellites at all times.

"We know that the radiation levels there are much higher than in geostationary orbit, but they're still subject to big changes and we have a lot less information on those medium earth orbit locations," Horne told Reuters.

STORM BREWING

The tremendous growth in GPS system satellites from many countries, including Europe's Galileo, means that monitoring near-earth space has become increasingly important.

The risk of storms is growing. The 11-year activity cycle of the sun is set to begin a peak of stormy activity in 2012-13, making forecasting all the more important.

Though solar radiation can take a day and a half to travel from the sun to the earth, the new system will still only be able to give satellite operators a few hours notice of a storm thanks to data from a relatively distant NASA satellite,
1.3 million km (800,000 miles) out in space.

The price of the 2.54 million euro (3.39 million dollar) system is tiny compared to the loss of even just one satellite.

A repeat of a "superstorm," like that seen in 1859 would wreak an estimated $30 billion of damage to satellites alone, according to government-funded BAS.

In 2003, a geo-magnetic storm caused more than 47 satellites to go haywire and led to the loss of one satellite valued at $640 million.

Commercial operators are cagey about just how vulnerable their satellites are to solar storms, but a spokesman for Virginia-based satellite manufacturer Orbital Sciences Corporation said such storms were a well-known concern.

"Space weather of course is a contributing factor to long-term satellite performance," said spokesman Barron Beneski. "If there is a new tool that would probably be welcome."

An Orbital satellite attracted attention in 2010 when it failed and remained unresponsive for months, a malfunction the company said could have been caused by space weather.



Problema nu este dacă vom fi loviţi de un eveniment solar major, ci când!
- dixit un fost astronaut al NASA -

Admin
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3 comentarii:

  1. Marmureanu: Anul acesta, in Romania ar putea fi un cutremur intre 6 si 7 pe scara Richter.
    ========================
    "Anul acesta, Romania ar putea fi zguduita de un cutremur cu o magnitudine cuprinsa intre 6 si 7 pe scara Richter''. Declaratia data duminica ii apartine profesorului Gheorghe Marmureanu, presedintele onorific al "Institutului de Fizica a Pamantului".

    Mesajul vine la 35 de ani distanta de la seismul devastator din '77.

    Suntem, asadar, in 4 martie, o data neagra pentru istoria tarii, dar nu trebuie sa intram in panica. Expertii sunt de parare ca, atata vreme cat miscarea tectonica nu va depasi 7 pe scara Richter, cladirile rezista. Chiar si cele cu bulina.

    Numai in Capitala sunt peste 272 de cladiri cu risc seismic 1, care, potrivit oficialilor din primaria Capitalei, prezinta un pericol de prabusire.

    "Inca era lumina, a inceput sa fiarba mozaicul din baie, se vedea cum se rupea si in momentul ala s-a stins lumina si a inceput sa cada blocul". Asa isi incepe povestea Ioana Popescu, unul dintre putinii romani care au supravietuit in blocul Scala.

    Astazi s-a intors acolo si spune ca, in 4 martie 1977, la varsta de 25 de ani, s-a nascut a doua oara. Era singura acasa, la etajul 11 al cladirii. Facea dus cand a inceput cutremurul.

    "A inceput sa cada blocul. Fiind de caramida s-a forfecat fiecare etaj. De la etajul 11 a ajuns ca un tort sa cada pana la etajul unu. Am intentionat sa ies cand am auzit strigate, dar nu am mai apucat. Am ramas sub tocul de 10 centimetri in cadere. Am venit pe burta pe el", isi aminteste femeia.

    Patru ore femeia a fost constienta. A stat nemiscata sub darmaturi, pana cand salvatorii au ajuns la ea.

    Monica Pop este doctorita care in acea noapte i-a salavat viata Ioanei. Pe atunci Monica Pop era studenta la medicina. A fugit la Spitalul de Urgenta sa-si ofere ajutorul.

    "Venisera vreo doua masini miliatare care depozitau in fata usii spitalului trupuri: vii, morti, de toate. Nu am cuvinte sa va spun ce zgomote erau acolo: plangeau, tipau, se vaicareau, nu mai stiau, isi strigau nume. Un soldat foarte tanar a venit cu un copil pe care il tinea de picioruse cu capul in jos. Copilul era mort. Era intr-o pijamaluta. Avea un an si ceva. M-a impresionat ingrozitor, a fost poate cel mai mic copil pe care l-am vazut asa", a spus medicul.

    In bezna, si cu putine echipamente la dispozitie, medicii au facut minuni.

    Nimeni nu poate spune cand va fi urmatorul cutremur devastator, de peste 7 pe Richter. Profesorul Gheorghe Marmureanu a afirmat insa ca romanii se pot astepta in perioada urmatoare la un seism de intensitate destul de mare.

    Specialistii in rezistenta cladirilor ne asigura ca un cutremur mai mic de 7 nu este foarte periculos si nu are forta sa puna la pamant nici macar blocurile cu bulina.

    Potrivit primariei Bucuresti, in Capitala sunt 272 de cladiri care "prezinta predicol de prabusire, in cazul unui cutremur major". Numarul real ar putea fi mult mai mare, deoarece multe proprietati nu au fost expertizate

    In prezent, Romania are si un sistem de avertizare care poate atentiona autoritatile cu 30 de secunde inainte ca unda de soc sa loveasca. Insa potrivit, profesorului Marmureanu, din lipsa de fonduri doar cateva institutii sunt legate la el.

    Sursa: Pro TV

    RăspundeţiȘtergere
  2. Cea mai mare futună solară din ultimii cinci ani se îndreaptă spre Pământ.
    ==========================
    Cea mai mare furtună solară din ultimii cinci ani urmează să-şi facă joi simţite efectele pe Terra, existând riscul de a afecta câmpul magnetic al Pământului, mărind în acelaşi timp aurora boreală.

    Furtuna a început cu o erupţie solară masivă la începutul săptămânii care apoi s-a propagat în exterior ca o bulă gigantică de săpun, susţin oamenii de ştiinţă. Când vor lovi Pământul, particulele se vor deplasa cu o viteză de 6,4 milioane de km/h.

    'Ne va lovi direct în faţă', a declarat Joe Kunches, om de ştiinţă în cadrul National Oceanic and Atmospheric Administration (NOAA).

    RăspundeţiȘtergere
  3. Furtuna solară din această săptămână, cea mai puternică din ultimii opt ani
    ==========================
    Furtuna solară care a lovit Pământul în această săptămână a crescut în intensitate în timpul nopţii de joi spre vineri pentru, devenind cel mai puternic eveniment geomagnetic începând cu 2004, noi perturbări fiind aşteptate duminică, potrivit experţilor.

    Această furtună geomagnetică a avut gradul unu, cel mai mic nivel pe o scară de la unu la cinci. Nu a provocat decât perturbaţii mici de echipamente electrice şi de comunicaţii, câteva avioane schimbându-şi itinerariul, au declarat oficialii agenţiei americane responsabilă cu studiul atmosferei şi al oceanelor (NOAA).

    Cu toate acestea, furtuna s-a înrăutăţit în timpul nopţii de joi spre vineri, gradul ei fiind actualizat la trei ("puternic"), a declarat Bob Rutledge, membru NOAA.

    "Suntem, în cele din urmă, în prezenţa unei furtuni mult mai puternice decât ne aşteptam", a declarat el vineri, adăugând că "în termeni de durată şi intensitate, acesta este cea mai puternică furtună solară începând cu anul 2004".

    Pentru Rutledge, "deşi furnizorii de energie electrică s-au confruntat cu perturbări în cadrul reţelelor lor, aceştia nu ar trebui să fie depăşiţi de eveniment".

    RăspundeţiȘtergere

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