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Insurance Claims Reveal Hidden Electronic Damage From Geomagnetic Storms
KentuckyFC writes: On 13 March 1989, a powerful geomagnetic storm severely disrupted the Hydro-Québec high-voltage grid triggering numerous circuit breakers and blacking out much of eastern Canada and the northeastern U.S. Since then, Earth has been hit by numerous solar maelstroms without such large-scale disruption. But the smaller-scale effect of these storms on low voltage transmissions lines, and the equipment connected to them, has been unknown. Until now. Researchers from the Lockheed Martin Solar and Astrophysics Laboratory have analyzed insurance claims for damage to industrial electrical equipment between 2000 and 2010 and found a clear correlation with geomagnetic activity. They say that the number of claims increases by up to 20 per cent on the days of highest geomagnetic activity. On this basis, they calculate that the economic impact of geomagnetic damage must amount to several billion dollars per year. That raises the question of the impact these storms have on household electronic equipment, such as computers, smartphones and tablets, and whether domestic insurance claims might throw some light on the issue.
If you haven't already bought them, buy surge protectors. After replacing the fourth dishwasher in our less than 8 year old house due to circuitry issues we installed a whole house surge protector. They work and it doesn't take a magnetic storm to cause issues, most of the grid delivery is +/- 15% on voltage just in my area normally.
Harrison's Postulate - "For every action there is an equal and opposite criticism"
I thought it was common knowledge, ask any admin of a network with 100ft+ lines running between buildings. The gear connected to them often fries when solar flares hit. Sometimes it happens so reliably that they have a procedure to disconnect the lines when a solar flare is coming.
"When information is power, privacy is freedom" - Jah-Wren Ryel
I confirmed the effect of solar activity countrywide myself a few years ago...
I used to work in the NOC (Network operations center) for a major Telco. The job is pretty strait forward, there's an application that gets alerts from a vast and very diverse set of equipment all across the country and displays "alarms" when they are having problems. There are always alarms, but many are transient and a lot of the equipment will fix itself. Your job is to know what's bad, how bad it is and how to intervene if you need to. A remote in the backwoods of Georgia has a fire alarm... Call the fire department who will break down the door, hose down the equipment and put 10,000 people out of service for a week? Or notice that the same remote has a minor fan alarm thats not on your display because of the severity and know that what really is going on is the fan burned up and you can just send a field tech to replace it.
Anyways, that jobs a lot like war. Long periods of boredom punctuated by brief periods of terror. 100k people without 911 service wares at you. But in the slow times it's really boring so I was surfing one day and found this:
http://spaceweather.com/
It's a NASA website that shows the activity in space around the sun/earth. You can even download spreadsheets of past data.
This got me thinking so I exported alarm activity on the millions of pieces of equipment I watched for the same time period.
At first it didn't match up, but then I remembered there are local causes to. So I found some data on electrical storms and subtracted that...
Tada! I had a perfect graph showing the rise and fall of solar activity that matched nicely with my alarm activity. There were a few anomalies, but I'm not scientist. I could see that the effect was more negligible on our fiber networks, but still there. I attributed this to power fluctuations.
Excited I ran into my bosses office and told him to look at my charts. He said "That's fantastic! Good work! Really interesting! But useless I'm sad to say..."
I was baffled...
"Do you want me to block out the sun? This really is neat, but that's about it. We can't do anything about it."
I thought about it and finally agreed. It's is neat, but also unavoidable. At best we could use it to put more techs on staff on certain days, but that would be about it. And the fact is, there's ALWAYS someone on call... so, though being interesting, it's also irrelevant. About the most interesting part was that fiber made the issue go away... but we already knew fiber was better in just about all cases. This was just more proof.
Let's add some numbers to this. The Carrington Event had a peak change in magnetic field of about 1.5 microteslas. Suppose your table for some reason was 30 cm square and had a hundred turns of wire inside it around the perimeter, giving a total effective area of 9 square meters. In order for that 1.5 microtesla field to induce 1 V in the loop, the magnetic field change would need to happen in about 15 microseconds.... the actual change took hours. Even if it happened in a minute, the induced voltage would be 0.2 microvolts, still assuming your tablet had a huge coil of wire in it. (As opposed to say a 100 mile square loop, because you are looking at ground currents or an distribution system with unusual return path, you would get 600 V then...)
Most commercial broadcast transmitters these days are solid state. Lots of modules ganged up. For AM stations, essentially a giant DAC. For FM and TV, more likely lots of power combiners. There probably are some big shortwave broadcasters using big tubes, although Harris and Continental both have SS transmitters. And, of course, if you have a functioning station which was built in the 60s, you're going to keep it going.
Virtually all communications radio repeaters are solid state, and they are installed in places that get hit by lightning repeatedly.
Lightning protection is actually fairly well understood. It's not cheap to do it right, so for most consumer applications, it's cheaper to buy new gear in the event of a problem than to make it lightning proof. OTOH, if you're safety of life critical and need 24/7, 99.999% availability, you spend the money.