Say what?https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019SW002329
In the eastern United States, there is a particularly high hazard region just east of the Appalachian Mountains that trends northeast‐southwest and extends from Maine to Georgia (Kelbert et al., 2019). This area of high hazard between the Atlantic Coastal Plain and the Appalachian Mountains is associated with an anomalous coast‐parallel resistor within the upper mantle (Murphy & Egbert, 2017) and is in stark contrast to areas of relatively low hazard on either side of it.
Abstract
A once‐per‐century geoelectric hazard map is created for the U.S. high‐voltage power grid. A statistical extrapolation from 31 years of magnetic field measurements is made by identifying 84 geomagnetic storms with the Kp and Dst indices. Data from 24 geomagnetic observatories, 1,079 magnetotelluric survey sites, and 17,258 transmission lines are utilized to perform a geoelectric hazard analysis with the most comprehensive data publicly available. With these data, we estimate once‐per‐century geoelectric fields at the magnetotelluric survey sites and calculate the theoretical voltages within transmission lines in the U.S. power grid. Once‐per‐century geoelectric field strengths span more than 3 orders of magnitude from a minimum of 0.02 V/km at a site in Idaho to a maximum of 27.2 V/km at a site in Maine, with nearly 30% of the surveyed land area exceeding 1 V/km. We show the influence that geoelectric field polarization has on geoelectric hazards when viewed on a power transmission network. The calculated transmission line voltages can approach 1,000 V in some transmission lines. Four regions in the United States with particularly notable geoelectric hazards are identified and discussed: the East Coast, Pacific Northwest, Upper Midwest, and the Denver metropolitan area.
I do not believe you.I had no idea, that “the power grid” is contiguous ...
So when's this thing going to hit ? Can we flatten the curve? Do we have enough PPE?
I do not believe you.
Eastern grid, Western grid and Tejas. I don't have the actual history, but I believe it is a patchwork of connected grids that grew into what it is. Plenty of weak points and vulnerabilities.yeah, I felt a bit stupid having that “aha” moment now, but better late than never. But it’s interesting to me, thinking about our grid as an uninterrupted circuit at national scale. That’s crazy, not exactly intuitive and it’s not like they teach you such specific things is early school.
I always just thought “the grid” was connected to “a” electric network...not “the” network.
Actually less solar flares but more chance of a whopper of one, iirc.We almost caught one in 2012... not likely during this Super Grand Solar Minimum, though.
unpossibleAre you telling us this year is going to suck more?
He did, he said your mama so fat when she put a jacket on with a Confederate flag on th back a Helicopter tried to land on her.You calling my momma fat? Ain’t nobody talk a spit mah momma!
or did I misread that?
Redundant systems and automatic switching. Like most big systems, it's great until there are a couple simultaneous small problems that went unnoticed. Then, suddenly, the entire thing collapses.that is absolutely incredible. It seems unreal. Like more evidence I live in The matrix. How I the hell does such a large scale...machine, function so reliably? Was this a natural evolution or is there basic civil/electrical engineering principles that implied this would be the design outcome all along?
Redundant systems and automatic switching. Like most big systems, it's great until there are a couple simultaneous small problems that went unnoticed. Then, suddenly, the entire thing collapses.
I take it most of you weren't up north in 2003...
I remember seeing some dude sneaking in the dark hopping over into a new neighbor's back yard.
A couple of us ran to the homeowner's door to let him know. I knocked on the door and suddenly found the door ripped open with a gun pointed in my face. He had a wife and kid crouching behind him in candlelight.
I said "whoah man, I live across the street and I just wanted to let you know I saw a guy hopping your fence and getting in your back yard."
he replied "Well, let's go see if he's still there" as his wife locked the door behind him.
Most of the neighbors spent the next couple nights doing a lot of "stargazing", while armed.