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World War II-era oil pumping under Los Angeles likely triggered a rash of mid-sized earthquakes in the 1930s and 1940s, potentially leading seismologists to overestimate the earthquake potential in the region, according to new research published in AGU's Journal of Geophysical Research: Solid Earth.
Six independent earthquakes and two aftershocks of magnitude 4.4 to 5.1 shook L.A. between 1935 and 1944, a rate of about one every two years. The area also experienced a higher rate of low-intensity earthquakes during that time frame. After 1945, the rate dropped to one moderate earthquake every seven years.
The new study re-examined historical information about the earthquakes from archived newspaper reports of earthquake damage, postcard questionnaires collected by the Coast and Geodetic Survey, and other sources pulled from old files and the dusty corners of cyberspace.
The authors used this information to refine the earthquake locations identified by early earth-motion sensors. The first seismometers in the United States began monitoring earthquake activity in the L.A. region in 1932. It is known that these early instruments could err in locating earthquake epicenters by tens of miles because of the limitations of their clocks, and because the low-sensitivity instruments were so few, according to the study's authors. Extrapolation of earthquake location from seismometer recordings relies on accurate time measurements.
The oil companies active at the time associated their activities with increased earthquakes, because the quakes would often sever pipes and shutdown production for months.
(Score: 4, Touché) by JoeMerchant on Tuesday November 20 2018, @07:00PM (11 children)
Fracking is not a problem, the new EPA website tells me so, it must be true.
🌻🌻 [google.com]
(Score: 2) by DannyB on Tuesday November 20 2018, @07:24PM (2 children)
The new EPA website must be better than the old EPA website . . . because . . . well, . . . it's new.
To transfer files: right-click on file, pick Copy. Unplug mouse, plug mouse into other computer. Right-click, paste.
(Score: 4, Informative) by JoeMerchant on Tuesday November 20 2018, @08:22PM (1 child)
Yup:
https://mashable.com/article/epa-website-changes-fracking/#J_pr2W3NckqQ [mashable.com]
https://gritdaily.com/trumps-epa-just-changed-their-website-to-pro-fracking/ [gritdaily.com]
https://motherboard.vice.com/en_us/article/qvqkd3/the-epa-gave-its-website-a-pro-fracking-makeover [vice.com]
https://earther.gizmodo.com/the-epa-updated-its-fracking-pages-with-oil-and-gas-ind-1830497659 [gizmodo.com]
https://www.eenews.net/stories/1060072331 [eenews.net]
https://www.epa.gov/uog [epa.gov]
🌻🌻 [google.com]
(Score: 2) by DannyB on Tuesday November 20 2018, @08:40PM
Thank you for posting that.
To transfer files: right-click on file, pick Copy. Unplug mouse, plug mouse into other computer. Right-click, paste.
(Score: 1) by khallow on Thursday November 22 2018, @03:39PM (7 children)
(Score: 2) by JoeMerchant on Friday November 23 2018, @04:43PM (6 children)
Anything directed by the present executive office is random at best, almost as suspect of behind the scenes financial motivation as prior executive tenants, more likely based in crazy than any office since James Buchanan's, and probably the most suspect of influence by a potentially hostile foreign power ever (though that seems unlikely to be a factor in the fracking change...)
🌻🌻 [google.com]
(Score: 1) by khallow on Saturday November 24 2018, @06:42AM (5 children)
One doesn't need to look that far back. Obama's administration was pretty loony too with the EPA coming up with such gems as arguing in court [wikipedia.org] that someone had to pay a massive fine before they could contest the fine.
(Score: 2) by JoeMerchant on Saturday November 24 2018, @05:51PM (4 children)
There's a difference between lawyers being assholes (part of the job description, really) and actual crazy, ignorant, etc. For examples, sample any 3 presidential statements since February of 2017, at least one should stand out as something not worthy to come from the highest office in the land.
🌻🌻 [google.com]
(Score: 1) by khallow on Sunday November 25 2018, @06:15AM (3 children)
And that difference is?
Presidential statements aren't testimony before a court. Obama said some wacky shit too, but I didn't count that.
(Score: 1) by khallow on Sunday November 25 2018, @06:16AM
(Score: 2) by JoeMerchant on Sunday November 25 2018, @04:23PM (1 child)
Everybody says some wacky shit, the difference is the frequency and magnitude.
🌻🌻 [google.com]
(Score: 1) by khallow on Saturday December 01 2018, @08:22PM