Posted on 07/18/2016 7:49:56 PM PDT by BenLurkin
Like sea levels, the surface of the Earth also goes up and down with the tides, flexing the crust and stressing the faults inside....
“...[T]he moon, when it's pulling in the same direction that the fault is slipping, causes the fault to slip more – and faster,” said Nicholas van der Elst, a U.S. Geological Survey geophysicist...
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Like ocean tides, the strongest Earth tides occur when the sun and moon are aligned, and the weakest occur when they are 90 degrees apart. The same gravitational forces stretch and compress the Earth’s crust (though the rock moves less dramatically than seawater).
Some faults are more susceptible to tidal triggering than others, such as offshore faults like the Cascadia subduction zone off the Pacific Northwest coast, scientists said. Other characteristics of the fault, such as its orientation or how close it is to the Earth’s crust, also affect the tidal response. 'Seismic strain': Land around the San Andreas fault is rising and sinking, new earthquake research shows 'Seismic strain': Land around the San Andreas fault is rising and sinking, new earthquake research shows
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They also show that this part of the San Andreas is creeping, or slowly moving, almost all the time....
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“So if all of a sudden, we saw that the deep part of the fault was slipping a huge amount, it might be an indication that there was an increased chance of having an earthquake come at the shallower part of the fault,” he said.
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It’s like the fault has an earthquake budget...“If you used them up yesterday, you don’t have as many to trigger today. By actually measuring that, we get an estimate of what that stress budget is.”
Essentially, scientists now have a way to measure the fault’s recharge time in certain locations.
(Excerpt) Read more at latimes.com ...
The full moon brings out the crazies, while the new moon brings out the “hornies”.
It’s far less work to find an amenable member of the opposite sex that is willing to play during a new moon (2 or 3 days either side) than during the rest of the month.
At least that is my experience...
Since you follow earthquake movement, I’m sure that you are aware of this guy, right?
Michael Janitch aka Dutchsinse Springfield MO
www.dutchsinse.com
live feed on youtube: https://www.youtube.com/watch?v=PtOiyv5Fg-0
Commentary and earthquake prediction each evening at 7pm Central. Absolutely incredible.
Global warming causes gravitational pull?!!!
Fracking causes gravitational pull?!!!
I call Bull! Everyone knows it’s fracking and global warming and too many People...
Yes. I’ve been following his commentaries for awhile.
Yep. Heard this in high school science class (mid-'70s).
Can’t be true, any atmospheric or geothermic activity on the earth is caused by human pollution. /sarc
Dogs bark before earthquakes because they can hear the high pitched primary waves that occur just before the physical motion. This noise comes out of the ground.
I think they are called P-waves, and they travel just a little bit faster than the other waves, which is why folks think dogs bark BEFORE the earthquake.
Thanks for clearing that up. I thought it was the dogs barking that set off an earthquake. FWIW, a whole bunch of dogs barking sets me off. ;-)
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