Posted on 05/29/2019 2:07:50 PM PDT by BenLurkin
The physics-heavy analyses of two databases....detected a point in time where a newly initiated earthquake transitions into a slip pulse where mechanical properties point to magnitude.
Melgar and Hayes also were able to identify similar trends in European and Chinese databases. Their study was detailed in the May 29 issue of the online journal Science Advances.
Overall, the databases contain data from more than 3,000 earthquakes. Consistent indicators of displacement acceleration that surface between 10-20 seconds into events were seen for 12 major earthquakes occurring in 2003-2016.
GPS monitors exist along many land-based faults, including at ground locations near the 620-mile-long Cascadia subduction zone off the U.S. Pacific Northwest coast, but their use is not yet common in real time hazard monitoring. GPS data shows initial movement in centimeters, Melgar said.
Japan already is laying fiber optic cable off its shores to boost its early warning capabilities, but such work is expensive and would be more so for installing the technology on the seafloor above the Cascadia fault zone, Meglar noted.
Melgar and Hayes came across the slip-pulse timing while scouring USGS databases for components that they could code into simulations to forecast what a magnitude 9 rupture of the Cascadia subduction zone would look like.
The subduction zone, which hasn't had a massive lengthwise earthquake since 1700, is where the Juan de Fuca ocean plate dips under the North American continental plate. The fault stretches just offshore of northern Vancouver Island to Cape Mendocino in northern California
(Excerpt) Read more at phys.org ...
I think you meant Yellowstone.
Preceded by a kiloquake?
I’d go with that, along with a side helping of at least one of the “big” volcanoes up there lighting off as well.
But it’s enough to turn off gas, fuel and some water pipelines. Most fires are caused by ruptured gas lines. It won’t save millions of lives, but will save a few.
It’s the bees (they know).
Sounds like only a few 20 seconds - almost even that the “warning “ occurs during the actual quake movement itself.
Yes. if the resulting tsunami were “detected” moments earlier than now - when the water movement into harbors and onto coastlines is felt hours after a quake.
But only seconds of warning?
I saw the hills move.
I didn’t see any earthquake in that top picture.
No, but I bet you felt one...................
And felt the mountains rise.................
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