Earthquake Thread ~ Always Updated

Magnitude 3.9
Region SALTA, ARGENTINA
Date time 2019-09-20 13:26:55.0 UTC
Location 24.29 S ; 67.57 W
Depth 229 km
[link to m.emsc.eu (secure)]

Magnitude 3.6
Region PANAMA-COSTA RICA BORDER REGION
Date time 2019-09-20 13:51:30.0 UTC
Location 8.65 N ; 82.78 W
Depth 32 km
[link to m.emsc.eu (secure)]

Magnitude 2.2
Region OKLAHOMA
Date time 2019-09-20 14:29:03.1 UTC
Location 36.27 N ; 97.64 W
Depth 5 km
[link to m.emsc.eu (secure)]

Artificial Intelligence Takes On Earthquake Prediction
After successfully predicting laboratory earthquakes, a team of geophysicists has applied a machine learning algorithm to quakes in the Pacific Northwest.

Johnson’s team is among a handful of groups that are using machine learning to try to demystify earthquake physics and tease out the warning signs of impending quakes. Two years ago, using pattern-finding algorithms similar to those behind recent advances in image and speech recognition and other forms of artificial intelligence, he and his collaborators successfully predicted temblors in a model laboratory system — a feat that has since been duplicated by researchers in Europe.

Now, in a paper posted this week on the scientific preprint site arxiv.org, Johnson and his team report that they’ve tested their algorithm on slow slip quakes in the Pacific Northwest. The paper has yet to undergo peer review, but outside experts say the results are tantalizing. According to Johnson, they indicate that the algorithm can predict the start of a slow slip earthquake to “within a few days — and possibly better.”

“This is an exciting development,” said Maarten de Hoop, a seismologist at Rice University who was not involved with the work. “For the first time, I think there’s a moment where we’re really making progress” toward earthquake prediction.

[link to www.quantamagazine.org (secure)]


Here's a link to the above mentioned paper. [link to arxiv.org (secure)]

Yellowstone volcano: Supervolcano hit by 123 earthquakes in just 28 days

Yellowstone supervolcano has been rocked by 123 tremors in the past 28 days, leading to some concern in the scientific community. This means there has been more than four earthquakes a day on average, according to statistics from the US Geological Survey (USGS). All of the tremors have been relatively small, with the largest being a 2.7 magnitude quake on August 29.

Some experts argue that it is not the size of the earthquakes which are used to forecast an eruption, but the quantity of tremors.

Portland State University Geology Professor Emeritus Scott Burns has said a spate of small earthquakes around a volcano could be a sign that magma and gasses beneath the surface are beginning to navigate their exit.

He said: “If you get swarms under a working volcano, the working hypothesis is that magma is moving up underneath there.”

[link to www.express.co.uk (secure)]

Very interesting. Thanks.

Good Friday morning and thank you for the updates.

Good Morning John!

Tiny, deep earthquakes under Washington less powerful than before, scientists say

SEATTLE — The rash of tiny, deep earthquakes doesn't predict earthquake risk in Seattle. But this time they are less robust and scientists want to know why.

First discovered by Japanese scientists, these so-called "silent earthquakes" are deep tremors around the earthquake prone Pacific Rim. A little over 20 years ago, we didn't know they existed.

"Every 14 months for 20 years, we've been seeing regular clockwork events," said Harold Tobin, Washington state's seismologist and head of the Pacific Northwest Seismic Network based at the University of Washington.

Tobin said they've noticed an interesting shift in this batch of silent earthquakes. The change this time is that the pattern of deep earthquakes is not as robust as other events which have been watched since the late 1990s.

"We don't know if that's a major change, or [if] the next one will cycle back to the normal pattern," he said.

Scientists have only known about the quakes for 20 years, yet we know subduction and the drift of continental plates has gone on for billions of years. In that context, the last two decades are a mere peek into a much, much longer time horizon.

"This is a deviation from that pattern," said Tobin. "I can't draw any conclusion from that until we learn more."

The same plate that makes for interesting science 40 miles underground, is connected to a system where the upper plate can lead to the world's biggest earthquakes. When those magnitude 8.0-9.0 earthquakes are triggered, massive tsunamis follow. Such was the case in northeastern Japan in Marcy of 2011, when an estimated 16,000 people were killed, mostly by the tsunami waves, Japanese authorities said.

[link to www.king5.com (secure)]

Simulations show tsunami threat in Washington state

Simulations from the Washington Geological Survey shows where large tsunami waves triggered by an earthquake will hit Washington state. KING 5's Glenn Farley reports.


[link to www.youtube.com (secure)]

Magnitude 4.0
Region OFFSHORE OAXACA, MEXICO
Date time 2019-09-20 15:11:35.0 UTC
Location 15.69 N ; 95.34 W
Depth 33 km
[link to m.emsc.eu (secure)]

Magnitude 4.4
Region MOLUCCA SEA
Date time 2019-09-20 15:50:33.0 UTC
Location 1.24 N ; 125.70 E
Depth 26 km
Macroseismic
Intensity F Effects: Felt
[link to m.emsc.eu (secure)]

pop up

Magnitude 3.5
Region SOUTHERN IRAN
Date time 2019-09-20 15:50:26.5 UTC
Location 27.68 N ; 53.21 E
Depth 4 km
[link to m.emsc.eu (secure)]

Magnitude 4.5
Region ATACAMA, CHILE
Date time 2019-09-20 16:33:53.0 UTC
Location 28.58 S ; 71.22 W
Depth 40 km
[link to m.emsc.eu (secure)]

Magnitude 2.6
Region OKLAHOMA
Date time 2019-09-20 16:42:08.4 UTC
Location 34.44 N ; 97.46 W
Depth 1 km
[link to m.emsc.eu (secure)]

Magnitude 3.7
Region SOUTH OF ALASKA
Date time 2019-09-20 16:57:20.6 UTC
Location 55.72 N ; 151.86 W
Depth 12 km
[link to m.emsc.eu (secure)]

Edit: Upgraded to 3.8

Last Edited by Simple27 on 09/20/2019 11:36 PM

Happy Friday Quakesters!

I hope you all have a great weekend!

Happy Friday and weekend my friend and to everyone!

Love to all!

To borrow from Saddam, it looks like the Mother of all Hurricanes.

Just hope it's just a fantasy dream of models...

[link to www.nhc.noaa.gov (secure)]

Happy weekend everyone!

Magnitude 3.3
Region TARAPACA, CHILE
Date time 2019-09-20 17:39:42.0 UTC
Location 19.24 S ; 70.19 W
Depth 45 km
[link to www.emsc-csem.org (secure)]

Magnitude 4.0
Region OFFSHORE CHIAPAS, MEXICO
Date time 2019-09-20 17:44:22.0 UTC
Location 14.47 N ; 92.50 W
Depth 103 km
[link to www.emsc-csem.org (secure)]

Magnitude 3.3
Region HAITI REGION
Date time 2019-09-20 18:01:21.0 UTC
Location 19.81 N ; 72.14 W
Depth 1 km
[link to www.emsc-csem.org (secure)]

Magnitude 4.7
Region CATANDUANES, PHILIPPINES
Date time 2019-09-20 18:04:20.2 UTC
Location 13.94 N ; 124.47 E
Depth 10 km
[link to www.emsc-csem.org (secure)]

Magnitude 3.1
Region ANTOFAGASTA, CHILE
Date time 2019-09-20 18:10:30.0 UTC
Location 22.45 S ; 68.46 W
Depth 124 km
[link to www.emsc-csem.org (secure)]