I got to put: "Experienced local earthquake" in an ICS form.
Not sure how I feel about that...
How big?
Quote from: PHall on April 01, 2020, 12:18:18 AMHow big?
Very light at my location, 6.5 at the epicenter. Southern Idaho.
The March 31, 2020, M 6.5 earthquake west of Challis, Idaho (about 120 km northeast of Boise), occurred as the result of complex strike slip faulting within the shallow crust of the North America plate. Preliminary focal mechanism solutions for the event, which describe the style of faulting in an earthquake, indicate slip likely occurred on a steeply dipping fault striking either east-west (right-lateral) or north-south (left-lateral). This earthquake occurred within the Intermountain Seismic Belt, a prominent zone of recorded seismicity in the Intermountain West, and is within the western part of the Centennial Tectonic Belt, an area of southwest-northeast extension north of the Snake River Plain. The quake is about 16 km north-northeast of the Sawtooth fault, a 60-km-long normal fault that extends along the eastern base of the Sawtooth Range.
Historic seismicity in the immediate vicinity of the March 31 earthquake is sparse; no earthquakes of M5+ have occurred within 50 km of this event over the past 50 years, and the most notable historic seismicity in the region occurred about 100 km to the east on the Lost River fault zone.
Quote from: Holding Pattern on April 01, 2020, 12:10:59 AMI got to put: "Experienced local earthquake" in an ICS form.
Not sure how I feel about that...
Better than some I can imagine.
I got to put: "Experienced local XXXXX" in an ICS form.
I got to put: "Experienced local YYYY" in an ICS form.
I got to put: "Experienced local ZZZZ" in an ICS form.
Lots of worse stuff out there.
Of the Big Four - earthquake, hurricane, wildfire, tornado - I have directly experienced the first two, and been really close to the third and fourth.
Earthquake: Loma Prieta, 17 Oct 1989, and Baja California, 4 Apr 2010
Hurricane: Donna, Sep 1960, NJ, and the remains of Camille, Aug 1969, Memphis
Wildfire: 2003, and 2007, SoCal, as close as three miles away
Tornado: drove through two systems in Missouri in May 1973
The jury's still out on which I least like.
A quake in the SLC area and then a quake in Southern Idaho. Something's moving down below.
Quote from: SarDragon on April 01, 2020, 03:47:50 AMOf the Big Four - earthquake, hurricane, wildfire, tornado - I have directly experienced the first two, and been really close to the third and fourth.
The jury's still out on which I least like.
Out of all natural disasters in the US, the only two I have yet to experience first hand are tsunamis and volcanoes. I have first hand experience in hurricanes, tropical storms, snow storms/blizzards, ice storms, microbursts, tornadoes (F4), flash flooding, major flooding, avalanche, sand storms, and many more.
Out of all that I have experienced thus far, tornadoes are my least favorite. Love chasing them, but do not like the 20 second warning at 2 am.
I felt that too, actually. It was pretty mild yet noticeable down here in southern
Idaho. It's the largest one we've had in the state since 1983. As of right now, all
that I know of in terms of damage is a closed stretch of one of our highways due to
an avalanche. Currently we've also had 37 aftershocks, as far as I know, they've all
been pretty mild and manageable.
Quote from: LSThiker on April 01, 2020, 05:22:59 AMQuote from: SarDragon on April 01, 2020, 03:47:50 AMOf the Big Four - earthquake, hurricane, wildfire, tornado - I have directly experienced the first two, and been really close to the third and fourth.
The jury's still out on which I least like.
Out of all natural disasters in the US, the only two I have yet to experience first hand are tsunamis and volcanoes. I have first hand experience in hurricanes, tropical storms, snow storms/blizzards, ice storms, microbursts, tornadoes (F4), flash flooding, major flooding, avalanche, sand storms, and many more.
Out of all that I have experienced thus far, tornadoes are my least favorite. Love chasing them, but do not like the 20 second warning at 2 am.
I've lived through two major earthquakes (Sylmar 1971, Northridge 1994, where I almost lost my house). We got zero seconds warning on both.
Living now in Tennessee, the tornado coverage is impressive. Minute by minute, street by street.
At this point, but admitting I haven't been hit by one personally yet, I like the odds with tornados better than earthquakes. (Subject to change).
Sent from my iPhone using Tapatalk
Quote from: LSThiker on April 01, 2020, 05:22:59 AMQuote from: SarDragon on April 01, 2020, 03:47:50 AMOf the Big Four - earthquake, hurricane, wildfire, tornado - I have directly experienced the first two, and been really close to the third and fourth.
The jury's still out on which I least like.
Out of all natural disasters in the US, the only two I have yet to experience first hand are tsunamis and volcanoes. I have first hand experience in hurricanes, tropical storms, snow storms/blizzards, ice storms, microbursts, tornadoes (F4), flash flooding, major flooding, avalanche, sand storms, and many more.
Out of all that I have experienced thus far, tornadoes are my least favorite. Love chasing them, but do not like the 20 second warning at 2 am.
I've lived through two major earthquakes (Sylmar 1971, Northridge 1994, where I almost lost my house). We got zero seconds warning on both.
Living now in Tennessee, the tornado coverage is impressive. Minute by minute, street by street.
At this point, but admitting I haven't been hit by one personally yet, I like the odds with tornados better than earthquakes. (Subject to change).
Sent from my iPhone using Tapatalk
I was very excited at my first earthquake. Geology geek since I was little.
Quote from: JC004 on April 02, 2020, 11:10:09 AMI was very excited at my first earthquake. Geology geek since I was little.
They very quickly lose their allure after you've been through a dozen or so.
October 16, 1999 - Hector Mine Earthquake.
https://en.wikipedia.org/wiki/1999_Hector_Mine_earthquake
I was on an upper floor of Bally's in Las Vegas waiting for an elevator. Vegas high rises
are built on seismic foundations that allow the buildings to shift. Since I was in a central
hub, I could see the places where the hallways meet shifting and separating in different directions.
All I heard was a loud rushing air sound and thought it was high winds shaking the building.
Little to no damage anywhere around me, but all the news reports were people who clearly were
partying who thought they were just too drunk to stand.
Sister at Harrah's in an elevator at the time felt nothing, friends at Luxor said they saw the floor
roll and then heard every slot machine in the casino cash out coins at the same time as people bolted outside.
I was headed out to eat anyway and took a walk around the strip, and when I got back an hour later there were still couples standing around outside with the husband looking tired and the wife hugging herself staring at the hotel scared to go back in.
The "rain" at Gold Nugget was the other big story.
Good times.
Quote from: PHall on April 02, 2020, 02:49:21 PMQuote from: JC004 on April 02, 2020, 11:10:09 AMI was very excited at my first earthquake. Geology geek since I was little.
They very quickly lose their allure after you've been through a dozen or so.
Hey, I live in the northeast; not the Pacific Rim. I was trying to summon one while standing on the SA Fault, but I failed that time.
Quote from: Holding Pattern on April 01, 2020, 12:10:59 AMI got to put: "Experienced local earthquake" in an ICS form.
Not sure how I feel about that...
On a slightly different but similar note: My mission brief yesterday included "State police will provide escorts"
So yeah, thats a first for me, too.
Quote from: JC004 on April 02, 2020, 06:30:14 PMQuote from: PHall on April 02, 2020, 02:49:21 PMQuote from: JC004 on April 02, 2020, 11:10:09 AMI was very excited at my first earthquake. Geology geek since I was little.
They very quickly lose their allure after you've been through a dozen or so.
Hey, I live in the northeast; not the Pacific Rim. I was trying to summon one while standing on the SA Fault, but I failed that time.
You probably weren't at the "right" spot on the San Andreas. You needed to be in Parkfield which has quakes just about daily.
Quote from: PHall on April 02, 2020, 09:04:43 PMQuote from: JC004 on April 02, 2020, 06:30:14 PMQuote from: PHall on April 02, 2020, 02:49:21 PMQuote from: JC004 on April 02, 2020, 11:10:09 AMI was very excited at my first earthquake. Geology geek since I was little.
They very quickly lose their allure after you've been through a dozen or so.
Hey, I live in the northeast; not the Pacific Rim. I was trying to summon one while standing on the SA Fault, but I failed that time.
You probably weren't at the "right" spot on the San Andreas. You needed to be in Parkfield which has quakes just about daily.
I wasn't. I was just joking around outside the vehicle because I saw a sign that marked it, where we were stopped. Obviously, I should have jumped up and down on it anyway.
Quote from: JC004 on April 03, 2020, 12:18:28 AMQuote from: PHall on April 02, 2020, 09:04:43 PMQuote from: JC004 on April 02, 2020, 06:30:14 PMQuote from: PHall on April 02, 2020, 02:49:21 PMQuote from: JC004 on April 02, 2020, 11:10:09 AMI was very excited at my first earthquake. Geology geek since I was little.
They very quickly lose their allure after you've been through a dozen or so.
Hey, I live in the northeast; not the Pacific Rim. I was trying to summon one while standing on the SA Fault, but I failed that time.
You probably weren't at the "right" spot on the San Andreas. You needed to be in Parkfield which has quakes just about daily.
I wasn't. I was just joking around outside the vehicle because I saw a sign that marked it, where we were stopped. Obviously, I should have jumped up and down on it anyway.
You ever see the movie Tremors? That's why you don't jump up and down.
I'm totally lost when it comes to films of CA being destroyed. Can't tell the difference anymore.
Google the movie title Tremors and be enlightened.
It's not like you're super busy these days.
Quote from: PHall on April 03, 2020, 02:52:24 AMGoogle the movie title Tremors and be enlightened.
It's not like you're super busy these days.
Hey, I'm county emergency services. :-P But I will at some point.
My late fiancee and I had an active volcano and tornado on our to-do list. ORM? HA!
At 1853 PDT, there was a 4.9 quake, 56 miles from me. Rumble, jiggle. No big thang.
Quote from: SarDragon on April 04, 2020, 02:28:44 AMAt 1853 PDT, there was a 4.9 quake, 56 miles from me. Rumble, jiggle. No big thang.
I felt it, too. Are we supposed to fill out a form or something?
I felt it too up in Riverside. Right in the middle of a Encampment call on Teams.
Our cadet commander who is a geology major thought it was cool.
She's originally from Minnesota where the ground doesn't move too much.
Quote from: ßτε on April 04, 2020, 03:09:48 AMQuote from: SarDragon on April 04, 2020, 02:28:44 AMAt 1853 PDT, there was a 4.9 quake, 56 miles from me. Rumble, jiggle. No big thang.
I felt it, too. Are we supposed to fill out a form or something?
If you have the MyShake app on your phone you can fill out a I felt it report.
MyShake. Wow, that's fascinating. 200K downloads worldwide already.
After spending some time strolling down that alley of the internet, I get that its half app to give warning, and half to crowd source seismic data. I still have to wonder how they expect to validate actual field acceleration data given the variability of the dampening function of the human body, coupled with the variability of where the phone may be during the event (hand held, hip pocket, purse... a huge delta). The natural freq of the human body can range from 8 - 12 Hz, alone! When you add in the cushioning of having it on a nice padded hip, or in a swaying hand, or in a purse... seems the data would be near useless without characterization of the anthropometry.
I did read through the below article (and several others off researchgate, etc.), but the discussion of IRQ/ZC processing didn't seem to account for these factors, even though they did a hardware accelerometer baseline, and gave a (very) brief mention of their neural network design approach.
https://advances.sciencemag.org/content/2/2/e1501055 (https://advances.sciencemag.org/content/2/2/e1501055)
Ref: Research Article
EARTH SCIENCES
"MyShake: A smartphone seismic network for earthquake early warning and beyond"
Qingkai Kong, Richard M. Allen, Louis Schreier and Young-Woo Kwon12 Feb 2016: Vol. 2, no. 2, e1501055 DOI: 10.1126/sciadv.1501055
So, with the deep talent pool we seem to have here on CT, does anyone have any experience with the system, or any thoughts on how they might have addressed this?
V/r
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