Madigan
User ID: 76727694 United States 05/15/2020 01:28 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354
@SeismoSue Aftershocks from the M6.5 #NevadaEarthquake cluster in proximity to the mainshock, as expected but, interestingly, the sequence includes a halo of more distance aftershocks...
Years ago, in another lifetime, I looked at triggered earthquakes following moderately large earthquakes & concluded that halos like this can be explained by the nature of wave propagation in the earth's crust...
Continental crust has a discontinuity at depth that we call the Moho (for short). Waves from an earthquake can travel down, hit the Moho, and, if it hits at certain angles, some of the energy bounces back up.
Typically you start to see this bouncy energy at distances of 50-100 km from the mainshock, depending on the depth of the Moho. Moho bounces are thought to have contributed to damage in the San Francisco Bay Area from the 1989 Loma Prieta earthquake,
and in a couple of papers I concluded that these bounces can give rise to a higher chance of triggered earthquakes/distant aftershocks. It'll be interesting to look at this sequence in detail. [ link to twitter.com (secure)] Quoting: KickinIt I just had to look it up: [ link to geology.com (secure)] Quoting: mistersplinter Thanks. Interesting, isn't it? I had never heard that term before Quoting: KickinIt Hi guys Yes, it is very interesting and I can see it on the earthquake map. In fact it looks like the halo is growing in all directions now. At first it looked like most of the energy was going south. But I see it spreading north now too. I am watching to see if we get a good sized one further south around Beatty. |
mistersplinter
User ID: 21279623 United States 05/15/2020 01:30 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 @SeismoSue Aftershocks from the M6.5 #NevadaEarthquake cluster in proximity to the mainshock, as expected but, interestingly, the sequence includes a halo of more distance aftershocks...
Years ago, in another lifetime, I looked at triggered earthquakes following moderately large earthquakes & concluded that halos like this can be explained by the nature of wave propagation in the earth's crust...
Continental crust has a discontinuity at depth that we call the Moho (for short). Waves from an earthquake can travel down, hit the Moho, and, if it hits at certain angles, some of the energy bounces back up.
Typically you start to see this bouncy energy at distances of 50-100 km from the mainshock, depending on the depth of the Moho. Moho bounces are thought to have contributed to damage in the San Francisco Bay Area from the 1989 Loma Prieta earthquake,
and in a couple of papers I concluded that these bounces can give rise to a higher chance of triggered earthquakes/distant aftershocks. It'll be interesting to look at this sequence in detail. [ link to twitter.com (secure)] Quoting: KickinIt I just had to look it up: [ link to geology.com (secure)] Quoting: mistersplinter Thanks. Interesting, isn't it? I had never heard that term before Quoting: KickinIt I had never heard of it before either. Very interesting...seems like something that would come up more often. I can understand why they shorten it, though...lol. "I have no special talents. I am only passionately curious." -- Albert Einstein |
Anonymous Coward User ID: 77635199 United States 05/15/2020 01:32 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Thanks Luis we have a prayer thread member from there said it was crazy lighting and thunder |
KickinIt
User ID: 74785546 United States 05/15/2020 01:34 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 HOLY CRAP HAPPY FRIDAY EVERYONE!!!!!!!!!! What is going on in NV? Wow wow wow I can't believe the swarm thats going on there. I have never seen anything like it. Maybe explains some of the ear ringing I've been experiencing, who knows. Something is going on thats for sure. Got the storm in the NE, storm(s) down in FL, NV quaking, Yellowstone getting a good shake, some big ones over on the other side of the Pacific plate.... Might be about time for all that pressure to pop that's been building up. Plus I thought there was a space event that was going to cause possible increase in EQ activity...can't remember if it was the sun or planet alignment or comet or what it was...too much going on. I did find this though, stating the Ridgecrest earthquake will increase seismic hazards, posted 5/11/2020: "Seismologists used a recently developed model to forecast aftershocks following the recent Ridgecrest earthquake sequence. Their findings revealed a short-term increase in seismic hazard in the region." [ link to temblor.net (secure)] Wonder if the hazard would include NV Quoting: dyin As far as the planetary stuff going on, you're probably thinking of this video I posted a day or two ago. He was definitely spot on stating larger activity would start on the 15th. [ link to www.youtube.com (secure)] The same guy had also posted this yesterday, which I don't think I posted here @ditrianum Excited atmospheric signals within a 5 mV band since yesterday could be a sign of upcoming increased seismic activity. [ link to twitter.com (secure)] As far as the aftershocks, they volume seems pretty normal to me for such a large, shallow quake. |
KickinIt
User ID: 74785546 United States 05/15/2020 01:42 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 pop ups Magnitude 4.1 Region NEAR COAST OF NICARAGUA Date time 2020-05-15 10:27:30.0 UTC Location 11.08 N ; 86.45 W Depth 14 km [ link to www.emsc-csem.org (secure)] Magnitude 3.2 Region SOUTH OF PANAMA Date time 2020-05-15 10:52:30.0 UTC Location 7.99 N ; 82.96 W Depth 24 km [ link to www.emsc-csem.org (secure)] Last Edited by KickinIt on 05/15/2020 01:42 PM |
KickinIt
User ID: 74785546 United States 05/15/2020 01:44 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354
pop ups Magnitude 3.0 Region COSTA RICA Date time 2020-05-15 04:24:30.0 UTC Location 10.20 N ; 84.15 W Depth 5 km [ link to www.emsc-csem.org (secure)] Magnitude 3.0 Region COSTA RICA Date time 2020-05-15 04:55:30.0 UTC Location 10.80 N ; 84.97 W Depth 194 km [ link to www.emsc-csem.org (secure)] |
dyin
User ID: 30241565 United States 05/15/2020 01:44 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 HOLY CRAP HAPPY FRIDAY EVERYONE!!!!!!!!!! What is going on in NV? Wow wow wow I can't believe the swarm thats going on there. I have never seen anything like it. Maybe explains some of the ear ringing I've been experiencing, who knows. Something is going on thats for sure. Got the storm in the NE, storm(s) down in FL, NV quaking, Yellowstone getting a good shake, some big ones over on the other side of the Pacific plate.... Might be about time for all that pressure to pop that's been building up. Plus I thought there was a space event that was going to cause possible increase in EQ activity...can't remember if it was the sun or planet alignment or comet or what it was...too much going on. I did find this though, stating the Ridgecrest earthquake will increase seismic hazards, posted 5/11/2020: "Seismologists used a recently developed model to forecast aftershocks following the recent Ridgecrest earthquake sequence. Their findings revealed a short-term increase in seismic hazard in the region." [ link to temblor.net (secure)] Wonder if the hazard would include NV Quoting: dyin As far as the planetary stuff going on, you're probably thinking of this video I posted a day or two ago. He was definitely spot on stating larger activity would start on the 15th. [ link to www.youtube.com (secure)] The same guy had also posted this yesterday, which I don't think I posted here @ditrianum Excited atmospheric signals within a 5 mV band since yesterday could be a sign of upcoming increased seismic activity. [ link to twitter.com (secure)] As far as the aftershocks, they volume seems pretty normal to me for such a large, shallow quake. Quoting: KickinIt YES!! Thank you, that is what I was thinking of. Truth never damages a cause that is just |
KickinIt
User ID: 74785546 United States 05/15/2020 01:44 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.7 Region NEVADA Date time 2020-05-15 17:25:23.3 UTC Location 37.98 N ; 118.10 W Depth 25 km [ link to www.emsc-csem.org (secure)] Magnitude 3.6 Region NEVADA Date time 2020-05-15 17:38:15.8 UTC Location 38.17 N ; 118.00 W Depth 0 km [ link to www.emsc-csem.org (secure)] |
joinca
User ID: 76969754 United States 05/15/2020 01:49 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 @Italianmike Looks good on them LOL...Cafe Customers Made To Wear Pool Noodle Hats To Impose Social Distancing [ link to twitter.com (secure)] "The government will one day be corrupt and full of liars, and the people will flock to the one that tells the truth." - “Tyranny is defined as that which is legal for the government but illegal for the citizenry.” - "The democracy will cease to exist when you take away from those who are willing to work and give to those who would not." - "I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them." - "A Country with no Border, is not a country" -- Thomas Jefferson
We MUST NEVER forget what Kamala Harris did to Justice Kavanaugh & his family! |
KickinIt
User ID: 74785546 United States 05/15/2020 01:55 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 @Italianmike Looks good on them LOL...Cafe Customers Made To Wear Pool Noodle Hats To Impose Social Distancing [ link to twitter.com (secure)] Quoting: joinca I love it, why not make it fun? |
KickinIt
User ID: 74785546 United States 05/15/2020 01:56 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.3 Region NEVADA Date time 2020-05-15 17:49:13.7 UTC Location 38.13 N ; 117.96 W Depth 6 km [ link to www.emsc-csem.org (secure)] |
Simple27 (OP)
User ID: 40488826 United States 05/15/2020 02:05 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Thanks Luis we have a prayer thread member from there said it was crazy lighting and thunder Quoting: Goofy for God ~*Ride the Wave*~ |
KickinIt
User ID: 74785546 United States 05/15/2020 02:07 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 4.4 Region NEVADA Date time 2020-05-15 17:50:16.5 UTC Location 38.19 N ; 117.83 W Depth 5 km [ link to www.emsc-csem.org (secure)] Magnitude 3.5 Region NEVADA Date time 2020-05-15 17:52:38.8 UTC Location 38.13 N ; 117.95 W Depth 2 km [ link to www.emsc-csem.org (secure)] |
Anonymous Coward User ID: 72516626 United Kingdom 05/15/2020 02:14 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Nevada quakes so shallow, reminds me when that fissure opened in Iceland. |
Anonymous Coward User ID: 78917931 Portugal 05/15/2020 02:19 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Thanks Luis we have a prayer thread member from there said it was crazy lighting and thunder Quoting: Goofy for God It will continue... |
Anonymous Coward User ID: 77635199 United States 05/15/2020 02:28 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354
Thanks Luis we have a prayer thread member from there said it was crazy lighting and thunder Quoting: Goofy for God It will continue... Quoting: Luisport Here in Texas going to get storms first through Sat |
Anonymous Coward User ID: 77635199 United States 05/15/2020 02:28 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Just wow |
KickinIt
User ID: 74785546 United States 05/15/2020 02:37 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.0 Region OFFSHORE COQUIMBO, CHILE Date time 2020-05-15 17:56:22.0 UTC Location 31.44 S ; 72.63 W Depth 21 km [ link to www.emsc-csem.org (secure)] |
KickinIt
User ID: 74785546 United States 05/15/2020 02:38 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 4.0 Region FLORES REGION, INDONESIA Date time 2020-05-15 17:59:35.0 UTC Location 8.42 S ; 119.57 E Depth 176 km [ link to www.emsc-csem.org (secure)] |
KickinIt
User ID: 74785546 United States 05/15/2020 02:38 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.0 Region NEVADA Date time 2020-05-15 18:02:04.3 UTC Location 38.15 N ; 117.85 W Depth 2 km [ link to www.emsc-csem.org (secure)] Magnitude 3.7 Region NEVADA Date time 2020-05-15 18:10:31.4 UTC Location 38.14 N ; 117.83 W Depth 5 km [ link to www.emsc-csem.org (secure)] |
KickinIt
User ID: 74785546 United States 05/15/2020 02:46 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.5 Region PERU-ECUADOR BORDER REGION Date time 2020-05-15 18:29:33.0 UTC Location 3.08 S ; 77.86 W Depth 5 km [ link to www.emsc-csem.org (secure)] |
KickinIt
User ID: 74785546 United States 05/15/2020 02:46 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.4 Region NEVADA Date time 2020-05-15 18:38:13.4 UTC Location 38.20 N ; 117.75 W Depth 2 km [ link to www.emsc-csem.org (secure)] |
Anonymous Coward User ID: 78917931 Portugal 05/15/2020 02:46 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 down 4mb in 24 hours at KEYW! |
KickinIt
User ID: 74785546 United States 05/15/2020 03:16 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.4 Region NEVADA Date time 2020-05-15 18:41:56.3 UTC Location 38.19 N ; 117.93 W Depth 3 km [ link to www.emsc-csem.org (secure)] |
KickinIt
User ID: 74785546 United States 05/15/2020 03:16 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 Magnitude 3.3 Region SAN JUAN, ARGENTINA Date time 2020-05-15 18:48:13.0 UTC Location 31.80 S ; 70.27 W Depth 117 km [ link to www.emsc-csem.org (secure)] |
KickinIt
User ID: 74785546 United States 05/15/2020 03:17 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354
Magnitude 3.3 Region NEVADA Date time 2020-05-15 18:51:51.0 UTC Location 38.14 N ; 117.99 W Depth 5 km [ link to www.emsc-csem.org (secure)] Magnitude 3.3 Region NEVADA Date time 2020-05-15 18:56:12.0 UTC Location 38.19 N ; 117.88 W Depth 3 km [ link to www.emsc-csem.org (secure)] Magnitude 3.6 Region NEVADA Date time 2020-05-15 19:05:08.8 UTC Location 38.21 N ; 117.72 W Depth 5 km [ link to www.emsc-csem.org (secure)] Last Edited by KickinIt on 05/15/2020 03:29 PM |
KickinIt
User ID: 74785546 United States 05/15/2020 03:18 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 pop up Magnitude 3.9 Region DOMINICAN REPUBLIC Date time 2020-05-15 18:31:32.6 UTC Location 18.79 N ; 69.39 W Depth 86 km [ link to www.emsc-csem.org (secure)] |
Simple27 (OP)
User ID: 40488826 United States 05/15/2020 03:43 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 A tornado watch has been issued for parts of MA, NH, NY, PA, VT until 10 PM EDT [ link to pbs.twimg.com (secure)] [ link to twitter.com (secure)] ~*Ride the Wave*~ |
InterMezzo
User ID: 45716769 Netherlands 05/15/2020 03:47 PM
Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 *flash visit*Happy Friday everyone! Hope things are good around here! Doing pretty good over here. Just needed to detach for a couple days to balance my energy levels. Slept quite bad a couple nights. Not sure why. Sun, Moon, other reasons.. Nothing wrong really. And it didn't even make me tired, just a bit disoriented. Still had the feeling I could be awake for 72 hours or so, lol. Anyway, keep your spirits up my friends! Much love to all of you. |
Anonymous Coward User ID: 77635199 United States 05/15/2020 03:51 PM Report Abusive Post Report Copyright Violation | Re: Earthquake Thread ~ Always Updated*5.5 Afghanistan ~ Pg 20354 *flash visit*:cathugim: Happy Friday everyone! Hope things are good around here! Doing pretty good over here. Just needed to detach for a couple days to balance my energy levels. Slept quite bad a couple nights. Not sure why. Sun, Moon, other reasons.. Nothing wrong really. And it didn't even make me tired, just a bit disoriented. Still had the feeling I could be awake for 72 hours or so, lol. Anyway, keep your spirits up my friends! Much love to all of you. Quoting: InterMezzo |