Discover and read the best of Twitter Threads about #Earthquake

Most recents (24)

Powerful #earthquake jolts northeast #Japan but no reports of major injury | Mar 16
- The tremor hit off the coast of #Fukushima prefecture, some 275 kilometres northeast of Tokyo and at a depth of 60 kilometres, the Japan Meteorological Agency (JMA) said.
streetinsider.com/ETFs/Powerful+… Image
No abnormalities at stricken Fukushima power plant after 7.3-magnitude quake: #Japan nuclear authority | Mar 17
- #TEPCO said that around 2M households were without power, including 700,000 in the capital, and that it was checking the condition of reactors
channelnewsasia.com/asia/no-abnorm…
7.3 magnitude #earthquake rocks #Japan; #tsunami advisory issued | Mar 16, 2022
Read 5 tweets
⚠️#FakeNews alert!!!
#FactCheck: Old pictures from 2005 earthquake peddled as from #BalakotAirStrike.

We did a fact check on the circulating image traced them back to 2005 where an #earthquake hit #BalakotAirStrike.

Thread.
Claim: Several tweeteratis shared images where people can be seen burying dead bodies. Handles claim those images from Balakot attack.

Fact: The images are scenes from an earthquake that hit #Kashmir in 2005 where several lost their lives.
Starting Feb 25, 2022, multiple pro-indian social media users started tweeting on Balakot and posted several videos, texts & photos. We came across an image where it shows several dead bodies being buried. Users claimed it as #BalakotSuccess.
Read 6 tweets
Daily Bookmarks to GAVNet 02/15/2022 greeneracresvaluenetwork.wordpress.com/2022/02/15/dai…
COVID-19 Counter Measures Should be Age Specific ⋆ Brownstone Institute
brownstone.org/articles/covid…
#COVID19, #CounterMeasures, #AgeSpecific, #OpEd
America faces greater division as parties draw safe seats for congressional districts
theguardian.com/us-news/ng-int…
#CongressionalDistricts, #HouseOfRepresentativesSeats,#PartisanPolitics, #remapping
Read 20 tweets
You might hear a geologist say: "We can't predict earthquakes."

Well, WHY NOT???

1/n

🧵⬇️⬇️⬇️

#earthquake #earthquakeprediction
First, let's define "prediction". A useful #earthquakeprediction will tell you where, when, and how big a significant #earthquake will be, with a reasonably high success rate.

That's different from #forecasting, #earlywarning, and #aftershocks. 2/n

To date NO ONE has developed an effective way to predict significant earthquakes.

Issue #1: Faults are fractal.

"But we know where the tectonic plates are!"

Yes, mostly, but plate boundaries are complicated - see the maps below comparing plates vs. faults. 3/n

#tectoplot
Read 23 tweets
The eruption is over but the ground is still shaking - there have been dozens of #earthquakes around the #HungaTonga #volcano (magnitude 4.5-5), continuing today. 1/3

#GoogleEarth #Tonga #earthquake
Many are likely due to slip on existing faults or fracturing of new ones due to changes in crustal stress caused by the eruption. Others may be linked to magma movement, although that usually produces a more persistent signal called #volcanictremor. 2/3

volcano.oregonstate.edu/volcano-sounds…
I haven't seen any focal mechanisms for these events, which would tell us more about the type of #earthquake - it may be difficult to extract that information as these events are M5 or less, and seismic networks are sparse in this region. 3/3
Read 3 tweets
Oh, cool!

Stress is basically how much the rocks are being squeezed, and in which direction. If we can know that, and also know how *strong* the rocks are, we can estimate whether they will break.

But it's super hard to measure... 1/n
When rocks *do* break (#earthquake!), we can use that to estimate stress. If you know the direction of slip, you can do even better. This even works for earthquakes that occurred long ago, if they left scratches on the fault!

rickallmendinger.net/faultkin

2/n
Or, if you have a lot of money and time, you can drill into the Earth and measure the orientation of maximum squeezing based on how the borehole deforms.
#boreholebreakouts

3/n

jgs.lyellcollection.org/content/162/1/… Image
Read 11 tweets
☀️ Thx to everyone that tagged me and dm! It's greatly appreciated! 💘 I have to go to work. Plz keep me informed, ty! 😁

"Minor G1-class geomagnetic storming could continue on Jan. 15th and 16th as Earth enters a high-speed stream of solar wind."
Aurora 📸 Sweden Image
Read 4 tweets
Incredible satellite footage of the volcanic eruption in #Tonga ..

#Tsunami alert going on currently as well and footage showing it’s already started hitting some islands.. crazy🤯

Mother Nature is undefeated 🌊💨
Praying for everyone being affected by this..

Cannot imagine seeing this with my own eyes.

*not my footage*
#Volcano #Tonga #HungaTonga #HungaTongaHungaHaapai #underwater #Tsunami #Tonga #Oceania #MotherNature
Read 30 tweets
A Mw6.6 #earthquake just occurred below the W tip of #Java, #Indonesia. Here, the Indo-Australian Plate is sinking below the Sunda Plate. To the north, this #subductionzone produced the devastating Mw9.1 2004 Indian Ocean earthquake and tsunami. 🧵1/5

#tectoplot Image
Fortunately, a Mw6.6 is much, much smaller than a Mw9.1 - 5000x less energy! 2/5

earthquake.usgs.gov/education/calc…
The earthquake depth (~35-45 km) is similar to the plate boundary fault, but the focal mechanism shows slip on a steeply dipping thrust fault. This likely represents a hanging wall splay fault, or fracture of the downgoing plate. 3/5

earthquake.usgs.gov/earthquakes/ev… Image
Read 5 tweets
¿Fue este un ATAQUE SORPRESA a un DUMB? #earthquake SWARM (2's y 3's) golpea NUEVO MEXICO cerca de las CAVERNAS DE CARLSBAD
Terremotos de magnitud 2.5+ del USGS, día pasado

2.8
57 km al S de la Ciudad de los Blancos, Nuevo México
2022-01-03 08:36:18 (UTC-08: 00)
7.3 km
3.5
58 km al S de Whites City, Nuevo México
2022-01-03 08:00:08 (UTC-08: 00)

7,7 kilometros
2.5
57 km al S de la Ciudad de los Blancos, Nuevo México
2022-01-03 04:33:56 (UTC-08: 00)
5.0 km

3.2
59 km al S de Whites City, Nuevo México
2022-01-03 01:28:27 (UTC-08: 00)
5.0 km
3.5
58 km al S de la Ciudad de los Blancos, Nuevo México
2022-01-03 01:08:30 (UTC-08: 00)
7.3 km

3.7
58 km al S de la Ciudad de los Blancos, Nuevo México
2022-01-02 22:30:53 (UTC-08: 00)
5.0 km
Read 4 tweets
Thread🧵 | #KansasFires
While working live on wildfires/storms, I frequently discover mapping crossovers to my quake work.
Today I'm tracking yesterday's fires + March 2017/2020 fires & mapping with current/past #Kansas #earthquake swarms + faults. ⬇️👀
#kswx #ksfire #wildfire
Read 76 tweets
Every year on October 17, we take a moment to reflect on the 1989 #LomaPrieta #earthquake. The 6.9-magnitude earthquake was one of the most powerful and costly quakes to shake the San Francisco Bay area since the 7.9-magnitude earthquake of 1906. (1/15)
The quake caused an estimated $6 billion in damage and, tragically, resulted in 63 deaths and 3,757 injuries.
Many of those casualties were due to failing infrastructure when sections of the Nimitz Freeway collapsed. (2/15)
Simpson @strongtie was founded in Oakland, California. Earthquakes were never far from the minds of our founders. It’s why even before Loma Prieta our mission was to provide solutions that help people design and build safer, stronger structures. (3/15)
Read 16 tweets
#BREAKING
Magnitude 6.3 earthquake strikes Greek holiday island of #Crete 
The quake was at a depth of 2 km, #EMSC said.

#Greece #Earthquake #BreakingNews
mol.im/a/10083447 via @MailOnline
6.3 Earthquake Strikes #Crete, #Greece

According to the European-Mediterranean Seismological Centre, a 6.3-magnitude quake was registered on Tuesday, 120 kilometres from the city of #Heraklion, Greece.
#Earthquake
Long Version: ➡️
UPDATE | #Tsunami warning issued following 6.3-magnitude earthquake in #Crete
#Greece
Read 7 tweets
2/ 3 miles from us. We sensed it, but didn’t really “feel” it.
3/ UPDATE
Read 4 tweets
**New publication alert**
What could happen to communication networks if a large #earthquake happened in the SF Bay Area, along the Hayward fault? 📞📱☎️📳
The new #HayWiredScenario chapter on telecommunications & ICT asks “what if” & explains why we should #TextNotTalk Map depicting SCENARIO distribution of shaking severity in a
Using proxies including power shutoffs, wildfires, & other earthquakes to model what happens to #telecom in a #HayWiredScenario, they found vulnerabilities in power service, cell sites on buildings and poles, and data lines crossing the fault surface rupture. Map of the San Francisco Bay region, California, showing fib
Contributing to the issue are multiple competitive service providers in a largely unregulated industry, convergence of analog and digital systems, layers of hardware and software functionality, dependence on electric power, and the rapid evolution of technology. Photo showing co-located electrical and telecom infrastructuThese photos show repair dependence between telecommunicatio
Read 9 tweets
Why do strong Earthquakes take place in Haiti? Does it have something to do with Plate Tectonics?
What are the factors that put Haiti at risk?
Learn more in this thread on today’s #GeoAgenda with our collab w/@Daniela_A_Gallo ! 1/n
A magnitude 7.2 (M 7.2) #earthquake struck #Haiti on August 14- west of the capital city, #PortAuPrince, and 50km west of the magnitude 7.0 devastating EQ that took place in 2010 which killed ~100,000 people and devastated the Island. 2/n
Both EQ;s were produced in the #EnriquilloPlantain fault zone, a complex boundary between two #tectonicplates. To the north there is another tectonic boundary, and this makes the Hispaniola island to be sandwiched in between a complex geological terrain 3/n
Read 10 tweets
I have been asked where to donate for #earthquake response efforts in #Haiti. I donated to @PIH & @StBonifaceHaiti Both partner with local communities and govt to provide healthcare to those in greatest need. #haitiearthquake #globalhealth 💔 cc: @CPSolvers @DxRxEdu @rabihmgeha
healthequityintl.org/news/respondin…
@StBonifaceHaiti is probably the best-resourced hospital in the affected region. I visited in 2012 and what was already an extraordinary facility and group of talented dedicated staff has only grown.
pih.org/article/statem…

@PIH has collaborated with rural communities and the Ministry of Health in Haiti for over 30 years. They were an integral part of the response to the 2010 earthquake, subsequent cholera outbreak, and rebuilding efforts.
Read 5 tweets
A catastrophic #earthquake in 2010 on this fault system in #Haiti killed ~250k people. It just ruptured again, this time to the west. Hopefully the lower population density in this region, further from Port-au-Prince, will mitigate the impact. 😧

#tectoplot #haitiearthquake
The updated focal mechanism for the earthquake from GFZ indicates the rupture was on land, and oblique thrust - similar to the overall 2010 event, which combines a mostly strike-slip mainshock with a cluster of smaller thrust earthquakes.

#tectoplot #haitiearthquake
Scattered aftershocks from the 2010 earthquake were still occurring up through this year, although none were close in magnitude to the mainshock.

#haitiearthquake
Read 6 tweets
A vague #tsunami was triggered yesterday in the Southern Atlantic at the South #SandwichIslands

Seismic data show a Mw7.5 #earthquake, but aftershocks and observed waves on various stations indicate a much larger (and probably more complex) mechanism.

risklayer-explorer.com/event/1273/det…
Right now, it is unclear what actually happend. Aftershocks stretch almost 300km from North to South and tsunami waves of 0.2 - 0.7m have been recorded in the Southern Atlantic & Indian Ocean. Too much for "just" Mw7.5
To at least mimic the potential tsunami, a virtual earthquake was simulated with a wave pattern roughly corresponding to the observed water levels.

This virtual earthquake was estimated to be around Mw8.3 with a 210 km length and a maximum slip of 20m.
Read 5 tweets
The #SouthSandwichIslands are a wonderful example of #platetectonics in miniature. The #SouthAmericanPlate is subducting west at ~7 cm/yr below the #SandwichPlate; this #subductionzone hosted a Mw7.5 #earthquake yesterday (Aug 12). 1/4

#tectoplot Image
The depth of the #earthquake is still poorly constrained. GFZ puts it shallow, above the plate interface, dip 11°. USGS puts it deeper, within the slab, dip 26° and non-double-couple. Historical events of this scale in the region are old so not much help - 1929, 1933, 1964. 2/4 ImageImage
Given the curvature of the #subductionzone, it would certainly be reasonable to have some intra-slab deformation, and fracturing could be complex, leading to non-double-couple. The closest large event (1964) was apparently quite deep (125 km). 3/4
Read 4 tweets
Well, I went into my old slides and found a desert trip I had before all this.

I went to this beautiful, small town known as Perfection, Nevada. A group of people from the Casino dropped me off there.

I met some friends, even though I felt some #Tremors
While there I became friends with Val Bacon and Earl Ward. Two cool guys who showed me how to get chicks and make money.

Join me as I go back to that wacky time. I still made it look good. I always do.
@RegaNorwegian Here's your one "I want this review" token being used.

Read 132 tweets

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