Tsunamis Generated by Megathrust Earthquakes
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- Опубликовано: 6 авг 2024
- Earthquakes Subduction-zone mega-thrust earthquakes, the most powerful earthquakes in the world, can produce tsunamis through a variety of structures that are missed by simple models including: fault boundary rupture, deformation of overlying plate, splay faults, and landslides during earthquakes. From a hazards viewpoint, it is critical to remember that tsunamis are multiple waves that often arrive on shore for many hours after the initial wave.In this animation we explore different tsunami-producing mechanisms by examining three famous earthquakes: Japan 2011, Chile 2010, and Alaska 2014.
Written & directed by Robert F. Butler, University of Portland
Animation & graphics by Jenda Johnson, Earth Sciences Animated
Narrated by Katryn Wiese, City College of San Francisco
U.S. Geological Survey consultants:
Peter J. Haeussler, Alaska Science Center
Robert C. Witter, Alaska Science Center;
Reviewed by Susan Beck, seismologist, University of Arizona and George Zandt, seismologist, University of Arizona
Funding from the National Science Foundation 
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This should have way more views. Very informative
Your best yet, Bob & Jenda! Thank you for your excellence.
Really wonderful!
Thank you! Clear, concise and very educational!
I can't even imagine the titanic power of the rupturing fault that it could push up a wall of seawater.
Nature's power is unbelievable.
The energy released by the 2011 Tohoku earthquake in Japan was around 9,320 gigatons or the equivalent of 9,320,000 megatons of TNT, 600 million times the energy of the Hiroshima bomb explosion and the energy released by the 2004 Aceh earthquake was around 9,600 gigatons, equivalent to 9,600,000 megatons or 640 million times the energy of the Hiroshima bomb. Honestly, it's hard for me to imagine 🙂🙂
THE BEST THANKS
deformation, splay and thrust - I'll try and remember that
This is the best video on the subject
Brilliantly clear; I will be pointing folks here when I get asked about "why the sea withdraws ahead of a tsunami", and have to try to explain "it doesn't always"; if your are on a coast and feel an earthquake, go high, quickly - dont wait to see what the sea does in an attempt to guess if a tsunami is on the way. Water is not "sucked back into the oncoming wave" (thats just nonsensical physics), but the waves depend on the relative movement of the sea floor as animated here. And I learned about splay faults too (d@mn, they're nasty). Today is a good day for education, thank you :).
Published on Mar 26, 2014
Earthquakes Subduction-zone mega-thrust earthquakes, the most powerful earthquakes in the world, can produce tsunamis through a variety of structures that are missed by simple models including: fault boundary rupture, deformation of overlying plate, splay faults, and landslides during earthquakes. From a hazards viewpoint, it is critical to remember that tsunamis are multiple waves that often arrive on shore for many hours after the initial wave.In this animation we explore different tsunami-producing mechanisms by examining three famous earthquakes: Japan 2011, Chile 2010, and Alaska 1964:
Regarding the 1964 Alaska Earthquake, George Plafker of the USGS documented a third oblong zone of vertical displacement. This was an inboard zone of relatively minor uplift, northwest of the zone of subsidence, which in turn was inboard from the zone of large uplift. Progressing northwest, away from the primary fault, each zone exhibits vertical displacement in the opposite sense from the previous zone. (Comment by Jim Rosenbaum).
bagus sangat mendidik 👍..
Can I please use this video for educational purpose?
But does the oceanic plate move down at all? Looked like only the overriding plate gets displaced.
The oceanic plate moves down slowly over time pulling the continental plate with it, causing the continental plate to store energy.
@@charlesmayes3692yes it releases a lot of energy but is magnitude 9 equivalent to a million megatons? for example, I once read that the energy released by the 2004 Indian Ocean earthquake was 9,600 gigatons, which is equivalent to 9.6 million megatons of TNT.
Ngeri slurr
You had my attention until you said “processEEZ.” 😆
Convergent plate boundaries: Subduction zones
Divergent plate boundaries: Tectonic plates
Transform plate boundaries: Strike slip boundaries, right lateral
Where's Aceh-Indonesia? 😑 earthquake there to 9.2 SR 🤔
yeah those are called examples. not every tsunami have to included in the list. ada-ada aja.
Yea that was similar to the one in Japan. She gave one example each of the epicenter being undersea, coastal, and inland.
@@BrandyHein no it's not. Finite fault by USGS suggest that this earthquake (Sumatra-Andaman 2004) displacement is similar to Alaska earthquake 1964.
@@oskha1815 yes 4:23 the splay fault uplift made the tsunami bigger and larger, it's like a double uplift, that's why the tsunami is very destructive and destroyed many countries bordering the indian ocean.
Kocour Mourek The pronunciation depends of kind of english with you want to use US or UK for my is good video.
Rock can be bent?
Yes. Here is a small example from a piece of granite core that demonstrates the concept of "elastic rebound" in rock: ruclips.net/video/HPRLrk7UFbQ/видео.html
How about tsunami generated by collapse sea?
You're talking about landslide tsunami?
Subduction zone mega quake
Awas Tsunami di awal tahun 2020 pusat gempa tenggara P.Bangka jadi tsunami laut utara jawa tinggi gelombang 40m dan jangkuan kerusakan 1.8 km.dari Singapura hingga jawa dan kanan kirinya.
Japan's quake was so powerful it not only moved the entire country of Japan cm's, it also fucked with Earth's rotation. Extending the day by 0.2 seconds. From a scientific pov, that's crazy
Right effect, wrong amount: it was 0.0000018 seconds (1.8 microseconds). Still crazy it was enough to measure though.
If we count all the earthquakes that had occurred since the earth formed, that could probably add up to days 🤯
The energy released by the 2011 Tohoku earthquake in Japan was around 9,320 gigatons or the equivalent of 9,320,000 megatons of TNT, 600 million times the energy of the Hiroshima bomb explosion and the energy released by the 2004 Aceh earthquake was around 9,600 gigatons, equivalent to 9,600,000 megatons or 640 million times the energy of the Hiroshima bomb. Honestly, it's hard for me to imagine
Free x
pusat gempa kedalaman pantai zona gerakan lempeng bumi lebih 23 cm dari lempeng indo-aris
W3
Hi makasih banyak bukti bumi udah naming
The japan earthquake was 9.1 not 9.0!!!
Anyone here after the California major earthquakes and tsunami
Gempa mozila dan suzi tahun 2012 silam 7,1 dan 6,8 2,200 korban tewas 2,4500 rumah rusak
The sea receded first.
Generaly that Seven outer planets that generate the natural disaster on earth, likes Tide wave, heatwave, Sonic boom/big explosion, mount eruption, earthquake, tornado, hurricane or ect.
The single effective way to lessen the danger earthquake and mount eruption is to connect Makkah with Antartic, Tuamoto with Artic, and poles itself through Atlantic with magnetics materials. This Last link also can lessen the danger tornados and hurricane and at the same time yield giant energi from the Earth truthfully is the nature dynamo of big electrics. Doing reduction the danger by using the atomic bomb explosion and or injection of water into the Earth is irrational and useless
BMKG sitikom waspadai gerakan sesar siti kotimah waspadah picu gempa bumi
Like palu eq indonesia
Gempa sitikom 7,1 SR tahun 2014
GEMPA puau aris tahun 1809 tsunami akibat sesar puau aris dan patahan lempeng indo-aris akibat longsor dibawah laut ketinggan 27 sentimeter tsunami ketinggan 20 hingga 30 meter rasakan tsunami mozila utara 10 meter nts selatan 0,7 meter india utara 0,9 meter malaysia 10 meter
BMKG mozila dan aris warga harap waspadai gerakan lempeng bumi sesar aktif picu gempa bumi dan Tsunami
ngomong apa ga jelas
Bodoh
I am SO tired of metrics!
So are we with imperials
SOLUTION:
Connect artic to antartic to elimimate tornados.
Magnetic storm is getting bigger
Earthquake is getting bigger until month of Muharram(perihelion) closest distance to the sun
Earth is getting closer to the sun in month of muharram in perihelion
SOLUTION:
An effective way to REDUCE
earthquake and volcanic eruption hazards
is to CONNECT Makkah with Antarctica,
Tuamoto with the Arctic, and the poles themselves
through the Atlantic with paramagnetic material
Mozila pediksi gempa besar magtuido 9,1 Tsunami mahadahsyat akibat suduksi lempeng indo-aris
Gempa puau aris akibat patahan lempeng indo-aris dan eruasia 8,8 SR