#megaquake — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #megaquake, aggregated by home.social.
-
NHK:Alert for potential mega quake issued, tsunami advisories lifted
"...The Japan Meteorological Agency has issued an alert for a potential mega quake, following the magnitude 7.7 quake on Monday. The agency says residents in seven prefectures should prepare for disaster and listen for any updates.
Officials say there is an increased probability of a mega quake along two deep-sea trenches in the Pacific Ocean.
The alert covers 182 municipalities in the prefectures of Hokkaido, Aomori, Iwate, Miyagi, Fukushima, Ibaraki, and Chiba. ..."
-
Chance of Japan's #NankaiTrough #megaquake raised to 80%: government panel
KYODO NEWS KYODO NEWS - Jan 16, 2025
"The chance of a megaquake occurring in the Nankai Trough within the next 30 years has increased to approximately 80 percent, the government's earthquake investigation panel said Wednesday.
"Recalculations are made every January, taking into account the passage of time. The probability of a magnitude 8 to 9 quake along the trough in the Pacific had previously been estimated at 70 to 80 percent since 2018.
"Noting that M6.0-level quakes have repeatedly occurred in Japan since the temblor on the Noto Peninsula, central Japan, on Jan. 1, 2024, the panel's chairman Naoshi Hirata, professor emeritus at the University of Tokyo, emphasized the need for continued vigilance as active seismic activity will likely continue for a while.
"Such seismic activity has not been observed in Japan before, making 'it difficult to predict when it might subside,' Hirata said.
"Earlier this week, the Japan Meteorological Agency issued its second-ever Nankai Trough Extra Information after an earthquake of magnitude of 6.6 struck southwestern Japan.
"But while the jolting occurred beneath the western edge of the hypothesized epicenter of a Nankai Trough quake, the agency did not issue a special alert as it was not deemed to have immediately raised the risk of a megaquake."
Read more:
https://english.kyodonews.net/news/2025/01/a06f6bcef1d6-chance-of-japans-nankai-trough-megaquake-raised-to-80-govt-panel.html
#RethinkNotRestart #FukushimaIsntOver #WaterIsLife #NoMoreFukushimas #NoMoreChernobyls #StopNucléaire #Nucléaire #EnergiesRenouvelables #AntiAtom #NoNukes #NuclearIsNotCarbonFree #Nucleaire #AtomkraftNeinDanke -
BBC: Japan lifts 'megaquake' warning after one week https://www.bbc.com/news/articles/cp8nyg23z2go #Japan #earthquake #megaquake
-
Japan Issues First ‘Megaquake’ Warning For Nankai Trough After Strong Earthquake Hits Miyazaki [August 8th 2024]
--
https://www.nzherald.co.nz/world/japan-issues-first-megaquake-warning-for-nankai-trough-after-strong-earthquake-hits-miyazaki/FPL7SAYODZGAXC6TGMJEXOC5TE/ <-- shared media article
--
https://earthquakeinsights.substack.com/p/m71-earthquake-strikes-southern-japan <-- shared Earthquake Insights details page
--
#GIS #spatial #mapping #operationalearthquakeforecast #OEP #japan #NankaiTrough #megaquake #earthquake #Miyazaki #risk #hazard #model #modeling #fault #faulting #geology #engineeringgeology #structuralgeology #earthquakehazard #infrastructure #humanimpacts -
Japan issues 1st ‘megaquake advisory.’ What that means #World #Earthquake #Japan #Megaquake #Seismology
https://globalnews.ca/news/10690245/japan-megaquake-advisory//612
-
Hope #Japan's current #megaquake forecast is wrong and the risk level diminishes. Predicting quakes is a pretty imprecise science, bordering on guesswork.
-
I saw a CNA report yesterday re: the recent 7.1-M #earthquake in Japan and I heard them use “omega quake” to refer to Japan issuing a potential 9.0-M #megaquake within the week.
It sounded ominous. ^^;;
I didn't understand the exact context but the news anchor only used it once and it was “mega quake” the rest of the report. So, I don't know why they even said “omega quake”.
Anyway… what this post is really about is the importance of being ready, be it omega #quake or megaquake.
The cause of the 7.1-M quake was that the Philippine plate slipped under another plate, and based on Japan's records, the few times it happened in the past, a megaquake happened within the week because it's near the Nankai Trough. And even after the warning is lifted, people should still be prepared.
The #Philippines itself, like Japan, is situated near these subduction zones. Not only that, we are actually in-between two subduction zones and on top of one!
In other words, and this should be a reminder and a warning for all of us, no matter where you are in the Philippines, we're in a ticking 7.0-M ‒ 9.0-M “quake bomb”. However, unlike Japan, we have very, very few quake resilient buildings and homes, and our rescue network/system are yet to be tested. (In fairness, they've considered a lot of technologies like mesh networking.)
So, like the Japanese people, we Filipinos should prepare ourselves as well. We're too focused on “The West Valley Fault System” (formerly known as the “Marikina Fault Line”) when there are also the Manila Trench (West) and the Philippine Trench (East), not to mention thee Philippine Fault that cuts through the middle of the entire country.
These two trenches can produce between 8.0-M – 9.0-M. Subduction zones are very dangerous. Compare it to The West Valley Fault, where this talk of “The Big One” is always based on, they estimate it can produce up to 7.2-M.
While subduction-based quakes are rare in the Philippines… it doesn't mean we're safe from it. It is when we think we're “safe” that increases injuries and deaths. Prepare for the worst. Be alert. Keep a sound mind, so when disaster strikes, we're not panicking (which is contiguous).
See:
* https://www.cebu.ph.emb-japan.go.jp/itpr_ja/11_000001_00489.html
* https://en.wikipedia.org/wiki/Subduction_tectonics_of_the_Philippines(Attached images from the two links above.)
-
'Megaquake advisory issued, tsunami advisories lifted'
The Japanese Meteorological Agency has issued a megaquake advisory after Thursday's quake, as part of the Nankai Trough Earthquake Extra Information protocol. It has also lifted all tsunami advisories.
-
Breaking #News: #Japan issues first ever #megaquake risk alert following intense 7.1M #earthquake & #tsunami warning: #sismo #quake https://www.bbc.com/news/articles/c9qgv8pg59ro