[url]https://earthquake.usgs.gov/earthquakes/eventpage/us7000m9g4/executive[/url] or https://earthquake.usgs.gov/earthquakes/eventpage/us7000m9g4/executive 

M 7.4 - 18 km SSW of Hualien City, Taiwan

• 2024-04-02 23:58:11 (UTC)
• 23.819°N 121.562°E
• 34.8 km depth

DJ, In front of the Taiwan Pacific (east) coast

M 6.2 - 136 km ENE of Saipan, Northern Mariana Islands

• 2024-04-02 09:54:09 (UTC)
• 15.816°N 146.866°E
• 10.0 km depth

So is the M6.2 quake related to the Taiwan M7,4 quake ? One aftershock of M6,4-lots of M5,7...

There was a tsunami warning but that already is lifted...

[url]https://en.wikipedia.org/wiki/Lists_of_earthquakes#Largest_earthquakes_by_magnitude[/url] or https://en.wikipedia.org/wiki/Lists_of_earthquakes#Largest_earthquakes_by_magnitude There may have been several M9+ earthquakes in history-most but not all-in the Pacific "ring of fire"...

[url]https://en.wikipedia.org/wiki/1960_Valdivia_earthquake#[/url] or https://en.wikipedia.org/wiki/1960_Valdivia_earthquake# ;

The 1960 Valdivia earthquake and tsunami (Spanish: Terremoto de Valdivia) or the Great Chilean earthquake (Gran terremoto de Chile) on 22 May 1960 was the most powerful earthquake ever recorded. Various studies have placed it at 9.4–9.6 on the moment magnitude scale.^[1] It occurred in the afternoon (19:11 GMT, 15:11 local time), and lasted for approximately 10 minutes. The resulting tsunamis affected southern Chile, Hawaii, Japan, the Philippines, eastern New Zealand, southeast Australia, and the Aleutian Islands.

DJ, Can the Taiwan quake result in an even larger quake in the West Pacific.....? 

[url]https://en.wikipedia.org/wiki/Richter_scale[/url] or https://en.wikipedia.org/wiki/Richter_scale ;

Seismologist Susan Hough has suggested that a magnitude 10 quake may represent a very approximate upper limit for what the Earth's tectonic zones are capable of, which would be the result of the largest known continuous belt of faults rupturing together (along the Pacific coast of the Americas).^[17]

 A research at the Tohoku University in Japan found that a magnitude 10 earthquake was theoretically possible if a combined 3,000 kilometres (1,900 mi) of faults from the Japan Trench to the Kuril–Kamchatka Trench ruptured together and moved by 60 metres (200 ft) (or if a similar large-scale rupture occurred elsewhere). 

Such an earthquake would cause ground motions for up to an hour, with tsunamis hitting shores while the ground is still shaking, and if this kind of earthquake occurred, it would probably be a 1-in-10,000-year event.^[18]

DJ, It is impossible to be prepared to be for "once-in a 10,000 years" events...It may be even hard to get a realistic view on that kind of events...

[url]https://earthquake.usgs.gov/earthquakes/eventpage/us7000m9sq/executive[/url] or https://earthquake.usgs.gov/earthquakes/eventpage/us7000m9sq/executive 

M 6.1 - 83 km E of Minami-Sōma, Japan

• 2024-04-04 03:16:31 (UTC)
• 37.720°N 141.924°E
• 40.1 km depth

DJ A follow-up quake after the M7+ quake in Taiwan ? 

-Taiwan/China quake killed 10, lots of people missing

-Taiwan refusing help from PRC, accepting aid from EU, US, Japan...

Maybe another note-the Taiwan quake shows preparations do limit damage...It may never be perfect...Lots of missing may be hit by landslides in a mountain-nature reserve...

A glich at [url]https://www.ventusky.com/?p=-35;37;2&l=wave&t=20240410/0000[/url] or https://www.ventusky.com/?p=-35;37;2&l=wave&t=20240410/0000 did become a story of its own. 

[url]https://halturnerradioshow.com/index.php/en/component/content/article/unexplained-anomaly-emanating-from-antarctica-reported-80-foot-waves-moving-north?catid=17&Itemid=220[/url] or https://halturnerradioshow.com/index.php/en/component/content/article/unexplained-anomaly-emanating-from-antarctica-reported-80-foot-waves-moving-north?catid=17&Itemid=220 with a link to [url]https://www.youtube.com/watch?v=TnmvjOHeJW8[/url] or https://www.youtube.com/watch?v=TnmvjOHeJW8 ;

Something Massive Left ANTARCTICIA During The Solar Eclipse! Caught on RADAR!

 [url]https://www.youtube.com/watch?v=Tnb5_lVxP2M[/url] or https://www.youtube.com/watch?v=Tnb5_lVxP2M a buoy acting strange...

In2thinair does NOT believe the wave-info can be correct...And when you follow Ventusky [url]https://www.ventusky.com/?p=-35;37;2&l=wave&t=20240411/0900[/url] or https://www.ventusky.com/?p=-35;37;2&l=wave&t=20240411/0900 still has the -same wave height- wave...

Gone [url]https://www.ventusky.com/?p=-35;37;2&l=wave&t=20240411/1200[/url] or https://www.ventusky.com/?p=-35;37;2&l=wave&t=20240411/1200 a few hours later...

In2thinair speculating Antarctic iceberg causing a tsunami...Hal Turner going for a meteorite...both knowing there was no earthquake in the region...

---------

DJ-At the moment in2thinair made his video the "crazy wave" in the South Atlantic on Ventusky was ongoing...

[url]https://climatereanalyzer.org/[/url] or https://climatereanalyzer.org/ 

[url]https://earth.nullschool.net/[/url] or https://earth.nullschool.net/ 

[url]https://forum.arctic-sea-ice.net/index.php/board,13.0.html?PHPSESSID=6d5e144e0a92914b6850b4f4ee2d6292[/url] or https://forum.arctic-sea-ice.net/index.php/board,13.0.html?PHPSESSID=6d5e144e0a92914b6850b4f4ee2d6292 

offer good tools to correct a glitch...

----------------

We are NOT ready at all for once in a hundred-years events...Once-in a million year events may come as a total surprise...

In the past I did discuss/question the maximum for earthquakes...Maybe M9+ quakes may be "expected" every 10-15 years ? Climate collapse means less landice pushing down land in Antarctica, Greenland, Canada...does mean seismic risks are increasing...

The Hal Turner/In2thinair "crazy wave" could be explained by a massive methane release...only I would not expect that in Antarctica that much...A glacier-collapse also could cause "crazy waves"...

The "ventusky-glitch-wave" did stay the same height for to long...did form in a unclear way...

[url]https://en.wikipedia.org/wiki/2011_T%C5%8Dhoku_earthquake_and_tsunami#Scientific_and_research_response[/url] or https://en.wikipedia.org/wiki/2011_T%C5%8Dhoku_earthquake_and_tsunami#Scientific_and_research_response ;

Seismologists anticipated a very large quake would strike in the same place as the 1923 Great Kantō earthquake—in the Sagami Trough, southwest of Tokyo.^[389][390] The Japanese government had tracked plate movements since 1976 in preparation for the so-called Tokai earthquake, predicted to take place in that region.^[391]

 However, occurring as it did 373 km (232 mi) north east of Tokyo, the Tōhoku earthquake came as a surprise to seismologists. 

While the Japan Trench was known for creating large quakes, it had not been expected to generate quakes above an 8.0 magnitude.^[390][391]

 The Headquarters for Earthquake Research Promotion set up by the Japanese government then reassessed the long-term risk of trench-type earthquakes around Japan, and it was announced in November 2011 that research on the 869 Sanriku earthquake indicated that a similar earthquake with a magnitude of M_w 8.4–9.0 would take place off the Pacific coast of northeastern Japan, on average, every 600 years. 

Also, a tsunami-earthquake with a tsunami magnitude scales (Mt) between 8.6 and 9.0 (Similar to the 1896 Sanriku earthquake, the Mt for the 2011 Tōhoku earthquake was 9.1–9.4) had a 30% chance to occur within 30 years

DJ The march 11-2011 M9/M9.1 earthquake in Japan was NOT expected...with very good seismologists doing the best research...We simply can NOT know all there is to know...

[url]https://en.wikipedia.org/wiki/Megathrust_earthquake#Occurrence_and_characteristics[/url] or https://en.wikipedia.org/wiki/Megathrust_earthquake#Occurrence_and_characteristics ;

In the Himalayan region, where the Indian tectonic plate subducts under the Eurasian Plate, the largest recorded earthquake was the 1950 Assam–Tibet earthquake, at magnitude 8.7. It is estimated that earthquakes with magnitude 9.0 or larger are expected to occur at an interval of every 800 years, with the highest boundary being a magnitude 10, though this is not considered physically possible. Therefore, the largest possible earthquake in the region is a magnitude 9.7, assuming a single rupture of the whole Himalayan arc and assuming standard scaling law, which implies an average slip of 50 m.^[21]

A megathrust earthquake could occur in the Lesser Antilles subduction zone, with a maximum magnitude of 9.3, or potentially even 10.3 through recent evaluations, a value not considered impossible.^[22]

The largest recorded megathrust earthquake was the 1960 Valdivia earthquake, estimated magnitude 9.5, centered off the coast of Chile along the Peru-Chile Trench, where the Nazca Plate subducts under the South American Plate.^[23] This megathrust region has regularly generated extremely large earthquakes.

Geologists estimate that the largest possible earthquakes could have magnitudes of 10 to 11, most likely caused by a combined rupture of the Japan Trench and Kuril-Kamchatka Trench, or individually the Aleutian Trench or Peru–Chile Trench.^[24][25][26] Another possible area could be the Lesser Antilles subduction zone.^[22]

A study reported in 2016 found that the largest megathrust quakes are associated with downgoing slabs with the shallowest dip, so-called flat slab subduction.^[27]

DJ, the largest know earthquakes in Europe the last 2,000 years very likely stayed under magnitude 7...However could an earthquake of M9,7-Himalaya, 10,3 Lesser Antilles or even M11 East Asia result in seismic events in Europe M7+ ? 

[url]https://en.wikipedia.org/wiki/Richter_scale[/url] or https://en.wikipedia.org/wiki/Richter_scale 

M9-M9.9 supposed to be 1 to 3 times per 100 years;

Near total destruction – severe damage or collapse to all buildings. Heavy damage and shaking extend to distant locations. Permanent changes in ground topography.

-

Seismologist Susan Hough has suggested that a magnitude 10 quake may represent a very approximate upper limit for what the Earth's tectonic zones are capable of, which would be the result of the largest known continuous belt of faults rupturing together (along the Pacific coast of the Americas).^[17] 

A research at the Tohoku University in Japan found that a magnitude 10 earthquake was theoretically possible if a combined 3,000 kilometres (1,900 mi) of faults from the Japan Trench to the Kuril–Kamchatka Trench ruptured together and moved by 60 metres (200 ft) (or if a similar large-scale rupture occurred elsewhere). 

Such an earthquake would cause ground motions for up to an hour, with tsunamis hitting shores while the ground is still shaking, and if this kind of earthquake occurred, it would probably be a 1-in-10,000-year event.^[18]

DJ...there are technical/tectonic limits...very likely...So M11+ may only be possible with an asteroide hitting Earth [url]https://en.wikipedia.org/wiki/Chicxulub_crater#Effects[/url] or https://en.wikipedia.org/wiki/Chicxulub_crater#Effects (in this story estimated M9 to M11....[url]https://www.quora.com/Is-it-true-that-the-magnitude-11-13-Chicxulub-earthquake-was-able-to-sink-the-continental-surface[/url] or https://www.quora.com/Is-it-true-that-the-magnitude-11-13-Chicxulub-earthquake-was-able-to-sink-the-continental-surface ...

My idea of an M11 quake-effect would be parts of land sinking into the Ocean-with new land/Ocean floor rising up...Tsunami's going all over the planet, also affecting polar ice etc. Mountains collapsing-rivers flowing in new directions...

The Taiwan M7,4 quake showed we may be able to prepare for up to M8 quakes quite well...Building codes could see very limited collapse of houses. Deaths may be of landslides in area's less protected...Very likely "risk management" could limit damage further to be able to deal with even M8,5-M9 quakes...

Here in NL dykes are supposed to deal with flood-risk than are supposed to show once in 25,000 years...