The news are saying its likely the 7 was the main shock and the 6.4 the pre-shock. In terms of ratios that's about right. And the 4s and 5s following are aftershocks. Big earthquakes have LOADs of aftershocks. After the big Tohoku quake in 2011 it felt like the floor never stopped wobbling for days and weeks after.
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Magnitude 7.1, 6.4 earthquakes strike Kumamoto in Kyushu, Japan
- Thread starter ponpo
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~Devil Trigger~
In favor of setting Muslim women on fire
so its official, we can can ...kinda predict earthquakes now? cuz all yesterday i was hearing people say there's more to come.
Or is this just aftershocks...big...aftershocks
Or is this just aftershocks...big...aftershocks
Yesterday was probably the pre-shock. 7.1 (two hours ago) might have been the big one and what's currently going on are the after-shocks (6.0, 5.8 and lots of 3-5).
But as someone else said:
But as someone else said:
Valkerionseven
Member
Aftershocks, can't predict them really just detect them slightly before the main force of the shaking hits. Here in Japan you get an alert on the phone or tv a few seconds before you feel it, 10 or less usually. Generally the more time before you feel it the further away it was.
But yeah they tend to get called preshocks if an even larger one hits.
Getting more quakes and alerts though even now at 4am. Was not that bad for us here, but it was further inland this time. 6- Like others were saying, hopefully Aso stays quiet... went off pretty violently a year or two ago.
Either way kinda weird because it is always wobbling it feels like. Friend and his girlfriend was scared they came over and we were playing video games, tried to go to sleep and like 15 minutes later the most recent one hits @.@ nonstop tonight. No matter how many they have here I guess they still freak even the natives out.
Looks like they were right.
I can't even imagine. I've experienced about four earthquakes in my life, and they were all brief 4~5 ones, and hundreds of km away, so just gentle swaying/rattling for me.
The idea of constant aftershocks is way out there.
They also corrected the 7.1 from almost three hours ago upwards to 7.3 now.
For those intersted: https://en.wikipedia.org/wiki/Japan_Meteorological_Agency_seismic_intensity_scale
Seismic intensity for the larger earthquakes is 6-lower/6-upper here so far.
For those intersted: https://en.wikipedia.org/wiki/Japan_Meteorological_Agency_seismic_intensity_scale
Seismic intensity for the larger earthquakes is 6-lower/6-upper here so far.
Yep, but at least it's Friday/Saturday. Stay safe though.
A 5.5 just hit as well.
Robot Carnival
Member
Kumamoto is a great city, loved it when I was visiting there. some great food there too. hope everybody is OK over there.
lastplayed
Member
No they're still unpredictable. They can make educated guesses based on previous data but that's about it.
It's a sure thing that any big quake will be followed by more quakes, most of the time they're smaller, sometimes they're bigger. The energy released by earthquakes can release stress in some areas, but also increase stress in others, that's what makes them so unpredictable.
Twice in 2011 Christchurch had two big foreshocks followed by a large >6.0 quake about an hour later. It's a horrifying experience, because now any large quake we feel makes you worry than an even bigger one is coming. But most of the time they don't.
Alex Connolly
Member
Has been rocking and rolling since the prequake here in Kirishima. Looks like a bit of a mess up north. Hope the damage and loss of life is kept to a minimum.
NihonTiger90
Member
Mount Aso - a volcano near where the quakes were centered and the most active volcano in Japan - is erupting a little bit right now.
I had a bad feeling about that when those aftershocks all were being centered in and around Aso overnight that it was related to volcanic activity.
Looks like there's been landslides and road/bridge collapses as well.
I had a bad feeling about that when those aftershocks all were being centered in and around Aso overnight that it was related to volcanic activity.
Looks like there's been landslides and road/bridge collapses as well.
Where are you located? Here in Osaka recently we got nothing above 5 (highest was a 3 last night and a 4 a few days ago before the Kumamoto one). I can imagine the alarms going crazy yesterday and today though. And with the sound they make... ugh. Sometimes it's scarier than the quake itself!
NihonTiger90
Member
Yeah. I did a bit more digging, and it looks like that landslide is blocking the main road and rail line between Mount Aso and Kumamoto. Hopefully if there's an emergency up on the mountain, they can get personnel there.
Beautifully Shaped Monsters
Member
Livestream, looks pretty serious to be honest: https://www.youtube.com/watch?v=3lHGMePcDJc
Hip Hop
Member
holy shit, that looks bad.
shira
Member
It's also about duration which is scary as fuck
A thirty-second earthquake generally has a magnitude in the mid-sevens.
A minute-long quake is in the high sevens
A two-minute quake has entered the eights, and a three-minute quake is in the high eights By four minutes, an earthquake has hit magnitude 9.0.
Valkerionseven
Member
Been shaking all morning here in Kagoshima, only got like 4 or so hours of sleep thanks to the construction across the street. Tearing up the basement of an old hospital during tremors not matter how small must be scary.
Hidden One
Member
Did they ever get that Lion back to the Zoo?
teruterubozu
Member
Insane. Stay safe everyone.
It seems like 22 people have died already since the first quake. Dang. And yeah, most people now seem to think that the quake last night was the "main" quake and the ones before it were prequakes. Hopefully the aftershocks aren't too bad...
One of the bigger problems with quakes in Japan isn't that the buildings might collapse during the quake, but that they will catch fire when electricity and gas come back on old buildings.
Also they're showing part of the Kumamoto castle. Holy shit that thing is falling any second now.
One of the bigger problems with quakes in Japan isn't that the buildings might collapse during the quake, but that they will catch fire when electricity and gas come back on old buildings.
Also they're showing part of the Kumamoto castle. Holy shit that thing is falling any second now.
Netherscourge
Banned
Ecuador just got hit by a 7.4 to 7.8 magnitude quake...
https://weather.com/safety/earthquake/news/earthquake-ecuador-april-16-2016
WTF is going on?
https://weather.com/safety/earthquake/news/earthquake-ecuador-april-16-2016
WTF is going on?
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