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Everyone in the Seattle region is thinking about earthquakes since we just felt the 4.3 quake on Sunday! https://www.seattletimes.com/seattle-news/environment/

Everyone in the Seattle region is thinking about earthquakes since we just felt the 4.3 quake on Sunday! https://www.seattletimes.com/seattle-news/environment/small-earthquake-felt-in-puget-sound-region/ https://www.seattletimes.com/seattle-news/environment/small-...

nvy 3y ago
Felt it up here in Victoria, too.
AISnakeOil 3y ago
Didn't feel a thing.
psunavy03 3y ago
Didn't feel a thing.
kogok89 3y ago
Didn't feel a thing (2) in North Seattle.
JALTU 3y ago
Aftershock of Taylor Swift concert?
DoreenMichele 3y ago
I can't readily find a source, but there was another one some weeks back of around 4.0. I can't decide if these are good news making a big quake less likely or foreshadowing of a big quake coming.
- mnky9800n 3y ago
  There is little evidence that earthquakes come as precursors to larger earthquakes. Most papers reporting such things have selection bias since they are written after the big earthquake occurred.
  - TheOtherHobbes 3y ago
    It's more the other way around. A large earthquake is often followed by a swarm of aftershocks, some of which can cause significant damage. The media failed to report that the recent quake in Morocco was followed by tens of smaller quakes over the next few weeks, all in a small-ish area that had been quake-free. (In recent memory, at least.)
  - sparrowInHand 3y ago
    A fault is a series of hooks, nooking into the oppossing plate. One of them giving way, in a small event, gives off its energy partially to the surroundings (the quake) - the rest- stays as additional pressure on another rockformation. There is a lot of research on people not taking possible disasters serious: https://en.wikipedia.org/wiki/Normalcy_bias https://en.wikipedia.org/wiki/Normalcy_bias Its understandable, but in the end also just noise for those who do and want to discuss mitigiation strategies or statistics. The urge to conjur up security by repeating doubt mighte be huge, but like all prayer, should be kept to oneself.
    - mnky9800n 3y ago
      i don't really think this is a fair conceptual model for a fault nor for how an earthquake nucleates progresses and then ends. it doesn't really account for plastic deformation, fluids, the interface media (a fault has more than just two rocks touching each other, there is typically some amount of ground up particles, etc that sits at hte interface). there are faults that move aseismically (e.g., the subduction zone in mexico) that do not produce earthquakes at all. faults are a rather complex system that isn't really just hooks connected across an interface. i guess this description could be considered an asperity.
abnercoimbre 3y ago
Definitely felt it for a couple seconds lying still. If you were driving or moving about you might've missed it.
klardotsh 3y ago
Yeah, I'm in Kingston so felt that one plenty. It was a weird one: less rumble, more a sudden jolt that shook the floor. Really weird.

nvy 3y ago

Felt it up here in Victoria, too.

AISnakeOil 3y ago

Didn't feel a thing.

psunavy03 3y ago

Didn't feel a thing.

kogok89 3y ago

Didn't feel a thing (2) in North Seattle.

JALTU 3y ago

Aftershock of Taylor Swift concert?

DoreenMichele 3y ago

I can't readily find a source, but there was another one some weeks back of around 4.0. I can't decide if these are good news making a big quake less likely or foreshadowing of a big quake coming.

mnky9800n 3y ago
There is little evidence that earthquakes come as precursors to larger earthquakes. Most papers reporting such things have selection bias since they are written after the big earthquake occurred.
- TheOtherHobbes 3y ago
  It's more the other way around. A large earthquake is often followed by a swarm of aftershocks, some of which can cause significant damage. The media failed to report that the recent quake in Morocco was followed by tens of smaller quakes over the next few weeks, all in a small-ish area that had been quake-free. (In recent memory, at least.)
- sparrowInHand 3y ago
  A fault is a series of hooks, nooking into the oppossing plate. One of them giving way, in a small event, gives off its energy partially to the surroundings (the quake) - the rest- stays as additional pressure on another rockformation. There is a lot of research on people not taking possible disasters serious: https://en.wikipedia.org/wiki/Normalcy_bias https://en.wikipedia.org/wiki/Normalcy_bias Its understandable, but in the end also just noise for those who do and want to discuss mitigiation strategies or statistics. The urge to conjur up security by repeating doubt mighte be huge, but like all prayer, should be kept to oneself.
  - mnky9800n 3y ago
    i don't really think this is a fair conceptual model for a fault nor for how an earthquake nucleates progresses and then ends. it doesn't really account for plastic deformation, fluids, the interface media (a fault has more than just two rocks touching each other, there is typically some amount of ground up particles, etc that sits at hte interface). there are faults that move aseismically (e.g., the subduction zone in mexico) that do not produce earthquakes at all. faults are a rather complex system that isn't really just hooks connected across an interface. i guess this description could be considered an asperity.

abnercoimbre 3y ago

Definitely felt it for a couple seconds lying still. If you were driving or moving about you might've missed it.

klardotsh 3y ago

Yeah, I'm in Kingston so felt that one plenty. It was a weird one: less rumble, more a sudden jolt that shook the floor. Really weird.