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03-29-2014, 10:17 PM
Hey Brian,
guess we just have to be patient until good science posts on Earthwaves are of some interest.
All: Here are some things about the 4.1 aftershock. It is NE of the rest of the aftershocks by a couple of km. So, it can be considered a triggered aftershock (in the past, on Earthwaves, we have called these "far field aftershocks" FFA). Not very far, but outside of the mainshock rupture. Kingdom Suite software ruler says that the WNW-ESE length of Palos Verdes Peninsula is 15 km, about the same distance as the aftershock length. This seems way too long for a M5.1. But, this may be because of the shallow depth: much of the rupture may have been in sedimentary rocks.
Stating the obvious, I'd be a bit concerned if I lived in Los Angeles metro. These quakes are tickling faults capable of catastrophe. As the links say, only 5% or whatever chance of a larger quake, but that might be enough to make sure you don't have a TV over the crib (or whatever).
Chris
guess we just have to be patient until good science posts on Earthwaves are of some interest.
All: Here are some things about the 4.1 aftershock. It is NE of the rest of the aftershocks by a couple of km. So, it can be considered a triggered aftershock (in the past, on Earthwaves, we have called these "far field aftershocks" FFA). Not very far, but outside of the mainshock rupture. Kingdom Suite software ruler says that the WNW-ESE length of Palos Verdes Peninsula is 15 km, about the same distance as the aftershock length. This seems way too long for a M5.1. But, this may be because of the shallow depth: much of the rupture may have been in sedimentary rocks.
Stating the obvious, I'd be a bit concerned if I lived in Los Angeles metro. These quakes are tickling faults capable of catastrophe. As the links say, only 5% or whatever chance of a larger quake, but that might be enough to make sure you don't have a TV over the crib (or whatever).
Chris