3 ms·
Loma Prieta was preceded by two 5.x foreshocks within a year.
by baggy_trough 4y ago
Loma Prieta was preceded by two 5.x foreshocks within a year.
- deleted 4y ago[deleted]
- Sakos 4y agoOne in June, one in August, then Loma Proeta in October. Is seasonal weather ever a relevant factor for quakes?
- baggy_trough 4y agoSeismologists believe not.
- jofer 4y agoPut simply, no. The details are messier because groundwater flow very much does affect earthquakes (poroelasticity), but by and large, seasons don't affect groundwater flow significantly at the depths involved. E.g. wet vs dry weather doesn't matter. But on the other hand, a lake filling up or draining can, especially in terms of triggering very small earthquakes.
- MPSimmons 4y agoNot at the scale of quakes like this. Frost quakes are a thing, but very localized: https://www.accuweather.com/en/winter-weather/what-is-a-frost-quake-and-where-do-they-occur/670762 https://www.accuweather.com/en/winter-weather/what-is-a-fros...