What do earthquake swarms indicate?

Related questions

1. Are there more earthquakes now than in the past?
2. Is it normal to have earthquakes everyday?
3. What would a 7.0 earthquake feel like?
4. How many aftershocks are in Anchorage today?
5. Why are aftershocks more dangerous than mainshock?
6. How many aftershocks are normal?
7. How strong is a 9.0 earthquake?
8. Do aftershocks get stronger?
9. Why are aftershocks so dangerous?
10. How far can a 4.4 earthquake be felt?

Tags

1. #swarms
2. #swarm
3. #earthquakes
4. #itself
5. #local
6. #order
7. #relatively
8. #weeks
9. #short
10. #length
11. #striking
12. #varies
13. #experiences
14. #define
15. #where
16. #period
17. #sequences
18. #months
19. #earthquake
20. #events