12 ephemerides
11 interns digging (to bury seismometers!)
10 seconds leaping
9 strain components
8 plates a-drifting
7 InSAR fringes
6 shakes alerting
5 gold choke rings
4 satellites
3 components
2 body waves
1 GPS antenna in a tree
12 ephemerides
11 interns digging (to bury seismometers!)
10 seconds leaping
9 strain components
8 plates a-drifting
7 InSAR fringes
6 shakes alerting
5 gold choke rings
4 satellites
3 components
2 body waves
1 GPS antenna in a tree