-0.4
Relative water level, in meters
(Transducer failure)
-0.2
LKT
(Manual readings)
0
CW3
Landers
earthquake (Mw 7.3)
0.2
CH10
(from chart)
Strain, x 10-6,
contraction positive
0.4
POPA borehole
strainmeter
0.3
0.2
0.1
0
Landers earthquake (Mw 7.3)
-0.1
6/22
6/27
7/2
7/7
7/12
7/17
1992
VOLCANO DEFORMATION–
Geodetic Monitoring Techniques
By Daniel Dzurisin
U.S. Geological Survey graphics
7/22