-0.6
Relative water level, in meters
11/13
M4.1
11/22
M4.8
11/30
M4.8
-0.4
12/04
M4.0
CW3
-0.2
12/31
M4.8
0
LKT
0.2
SF
Microstrain, contraction positive
0.4
0.4
11/13
M4.1
0.3
11/22
M4.8
POPA
borehole
strainmeter
0.2
11/30
M4.8
0.1
12/04
M4.0
0
-0.1
7
12
17
22
NOVEMBER
27
2
1997
7
12/31
M4.8
12
17
22
DECEMBER
27
1
VOLCANO DEFORMATION–
Geodetic Monitoring Techniques
By Daniel Dzurisin
U.S. Geological Survey graphics
6
JAN
1998