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O ceanography SPECIAL ISSUE ON Undersea Natural Hazards VOLCANIC ERUPTIONS THE OFFICIAL MAGAZINE OF THE OCEANOGRAPHY SOCIETY VOL.27, NO.2, JUNE 2014 TSUNAMIS LANDSLIDES EARTHQUAKES Oceanography
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0.8
0.6
0.4
0.24
5
6
54 56 5854 56 58
54 56 58
2.6
2.2
1.8
1.4
La/S
m
Wt % SiO2
lava blockspumice, 2010
Wt % SiO2
Wt %
MgO
Wt %
K2O
700
500
300
54 56 58
Ba/
Th
-240-260
-300
-340
-400
meters 50 HPD1533
R11
R10R08
R04R02
R01C01
C03
C02
R06
R05
R03
R07R09
Geog. proj.
meters 200 HPD1534
R01R02R03C01 R04
R05 R06R08
R10
R07
R09C02
C03
-1500
-1400
-1300
-1600
Geog. proj.
16°3
5'N
16°3
6'N
16°3
7'N
145°44'E 145°45'E 145°46'E
HP1533
HP1534
145°47'E 145°48'E
-200
-800
-1000
-1200-1400
-400
-400
-600
kilometersGeog. proj.
2a
c
e
g
d
b
f
h
Amp. (m)
Figure 11
LE wave
refractedphase
broadsidephase
500 100 150 200 250
50
-50
0
100
-100
150
200
250
300
350
400
x (km)500 100 150 200 250
x (km)500 100 150 200 250
x (km)
y (k
m)
time = 7 min. time = 55min.time = 16min.
Oceanography
S P E C I A L I S SU E O N
Undersea Natural Hazards
VO LC A N I CE RU P T I O N S
T H E O F F I C I A L M A G A Z I N E O F T H E O C E A N O G R A P H Y S O C I E T Y
V O L . 2 7 , N O. 2 , J U N E 2 0 1 4
T SU N A M I S
LAN
DSL
IDE
S
Year 1 − Deployed
40°N
41°N
42°N
43°N
44°N
45°N
46°N
47°N
48°N
49°N
40°N
41°N
42°N
43°N
44°N
45°N
46°N
47°N
48°N
49°N
Year 2 − Deployed
Proposed Sites for Year 4
132°W 130°W 128°W 126°W 124°W 122°W132°W 130°W 128°W 126°W 124°W
Year 3 − Deployed
−4000
−3000
−2000
−1000
0
met
ers
E A RT H Q UA K E S
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Vo
l.27
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