Geoscience Reference
In-Depth Information
FIGURE I.1
Map of Samoa tsunami source. SOURCE: http://news.bbc.co.uk/2/hi/8281616.stm; with per-
mission from the BBC.
TABLE I.1
Timeline for Key Events During Samoa Tsunami
Arrival time
(HR:MIN:SEC)
received by
USGS QDDS
system
Elapsed time
(HR:MIN:SEC)
What
17:48:10
0:00:00
Earthquake origin time
17:48:37
0:00:27
P ARRIVAL at AFI (179km)
17:48:58
0:00:48
S ARRIVAL at AFI (179km)
17:49:50
0:01:40
Strong shaking abates at AFI
17:56:24
0:08:14
PTWC M7.1 Hypocenter
17:57:15
0:09:05
WC/ATWC M7.9 Hypocenter
18:03:15
0:15:05
WC/ATWC Tsunami Information Statement (message states 18:02 release)
18:05:10
0:17:00
PTWC Expanding Regional Warning (message states 18:04 release and M7.9)
18:07:15
0:19:05
NEIC M7.9 Hypocenter
SOURCE: Committee staff.
