Magnitude 9.0 Sumatra-Andaman Islands Earthquake
16
Q
INDIA
Colombo
Northeast Indian Ocean Region
Seismicity 1900 - 2004, M≥6
BAN
H
106
CAINA.
Kolkata
(Calcutta)
Dhaka
MYANMAR
6B4RMA)
Viangchan
Vientiane)
BAY OF
BENCAL
Yangon
(Rangoon)
THAILAND
Krung Thep.
Bangkok)
Chennai
(Madras)
Andaman Is
✓
SRI
LANKA
Hanoi
VIET
AMBODIANA
Anom
Penh
INDIAN
OCEAN
MALAYSIA
Kuala Lumpur
NGAPORE
Singapore
ONESIA
700
LO
O ME
Mudo Ago
SUNCA TRENCH
1200
Koma
Jakarta
Historic Seismicity
Eastern Indian Ocean
1900 - 2004
■ The Indian Plate moves
northeasterly about 60
mm/yr relative to the
Burma Plate, resulting in
oblique convergence
with the Sunda Trench
■ The last major
earthquake in the Sunda
Trench was in
southeastern Sumatra in
1833.
The tsunamis generated
by that quake were
directed southerly,
towards Antarctica.
EXPLANATION
Main Shock
26 December 2004
O Atershocks M 26
Earthquakes M≥6
0-69 km
O 70 - 299
O 300-699
▲
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