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Abstract
On April 1, 2007, a destructive earthquake (Mw 8.1) and tsunami struck the central Solomon Islands arc in the southwestern Pacific Ocean. The earthquake had a thrust-fault focal mechanism and occurred at shallow depth (between 15 km and 25 km) beneath the island arc. The combined effects of the earthquake and tsunami caused dozens of fatalities and thousands remain without shelter. We present a preliminary analysis of the Mw-8.1 earthquake and resulting tsunami. Multichannel seismic-reflection data collected during 1984 show the geologic structure of the arc's frontal prism within the earthquake's rupture zone. Modeling tsunami-wave propagation indicates that some of the islands are so close to the earthquake epicenter that they were hard hit by tsunami waves as soon as 5 min. after shaking began, allowing people scant time to react.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Preliminary analysis of the earthquake (MW 8.1) and tsunami of April 1, 2007, in the Solomon Islands, southwestern Pacific Ocean |
| Series title | Science of Tsunami Hazards |
| Volume | 26 |
| Issue | 1 |
| Year Published | 2007 |
| Language | English |
| Publisher | The Tsunami Society |
| Contributing office(s) | Coastal and Marine Geology Program, Pacific Coastal and Marine Science Center |
| Description | 16 p. |
| First page | 3 |
| Last page | 18 |
| Country | Solomon Islands |
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