Media Information

 
 
 
Collection:
NASA Earth Observatory Collection
Title:
Earthquake Raises Reefs in the Solomon Islands
Description:
The massive magnitude 8.1 earthquake that jolted the Solomon Islands on April 1, 2007, permanently changed the shoreline on Ranongga Island, west of the epicenter. New beach was added to the western shore of the island when the earthquake lifted the island as much as three meters, exposing near-shore coral reefs, reported the Australian Broadcasting Corporation. The freshly exposed reefs are visible beneath a veil of clouds in the top image, acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite on April 11, 2007. The lower image, taken on March 31, 2006, shows the island’s former shoreline. Lush tropical vegetation is red in these images, while the exposed reef is dark grey. Water is black and clouds range from light blue lavender to white. The exposed reef adds tens of meters to most of the shoreline, and more than 150 meters at the tip of the spit of land shown in this image.

The earthquake occurred along the plate boundary, where the Australia/Woodlark/S olomon Sea plates slide beneath the denser Pacific plate. Friction between the sinking (subducting) plates and the overriding Pacific plate led to the large earthquake on April 1, said the United States Geological Survey (USGS) summary" title="http://earthquake.usgs.gov/eqcenter/eqinthenews/2007/us2007aqbk/#summary">summary">http://earthquake.u…of the earthquake. Large earthquakes are common in the region, though the section of the plate that produced the April 1 earthquake had not caused any quakes of magnitude 7 or larger since the early 20th century, said the USGS.

NASA image created by Jesse Allen, using data provided courtesy of the NASA/GSFC/MITI/ERSDA C/JAROS, and U.S./Japan ASTER Science Team.
Satellite - Sensor:
Terra- ASTER
facet_what:
ASTER
facet_what:
Advanced Spaceborne Thermal Emission and Reflection Radiometer
facet_what:
Terra
facet_where:
Japan
facet_where:
Australia
facet_where:
Solomon Sea
facet_where:
Solomon Islands
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
United States of America
facet_where:
Jet Propulsion Laboratory (JPL)
facet_when:
20th century
facet_when:
March 31, 2006
facet_when:
April 1, 2007
facet_when:
April 11, 2007
facet_when_year:
2007
facet_when_year:
2006
UID:
SPD-ETOBS-14215
original url:

Earthquake Raises Reefs in the Solomon Islands