Magnitude 6.9 - MOLUCCA SEA
2007 July 26 05:40:16 UTC
- This event has been reviewed by a seismologist.
|Depth||25 km (15.5 miles) set by location program|
|Distances||225 km (140 miles) N of Ternate, Moluccas, Indonesia|
330 km (205 miles) ENE of Manado, Sulawesi, Indonesia
1485 km (920 miles) SSE of MANILA, Philippines
2505 km (1560 miles) ENE of JAKARTA, Java, Indonesia
|Location Uncertainty||horizontal +/- 5.6 km (3.5 miles); depth fixed by location program|
|Parameters||NST=173, Nph=173, Dmin=514.3 km, Rmss=1.02 sec, Gp= 25°,|
M-type=centroid moment magnitude (Mw), Version=R
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The following is a release by the United States Geological Survey, National Earthquake Information Center: An earthquake occurred 220 km (135 miles) N of Ternate, Moluccas, Indonesia 330 km (205 miles) ENE of Manado, Sulawesi, Indonesia at 11:40 PM MDT yesterday, Jul 25, 2007 (Jul 26 at 1:40 PM local time in Molucca Sea). The magnitude and location may be revised when additional data and further analysis results are available. No reports of damage or casualties have been received at this time; however, this earthquake may have caused damage due to its location and size.
Several injuries, and damage to tens of houses in North Maluku Province. Felt (V) at Ternate; (IV) at Manado and Tobelo; (III) at Labuha. Also felt at Davao, Philippines.
The earthquake occurred 85 km off the coast of Pulau Ternate, Indonesia, in the Molucca Sea. The tectonic setting of this region of the world is extremely complex, due to the interaction of the major Eurasian, Philippine, and Australian plates, and the presence of several micro plates whose movements are influenced by the larger plates. This shallow thrust event was caused by the release of compressional stress built in the Sunda plate, one of several micro plates in the region. Compressional stresses are generated as the Birds Head plate subducts beneath the Sunda plate at a rate of 106.3 mm/yr.
Recent devastating earthquakes have occurred in the immediate region: On May 26, 2003 a magnitude 7.0 earthquake occurred 150 km southeast-east of the recent earthquake, killing at least one, injuring 7, and destroying 28 houses throughout the island of Morotai. On March 05, 2002 a magnitude 7.5 earthquake occurred 500 km northwest of the recent earthquake, and killed eight people, and injured at least 630.
The country of Indonesia has suffered several recent deadly earthquakes, including the May 26, 2006 magnitude 6.3 Java event, that killed nearly 6,000, and injured 38,000. On March 28, 2005 a magnitude 8.6 earthquake occurred off the western coast of northern Sumatra. This event caused at least 1000 fatalities on the Island of Nias, and triggered a tsunami reaching the countries of Sri Lanka and India. Indonesia also suffered the devastating 2004 Sumatra-Andaman magnitude 9.1 earthquake, the third largest earthquake to occur since 1900, that killed close to 300,000 people.
Scientific & Technical Information
The earthquake locations and magnitudes cited in NOAA tsunami statements and bulletins are preliminary and are superseded by USGS locations and magnitudes computed using more extensive data sets.
General Tsunami Information
- Preliminary Earthquake Report
- U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver