Magnitude 7.5 - JAVA, INDONESIA
2007 August 08 17:04:58 UTC
- This event has been reviewed by a seismologist.
|Depth||289.2 km (179.7 miles)|
|Distances||110 km (65 miles) ENE of JAKARTA, Java, Indonesia|
115 km (70 miles) N of Bandung, Java, Indonesia
135 km (85 miles) NW of Cirebon, Java, Indonesia
145 km (90 miles) NE of Sukabumi, Java, Indonesia
|Location Uncertainty||horizontal +/- 8 km (5.0 miles); depth +/- 11.2 km (7.0 miles)|
|Parameters||NST=170, Nph=170, Dmin=545.1 km, Rmss=1.18 sec, Gp= 36°,|
M-type=centroid moment magnitude (Mw), Version=7
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The following is a release by the United States Geological Survey, National Earthquake Information Center: An earthquake occurred IN JAVA, INDONESIA, about 100 km (65 miles) E of JAKARTA or about 110 km (70 miles) N of Bandung at 11:04 AM MDT, Aug 8, 2007 (Aug 09 at 12:04 AM local time in Java, Indonesia). 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. Because this earthquake is located about 290 km below the surface of the earth, it will have been felt strongly over a wide area, but is not likely to cause severe damage. We have received reports that the earthquake was felt in much of Java and in parts of Malaysia.
WP 7.4 (GS).
The earthquake of August 8, 2007, occurred at a depth of about 290 km within the lithosphere of the Australia plate, which is subducting beneath the Sunda plate. In this region, the Australia plate moves to the north with respect to the Sunda plate with a velocity of about 58 mm/yr. The Australia plate is thrust beneath the Sunda plate at the Java trench, south of the island of Java, and is subducted to progressively greater depths with distance north of the trench. The subducted lithosphere beneath and north of Java is seismically active to a depth of about 650 km.
Earthquakes that have focal-depths between 70 and 300 km are commonly termed “intermediate-depth” earthquakes, and earthquakes with focal-depths greater than 300 km are termed “deep-focus” earthquakes. Intermediate-depth and deep-focus earthquakes represent deformation within subducted plates, rather than deformation at plate boundaries. Intermediate-depth and deep-focus earthquakes typically cause less damage on the ground surface above their foci than is the case with similar magnitude shallow-focus earthquakes, but large intermediate-depth and deep-focus earthquakes may be felt at great distance from their epicenters.
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