Magnitude 6.3 - JAVA, INDONESIA
2006 May 26 22:53:58 UTC
- This event has been reviewed by a seismologist.
|Depth||10 km (6.2 miles) set by location program|
|Distances||20 km (10 miles) SSE of Yogyakarta, Java, Indonesia|
110 km (70 miles) S of Semarang, Java, Indonesia
150 km (95 miles) SE of Pekalongan, Java, Indonesia
455 km (285 miles) ESE of JAKARTA, Java, Indonesia
|Location Uncertainty||horizontal +/- 7.5 km (4.7 miles); depth fixed by location program|
|Parameters||NST=130, Nph=130, Dmin=220.2 km, Rmss=1.4 sec, Gp= 43°,|
M-type=teleseismic moment magnitude (Mw), Version=9
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At least 5,749 people were killed, 38,568 were injured and as many as 600,000 people were displaced in the Bantul-Yogyakarta area. More than 127,000 houses were destroyed and an additional 451,000 were damaged in the area, with the total loss estimated at approximately 3.1 billion US dollars. Felt (IX) at Bantul and Klaten, (VIII) at Sleman and Yogyakarta, (V) at Surakarta, (IV) at Salatiga and Blitar and (II) at Surabaya. Felt in much of Java. Also felt at Denpasar, Bali.
The tectonics of Java are dominated by the subduction of the Australia plate north-northeastward beneath the Sunda plate with a relative velocity of about 6 cm/year. The Australia plate dips north-northeastward from the Java trench, attaining depths of 100-200 km beneath the island of Java, and depths of 600 km north of the island. The earthquake of 26 May 2006 occurred at shallow depth in the overriding Sunda plate well above the dipping Australia plate.
From presently available data, we do not know if there is a direct link between the May 26 earthquake and the ongoing eruption of the volcano Merapi which is several tens of kilometers to the north. The occurrence of shallow-focus earthquakes near volcanoes is not unusual worldwide. Sometimes the association of earthquakes and volcanic eruptions is so close in space and time that it is clear that the earthquakes are triggered by the magmatic processes that are causing the eruption. In the cases of many earthquakes that occur in the general vicinity of volcanoes, however, there are not obvious links to volcanic eruptions. In these cases, the general spatial association of volcanoes and earthquakes is probably due to both seismic and magmatic phenomena being localized by a broader tectonic process.
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.
NOAA Tsunami Bulletins for this Earthquake
No Bulletins have been issued at this time.
General Tsunami Information
- Preliminary Earthquake Report
- U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver