The 1994 Mindoro earthquake occurred at 03:15:30 PST on November 15 near Mindoro, Philippines. It had a moment magnitude of 7.1 and a maximum Rossi–Forel of VII (Very strong tremor). It is associated with a 35-kilometer-long (22 mi) ground rupture, called the Aglubang River fault.[5] Seventy eight people were reported dead,[6] and 7,566 houses were damaged. The earthquake generated a tsunami and landslides on the Verde Island.
 | |
| UTC time | 1994-11-14 19:15:30 |
|---|---|
| ISC event | 141635 |
| USGS-ANSS | ComCat |
| Local date | November 15, 1994 |
| Local time | 03:15 PST |
| Magnitude | 7.1 Mw[1] |
| Depth | 31.5 km (19.6 mi)[1] |
| Epicenter | 13°31′30″N 121°04′01″E / 13.525°N 121.067°E[1] |
| Type | Strike-slip[2] |
| Areas affected | Philippines |
| Max. intensity | RFS VII (Very strong tremor)[1] |
| Tsunami | Yes |
| Casualties | 78 killed, 225–340 injured[3][4] |
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Earthquake
The epicenter of this earthquake was located in the Verde Island Passage, a strait separating Luzon and Mindoro. The focal mechanism showed predominantly right-lateral strike-slip faulting.[7] The released seismic moment was about 5.12×1019 Nm.[8]
Surface faulting
The Aglubang River fault, which shows a right-lateral strike-slip sense of movement, extends from Malaylay Island in the north of Oriental Mindoro to Alcate, Victoria in the south. Measurements along the rupture reveal a maximum horizontal displacement of 4 meters (13 ft) and a maximum vertical displacement of 1.9 meters (6 ft 3 in).[5][9]
Tsunami
The earthquake generated a tsunami, which affected Mindoro, the Verde Island, the Baco Islands,[10] and Luzon. Some concrete structures also suffered moderate damage in the tsunami. In Baco Islands, the vertical run-up reached 8.5 meters (28 ft). The tsunami was also recorded in Lobo.[11] The tsunami was larger than expected considering the strike-slip movement of the earthquake.[2]
See also
References
Further reading
- Imamura, Fumihiko; Synolakis, Costas E.; Gica, Edison; Titov, Vasily; Listanco, Eddie; Lee, Ho Jun (1995). "Field survey of the 1994 Mindoro Island, Philippines tsunami". Pure and Applied Geophysics. 144 (3–4). Springer Science and Business Media LLC: 875–890. Bibcode:1995PApGe.144..875I. doi:10.1007/bf00874399. ISSN 0033-4553. S2CID 186215580.
External links
- The International Seismological Centre has a bibliography and/or authoritative data for this event.