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] |
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.
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]
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]
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]