Lesson 2 Flashcards
____ is 1250 km long, arc parallel strike-slip fault extending NNW parallel to the Philippine archipelago
Philippine fault
the PFZ is comprised of 3 faults namely:
Guinyangan Fault
Masbate fault
Central Leyte fault
location of large major events that have recurrence intervals as short as 65 years
Guinyangan fault
a transition zone characterized by large and medium earthquakes accompanied by unusually large ground rapture with post-seismic deformation and possibly slow-slip components
Masbate Fault
recurrence interval along this zone range from 5-10 years
Masbate Fault
characterized by creep and by medium-sized events usually with clusters of foreshocks that serve as warning to the impending mainshocks
Central Leyte fault
traverses the eastern edge of Masbate parallel to the coastline for a length of 30 km; calculated slip rate of 2 mm/year
Masbate Fault
officially reported to have caused 250,000 deaths of the 750,000 inhabitants
Tangshan, China earthquake (1976)
Magnitude of the Bohol earthquake of October 15, 2013
M7.2
Epicenter of bohol earthquake 2013
Inabanga, Bohol
the _____ on the fault is interpreted to be a result of oblique subduction of the Philippine sea plate beneath the Sunda plate
left-lateral motion
GPS surveys depicted ____ mm/year left lateral motion on the fault
20-30
_____________ is seismically active with several surface-rupturing earthquakes in the past 200 years.
Philippine fault
The PFZ traverses the eastern edge of Masbate parallel to the coastline for a length of
30 km
The calculated slip rate on Masbate island
2mm/year
