by jadegil6 » Sun Nov 03, 2013 8:32 pm
The Bohol earthquake which struck on October 15, 2013 at 8:13 AM was the deadliest earthquake in the Philippines in 23 years. The toll now stands at 222 dead, 8 missing, and 976 people injured. In addition to the human toll, more than 70 thousand structures in Bohol and Cebu were damaged or destroyed.
Initially it was thought that the epicenter was near Baliliphan, Bohol. Later it was thought it was 2 kilometres (1.2 mi) east of Carmen, Bohol. But now, according to PHIVOLCS, the earthquake may have been caused by a previously undiscovered fault line (blind fault) transecting Bohol running ENE-WSW parallel to the island's northwest coast. This became apparent in the pattern of epicenters of the subsequent aftershocks. On October 20, 2013, a team of state volcanologists had discovered the theorized new fault (now named North Bohol Fault) in Inabanga, a town 20 kilometres (12 mi) north of the epicenter. Vertical displacement, as much 3.0 m (10 feet), was noted in the landscape of the town. According to experts, the fault may be as much as 100 kilometres (62 mi) long. It was also noted that Bohol gained around 500 meters more of shoreline due to the quake. Surface ruptures ranging from 0.10 metres (3.9 in) to as high as 5 metres (16 ft) in vertical displacements were exposed in Barangay Anonang in Inabanga, Bohol. At one point where the fault intercepted a creek, there is now a waterfall that is over 8 feet high that did not exist before the quake.
In Bohol and Cebu combined, a more than 3.2 million people were affected by the quake. Out of the total number of affected, more than 368 thousand people were displaced. By far the most casualties and damages occurred in Bohol where 208 of the 222 deaths occurred. The town of Loon, had the largest number of fatalities. Approximately 67,400 residential houses in Bohol were damaged or destroyed, with the towns of Inabanga, Loon, Tubigon, Carmen, and Calape among the worst affected.