But according to the Philippine Institute of Volcanology and Seismology (PHIVOLCS), the 7.2 earthquake may have been caused by a previously undiscovered fault transecting Bohol running ENE-WSW parallel to the island’s northwest coast. This was apparent in the pattern of epicenters of the subsequent aftershocks.
What is the effect of earthquake in Bohol?
The earthquake affected over 1.2 million people, 222 people died (195 in Bohol), 976 were injured and eight people missing . Over 79,000 structures including homes, roads, churches, schools and public buildings were damaged, of which 14,500 were totally destroyed, resulting in over 340,000 displaced people.
When did the earthquake in Bohol happen?
On October 15, 2013 , a 7.2 magnitude earthquake struck Bohol Island in the central Visayas region of the Philippines. The strongest earthquake to hit Bohol in nearly 25 years, it triggered landslides and caused widespread destruction. At least 200 people lost their lives and another 350,000 people were displaced.
What type of tectonic plate movement caused the Bohol earthquake on October 15 2013?
The October 15, 2013 M 7.1 earthquake near the city of Catigbian on Bohol Island, Philippines, occurred as the result of shallow reverse faulting on a moderately inclined fault dipping either to the northwest, or to the southeast.
What are the major causes of earthquake in the Philippines?
Many small-magnitude quakes occur regularly due to the meeting of major tectonic plates in the region. ... A result of these movements: deep ocean trenches, volcanic eruptions, and earthquakes . The tremors usually take place along the boundaries where the plates meet, called “fault lines”.
Is Bohol prone to earthquake?
Most of the earthquake epicenters that plot in Bohol are related to deep focus earthquakes associated with the eastward subduction of the Philippine Sea plate . However, damaging crustal earthquakes in Bohol have also occurred in recent years. These are the 1990 M = 6.8 earthquake and the 1996 M = 5.6 Bohol earthquakes.
What was the worst disaster in Philippine history?
| Rank Storm Deaths | 1 1881 Haiphong typhoon 20,000 | 2 Haiyan/Yolanda 2013 6,241 | 4 Bopha/Pablo 2012 1,901 | 5 Angela Typhoon, 1867 1,800 |
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What happened Bohol?
The 2013 Bohol earthquake occurred on October 15 at 8:12:31 PST in Bohol, an island province located in Central Visayas, Philippines. ... It was the deadliest earthquake in the Philippines in 23 years since the 1990 Luzon earthquake. The energy released by the quake was equivalent to 32 of the bombs dropped in Hiroshima.
Has the Philippines ever had a tsunami?
Tsunamis in the Philippines are rare but could be devastating. In the past, 38 people drowned as a result of a tsunami caused by a magnitude 7.1 earthquake in Mindoro on November 15, 1994. ... Tsunami waves generated by earthquakes from other countries may affect the country as well.
What type of fault caused the 2013 Bohol earthquake?
The North Bohol fault or Inabanga fault is a reverse fault located at Anonang, Inabanga which was found on 15 October 2013 during the Bohol earthquake. According to the Philippine Institute of Volcanology and Seismology, a new fault occurs only once in a century.
Why is the Philippines host to many active faults?
The Philippine Mobile Belt is compressed on the west by the Eurasian Plate and two arms of the Sunda Plate, and on the east by the Philippine Sea Plate. These tectonic plates have compressed and lifted parts of the Philippines causing extensive faulting, primarily on a north–south axis.
What can happen when an earthquake occurs underwater?
If the earthquake occurs in the ocean, it can push up powerful waves, known as tsunamis . ... Earthquakes can also trigger tsunamis by unleashing underwater landslides, which also displace huge amounts of seawater.
Why is it important to know the location of faults?
To understand the risk that different areas of the U.S. face for earthquake hazards, we need to know where faults are and how they behave. We know a fault exists only if it has produced an earthquake or it has left a recognizable mark on the earth’s surface .
What are the 3 main causes of earthquakes?
- Volcanic Eruptions. The main cause of the earthquake is volcanic eruptions.
- Tectonic Movements. The surface of the earth consists of some plates, comprising of the upper mantle. ...
- Geological Faults. ...
- Man-Made. ...
- Minor Causes.
What is the most powerful earthquake in the Philippines?
In 2019, a record of a 6.9 magnitude earthquake occurred in Davao Del Sur province of the Philippines. Within the same year, several earthquakes occurred in Cotabato city with the highest magnitude level of 6.6 in the Philippines.
What is the most destructive earthquake happened in the Philippines?
1968 August 02 Casiguran Earthquake . At 4:19 AM (local time) on August 02, 1968 an earthquake with an intensity of VIII in the Rossi-Forel Intensity Scale rocked the town of Casiguran, Aurora. This was considered the most severe and destructive earthquake experienced in the Philippines during the last 20 years.
