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Lesson 3: Active Fault Lines in the Philippines
Transcript of Lesson 3: Active Fault Lines in the Philippines
The Marikina Fault Line
- PHILVOCS said that it is the most active fault line in the Philippines.It has not moved for 500 yrs. To produce high intensity earthquake.Located at east of Metro Manila.It was renamed to West Valley fault by the director of PHILVOCS Raymundo Punong Bayan.Seismologists said that if this fault moved it can make the Taal Volcano Erupt.
Central Philippine Fault
Marikina Valley Fault/West Valley Fault Line
Western Philippine Fault
Eastern Philippine Fault
Southern of Mindanao Fault
Magnitudes & Intensities of Earthquakes
Tsunami in English is equivalent to “Seismic Se waves”
When two oceanic plates meet and collide with another, energy is stored between them.
Damages Caused by Earthquakes
What to do before and during earthquakes
Active Fault Lines in the Philippines
Entire Ilocos Norte
Agusan Del Norte
Agusan Del Sur
Davao Del Norte
Active Fault Lines
in the Philippines
The Central Philippines Fault Zone
- It is a transition zone with slow slip and creep activity.This is found to be the site and sources of fault creep activity,slow slip event and great archipelago.According to the Studies of Willis and Allen,the PFZ is comparable to San Andreas Fault in California.During the year 1990, the earthquake that destroyed Central Luzon and Baguio was due to the movement of Central Philippine Fault.
Seismograph - device that measures the strength of an earthquake.
The Ritcher Scale
It is the best known logarithmic scale
used in measuring the magnitude of earthquakes.
The Mercalli Scale
Expresses the intensity ofa n earthquake as felt in a given location or region in values ranging from I to XII.
List of earthquakes that has a magnitude above 5 in the Ritcher scale.
-Moro Gulf [6.6]
Earthquake and Tsunami Formation
Check the stability of hanging objects.
Breakable or harmful objects should be stored properly.
Familiarize yourself with the exit routes.
Know where the fire extinguishers, first aid kits and phones are located.
Prepare an emergency kit.
Conduct and participate in regular earthquake drills.
When you are inside a building stay there.
If possible, quickly open the door for exit.
Duck under a sturdy table, to protect your head.
Stay away from glass windows and heavy objects.
Be alert and be aware of falling objects.
If outside, move to an open area.
Stay away from trees or concrete structures.
Move away from steep slopes.
If you are in the shore move to a higher ground.
If you are in a moving vehicle STOP and get out.
-is a storm system characterized by counter clockwise rotating air mass around a central part called core that has a low pressure.The central part of the typhoon could be big as 370 km. Because of the low pressure core, wind flows inward, creating an updraft of rising air, that upon cooling produces high winds and forms heavy rains. Tropical Cyclone is called typhoon or hurricane, depending on what region the storm occurs.
related with the Mandarin word,Tai Feng, which means 'great or big wind'.The majority of tropical cyclone formation forms between June and November and is at a minimum between December and May.
One source of tropical cyclone formation is the Intertropical Convergence Zone located around the equator.
Where do tropical cyclones originate
Troposphere- lowest layer of the Earth's atmosphere. It is where the weather phenomena is primarily involved.
The boundary between the troposphere and the stratosphere.
beaneath the tropopause is the "river of air", that zooms along at the speed of 400 km/hr