Disaster Ppt

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In what province in the Bicol region is Mount Bulusan found?



What is a Disaster?

Either a natural or man-made hazard which has come to fruition, resulting in an event of substantial extent causing significant physical damage or destruction, loss of life, or drastic change to the natural environment. Came from the Middle French desastre and that from Old Italian disastro meaning bad star.

What is a Hazard?

Refers to the potential occurrence, in a specific period of time and geographic area, of a natural phenomenon that may adversely affect human life, property or activity to the extent of causing a disaster

What is Vulnerability?

Structural or physical vulnerability is the extent to which a structure is likely to be damaged or disrupted by a hazard event. Human vulnerability is the relative lack of a person or community to anticipate, cope with, resist and recover from the impact of a hazard.

Establishing the connection

Hazards + Vulnerability = Disaster A natural hazard will hence never result in a natural disaster in areas without vulnerability e.g. strong earthquakes in uninhabited areas.


RP is vulnerable to almost all types ofnatural hazards because of its

Classification of a Disaster

Natural disasters is a consequence when a natural hazard affects humans and/or built environment. Human-made/Man-made disasters these are disasters caused by chemical or industrial accidents, environmental pollution, transport accidents and political unrest, since they are the direct result of human action

A more modern and social understanding of disasters, however, views this distinction as artificial since most disasters result from the actions or inaction of people and their corresponding political, social and economic structures.


The Philippine Archipelago occupies the western ring of the Pacific Ocean (Western Segment of the Pacific Ring of Fire), a most active part of the earth that is characterized by an ocean-encircling belt of active

Why does Philippines have many volcanoes?

The Philippines sits on a unique tectonic setting ideal to volcano formation. The archipelago is surrounded by subducting plates as manifested by the trenches that are related to volcano formation Volcanoes are classified as active, potentially active, or inactive

Classification of volcanoes

Active erupted within historical times (within the last 600 years), accounts of these eruptions were documented by man; erupted within the last 10,000 years based on analyses of datable materials. Potentially active morphologically younglooking but with no historical records of eruption. Inactive no record of eruptions


Also known as quake, tremor or temblor. Is the result of a sudden release of energy in the earths crust that creates seismic waves. The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time


Device which records earthquake is a seismograph Moment magnitude is determined using the Richter scale with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas Intensity of shaking is measured on the modified Mercalli scale


An earthquakes point of initial rupture is called focus or hypocenter The point at ground level directly above the hypocenter is ____________.

RP DISASTER RISK PROFILEAs an archipelago with 7,107 islands, the threat of tsunami affecting the countrys coastal areas is not far-fetched.


Japanese term meaning harbor wave or tidal wave is a series of water waves (called tsunami wave train) caused by the displacement of a large volume of body water, usually an ocean, but can occur in large lakes. Some meteorological conditions, such as deep depressions that cause tropical cyclones, can generate a storm surge, or meteotsunami, which can raise tides several meters above normal levels


Often referred to as twister is a violent, dangerous, rotating column of air that is in contact with both the surface of the earth and the cumulonimbus cloud, or in rare cases the base of a cumulus cloud. Tornadoes come in many shapes and sizes, but typically in form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust.

Disasters, whether natural or humanmade, affect everyone, especially the poor, children, women and elderly, who have the least capability to deal with disasters.

RP DISASTER RISK PROFILEBrgy. Guinsaugon, S. Leyte Feb. 17, 2006 Calapan City Dec. 2005 Pakistan Earthquake Oct. 2005

From 1994 to 2003, some 2.5 billion* people were affected by natural disasters alone worldwide, which is an increase of 60% over the past decade. More than 478,000* people were killed during this period.Infanta, Quezon Nov. 2004 Tsunami Dec. 2004 Southern Leyte Dec. 2003

RP DISASTER RISK PROFILEPakistan Earthquake Oct. 2005 Hurricane Katrina Aug. 2005

Floods and Earthquakes are the deadliest accounting for more than half of the casualties.Bucayao River, Calapan City Dec. 2005 Luzon Earthquake Jul. 1990

RP DISASTER RISK PROFILEFor natural hazards, almost 38% of natural disasters occurs in ASIA; almost 60% of the worlds victims of natural disasters come from ASIA, and around the 50% of financial loss is also from ASIA.


Emerging Global Concerns: Terrorism, Climate Change/Global Warming Avian Influenza


Yearly, the country experiences an average of twenty (20) tropical cyclones a year, half of these are destructive, including other weather hazards such as thunderstorm, heavy rainfall, southeast and northwest monsoons, cold front and ITCZ; is a host to 300 volcanoes, twenty-two (22) of which are active, together with active faults and trenches that are potential sources of earthquakes.


The country has also its episodes of human-induced disasters such as urban fires, air & sea mishaps, and complex emergency, mostly in Southern Philippines because of the secessionist movement, coupled with its vulnerability to floods and other natural hazards.

RP DISASTER RISK PROFILEBetween 1970 to 2005, the Philippines incurred an average annual direct damage of PHP 61 Billion due to disasters. This is equivalent to more than 0.5% of the national GDP per year. The indirect and secondary impacts of these disasters further increase this cost.


In 2004, the country experienced twenty-five (25) weather disturbances, four of these occurring successively in November and first week of December, which brought massive landslides and flooding in the towns of Real, Infanta and General Nakar, Quezon Province, Dingalan, Aurora and Gabaldon, Nueva Ecija


On February 17, 2006, another landslide hit Southern Leyte that almost wiped out the entire 480 hectares in Brgy. Guinsaugon, one of the 16 villages of the town of St. Bernard, leaving in its wake 154 dead, 28 injured, 410 registered survivors and 968 still missing


The sinking of MT Solar I at Luzaran Point, Guimaras Island last August 11, 2006 has resulted in the spillage of 200,000 liters of industrial fuel oil, the largest oil spill in the country affecting 3 provinces and 38 municipalities with 3,357 families or 16,785 persons affected population

Typhoon, Hurricane & Tropical Cyclone

The terms "hurricane" and "typhoon" are regionally specific names for a strong "tropical cyclone". A tropical cyclone is the generic term for a non-frontal synoptic scale low-pressure system over tropical or subtropical waters with organized convection (i.e. thunderstorm activity) and definite cyclonic surface wind circulation.

Typhoon, Hurricane, Tropical cyclone

Tropical cyclones with maximum sustained surface winds of less than 17 m/s (34 kt, 39 mph) are called "tropical depressions" (This is not to be confused with the condition mid-latitude people get during a long, cold and grey winter wishing they could be closer to the equator ;-)). Once the tropical cyclone reaches winds of at least 17 m/s (34 kt, 39 mph) they are typically called a "tropical storm" and assigned a name.

Typhoon, Hurricane, Tropical cyclone

If winds reach 33 m/s (64 kt, 74 mph)), then they are called: "hurricane" (the North Atlantic Ocean, the Northeast Pacific Ocean east of the dateline, or the South Pacific Ocean east of 160E) "typhoon" (the Northwest Pacific Ocean west of the dateline) "severe tropical cyclone" (the Southwest Pacific Ocean west of 160E or Southeast Indian Ocean east of 90E) "severe cyclonic storm" (the North Indian Ocean) "tropical cyclone" (the Southwest Indian Ocean)

Typhoon, Hurricane, Tropical cyclone

"Super-typhoon" is a term utilized by the U.S. Joint Typhoon Warning Center for typhoons that reach maximum sustained 1-minute surface winds of at least 65 m/s (130 kt, 150 mph). This is the equivalent of a strong Saffir-Simpson category 4 or category 5 hurricane in the Atlantic basin or a category 5 severe tropical cyclone in the Australian basin. "Major hurricane" is a term utilized by the National Hurricane Center for hurricanes that reach maximum sustained 1-minute surface winds of at least 50 m/s (96 kt, 111 mph). This is the equivalent of