M 6.9 - PHILIPPINE ISLANDS REGION

Monday, March 3, 2008 at 14:11:13 UTC
Location: 13.4°N 125.7°E Depth: 19km

Summary

Estimated Population Exposed to Earthquake Shaking

Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Potential Structure Damage
Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Resistant	Vulnerable
X	0	Extreme	V. Heavy	V. Heavy
IX	0	Violent	Heavy	V. Heavy
VIII	0	Severe	Moderate/Heavy	Heavy
VII	0	Very Strong	Moderate	Moderate/Heavy
VI	0	Strong	Light	Moderate
V	2,107k	Moderate	V. Light	Light
IV	9,172k*	Light	None	None
II-III	--*	Weak	None	None
I	--*	Not Felt	None	None

*Estimated exposure only includes population within the map area.

Population Exposure

Population per ˜1 square km from Landscan 2005

Selected City Exposure

MMI	City	Population
V	Kabadiangan	3k
V	Pangpang	2k
V	San Policarpio	3k
V	Gamay	9k
V	Salvacion	2k
V	Palapag	8k
V	Laoang	16k
IV	Legaspi Port	143k
IV	Panalanoy	189k
IV	Naga	147k
IV	Mansilingan	454k

Shaking Intensity

MMI

Users should consider the preliminary nature of this information and check for updates as additional data becomes available. Population exposure estimates are NOT a direct estimate of earthquake damage; comparable shaking will result in significantly lower losses in regions with well built structures than in regions with vulnerable structures. Overall, structures in this region are a mix of vulnerable and resistant construction. A magnitude 8.0 earthquake struck the Mindanao, Philippines region on August 16, 1976 (UTC), with estimated population exposures of 510,000 at intensity IX or greater and 3.6 million at intensity VIII, resulting in 8,000 deaths. Recent earthquakes in this area have also triggered landslide and liquefaction hazards that have contributed to losses.

PAGER results are generally available on the Internet within 30 minutes of the earthquake's occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following an earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER exposure estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.

Maps

[Population | Shakemap]

Map of MMI contours plotted over population per ˜1 square km (see gray scale bar on top of map). The regions of integer MMI values are separated by the thick contour lines and labeled with Roman numerals. The total population exposure to a given MMI value is obtained by summing the population between the thick contour lines. This total is shown in population exposure table.

Map of shaking intensity. This map shows the estimated MMI as a continuous color scale. The ground shaking estimates can be obtained from http://earthquake.usgs.gov/shakemap/.

Exposure

Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Potential Structure Damage
Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Resistant	Vulnerable
X	0	Extreme	V. Heavy	V. Heavy
IX	0	Violent	Heavy	V. Heavy
VIII	0	Severe	Moderate/Heavy	Heavy
VII	0	Very Strong	Moderate	Moderate/Heavy
VI	0	Strong	Light	Moderate
V	2,107k	Moderate	V. Light	Light
IV	9,172k*	Light	None	None
II-III	--*	Weak	None	None
I	--*	Not Felt	None	None

*Estimated exposure only includes population within the map area.

Table showing population exposed to different estimated Modified Mercalli Intensity (MMI) levels and the possible damage at different intensity levels for resistant and vulnerable structures. MMI describes the severity of an earthquake in terms of its effect on humans and structures and is a rough measure of the amount of shaking at a given location. Unlike earthquake magnitude, intensity varies with distance from the fault, and is influenced by the depth of the earthquake and the types of soils in the shaken region. Population outside the map bounds are not included in the totals.

Cities

MMI	City	Population
V	Kabadiangan	3k
V	Pangpang	2k
V	San Policarpio	3k
V	Gamay	9k
V	Salvacion	2k
V	Palapag	8k
V	Laoang	16k
V	Pambuhan	10k
V	Kabatoan	2k
V	Cagamutan	2k
V	Bobon	4k
V	Alugan	2k
V	Vigo	2k
V	Anito	2k
V	Dapdap	2k
V	Mapanas	3k
V	Dolores	9k
V	Potong	2k
V	Maquiualo	4k
V	Bantayan	3k
V	Mondragon	5k
V	Nenita	2k
V	Lapinig	3k
V	Arteche	5k
V	Bugko	3k
V	Catarman	47k
V	Oras	9k
V	Dao	2k
V	Las Navas	3k
V	San Eduardo	2k
V	Abuyog	3k
V	Cabcab	2k
V	Capul	4k
V	Calbayog	67k
V	Caramoran	4k
V	Catubig	4k
V	Tarangnan	2k
V	Jubasan	2k
V	Buhatan	2k
V	Boton	2k
V	San Policarpo	5k
V	Can-Avid	5k
V	Tubli	2k
V	Victoria	2k
V	Jipapad	3k
V	Malajog	2k
V	Pangdan	2k
V	San Joaquin	4k
V	Pina	3k
V	Manambrag	2k
V	Malaga	2k
V	Sabang	3k
V	Gigmoto	3k
V	Biri	2k
V	Lope de Vega	2k
V	Allen	7k
V	Tinambacan	4k
V	Silvino Lobos	2k
V	Carriedo	2k
V	Santa Margarita	4k
V	Sulat	4k
V	Santa Cruz	2k
V	Rizal	2k
V	Barcelona	3k
V	Gubat	13k
V	Calolbon	5k
V	San Julian	3k
V	Sugod	2k
V	Mantang	2k
V	Pandan	5k
V	Bato	2k
V	Taft	4k
V	Sorsogon	82k
V	Virac	15k
V	Lalauigan	2k
V	Cabugao	2k
V	Catbalogan	68k
V	Quezon	2k
V	Santo Nino	2k
V	Jiabong	4k
V	Erenas	2k
V	Cervantes	2k
V	Bagacay	3k
V	Silanga	2k
V	Cabucgayan	2k
V	Bulan	28k
V	Polange	2k
V	Gabao	2k
V	Maagnas	3k
V	Bunga	3k
V	Calatagan	7k
V	Maypangdan	2k
V	Balagui	2k
V	Casiguran	8k
V	Ogod	2k
V	Butag	2k
V	Biliran	4k
V	Aguada	2k
V	San Jose de Buan	2k
V	Viga	4k
V	Irosin	20k
V	Apud	2k
V	Caditaan	3k
V	Rapu-Rapu	4k
V	Otavi	2k
V	Donsol	6k
V	Panganiban	3k
V	Cagmanaba	2k
V	Balud	2k
V	Presentacion	4k
V	Borongan	16k
V	Viriato	2k
V	Manito	3k
V	Castilla	2k
V	Tabaco	57k
V	Almeria	2k
V	Juban	4k
V	Badian	2k
V	Calabanga	26k
V	Rizal	7k
V	Santa Magdalena	3k
V	Balete	8k
V	Calape	2k
V	Buenavista	2k
V	Capuy	2k
V	Basud	2k
V	Monbon	3k
V	Wright	4k
V	Dancalan	2k
V	Buyo	3k
V	Maydolong	5k
V	Lavezares	4k
IV	Motiong	2k
IV	Palanit	3k
IV	Placer	5k
IV	Bascaran	3k
IV	Balatan	4k
IV	Anislag	4k
IV	Barayong	2k
IV	Gandara	3k
IV	San Vicente	2k
IV	Bulusan	6k
IV	Llorente	7k
IV	Balading	2k
IV	Alegria	5k
IV	Baybay	2k
IV	Macalaya	3k
IV	Pilar	8k
IV	Villahermosa	2k
IV	Cotmon	2k
IV	Bacon	5k
IV	Babatngon	6k
IV	Pantao	6k
IV	Hernani	2k
IV	Cumadcad	5k
IV	Balangkayan	3k
IV	Villareal	3k
IV	Bombon	4k
IV	Banag	2k
IV	Villaba	3k
IV	Basey	7k
IV	Bariw	2k
IV	Bara	2k
IV	Cabiguan	2k
IV	Ipil	3k
IV	Matnog	6k
IV	Malilipot	19k
IV	Libog	11k
IV	Giporlos	5k
IV	Gibgos	2k
IV	Balugo	6k
IV	Kawit	5k
IV	Abucay	2k
IV	Hagdan	3k
IV	Antipolo	4k
IV	Matlang	5k
IV	Guijalo	2k
IV	Banquerohan	9k
IV	Ginabuyan	2k
IV	Inangatan	3k
IV	Bigaa	14k
IV	Cabay	2k
IV	Legaspi Port	143k
IV	Bakhawan	2k
IV	Jovellar	3k
IV	Albuera	4k
IV	Guirang	2k
IV	Baligang	5k
IV	Tiwi	16k
IV	Daraga	6k
IV	Tagas	15k
IV	Barugo	6k
IV	Balangiga	5k
IV	Bacacay	14k
IV	Liberty	2k
IV	Estancia	3k
IV	Kabac	4k
IV	Palompon	12k
IV	Guruyan	2k
IV	Patao	5k
IV	Caramoan	3k
IV	Polangui	12k
IV	Ormoc	92k
IV	Libertad	4k
IV	Guiwanon	2k
IV	Dalupaon	3k
IV	Magarao	15k
IV	Lantangan	3k
IV	Baao	19k
IV	Bantayan	18k
IV	Dulag	10k
IV	Nabua	25k
IV	Libon	11k
IV	Buhi	30k
IV	Isabel	8k
IV	Pio Duran	13k
IV	Panalanoy	189k
IV	Culaba	6k
IV	Medellin	11k
IV	Bunga	6k
IV	Maya	7k
IV	San Vicente	3k
IV	Hilotongan	2k
IV	San Roque	4k
IV	San Fernando	6k
IV	Daram	3k
IV	Guiuan	11k
IV	Daanbantayan	13k
IV	Tinago	4k
IV	Mauraro	3k
IV	Botigues	2k
IV	Cataingan	7k
IV	Cabagnan	2k
IV	Manguiring	3k
IV	Fabrica	3k
IV	Basud	2k
IV	Guindapunan	2k
IV	Iriga	94k
IV	Bitoon	4k
IV	Castillo	4k
IV	Ponso	4k
IV	Doong	2k
IV	Antipolo	2k
IV	Himensulan	2k
IV	Santa Justina	5k
IV	Lagonoy	7k
IV	Consuegra	3k
IV	Gabi	2k
IV	Tagbubunga	2k
IV	Bislig	2k
IV	San Miguel	3k
IV	Santa Teresita	2k
IV	Antonio Luna	2k
IV	Butazon	3k
IV	Lipayran	6k
IV	Tinaan	5k
IV	Canaman	3k
IV	Palo	17k
IV	Kampokpok	5k
IV	Naval	12k
IV	Garchitorena	4k
IV	Tugbong	2k
IV	Agos	2k
IV	Batuan	2k
IV	Alangalang	8k
IV	Kabuynan	2k
IV	Tanauan	16k
IV	Dugcal	4k
IV	Buang	2k
IV	Okoy	3k
IV	Dimasalang	3k
IV	Aroroy	3k
IV	Bogacay	2k
IV	Ayugan	2k
IV	Naga	147k
IV	Tabontabon	2k
IV	Ocampo	2k
IV	Tabango	5k
IV	Anoling	2k
IV	Consuelo	4k
IV	Silion	4k
IV	Agupit	7k
IV	Mercedes	16k
IV	Puro	5k
IV	Tigbao	3k
IV	Buracan	2k
IV	Himaao	3k
IV	Luklukan	4k
IV	Jamorawon	3k
IV	Camaligan	5k
IV	Iraya	2k
IV	Busing	2k
IV	Pili	23k
IV	Tambo	2k
IV	Canomoy	2k
IV	Caranan	7k
IV	Bula	13k
IV	Masbate	47k
IV	Masarauag	3k
IV	Maravilla	2k
IV	Cabusao	2k
IV	Bato	16k
IV	Bacolod	2k
IV	Caraycaray	3k
IV	Capucnasan	2k
IV	Santa Rita	4k
IV	Buenavista	3k
IV	Caridad	3k
IV	Ligao	10k
IV	Gainza	2k
IV	Herrera	2k
IV	General MacArthur	4k
IV	Panique	4k
IV	Talisay	4k
IV	Tigaon	12k
IV	Goa	20k
IV	Tuburan	3k
IV	Bonga	2k
IV	Batang	3k
IV	Kilim	3k
IV	Carigara	17k
IV	Julita	2k
IV	Burabud	2k
IV	Caraycayon	3k
IV	Gatbo	2k
IV	Asturias	7k
IV	Esperanza	5k
IV	San Agustin	4k
IV	Palestina	4k
IV	Cabacungan	3k
IV	Palsong	4k
IV	Palanas	2k
IV	Uson	4k
IV	Hilantagaan	3k
IV	Talisayan	2k
IV	Caibiran	6k
IV	Tinawagan	2k
IV	Cadlan	4k
IV	Armenia	3k
IV	Mambulo	6k
IV	Cabitan	3k
IV	Atop-atop	2k
IV	Hagnaya	3k
IV	Bolo	2k
IV	Lantangan	2k
IV	Buyo	2k
IV	Gumaus	2k
IV	Hobo	3k
IV	San Pascual	5k
IV	Umabay	3k
IV	Claveria	6k
IV	Inapatan	2k
IV	Bateria	3k
IV	Tindog Norte	3k
IV	Enrique B. Magalona	19k
IV	Union	4k
IV	Capoocan	8k
IV	Buga	3k
IV	Daet	78k
IV	Dumangas	8k
IV	San Fernando	6k
IV	Antipolo	5k
IV	Jaro	7k
IV	Talisay	65k
IV	Basud	5k
IV	Buluang	5k
IV	Binonga	83k
IV	Burauen	14k
IV	Jose Panganiban	21k
IV	Talisay	7k
IV	Kananga	7k
IV	La Paz	4k
IV	Guinticgan	7k
IV	Valencia	3k
IV	Sagay	72k
IV	Liloan	3k
IV	Estancia	11k
IV	Roxas City	102k
IV	Bulanon	8k
IV	Baybay	17k
IV	Sipocot	12k
IV	Vinzons	13k
IV	Alicante	8k
IV	Abuyog	15k
IV	Vito	6k
IV	Bogo	23k
IV	Manapla	34k
IV	Ajuy	8k
IV	Eustaquio Lopez	14k
IV	Labo	18k
IV	Toboso	13k
IV	Carmen	21k
IV	Paraiso	30k
IV	Victorias City	86k
IV	Escalante	39k
IV	Cadiz Viejo	129k
IV	Mansilingan	454k
IV	Taloc	20k
IV	Murcia	17k
IV	Ualog	60k

Table of MMI estimates and populations for settlements falling within the map boundaries. The settlement name, location, and population are obtained from the freely-available GeoNames geographical database.

Downloads

Details

Magnitude	6.9
Max MMI	V
Date-Time	Monday, March 3, 2008 at 14:11:13 UTC
Location	13.353°N, 125.670°E
Depth	18.5 km (11.5 miles)
Event ID	US2008PDBS
Version	2