Phil Hazard Presentation
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Transcript of Phil Hazard Presentation
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Geohazards in the Philippines
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South Chjna Sea
Philippine Sea
Philippine Archipelago
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South Chjna Sea
Philippine Sea
Philippine Archipelago
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The Philippines generally has a rugged terrain with over 60% of its land consisting of slopes.
Central Cebu
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The country lies along the path of air streams (e.g NE and SW monsoons) and several tropical stroms.
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Philippines: A Geohazard-Prone Country
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Hazards
Geologic Hazard Fault-related / seismic hazards Mass movement Volcanic hazards
Hydrologic Hazard Fluvial / riverine Coastal
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ground rupture ground acceleration liquefaction differential settlement landslides fault creep lateral spread tsunami seiches
Geologic HazardsFault related /
Seismic hazards
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Dalton Pass,Digdig, N. Vizcaya
Imugan Rivernear Digdig, N. Vizcaya
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Awaji Island, Japan(Kobe 1995 earthquake)
Pasig, Philippines
ground rupture ground acceleration liquefaction differential settlement landslides fault creep lateral spread tsunami seiches
Geologic HazardsFault related / Seismic hazards
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ground rupture ground acceleration liquefaction differential settlement landslides fault creep lateral spread tsunami seiches
Geologic HazardsFault related / Seismic hazards
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Baguio Park Hotel
Central Luzon State University Library
San Jose, N. EcijaResidential Bldg.
Umingan, Pangasinan
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ground rupture ground acceleration liquefaction differential settlement landslides fault creep lateral spread tsunami seiches
Geologic HazardsFault related / Seismic hazards
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Dagupan, Pangasinan
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Geologic HazardsMass Movement
Landslides
Fall Topple Slump Slide Spread Flow Complex March 2001
Artist’s perspective of a bridgeto cross slide area
Mahaplag, S. Leyte, August 1999
sliding mass
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Geologic HazardsUUUUUU GGGGGG SSSSSS
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Creep in Mankayan
Mass MovementLandslides
Fall Topple Slump Slide Spread Flow Complex
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Geologic HazardsMass Movement
Landslides
Fall Topple Slump Slide Spread Flow Complex
Cherry Hills Landslide Incident
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August 1999August 1999
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Collapsed section of the Cebu TransCetral Highway
Geologic Hazards
Mass MovementLandslides
Fall Topple Slump Slide Spread Flow Complex
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June 13 , 1991
Geologic HazardsVolcanic Hazards
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July 1994
September 1995
June 1991
Geologic HazardsVolcanic Hazards
ash fall pyroclastic surge lava flow debris flow debris avalanche pyroclastic flow bombs and ballistics lahar lateral blast tsunami volcanic earthquake flooding UUUUUU GGGGGG SSSSSS
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Geologic HazardsVolcanic Hazards
ash fall pyroclastic surge lava flow debris flow debris avalanche pyroclastic flow bombs and ballistics lahar lateral blast tsunami volcanic earthquake flooding
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Lahar flows in Abacan River, Pampanga
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Tilted HouseSan Pedro, Laguna
Geologic Hazards Creep Subsidence Settlement
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Hydrologic HazardsFluvial
scouring bank erosion sedimentation channel erosion
Flooding (overflow) flooding (sheet flow) rill erosion gully erosion
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Sta Barbara, Iloilo
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Hydrologic HazardsCoastal
Coastal erosion flooding storm surge coastal subsidence sea level rise tsunami submarine landslide
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An eroding coast noted in Cavite
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Seawall built along the Cavite coast
Hydrologic HazardsCoastal
Coastal erosion flooding storm surge coastal subsidence sea level rise tsunami submarine landslide
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MGB’s ACTION TO MITIGATE GEOHAZARDS
DAO 2000-28DAO 2000-28Signed 14 March 2000Signed 14 March 2000
Published 08 April 2000Published 08 April 2000
To adequately and comprehensively address and mitigate the possible effects/ impacts of geologic hazards, it is hereby required that, in addition to the requirement for the issuance of an Environmental Compliance Certificate (ECC) as provided for under Presidential Decree No. 1586, Presidential Proclamation No. 2146 and its implementing rules and regulations, all proponents of subdivision development projects, housing projects and other land development and infrastructure projects, private or public, shall undertake an Engineering Geological and Geohazard Assessment.
1. Implementation of DAO 2000-28
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Activities Undertaken in Compliance With DAO 2000-28
Geological Site Scoping
Cavite Coast
C5 near Kalayaan Avenue UUUUUU GGGGGG SSSSSSLLLLLL
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Geological Verification
Activities Undertaken in Compliance with DAO 2000-28
Taytay, Rizal UUUUUU GGGGGG SSSSSSLLLLLL
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Activities Undertaken in Compliance with DAO 2000-28
Geological Review of EGGAR
Submitted to MGB
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MGB’s ACTION TO MITIGATE GEOHAZARDS
2. Conduct of Geohazard Assessment Especially in Areas Already Developed
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MGB’s ACTION TO MITIGATE GEOHAZARDS
Geohazard Assessment
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MGB’s ACTION TO MITIGATE GEOHAZARDS
3.Production of Thematic / Geohazard Maps
3.
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LANDS GEOLOGICAL SURVEY DIVISIONMINES & GEOSCIENCES BUREAU - CO