LESSONS LEARNED FROM THE ERUPTION OF INDONESIA’S MOUNT SINABUNG February 3, 2014
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Transcript of LESSONS LEARNED FROM THE ERUPTION OF INDONESIA’S MOUNT SINABUNG February 3, 2014
LESSONS LEARNED FROM THE ERUPTION OF
INDONESIA’S MOUNT SINABUNG
February 3, 2014
Walter Hays, Global Alliance for
Disaster Reduction, Vienna, Virginia, USA
NATURAL HAZARDS THAT PLACE INDONESIA’S NATURAL HAZARDS THAT PLACE INDONESIA’S COMMUNITIES AT RISK COMMUNITIES AT RISK
NATURAL HAZARDS THAT PLACE INDONESIA’S NATURAL HAZARDS THAT PLACE INDONESIA’S COMMUNITIES AT RISK COMMUNITIES AT RISK
EARTHQUAKES
CYCLONES
FLOODS
LANDSLIDES
VOLCANIC ERUPTIONS
GLOBAL CLIMATE CHANGE
ENACT AND IMPLEMENT POLICIES HAVING HIGH BENEFIT/COST FOR COMMUNITY RESILIENCE
ENACT AND IMPLEMENT POLICIES HAVING HIGH BENEFIT/COST FOR COMMUNITY RESILIENCE
GOAL: DISASTER GOAL: DISASTER RESILIENCERESILIENCE
GOAL: DISASTER GOAL: DISASTER RESILIENCERESILIENCE
Scalding ash up to 700 degrees C raced down the slope in just two to three
minutes, engulfing Sukameriah, a village close
to the volcano's crater.
15 DEATHS—THE FIRST TIME THIS VOLCANOE’S ERUPTION HAS CAUSED
DEATHS
All the deaths and at least 3 injuries were in Sukameriah
VOLCANOES
PART OF THE PACIFIC “RING OF FIRE,” INDONESIA HAS 127 ACTIVE VOLCANOES AS A RESULT OF COMPLEX SUBDUCTION
OF THE INDO-AUSTRALIA AND EURASIATECTONIC PLATES
542 OF THE 1,500 ACTIVE VOLCANOES ARE LOCATED IN “RING OF FIRE”
542 OF THE 1,500 ACTIVE VOLCANOES ARE LOCATED IN “RING OF FIRE”
VOLCANO HAZARDS CAN HAVE FAR REACHING IMPACTS
• VERTICAL PLUME (can affect jet aircraft)
• ASH AND TEPHRA
• LATERAL BLAST
• PYROCLASTIC CLOUDS, BURSTS, AND FLOWS
VOLCANO HAZARDS CAN HAVE FAR REACHING IMPACTS
• LAVA FLOWS
• LAHARS (can bury villages)
• EARTHQUAKES (related to movement of lava)
• “VOLCANIC WINTER” (causing famine and mass extinctions)
LATERAL BLAST
VOLCANIC
ERUPTIONS
VOLCANIC
ERUPTIONS
PYROCLASTIC FLOWS
FLYING DEBRIS
VOLCANIC ASH
LAVA FLOWS
LAHARS
TOXIC GASES
CAUSES OF RISK
CAUSES OF RISK
CASE HISTORIESCASE HISTORIES
INDONESIA’SINDONESIA’S
COMMUNITIESCOMMUNITIES
INDONESIA’SINDONESIA’S
COMMUNITIESCOMMUNITIESDATA BASES DATA BASES AND INFORMATIONAND INFORMATIONDATA BASES DATA BASES AND INFORMATIONAND INFORMATION
HAZARDS: GROUND SHAKING GROUND FAILURE SURFACE FAULTING TECTONIC DEFORMATION TSUNAMI RUN UP AFTERSHOCKS
•VOLCANO HAZARDS•PEOPLE & BLDGS. •VULNERABILITY•LOCATION
VOLCANO RISK VOLCANO RISK
RISK
ACCEPTABLE RISK
UNACCEPTABLE RISK
GOAL: VOLCANO GOAL: VOLCANO DISASTER RESILIENCEDISASTER RESILIENCE
• PREPAREDNESS•PROTECTION•EARLY WARNING•EMERGENCY RESPONSE•RECOVERY and RECONSTRUCTION
POLICY OPTIONSPOLICY OPTIONS
INDONESIA’S NOTABLE ERUPTIONS
• Lake Toba: Supervolcanic eruption 74,000 years ago that caused 6 years of volcanic winter
• Mount Tambora: One of the most violent eruptions in recorded history that occurred in 1815.
• Krakatau: Notable for its global effects in 1883
Since AD 1000, Kelut has erupted more than 30 times,
with the largest eruption having a Volcanic
Explosivity Index (VEI) of 5
Thousands have died in these eruptions
SUDDEN CHANGE IN ACTIVITYSince December 26, 2004 when the M9.3 Banda Ache earthquake and
tsunami occurred, volcanic activity increased and some of Indonesia’s dormant volcanoes
became active again.
INDONESIA’S MOUNT MERAPI ERUPTED ON MAY 15, 2006
• Mount Merapi, a stratovolcano, emitted lava, debris, and a pyroclastic flow (or cloud) on May 15.
MAY 15, 2006 ERUPTION
• School children wore masks to counter adverse health effects of breathing volcanic ash.
MOUNT MERAPI ERUPTED AGAIN ON JUNE 6-8, 2006
• Mount Merapi volcano emitted lava, debris, and pyroclastic flows (superheated clouds of gas) on Tuesday, June 6 and Wednesday, June 7.
EVACUATION
• 11,000 from three districts evacuated to schools and other “safe haven” emer-gency shelters.
MANY CHOSE TO EVACUATE
• Many citizens chose to evacuate.
• Evacuation was ordered.
• Villagers remembered the 1994 disaster.
MANY CHOOSE NOT TO EVACUATE
• Many citizens chose not to evacuate because shelters are boring and they wanted to provide for livestock and tend crops.
POLICY POLICY ADOPTIONADOPTION
POLICY POLICY ADOPTIONADOPTION
RISK ASSESSMENT
• VULNERABILITYVULNERABILITY
• EXPOSUREEXPOSURE
• EVENTEVENT
POLICY ASSESSMENT
• COSTCOST
• BENEFITBENEFIT
•CONSEQUENCESCONSEQUENCES
TOWARDS DISASTER RISK REDUCTION TOWARDS DISASTER RISK REDUCTION FOR VOLCANOESFOR VOLCANOES
VOLCANIC VOLCANIC ERUPTIONSERUPTIONS
VOLCANIC VOLCANIC ERUPTIONSERUPTIONS EXPECTED EXPECTED
LOSSLOSS
EXPECTED EXPECTED LOSSLOSS
THE KEYS TO RESILIENCE: 1) KNOW THE ERUPTIVE HISTORY OF
YOUR REGION’S VOLCANOES,2) BE PREPARED
3) HAVE A WARNING SYSTEM 4) EVACUATE
5) LEARN FROM THE EXPERIENCE AND START OVER