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LESSONS LEARNED FROM PAST NOTABLE DISASTERS JAPAN PART 1B: TSUNAMIS. Walter Hays, Global Alliance for Disaster Reduction, Vienna, Virginia, USA . NATURAL HAZARDS THAT PLACE JAPAN’S COMMUNITIES AT RISK. EARTHQUAKES/TSUNAMIS. GOAL: DISASTER RESILIENCE. TYPHOONS. FLOODS.
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LESSONS LEARNED FROM PAST NOTABLE DISASTERS JAPANPART 1B: TSUNAMIS Walter Hays, Global Alliance for Disaster Reduction, Vienna, Virginia, USA
NATURAL HAZARDS THAT PLACE JAPAN’S COMMUNITIES AT RISK EARTHQUAKES/TSUNAMIS GOAL: DISASTER RESILIENCE TYPHOONS FLOODS ENACT AND IMPLEMENT POLICIES HAVING HIGH BENEFIT/COST FOR COMMUNITY RESILIENCE LANDSLIDES VOLCANIC ERUPTIONS GLOBAL CLIMATE CHANGE
TSUNAMIS EARTHQUAKES THAT GENERATE TSUNAMIS OCCUR FREQUENTLY IN JAPAN AS A RESULT OF COMPLEX SUBDUCTION OF THE PACIFIC, PHILIPPINE AND EURASIAN PLATES
TSUNAMI HAZARDS • PEOPLE AND BLDGS. • VULNERABILITY • LOCATION • PREPAREDNESS • PROTECTION • EARLY WARNING • EMERGENCY RESPONSE • RECOVERY and • RECONSTRUCTION TSUNAMI RISK POLICY OPTIONS ACCEPTABLE RISK RISK UNACCEPTABLE RISK GOAL: TSUNAMI DISASTER RESILIENCE JAPAN’S COMMUNITIES DATA BASES AND INFORMATION HAZARDS: GROUND SHAKING GROUND FAILURE SURFACE FAULTING TECTONIC DEFORMATION TSUNAMI RUN UP AFTERSHOCKS
CAUSES OF DAMAGE INADEQUATE RESISTANCE TO HORIZONTAL GROUND SHAKING SOIL AMPLIFICATION PERMANENT DISPLACEMENT (SURFACE FAULTING & GROUND FAILURE) IRREGULARITIES IN ELEVATION AND PLAN EARTHQUAKES TSUNAMI WAVE RUNUP “DISASTER LABORATORIES” POOR DETAILING AND WEAK CONSTRUCTION MATERIALS FRAGILITY OF NON-STRUCTURAL ELEMENTS
CAUSES OF DAMAGE HIGH VELOCITY IMPACT OF INCOMING WAVES INLAND DISTANCE OF WAVE RUNUP VERTICAL HEIGHT OF WAVE RUNUP INADEQUATE RESISTANCE OF BUILDINGS TSUNAMIS FLOODING “DISASTER LABORATORIES” INADEQUATE HORIZONTAL AND VERTICAL EVACUATION PROXIMITY TO SOURCE OF TSUNAMI
LESSONS LEARNED ABOUT DISASTER RESILIENCE • ALL TSUNAMIS. • DISASTER-INTELLIGENT COMMUNITIES USE TIMELYEARLY WARNING BASED ON CRITICAL INFORM-ATION TO EVACUATE PEOPLE AND PREPARE.
THE PACIFIC TSUNAMI WARNING CENTER HAS A VITAL ROLE IN ISSUING TSUNAMI WARNINGS
SOME OF JAPAN’S NOTABLE TSUNAMI EXPERIENCES JUNE 16, 1964 MARCH 11, 2011
THE NIIGATA EARTHQUAKE: JUNE 16, 1964 • The M7.5 Niigata earthquake devastated Niigata, located 50 km south of the epicenter, mainly as a result of massive soil failure and tsunami waves. • The port of Niigata was completely destroyed by the tsunami waves..
THE TOHOKU DISASTER: JANUARY. 17, 1995 • The M9.0 Tohoku earthquake was huge, but its ground shaking did NOT cause the disaster that killed an estimated 21,000 people … • The tsunami generated by the earthquake did!
THE TSUNAMI Wave run up reached 40 meters in some locations
THE TSUNAMI—the beginning • The tsunami slammed the east coast of Japan, sweeping away boats, cars, homes and people, before racing across the Pacific ---
AN OFFSHORE EPICENTER • It only took seconds for the P-and S-waves to reach Sendai, and about 15 minutes for the tsunami waves, but what a difference in damage..
UNEXPECTED IMPACTS • The nuclear power plants in the region shut down automatically; an immediate evacuation of tens of thousands in 10- 20 km radii from the plant followed. • Radiation levels at the Fukushima Daiichi nuclear facility were 1,000 times normal levels.
IMMEDIATE SOCIETAL IMPACTS • Four and one-half million left without electricity. • One and one-half million without water. • Metro, trains, and airport shut down.
URGENT SOCIETAL NEEDS • Vertical evacuation to escape the tsunami wave run up, the only way to save lives, was not available to most people.
URGENT SOCIETAL NEEDS • Mass care and health care needs were urgent because of the high radiation levels. • Deaths, as expected reached tens of thousands.
THE TSUNAMI---the end • --- The tsunami then raced across the Pacific at 822 -1222 kph (500 to 800 mph) to arrive 5-7 hours later in Alaska and Hawaii and other parts of the West Coast of the USA, and 18 hours later along the coast of South America.
HAWAII • The Pacific Tsunami Warning Center reported that water rushed ashore in Honolulu, swamping the beach in Waikiki and surging over the break wall in the world-famous resort, BUT stopping short of the area's high-rise hotels.
LESSONS LEARNED FOR DISASTER RESILIENCE • ALL TSUNAMIS • CAPACITY FOR INTELLIGENT EMERGENCY RESPONSE IS ESSENTIAL FOR COMMUNITY RESILIENCE.
EMERGENCY RESPONSE--- A NIGHTMARE! • The fires and explosions in the Fukushima Daiichi nuclear facility and radiation levels that were 1,000 times normal levels created a “nightmare disaster response scenario” for the Government of Japan.
MARCH 12 EVACUATION AND MASS CARE
Immediately after the earthquake and tsunami, the Japanese Government began implementing its post- disaster response plans in a highly-charged, possible “nightmare nuclear disaster” environment.
URGENT NEED FOR SEARCH AND RESCUE • Even though, with so many people (about 20,000) missing over a wide area after the tsunami, search and rescue was a moral imperative and an urgent need,--- • IT WAS UNUSUALLY DIFFICULT!
EVACUATION • Approximately 450,000 people were evacuated by military personnel from areas damaged in the quake and in a 33 km radius around the nuclear facilities
JAPAN’S SEARCH AND RESCUE TEAMS • The Japanese urban search and rescue teams, which had been helping in the search for Christchurch, New Zealand earthquake victims for two weeks, headed back to Japan to help with the S and R.
JAPAN’S SEARCH AND RESCUE • Approximately 50,000 members of Japan’s Self Defense Forces were mobilized immediately and sent to the hardest hit areas.
JAPAN’S SEARCH AND RESCUE • Tokushu Kyuunan Tai, the search and rescue unit of the Japan Coast Guard, was dispatched to accelerate search and rescue operations.
MARCH 12-17 69 COUNTRIES PROMISED HUMANITARIAN ASSISTANCE, BUT WERE STYMIED BY THE RISK FROM RADIATION, LACK OF GAS, AND WEATHER
Search and rescue operations, evacuations, and humanitarian assistance on local and global scales…All were limited by the possibility of a “nightmare nuclear disaster.”
All actions were conducted with knowledge of the high risk associated with the possibility of a significant radiation release and a nuclear melt down.