M6.6 earthquake strikes near Ya’an city, Sichuan province, China

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M6.6 Earthquake Strikes Near Ya’an City, Sichuan Province, China 8:02 AM, SATURDAY, APRIL 20, 2013 …

M6.6 Earthquake Strikes Near Ya’an City, Sichuan Province, China 8:02 AM, SATURDAY, APRIL 20, 2013

The M 6.6 earthquake was generated by rupture on the same fault zone that generated the May 2008 earthquake. The earthquake struck a remote, mostly rural and mountainous area of southwestern China's Sichuan province near Ya’an City (pop. 1.5 million) on Saturday morning killed at least 180 and injured about 11,000. Powerpoint courtesy of Dr Walter Hays, Global Alliance for Disaster Reduction

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  • 1. DAMAGE
  • 2. M6.6 EARTHQUAKE STRIKESNEAR YA’AN CITY, SICHUANPROVINCE, CHINAUPDATE 2:SUNDAY, APRIL 21, 8:30 AM
  • 3. DAY 1
  • 4. 8:02 AM, SATURDAY, APRIL20, 2013• The M 6.6 earthquake was generatedby rupture on the same fault zone thatgenerated the May 2008 earthquake.• The earthquake struck a remote, mostlyrural and mountainous area ofsouthwestern Chinas Sichuanprovince near Ya’an City (pop. 1.5million) on Saturday morning killed atleast 180 and injured about 11,000.
  • 5. SHALLOW DEPTH• The earthquake was generated byrupture further south on theLongmanshan fault zone, the samefault zone that ruptured in the May2008 earthquake.• A relatively shallow focal depth of12 km (7.5 miles) made the groundshaking even more destructive.
  • 6. CLOSE TO THE MAY 12, 2008QUAKE• The epicenter was close to theepicenter of the M8.0earthquake that killed 88,000people and damaged millionsof buildings on May 12, 2008.
  • 7. Premier Li Keqiang flew toYaan to direct rescue efforts,and he and President XiJinping ordered officials andrescuers to make savingpeople the top priority
  • 8. CAUSE OF THE DISASTER::THE SAME AS IN 2008--INADEQUATE IMPLEMENTATIONOF AN INADEQUATE BUILDINGCODE
  • 9. INITIAL REACTIONS• When the earthquake occurred, manypeople were at home, sleeping orhaving breakfast.• People in their underwear and wrappedin blankets ran into the streets of Yaanand even in the provincial capital ofChengdu, 115 kilometers (70 miles)east of Lushan,
  • 10. INITIAL IMPACTS• The earthquake toppled buildings,triggered landslides and disruptedphone and power connections andwater service in mountainous Lushancounty.• The village of Longmen was hitparticularly hard, with nearly all thebuildings being destroyed.
  • 11. The well-known Bifengxiapanda preserve, which isnear Lushan, was notaffected by the quake.
  • 12. BUILDINGS WERE UNABLE TOWITHSTAND THE STRONGGROUND SHAKING, WHICHREPORTEDLY LASTED A MINUTEIN LONGMAN
  • 13. DAMAGE
  • 14. DAMAGE
  • 15. DAMAGE
  • 16. Day 2:SUNDAY, APRIL 21RAIN, LANDSLIDES, IMPASSABLEROADS, AND DEBRIS SLOWED SEARCHAND RESCUE AND EMERGENCYRESPONSE
  • 17. The government had mobilizedthousands of soldiers and others— 7,000 people by Saturdayafternoon — sending excavatorsand other heavy machinery as wellas tents, blankets and otheremergency supplies
  • 18. PART OF 48 HOUR “GOLDEN PERIOD”FOR SEARCH AND RESCUE HINDERED• With roads blocked for several hoursby landslides, the military surveyed thedisaster area by air while waiting.• Aerial photos showed individualhouses in ruins in Lushan, outlyingvillages flattened into rubble, and theroofs of some taller buildings shakenoff, exposing the floors beneath them.
  • 19. SURVIVORS SLEEP OUTSIDE• Fearing further damage fromaftershocks, wary survivors sleptoutside their damaged homes in Ya’ancity and Longman.
  • 20. The Chinese Red Crossdeployed relief teams withsupplies of food, water,medicine and rescueequipment to the disasterareas.
  • 21. SUNDAY, APRIL 21:FRUSTRATION• Along the main roads, ambulances, fireengines and military trucks piled highwith supplies waited in long lines,some turning back to try other routeswhen roads were impassable.• Rescuers were forced to dynamiteboulders that had fallen across roads.