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M7.2 EARTHQUAKE STRIKES CENTRAL CHILE NEAR THE LOCATION OF THE M8.8 FEBRUARY 2010 QUAKE March 25, 2012 Walter Hays, Global Alliance for Disaster Reduction,

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Presentation on theme: "M7.2 EARTHQUAKE STRIKES CENTRAL CHILE NEAR THE LOCATION OF THE M8.8 FEBRUARY 2010 QUAKE March 25, 2012 Walter Hays, Global Alliance for Disaster Reduction,"— Presentation transcript:

1 M7.2 EARTHQUAKE STRIKES CENTRAL CHILE NEAR THE LOCATION OF THE M8.8 FEBRUARY 2010 QUAKE March 25, 2012 Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA

2 The M7.2 earthquake occurred on Sunday; 106 km (64 miles) west northwest of Talca, a city of 200,000+, and 226 km (134 miles) south of Santiago at a depth of 30 km (19 miles).

3 A SEISMOGRAM OF THE QUAKE

4 TALCA: FRIGHTENED RESIDENTS GATHER OUTSIDE

5 EARLY REPORTS NO MAJOR DAMAGE OR DEATHS; NO TSUNAMI

6 THE FEBRUARY 2010 EARTHQUAKE

7 M8.8 EARTHQUAKE STRIKES CENTRAL CHILE: 3:34 am on February 27, 2010 Subduction Zone Quake 500 Times More Energy than the M7.0 Haiti Quake 800+ Deaths; 500+ Injured Numerous Aftershocks Tsunami Waves Traveled Across Pacific Estimated Loss: $30 Billion

8 The Chilean people had to cope with the demands associated with: 1) a mega-quake, 2) a vigorous aftershock sequence with large events, 3) tsunami wave run up, 4) looting by some of the affluent sector, and 5) recovery after the loss of 15 percent of the GDP.

9 LOCATION: 330 KM (200 MI) FROM SANTIAGO

10 LOCATION: 100 KM FROM CONCEPCION; 330 KM FROM SANTIAGO

11 The quake’s hypocenter was at a depth of 37 km (22 miles)

12 DAMAGE IN HAITI (LEFT) MUCH WORSE THAN IN CHILE (RIGHT)

13 It was a catastrophic experience, even though Chile has experienced many past earthquakes, has implemented a modern building code, and was well prepared to respond to all aspects of the emergency.

14 Newly built apartment buildings were severely damaged and collapsed. Flames consumed buildings and a prison. Millions of people fled into streets darkened by the failure of power lines. Roads were damaged and bridges collapsed, causing cars and trucks to crash.

15 An estimated 1 ½ million buildings were damaged, with about 1/3 of them collapsing, along with extensive and wide spread damage to the infrastructure.

16 The damage could cost Chile up to $30 billion, equivalent to roughly 15 percent of its gross domestic product.

17 Swiss Re, the world's second- largest reinsurer, said the impact on the financial/insurance sector is expected to be between $4 billion and $7 billion.

18 CONCEPCION: INT’L SPACE STATION PHOTO:

19 PRESIDENT BACHELET VIEWS DAMAGE IN CONCEPCION

20 DAMAGED BUILDING IN CONCEPCION

21 FIRE AT CONCEPCION: 90 KM FROM EPICENTER

22 CONCEPCION: DAMAGED BUILDING

23 DAMAGED BUILDING DETAIL: CONCEPCION

24 CONCEPCION: URGENT MASS CARE NEEDS

25 CONCEPCION: LOOTERS

26 SEARCH AND RESCUE: CONCEPCION

27 TALCA: DAMAGE TO HOUSES

28

29 TALCA: DAMAGED HOTEL

30 INTERIOR DAMAGE

31 SANTIAGO: DAMAGED BUILDINGS

32 SANTIAGO: DAMAGE TO CHURCH

33 DAMAGE TO BUREO BRIDGE—HIGHWAY 5

34 TALCA: DAMAGE TO BRIDGE (300 KM S OF SANTIAGO)

35 CONCEPCION: ELEVATED HIGHWAY COLLAPSED

36 ELEVATED HIGHWAY COLLAPSE DETAIL

37

38

39 MOTOR WAY IN SANTIAGO

40 The aftershocks of the mega- earthquake provided an opportunity for measuring ground and building response for a range of excitation levels and site conditions.

41 Damage from tsunami wave run up was worse locally along the coast of Chile than at distant locations along the Pacific rim.

42 LOCAL TSUNAMI DAMAGE

43 TALCAHUANO PORT: LOCAL TSUNAMI DAMAGE

44

45 PELLEHUE, CHILE: AFTER TSUNAMI WAVE RUNUP

46 DICHATO, CHILE: AFTER TSUNAMI WAVE RUNUP

47 TSUNAMI WARNING CENTER ALERTS HAWAII

48 TSUNAMI WAVES MOVE ACROSS THE PACIFIC

49 HAWAII: 15 HOUR ADVANCE WARNING

50 SOUTHERN CALIFORNIA, HAWAII, AMERICAN SAMOA, GUAM, JAPAN, AND OTHER LOCATIONS IN PATH OF TSUNAMI WAVES DURING NEXT 15 HOURS “DODGED A BULLET” WHEN THE WAVE RUNUP WAS MUCH LESS THAN FORECAST.


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