4a Group6 Sichuan Earthquake To Be Presented

Sichuan Earthqua ke 4A

Group 6

Earthquake Details Also known as Wenchuan earthquake. Datetime Magnitu de Depth Region Epicent er

Monday, 5/12/2008 at 02:28:01 PM 8.0 Mw 19 km Sichuan province, China Wenchuan County

• Affected many places. • Shaking felt by distant place, such as Beijing.

What is the cause? Located in the major earthquake zone. Result of motion on a northeast striking reverse fault or thrust fault on the northwestern

Major earthquake zone.

What is the cause? Northward convergence of the India plate against the Eurasia plate produce great pressure.

Buildings damaged in Beichuan.

Reflects tectonic stresses resulting from the convergence of crustal material

What is the cause?

Aftershocks Up to 22/05/2008 169 major aftershocks above magnitude 4.0 was recorded.

Picture showing

Immediate Effects About 1/3 of the buildings collapsed in Wenchuan. Transportation networks fully damaged. Water reservoirs were damaged potential danger of flooding. Landslides occurred. Deaths above 60,560.

Long-term Effects

i. To Sichuan: Great casualties and poor living environment. Speed up the spread of diseases.

Landslides, debris flowslandslide were severe.

(debris) dams

Landslide (debris) Dams Natural damming of a river . Mainly caused by excessive precipitation and earthquakes. About 13 landslide dams were formed.

Landslide dams formed.

Landslide Dams

1)

Earthquake lead to collision of 2 mountains, landslide occurred.

1)

Rocks and debris from the mountains blocked the river.

Landslide Dams

1)

Water created dam reservoirs (lake), water level rises.

1)

Great casualties when downstream flooding occurred.

Long-term Effects

i. To China:

Sichuan as the centre of agriculture & herding. May lead to food shortage problem in China.

Great pressure on inflation.

As the centre of of commercial commerce. Collapse buildings affected the

Rescue Works "Level I emergency contingency plan" was initiated. About 3.95 m medical personnel were sent. The People’s Liberation Army sent out about 200000 soldiers for rescue works. UNCIEF, Red Cross, World Vision.

Rescue Works Recovered the transportation & communication networks. Rescued more than 79,852 victims. Disinfections carried out to prevent the spread of diseases.

What caused the casualties so great? Less developed areas. Shallow epicentre.

Buildings didn't meet with the standard of earthquake-proof.  No earthquake warning was given. Public lacks awareness.

Signs & prediction On May 10, residents of Mianzhu observed unusual and large-scale toads migrating on a roadway. Similar phenomenon was observed a day earlier in Jiangsu.

Picture showing the toads

Signs & prediction On 12 May, sightings of unusually colorful and luminous cloud formations in two nearby provinces, short time before the earthquake. Believed to be earthquake lights.

What can we do? Donate money. Pay attention to the latest news of the event. Provide them with basic necessities. Help them to rebuild the earthquakeproof houses. Support them both physical and mentally.

References  Wikipedia  United States Geological Survey  Hong Kong Observatory  People Daily  BBC  Photos

Videos Sichuan University student takes video at 2:29pm Color clouds spotted 30 mins before the earthquake China Sichuan Earthquake Sichuan Wenchuan Earthquake

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