At least 1000 people killed, 300 injured and 300 buildings destroyed on Nias; 100 people killed, many injured and several buildings damaged on Simeulue; 200 people killed in Kepulauan Banyak; 3 people killed, 40 injured and some damage in the Meulaboh area, Sumatra．A 3-meter tsunami damaged the port and airport on Simeulue．

　　Survivors of tsunami attacks describe them as dark “walls”of water．Impelled(逼迫)by the mass of water behind them, the waves bulldoze(欺凌)onto the shore and the coast, blowing down trees, pushing stone walls and lighthouses, and breaking houses and buildings into pieces．

　　At least 86 000 people killed, more than 69 000 injured and heavy damage in northern Pakistan．The heaviest damage occurred in the Muzaffarabad area, Kashmir where entire villages were destroyed and at Uri where 80 percent of the town was destroyed．At least 32 335 buildings fell down in Anantnag, Baramula, Jammu and Srinagar, Kashmir．Buildings fell down in Abbottabad, Gujranwala, Gujrat, Islamabad, Lahore and Rawalpindi, Pakistan．Maximum．Felt at Topi; at Islamabad, Peshawar and Rawalpindi; at Faisalabad and Lahore．Felt at Chakwal, Jhang, Sargodha and as far as Quetta．At least 1350 people killed and 6266 injured in India．

　　As a plate plunges(陷入)down into Earth’s interior(内部)，it moves in fits and starts－sticking for a while, then slipping．When the locked zone gives way, parts of the seafloor may snap(弹起)upward like a diver’s springboard; other areas may sink downward．In the instant after the quake, the shape of the sea surface mirrors the seafloor below．But, just as quickly, gravity(重力)acts to return the sea surface to its original shape．

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