>>>沪江汶川地震专题

BEIJING, May 18 (Xinhua) -- The China Seismological Bureau (CSB) on Sunday revised the magnitude of southwest China earthquake from 7.8 to 8.0 on the Richter scale.

The magnitude was revised upwards after specialists carried out"real-time and detailed measurements of the quake according to international practices," the bureau said.

Chinese earthquake experts have also referenced quake data provided by other seismological observatories around the globe, it said.

The US Geological Survey and Japan Meteorological Agency has put the magnitude of the tremor at 7.9.

The first report of by CSB set the magnitude at 7.6 which was shortly upgraded to 7.8 after the quake hit Sichuan Province on May 12.

The quake, whose death toll has exceeded 32,000, has seriously damaged buildings, bridges and other public facilities in an area of more than 100,000 square kilometers.

新华网北京5月18日电（记者李斌）记者从中国地震局获悉，在5月12日四川汶川地震发生后，中国地震台网中心利用国家地震台网的实时观测数据，速报的震级为里氏7．8级。随后，根据国际惯例，地震专家利用包括全球地震台网在内的更多台站资料，对这次地震的参数进行了详细测定，据此对震级进行修订，修订后震级为里氏8．0级。

据初步调查统计，此次地震最大烈度达十一度，破坏特别严重的地区超过10万平方公里。受灾最严重的地区是四川省北川、什邡、绵竹、汶川、彭州等地，灾区涉及四川、甘肃、陕西、重庆、云南等地。

>>>沪江汶川地震专题