Automatic measurement by the China Earthquake Network: An earthquake of magnitude 5.1 occurred at 01:04 on September 4 near Haixi Prefecture in Qinghai. The final results are based on the official preliminary report.

Automatic measurement by the China Earthquake Network: An earthquake of magnitude 5.1 occurred at 01:04 on September 4 near Haixi Prefecture in Qinghai. The final results are based on the official preliminary report.