中国地震台网测定

据中国台网测定，2004年05月11日,07时27分28.3秒 在青海德令哈(北纬37.4,东经96.7) 发生5.9级地震。

美国地震台网测定:

	Magnitude	5.5
	Date-Time	Monday, May 10, 2004 at 23:27:25 (UTC) - Coordinated Universal Time Tuesday, May 11, 2004 at 07:27:25 AM local time at epicenter Time of Earthquake in other Time Zones
	Location	37.56N 96.63E
	Depth	10.0 kilometers
	Region	NORTHERN QINGHAI, CHINA
	Reference	200 km (125 miles) NE of Golmud, Qinghai, China 485 km (300 miles) WNW of Xining, Qinghai, China 640 km (400 miles) SSE of Hami, Xinjiang, China 1740 km (1080 miles) W of BEIJING, Beijing, China
	Location Quality	Error estimate: horizontal +/- 6.1 km; depth fixed by location program
	Location Quality Parameters	Nst=85, Nph=85, Dmin=1007.9 km, Rmss=0.88 sec, Erho=6.1 km, Erzz=0 km, Gp=40.1 degrees
	Source	USGS NEIC (WDCS-D)