
The vast Qinghai-Tibetan plateau has been jolted by seismic activity since Tuesday, including a deadly 6.8-magnitude quake in the foothills of the Himalayas in Tibet and a smaller 3.1-magnitude quake in Sichuan.
The epicentre of the Qinghai quake, which struck at 3.44pm, was located in Madoi county in the Golog prefecture at a depth of 14km, according to the China Earthquake Networks Centre (CENC).
It was about 200km west of the county seat of Madoi, a town populated mainly by Tibetans, including former nomadic herders and their families who have resettled in government-built homes over the years.
Earthquakes are common along the edges of the seismically active Qinghai-Tibetan plateau, including Madoi.
A total of 102 quakes of magnitude 3 or higher have been logged within 200km of Wednesday’s quake over the past five years, according to CENC, with the largest reaching a magnitude of 7.4 in 2021.
The epicentre of Qinghai quake on Wednesday is about 1,000km northeast of the quake in Tibet a day earlier.