"Asked what the memorial means for her, Sing pointed at herself and at reporters at a press briefing, saying that it reflects the soul of everybody with a conscience"A sound wave, which is ue星体育官方网站入口sually generated in the event of an artificial earthquake, was not detectedThe China Earthquake Administration, of which the CENC is a part, and related departments conducted studies on the infrasonic records of the earthquake and previous quakes including those provoked by nuclear tests on the Korean PeninsulaEarlier, South Korea's weather agency said the quake is presumed to have been a natural one, the country's Yonhap news agency reportedThey concluded that Saturday's quake is a natural one, the seismic service saide星体育官方网站入口4 on the Richter scale that occurred Saturday in the Democratic People's Republic of Korea (DPRK) is not the result of a nuclear test, the China Earthquake Networks Center (CENC) said