The 5.1 Tangshan earthquake was recorded by the guralp seismometer

The 5.1 Tangshan earthquake was recorded by the guralp seismometer

The above picture is from the official microblog of China Seismological Network Express

According to the official measurement of China seismic network, a magnitude 5.1 earthquake occurred in Guye District, Tangshan City, Hebei Province at 6:38 on July 12. The focal depth was 10 kilometers, and the epicenter was 39.78 degrees north latitude and 118.44 degrees east longitude.

Our company is located in Wangjing SOHO, Chaoyang District, Beijing. The 3escde broadband three component seismometer of guralp company, which was being overhauled by the maintenance department of our company at that time, recorded the time and waveform of the earthquake reaching Beijing. Since the recording time of seismometer is UTC time, the recording time is 22:38:48 UTC time on July 11, 2020, and the conversion to Beijing time is 06:38:48 on July 12, 2020.

The 3escde digital seismograph produced by G ü RALP company is an integrated seismograph composed of the famous 3esc seismometer, built-in dm24 digital converter and data acquisition module.

Our company is the exclusive agent and technical service center of British guralp company.

3escde broadband three component integrated seismometer

The waveform recorded by the instrument at that time