noun
seismogram
Technical term used in seismology for the record produced by a seismograph.
地震記象から震源の位置を推定する。
Estimate the epicenter location from the seismogram.
地震計 is the instrument (seismograph), while 地震記象 is the record it produces.
Compound of 地震 (earthquake) and 記象 (recorded image, from 記 'record' and 象 'phenomenon').