简介:AseismometerdataacquisitionunithasbeenusedintheChangpingseismicstationtorecordtheoutputofastrainmeter.Theoutputofastrainmeterwassampledatarateof100/secbyseismometeracquisitionfromtheoriginalrateof1perminute.Plentyofhighfrequencysampleddatawasrecorded.Theminutevaluecurvecalculatedfromtheseismometeracquisitionareconsistentwiththatoftheoriginaldatasampledbythestrainacquisitionsystem.Morecompletewaveformswererecordedwithahighersamplingrate,andseismicphaseparameterscalculatedbyusinghighersamplingratestrainseismicwavesarealsoinconsistencywiththeresultsofitspredecessors.SpectraofthestrainseismicwavesarecomparedwiththatofseismicwavesrecordedbyaseismometerintheShisanlingseismicstation,andtheirtrendsarealmostthesame.Besides,somelowerfrequencycomponentsstillexistinstrainseismicwaves.