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dc.contributor.authorTape, Carl
dc.contributor.authorSilwal, Vipul
dc.contributor.authorHoltkamp, Stephen
dc.date.accessioned2019-12-07T23:58:58Z
dc.date.available2017-10-27T22:52:54Z
dc.date.available2018-08-08T08:40:57Z
dc.date.available2019-12-07T23:58:58Z
dc.date.issued2017-10-27
dc.identifier.urihttp://hdl.handle.net/11122/7947
dc.description.abstractWe present waveform record sections of 18 earthquakes recorded the Minto Flats fault zone in central Alaska. These include the largest earthquakes to have occurred within the Minto Flats fault zone since the installation of the 13-station FLATS network in September 2015 (Tape and West, 2014). Several seismograms from these earthquakes exhibit a ``step-response signal'' that is a long-period, unwanted signal that does not reflect regional ground motion. We use the term ``anomalously high amplitudes'' to refer to amplitudes within a certain bandpass that exceed the amplitude of earthquake ground motion (within the same bandpass). We attribute anomalously high amplitudes to three possibilities: (1) step-response signal due to local tilt or other effect, (2) step-response signal due to defective sensor, (3) digitizer clipping, (4) high noise (especially before the earthquake). We find widespread occurrences of the step-response signal for earthquakes in the Minto Flats fault zone.en_US
dc.description.sponsorshipThis project was supported in part by the National Science Foundation under Grant No. EAR-1352668.en_US
dc.language.isoen_USen_US
dc.subjectResearch Subject Categories::NATURAL SCIENCES::Earth sciences::Endogenous earth sciences::Solid earth physicsen_US
dc.titleStep-response signals recorded during earthquakes in Alaskaen_US
dc.typeTechnical Reporten_US
refterms.dateFOA2020-03-05T12:49:10Z


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