What’s this signal? Train? Electronics?

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For several weeks TXESP has observed an odd and interesting seismic signal recorded on the EQ-1 seismograph.  During the 15:00 UTC hour (locally 9:00 am CST), we observe the seismogram shown below.  We are curious if this mysterious, consistent recording is detecting a local scheduled train? ground motion caused by the pool circulating on a program? pumpin at the nearest water station (less than 5km away)?  What does it look like to you?  Our guess is the train although we have been unsuccessful locating the nearest railroad crossing’s train schedule (its privately owned).  

17112019_1500hr_scrnsht_eq1_train
Screenshot of a mysterious, consistently occurring signal, during the 1500 UTC hour, is recorded on the EQ1 at IRIS’ Station E1TX.
17112019_1500hr_extract_train
Seismogram of a mysterious, consistently occurring signal, during the 1500 UTC hour, is recorded on the EQ1 at IRIS’ Station E1TX.
17112019_1500hr_extractRAD87_BP3.0to6.0_train
Seismogram of a mysterious, consistently occurring signal, during the 1500 UTC hour, is recorded at Raspberry Shake Station RAD87. A BP 3.0-6.0 Hz filter applied.
17112019_1500hr_extractRAD87_BP3.0to6.0_spectra_train
Spectrogram of a mysterious, consistently occurring signal, during the 1500 UTC hour, is recorded at Raspberry Shake Station RAD87. A BP 3.0-6.0 Hz filter applied.

 

 

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