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Ulaanbaatar, Mongolia (seismic)

This near-real-time audio stream originates from a seismometer at Ulaanbaatar, Mongolia (IRIS/USGS station ULN). The low-frequency sounds of the solid Earth have been speeded up by a factor of 900× to make them audible. As a result, frequencies have been transposed upward about 10 octaves. Each successive audio program (separated by a brief pause) compresses the last 168 hours into about 11 minutes (exactly 11:12) of listening time.

Spectrogram loading...

Annotated events during this period:

Technical details:

Station : ULN (net: IRIS/USGS) at Ulaanbaatar, Mongolia
Sensor : STS-1V/VBB
Recorder : Quanterra QX80 @ 20 Hz
Pod : ms-urania@x.x.45.31 | macOS 10.14.5 | esound v. 157
Last heard from pod : Wed Nov 13 00:44:19 UTC 2019 (about 7 minutes ago)
Speedup : ×900
Loop duration (real) : 168 hours
Loop duration (audio) : 11:12 (stereo)
Data channels : miniseed (IU.ULN.00.BH1 IU.ULN.00.BH2)
Spectrogram type : post-processed data
Gain correction : 25 dB
SoX post-processing : highpass -2 90 highpass -2 90
compand 0.001,0.01 6:-80,-50,-40,-10,0,-3
Archives : 2019
SHOUTcast : http://174.138.63.51:8040/;stream (es21@8040)
Latest factoids : uln.7.factoids.txt

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