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Palmer Station, Antarctica (seismic station PMSA)

This near-real-time audio stream originates from a seismometer at Palmer Station, Antarctica (IRIS/USGS station PMSA). The low-frequency sounds of the solid Earth have been sped up by a factor of 500× to make them audible. As a result, frequencies have been transposed upward about 9 octaves. Each successive audio program (separated by a brief pause) compresses the last 48 hours into about 6 minutes (exactly 05:45) of listening time.

This station is situated on an island off the coast of West Antarctica, near the Larsen Ice Shelf. Some of the clicking and gurgling sounds you hear are unique to this station. Could these be due to movement of the nearby ice sheet or to icebergs grounding in the surrounding waters?

Spectrogram loading...

Annotated events during this period:

Technical details:

Status :   (Operating normally)
Manual flags : (none)
Station : PMSA (net: IRIS/USGS) at Palmer Station, Antarctica
Sensor : STS-1VBB_w/E300
Recorder : Q330 @ 100 Hz
Pod : ms-rhea@x.x.31.38 | macOS 12.6.4 | psm v. 176
Last heard from pod : Tue Jun 18 05:16:46 UTC 2024 (13 seconds ago)
Speedup : ×500
Loop duration (real) : 48 hours
Loop duration (audio) : 05:45 (stereo)
Data channels : miniseed (IU.PMSA.00.BH1 IU.PMSA.00.BH2)
Spectrogram type : raw 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 : 2024 | 2023 | 2022 | 2021 | 2020 | 2019
Audio Stream : https://audibleearth.com/proxy/es23/stream (es23@8044)
Latest factoids : pmsa.9.factoids.txt