# Cryogenic (Ice) sounds

> Acoustics Program NOAA Pacific Marine Environmental Laboratory, n.d.. 10 records on Mysteries Department cite it. The only PMEL description of Slow Down…

Source: https://mysteriesdept.com/sources/SRC0D9C72202TZM/cryogenic-ice-sounds  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Sources](https://mysteriesdept.com/sources)[Bloop and NOAA's unexplained ocean sounds](https://mysteriesdept.com/mysteries/noaa-ocean-sounds)NOAA Pacific Marine Environmental Laboratory n.d.

**0**

# Cryogenic (Ice) sounds

Acoustics Program NOAA Pacific Marine Environmental Laboratory, n.d.. _NOAA PMEL Acoustics Program (pmel.noaa.gov)_.

The program's catalogue of ice sounds: calving, iceberg harmonic tremor, the Bloop, and Slow Down, described as an iceberg grounding whose sound descends in frequency over about seven minutes as the berg slows to a stop. The Slow Down audio file is named noise97139.wav.

**Bloop and NOAA's unexplained ocean sounds** Web pageCopy of **[The Slow Down recording](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7VY40FKX/the-slow-down-recording)** Checked against the original0

## What it's used for here

The only PMEL description of Slow Down and the file that dates it.

## Cited by on this site 10 records

[All of them are natural geophysical or cryogenic sounds (icequakes, grounding icebergs, volcanic eruptions…](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/answers/ANS0D9C7DH635Z3/all-of-them-are-natural-geophysical-or-cryogenic-sounds)

Answer

ANS

[Some of the three are groundings and others are different sources (for example icequakes or tremor from bergs…](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/answers/ANS0D9C7Q9P772G/some-of-the-three-are-groundings-and-others-are-different)

Answer

ANS

[The Bloop was an ice sound of another kind, such as calving from an ice shelf or a collision between bergs,…](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/answers/ANS0D9C7J5M4BVS/the-bloop-was-an-ice-sound-of-another-kind-such-as-calving)

Answer

ANS

[The Slow Down recording](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7VY40FKX/the-slow-down-recording)

ART

[The Slow Down recording: audio](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/copies/CPY0D9C7W5Y57M6/the-slow-down-recording-audio)

CPY

[The Slow Down recording: document](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/copies/CPY0D9C7WDR4B44/the-slow-down-recording-document)

CPY

[PMEL's comparison sounds include calving and iceberg harmonic tremor as well as icequakes.](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/evidence/EVD0D9C7JN83CD8/pmels-comparison-sounds-include-calving-and-iceberg-harmonic)

Evidence

EVD

[Slow Down is recorded](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/events/EVT0D9C7A3T06YV/slow-down-is-recorded)

EVT

[The Bloop and NOAA's unexplained ocean sounds](https://mysteriesdept.com/mysteries/noaa-ocean-sounds)

The mystery article

MYS

[Were Train, Slow Down and Julia made by icebergs grounding on the seafloor?](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/questions/QST0D9C7D1J3NMQ/were-train-slow-down-and-julia-made-by-icebergs-grounding-on)

Question

QST

## Cite it

```
NOAA Pacific Marine Environmental Laboratory, A. P. (n.d.). Cryogenic (Ice) sounds. NOAA PMEL Acoustics Program (pmel.noaa.gov). https://www.pmel.noaa.gov/acoustics/sounds_cryogenic.html
```

[Read it free at pmel.noaa.gov](https://www.pmel.noaa.gov/acoustics/sounds_cryogenic.html)

Key

**SRC** 0D9C72202TZM

Kind

Web page

Rights

public-domain

Kept

29 Oct 2026

Checked

Against the published original

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS.

[CSL-JSON](https://mysteriesdept.com/sources/SRC0D9C72202TZM/cryogenic-ice-sounds/csl.json)