# The Slow Down recording

> A sound slowly falling in frequency over about seven minutes, attributed to an iceberg running aground.

Source: https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7VY40FKX/the-slow-down-recording  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Mysteries](https://mysteriesdept.com/mysteries)[Bloop and NOAA's unexplained ocean sounds](https://mysteriesdept.com/mysteries/noaa-ocean-sounds)[Artifacts](https://mysteriesdept.com/mysteries/noaa-ocean-sounds#artifacts)The Slow Down recording

**ART** 0D9C7VY40FKX·Artifact · recording

# The Slow Down recording

Recording0:18Public domain1997, day 139 per file name

[Cite][Download](https://mysteriesdept.com/files/d/e3ba36fc9201afeb4deb0d81c0122ae972821ea9512d8233067b282f6a1660a9)

0:00 / 0:18

 ![Spectrogram of The Slow Down recording](https://mysteriesdept.com/files/v/e3ba36fc9201afeb4deb0d81c0122ae972821ea9512d8233067b282f6a1660a9/spec)

0:00Spectrogram, 0 to 1 kHz0:18

A sound slowly falling in frequency over about seven minutes, attributed to an iceberg running aground.

NOAA Pacific Marine Environmental Laboratory, 1997. Public domain

## Copies 2

**Audio** NOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: [Cryogenic (Ice) sounds](https://mysteriesdept.com/sources/SRC0D9C72202TZM/cryogenic-ice-sounds)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds_cryogenic.html)[Download](https://mysteriesdept.com/files/d/e3ba36fc9201afeb4deb0d81c0122ae972821ea9512d8233067b282f6a1660a9)

**Document** NOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: [Cryogenic (Ice) sounds](https://mysteriesdept.com/sources/SRC0D9C72202TZM/cryogenic-ice-sounds)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds_cryogenic.html)[Download](https://mysteriesdept.com/files/d/343b94bcf3f5f437b3859f6cc0b4c7e5aa3aa14a7146822bde8968eea6771711)

## Where it was recorded

[Eastern equatorial Pacific autonomous hydrophone array](https://mysteriesdept.com/records/PLC0D9C76EM1DXR/eastern-equatorial-pacific-autonomous-hydrophone-array) · Hydrophone array (moorings between about 8°N and 8°S near 95°W–110°W)

## Sources 1

- [Cryogenic (Ice) sounds](https://mysteriesdept.com/sources/SRC0D9C72202TZM/cryogenic-ice-sounds)_SRC_

## Cite it

```
Mysteries Department. (2026). The Slow Down recording [Artifact ART0D9C7VY40FKX]. https://mysteriesdept.com/r/ART0D9C7VY40FKX
```

Key

**ART** 0D9C7VY40FKX

Kind

Recording

Held by

NOAA Pacific Marine Environmental Laboratory

Dated

1997, day 139 per file name

Licence

Public domain (US government work)

Place

[Eastern equatorial Pacific autonomous hydrophone array](https://mysteriesdept.com/records/PLC0D9C76EM1DXR/eastern-equatorial-pacific-autonomous-hydrophone-array)

Part of

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

The record

Every record is open data. Take this one as JSON, with its links and its history.

[JSON](https://mysteriesdept.com/api/v1/records/ART0D9C7VY40FKX)