# The Train recording

> A quasi-steady tone at 32 to 35 Hz, attributed to a large iceberg grounding on the seafloor.

Source: https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7V6P7CWX/the-train-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 Train recording

**ART** 0D9C7V6P7CWX·Artifact · recording

# The Train recording

Recording0:38Public domainRecorded 4 March 1997

[Cite][Download](https://mysteriesdept.com/files/d/7188fdded59d35a14bf2e7dfb3fdadbd4f1a88e306e64c09bd3751ab70c6b5d0)

0:00 / 0:38

 ![Spectrogram of The Train recording](https://mysteriesdept.com/files/v/7188fdded59d35a14bf2e7dfb3fdadbd4f1a88e306e64c09bd3751ab70c6b5d0/spec)

0:00Spectrogram, 0 to 1 kHz0:38

A quasi-steady tone at 32 to 35 Hz, attributed to a large iceberg grounding on the seafloor.

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: [Acoustics Monitoring Program: Iceberg Grounding (Train)](https://mysteriesdept.com/sources/SRC0D9C71JC5TEP/acoustics-monitoring-program-iceberg-grounding-train)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds/train.html)[Download](https://mysteriesdept.com/files/d/7188fdded59d35a14bf2e7dfb3fdadbd4f1a88e306e64c09bd3751ab70c6b5d0)

**Document** NOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: [Acoustics Monitoring Program: Iceberg Grounding (Train)](https://mysteriesdept.com/sources/SRC0D9C71JC5TEP/acoustics-monitoring-program-iceberg-grounding-train)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds/train.html)[Download](https://mysteriesdept.com/files/d/f1f1b1d3d091eac6d16ca03cad9442d4a990ef9916b5828ffe30de82db304327)

## 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

- [Acoustics Monitoring Program: Iceberg Grounding (Train)](https://mysteriesdept.com/sources/SRC0D9C71JC5TEP/acoustics-monitoring-program-iceberg-grounding-train)_SRC_

## Cite it

```
Mysteries Department. (2026). The Train recording [Artifact ART0D9C7V6P7CWX]. https://mysteriesdept.com/r/ART0D9C7V6P7CWX
```

Key

**ART** 0D9C7V6P7CWX

Kind

Recording

Held by

NOAA Pacific Marine Environmental Laboratory

Dated

recorded 4 March 1997

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/ART0D9C7V6P7CWX)