# Acoustics Monitoring Program: Icequakes (Bloop)

> Acoustics Program NOAA Pacific Marine Environmental Laboratory, n.d.. 13 records on Mysteries Department cite it. The primary statement of the…

Source: https://mysteriesdept.com/sources/SRC0D9C70TY0F01/acoustics-monitoring-program-icequakes-bloop  
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**

# Acoustics Monitoring Program: Icequakes (Bloop)

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

The program's own page for the Bloop. States that the broadband sounds recorded in summer 1997 are consistent with icequakes from large icebergs cracking, that hydrophones in the Scotia Sea recorded many icequakes with similar spectrograms while tracking iceberg A53a in early 2008, that such icequakes are heard at over 5,000 km, and that the arrival azimuth puts the source between Bransfield Strait and the Ross Sea, or at Cape Adare. Links the recording (sped up 16 times) and comparison sounds of calving and iceberg harmonic tremor.

**Bloop and NOAA's unexplained ocean sounds** Web pageCopy of **[The Bloop recording](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7SQT2DSN/the-bloop-recording)** Checked against the original0

## What it's used for here

The primary statement of the attribution and the source of the Bloop audio and spectrogram.

## Cited by on this site 13 records

[The Bloop was one or more icequakes from a large iceberg cracking somewhere between Bransfield Strait and the…](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/answers/ANS0D9C7GYJ6Y2Y/the-bloop-was-one-or-more-icequakes-from-a-large-iceberg)

Answer

ANS

[The Bloop recording](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7SQT2DSN/the-bloop-recording)

ART

[The Bloop recording: audio](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/copies/CPY0D9C7SZM4Y5W/the-bloop-recording-audio)

CPY

[The Bloop recording: document](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/copies/CPY0D9C7T7E6AFS/the-bloop-recording-document)

CPY

[Its spectrogram resembles icequakes recorded in the Scotia Sea from iceberg A53a.](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/evidence/EVD0D9C7H6C7H9S/its-spectrogram-resembles-icequakes-recorded-in-the-scotia)

Evidence

EVD

[Its spectrogram resembles icequakes recorded in the Scotia Sea.](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/evidence/EVD0D9C7FQG2BND/its-spectrogram-resembles-icequakes-recorded-in-the-scotia)

Evidence

EVD

[The Bloop's bearing points between Bransfield Strait and the Ross Sea, far from shipping lanes.](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/evidence/EVD0D9C7G745WX2/the-bloops-bearing-points-between-bransfield-strait-and-the)

Evidence

EVD

[The bearing, spectrum comparison and source iceberg are not published in any peer-reviewed paper.](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/evidence/EVD0D9C7HXT47N9/the-bearing-spectrum-comparison-and-source-iceberg-are-not)

Evidence

EVD

[The Bloop is recorded](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/events/EVT0D9C7AKE6X0W/the-bloop-is-recorded)

EVT

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

The mystery article

MYS

[NOAA Pacific Marine Environmental Laboratory Acoustics Program](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/organisations/ORG0D9C78WR292A/noaa-pacific-marine-environmental-laboratory-acoustics)

ORG

[Was the Bloop an icequake, and from which iceberg?](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/questions/QST0D9C7CHY4R4M/was-the-bloop-an-icequake-and-from-which-iceberg)

Question

QST

[What made the loud unidentified sounds recorded by NOAA's Pacific hydrophones in the 1990s?](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/questions/QST0D9C7CA41BJB/what-made-the-loud-unidentified-sounds-recorded-by-noaas)

Question

QST

## Cite it

```
NOAA Pacific Marine Environmental Laboratory, A. P. (n.d.). Acoustics Monitoring Program: Icequakes (Bloop). NOAA PMEL Acoustics Program (pmel.noaa.gov). https://www.pmel.noaa.gov/acoustics/sounds/bloop.html
```

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

Key

**SRC** 0D9C70TY0F01

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/SRC0D9C70TY0F01/acoustics-monitoring-program-icequakes-bloop/csl.json)
