Evidence · Bloop and NOAA's unexplained ocean sounds

Upsweep peaks in spring and autumn, which may reflect either the source or seasonal propagation.

Speculative0

What it bears on 1 answer

Upsweep is an ice sound, its seasonality driven by the annual cycle of iceberg drift and breakup.

Still possible

FOR

Cite it

Mysteries Department. (2026). Upsweep peaks in spring and autumn, which may reflect either the source or seasonal propagation. [Evidence EVD0D9C7N3C1XRY]. https://mysteriesdept.com/r/EVD0D9C7N3C1XRY

@misc{mysteriesdept_evd0d9c7n3c1xry,
  title     = {Upsweep peaks in spring and autumn, which may reflect either the source or seasonal propagation.},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Evidence, catalog key EVD0D9C7N3C1XRY},
  url       = {https://mysteriesdept.com/r/EVD0D9C7N3C1XRY}
}