Sonar II

from On Sonorous Seas by Fergus Hall

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Sonar is much higher in pitch than I realised before hearing the HWDT recordings. When pitch shifted much lower it reveals many higher frequencies and artefacts that are initially far outside the range of human hearing. I magnified these artefacts with heavy audio processing, creating a barrage of harsh sound.

In Fathoms, Rebecca Giggs likens anthropomorphic sound in the oceans to deforestation on land. Though we are largely unaware of this, sonar, oil exploration and shipping lanes carve out vast areas of territory, creating boundaries that are impenetrable for animals that navigate their world using sound. Habitats and food sources, therefore, shrink and mating populations are unable to locate one another.

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from On Sonorous Seas, released July 7, 2022

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On Sonorous Seas Scotland, UK

This story begins with a whale carcass which came ashore in August 2018 at Traigh an t-Suidhe/Strand of the Seat, at the North end of the Isle of Iona. It is a story told with the voices of science, art, music and poetry, and it explores the impact of military sonar on the ecology of the seas surrounding the Hebrides.

www.onsonorousseas.com

www.fergushallmusic.com
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