For the second Disquiet Juncto (http://soundcloud.com/groups/disquiet-junto).

Fog horn sample by Schaarsen: http://www.freesound.org/people/schaarsen/sounds/69663/

Train whistle sample by Ecodios: http://www.freesound.org/people/ecodios/sounds/119963/

Made entirely in Audacity. Trimmed the samples, did some pitch and time shifting, made them into two loops of different lengths,then applied a continuous time-and-pitch shift across the whole thing: it gets 50% slower and 25% higher by the time it gets to the end. No other processing except normalization..

Photo of Chilean coastal fog tower from http://inhabitat.com/coastal-fog-tower/