Focus: therm, hydro (p. 5,6). de- away, down, not.
Rainbuoys - Acoustic Rain Gauges. Acoustic Rain Gauge Attempt to estimate rainfall and wind strength from sound spectrum 16 frequency bins from 500 Hz.
Sounds in the sea. Snapping shrimp Major source of biological noise in shallow temperate and tropical waters 20 dB above the noise level typical of sea.
