Underwater noise assessment in the Gulf of Trieste (Northern Adriatic Sea, Italy) using an MSFD approach.
In the marine environment, underwater noise is one of the most widespread input of man-made energy. Recently, the European Commission has stressed the necessity of establishing threshold levels as a target for the descriptor 11.2.1 "Continuous low frequency sounds" in the Marine Strategy Framework Directive (MSFD). In 2012, a monthly underwater noise monitoring programme was conducted in the Gulf of Trieste (Northern Adriatic Sea, Italy); the collected acoustic samples (frequency range: 10-20,000 Hz) were analysed in the 1/3 octave bands. The stations have been further clustered following the 63 and 125 Hz bands noise levels. Average SPL levels resulted similar to those previously computed for proximate areas, indicating that the Adriatic Sea sub-region experiences high noise pressure in the marine waters. In its turn this claims for a scientific and technical international cooperation, as requested by the EU programme. No seasonal variation in local noise levels has been found.
ARPA FVG - Regional Environmental Protection Agency of Friuli Venezia Giulia, via Cairoli 14, 33057 Palmanova, Udine, Italy. Electronic address: antonio.codarin@arpa.fvg.it.
Antonio
A
Codarin
Independent Scholar, via Alviano 18, 34170 Gorizia, Italy. Electronic address: marta.picciulin@gmail.com.
Marta
M
Picciulin
D000162:Acoustics; D004784:Environmental Monitoring / Q000379:methods*; D007558:Italy; D009622:Noise; D009792:Oceans and Seas; D012621:Seasons; D012767:Ships; D013016:Sound
Acoustics; Adriatic Sea; Measurements; Sea ambient noise