Short- and long-term monitoring of underwater sound levels in the Hudson River (New York, USA).

摘要: There is a growing body of research on natural and man-made sounds that create aquatic soundscapes. Less known about the soundscapes shallow waters, such as in harbors, rivers, lakes. Knowledge needed baseline against which to determine changes noise levels resulting from human activities. To provide data for Hudson River at site Tappan Zee Bridge, 12 acoustic loggers were deployed 24-h period ranges 0-3000 m bridge, four re-deployed three months continuous recording. Results demonstrate this region river relatively quiet compared open ocean conditions other large systems. Moreover, soundscape had temporal spatial diversity. The patterns underwater bridge change with cadence activity. Bridge (e.g., road traffic) was only detected within 300 m; farther boating activity increased sound during day, especially weekend. also suggest recording near bottom produced lower pseudo-noise than previous studies recorded water column.