Access Restriction

Author Reine, Kevin J. ♦ Dickerson, Charles
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Maintenance Dredging ♦ Hydraulic Cutterhead Dredge ♦ Underwater Sound Produced ♦ Stockton Deepwater ♦ Study Area ♦ Potential Impact ♦ Excavation Process ♦ Source Level ♦ Disposal Operation ♦ Sound Frequency Characteristic ♦ Analyze Underwater Sound ♦ Industry Seismic Survey ♦ Sound Pressure Level ♦ Underwater Sound ♦ Particular Interest ♦ Project Management Decision ♦ Underwater Noise ♦ Regulatory Agency ♦ Scant Scientific Literature ♦ Various Distance ♦ Small Hydraulic Cutterhead Dredge ♦ Stockton Deepwater Shipping Channel ♦ Important Knowledge Gap ♦ Recent Year ♦ Background Introduction ♦ Ambient Sound Source ♦ Construction Activity ♦ Pile Driving
Abstract PURPOSE: The purpose of this study was to record and analyze underwater sounds generated by a small hydraulic cutterhead dredge during maintenance dredging in the Stockton Deepwater Shipping Channel (SDWSC), California. Of particular interest was determining 1) the sound frequency characteristics of the excavation process, 2) the received sound pressure levels at various distances from the source, 3) the predicted source level, and 4) ambient sound sources in the study area. These data will fill important knowledge gaps and inform future dredging project management decisions. BACKGROUND/INTRODUCTION: In recent years, the potential impact of underwater sounds associated with dredging and disposal operations has come under increasing scrutiny by regulatory agencies. Underwater noise has been previously identified as a concern, but has primarily been linked to petroleum industry seismic surveys and construction activities such as pile driving (Richardson et al. 1995). In fact, the scant scientific literature pertaining to the effects of
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Publisher Date 2014-01-01