Acoustics: Noise Impact Assessment
Responses to anthropogenic noise are species-specific. To determine safe sound level ranges, JASCO's scientists and bioacousticians record and assess the physical properties of sound as they relate to distance, time, depth, and nature of environment. Information obtained from biological analysis or observation is then matched to the acoustic measurements, effectively defining the range of noise considered necessary to minimize impacts to wildlife.
In 2002 JASCO participated in a study of sound characteristics in artificial polar bear dens on Flaxman Island, Alaska. Our scientists measured the acoustic and vibration levels in the dens resulting from oil and gas activities including the use of various heavy equipment (helicopters, trucks, Sno-cats etc.) and blasting activities. Data regarding hearing thresholds of a polar bear is not readily available. Hence, determination of impacts of anthropogenic activities on denning polar bears is difficult to ascertain at this time except through direct observation of behavior and denning practices.
Acoustic Modeling / Noise Impact Assessment Includes
- Seismic exploration studies
- Drilling platforms
- Dredging equipment
- Pile driving
- Military blasting exercises
- Low flying aircraft
- Sonar systems
- Report preparation
JASCO employs acoustic scientists, bioacousticians, engineers, and biologists to provide a full solution for species-specific research and/or general monitoring/prediction studies. Should the need arise, JASCO readily partners with industry experts for more comprehensive projects.