Assessment of Marine Mammal Impact Zones for Use of Military Sonar in the Baltic Sea
| Autor: | Torbjörn Johansson, Mathias H. Andersson |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
030110 physiology
0106 biological sciences 0301 basic medicine Sound propagation Technical specifications 010603 evolutionary biology 01 natural sciences Sonar Fishery 03 medical and health sciences Sonar system Marine mammal Behavioral response Baltic sea Environmental science Environmental impact assessment |
| Zdroj: | The Effects of Noise on Aquatic Life II ISBN: 9781493929801 |
| Popis: | Military sonars are known to have caused cetaceans to strand. Navies in shallow seas use different frequencies and sonar pulses, commonly frequencies between 25 and 100 kHz, compared with most studied NATO sonar systems that have been evaluated for their environmental impact. These frequencies match the frequencies of best hearing in the harbor porpoises and seals resident in the Baltic Sea. This study uses published temporary and permanent threshold shifts, measured behavioral response thresholds, technical specifications of a sonar system, and environmental parameters affecting sound propagation common for the Baltic Sea to estimate the impact zones for harbor porpoises and seals. |
| Databáze: | OpenAIRE |
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