2014 Seismic Exploration News Reports
High frequency multi-beam echo sounders are often used to scare away whales and dolphins as a precurcor to using a controlled seismic source of energy, such as a specialized air gun or a seismic vibrator to map the ocean floor during exploration. Due to the extremely high level of noise produced by seismic air-guns (that endanger large whales) ramping-up noise levels over hours of start-up is a legal requirement. The use of echo sounders avoids this delay. However, even the echo sounder can be dangerous to smaller whales and dolphins if it scares the animals into situations where they can die. This is just as serious of an issue.
Reports on Seismic Exploration from:
- Yahoo News
- Google News
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Photo: More than 650 pilot whales beached themselves along Farewell Spit at the tip of the South Island, New Zealand in two mass strandings. About 350 whales died, including 20 that were euthanized. Another 100 were refloated by volunteers and more than 200 swum away unassisted. [10 February, 2017] Photographer: Tim Cuff/New Zealand Herald.
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