| Concern over seismic exploration
Seismic work now underway in the Chukchi Sea in conjunction with marine
petroleum exploration is raising concerns among marine groups including the
Marine Connection and scientists. The biggest concern is the impact on
marine mammals, especially whale populations.
The Chukchi Sea is prime habitat for bowhead whales. The impact of potential
deflection of migratory patterns, disruption of communications,reproduction
and other social behavior among whales could have dire effects on the future
of the whales. The noise from air guns firing towards the sea floor for the
seismic tests will likely frighten whales in the area away from their
feeding areas as air guns can create extraordinarilyloud noises within the
oceans.
The permits went to Shell, ConocoPhillips and GX Technologies who should
follow the several restrictions and requirements that go along with the
seismic agreements. General mitigation measures outlined in the incidental
harassment
authorisation by the U.S. Minerals Management Service requires that
concentrations of whales be avoided. The oil companies have employed trained
observers, including Alaska Natives with subsistence hunting experience, to
identify whales in the area. However in these vast, turbulent waters, where
vision may be challenged by the weather and darkness, the question is how
many whales they may spot?
Oil and gas exploration in this critical habitat are very troubling as in
addition to disruption of normal movement and feeding by marine mammals, the
exploration and production of oil in these waters also pose a threat of oil
spills, which could be devastating to fish, birds and mammals, particularly
right whales, and their food supply. A 2003 Acoustical Society of America
report, written by two Australian scientists, along with another from the
University of Maryland, said it is unknown whether exposure to these air
guns has the potential to damage the ears of aquatic vertebrates.
12 percent of the Bering Sea's wildlife species are already at risk of decline or extinction due to complex problems ranging from commercial
fishing and global climate change to pollution. Recent research in the
Atlantic Ocean demonstrates that the sounds from seismic exploration can
travel as much as 1,863 miles through the ocean.
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