—Red Sea is one of the most important repositories
of the marine biodiversity in the world. Red Sea oil and gas
reserves are estimated to be around 100 billion barrel of oil
equivalent necistate the use of offshore structure to extract it.
Most of offshore drilling rigs and production platforms are
found on group of large diameter piles which are driving into
sea bed producing high amount of underwater noise.
Underwater noise emitted during pile construction can mask
biologically relevant signals for marine mammals. This noise
might lead to behavioral reactions, harassment, and at very
high levels can injure or even kill the mammal.
Range-dependent Acoustic Model, Rogers Model, was used to
assess underwater noise propagation of offshore pile driving
taking into account seabed bathymetry, temperature, and
salinity. It was found that an offshore pile driven with 235 kJ
rated energy diesel hammer can cause behavioral disturbance
to the marine mammal within a distance of 1000 m from the pile
location; temporary threshold shift within a distance of 30 m;
permanent threshold shift within a distance of 50 m; and injury,
or even death, within a distance of 20 m.
—Red sea marine mammals, pile driving noise,
underwater noise propagation, threshold levels, rogers model.
W. A. Dawoud is with Environmental Engineering Department, School
of Energy and Environmental Engineering, Egypt-Japan University of
Science and Technology (E-JUST), New Borg Al-Arab City, Postal Code
21934, Alexandria, Egypt (e-mail: firstname.lastname@example.org).
A. M. Negm is with Environmental Engineering Department, School of
Energy and Environmental Engineering, E-JUST, Seconded from Zagazig
University, Egypt (e-mail: email@example.com, firstname.lastname@example.org).
N. M. Saleh is with Faculty of Engineering at Shoubra, Benha University,
Egypt (e-mail: email@example.com).
M. F. Bady is with Environmental Engineering Department, School of
Energy and Environmental Engineering, E-JUST, Seconded from Assiut
University, Egypt (e-mail: firstname.lastname@example.org).
Cite: Waled A. Dawoud, Abdelazim M. Negm, Nasser M. Saleh, and Mahmoud F. Bady, "Impact Assessment of Offshore Pile Driving Noise on Red Sea Marine Mammals," International Journal of Environmental Science and Development vol. 7, no. 1, pp. 10-15, 2016.