Underwater noise level in Klaipėda Strait, Lithuania

DYNAMICAL SIMULATION OF UNDERWATER SOUND PROPAGATION IN THE HORMOZ STRAIT

Providing an illustration of sound propagation in the Hormoz Strait ,this paper is about acoustic wave propagation in shallow water for a harmonic point source with low frequency, less than 1000 and solution of a homogenous Helmholtz equation using parabolic equation. C++ programming is used to solve Helmholtz equation [9] and MATLAB software is used to illustrate figures and animate them [6], ...

Underwater Ambient Noise

New Arrivals: An Indicator for Non-indigenous Species Introductions at Different Geographical Scales

1 Marine Science and Technology Centre, Klaipėda University, Klaipėda, Lithuania, 2 Open Access Centre for Marine Research, Klaipėda University, Klaipėda, Lithuania, 3 GoConsult, Hamburg, Germany, 4 Marine Research Center, Finnish Environment Institute, Helsinki, Finland, 5 Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy, 6 Marine Organism Investigations, Killa...

Underwater noise levels in UK waters

Underwater noise from human activities appears to be rising, with ramifications for acoustically sensitive marine organisms and the functioning of marine ecosystems. Policymakers are beginning to address the risk of ecological impact, but are constrained by a lack of data on current and historic noise levels. Here, we present the first nationally coordinated effort to quantify underwater noise ...

Underwater temporary threshold shift in pinnipeds: effects of noise level and duration.

Behavioral psychophysical techniques were used to evaluate the residual effects of underwater noise on the hearing sensitivity of three pinnipeds: a California sea lion (Zalophus californianus), a harbor seal (Phoca vitulina), and a northern elephant seal (Mirounga angustirostris). Temporary threshold shift (TTS), defined as the difference between auditory thresholds obtained before and after n...