Ocean Noise
The animated noise spectrum shown below is a simple animated version of what has become something of an iconic image in understanding the impact of man-made (anthropogenic) and natural noise sources in the ocean. The noise spectrum is easy to use in a "casual" manner. However, there are subtleties in its application which demand careful explanation. The user also needs a degree of competence in handling issues such as the interplay between source spectral width, receiver bandwidth and temporal and spatial resolution. These matters are central to the teaching philosophy employed in the three Seiche Underwater Acoustics courses.
This and similar images are copyright Seiche Ltd. Reproducing the image after simply changing its colours does NOT void our copyright. Having said that, we are very happy to have these images used for illustrative purposes in technical and teaching documents, on web-sites and so on. We would request, however, that due credit is given, either in the form of a copyright statement: © Seiche Ltd. 2006 or, if more appropriate, as a text reference thus: Coates, R., The Advanced SONAR Course, Seiche (2002) ISBN 1-904055-01-X