The interaction of tidal currents with sea-floor topography results in the radiation of internal gravity waves into the ocean interior. These waves are called internal tides and their dissipation due to nonlinear wave breaking and concomitant threedimensional turbulence could play an important role in the mixing of the abyssal ocean, and hence in controlling the large-scale ocean circulation. A...

Abstract: Improvements in high resolution small forward looking sonar (FLS) and computer processing have made it possible to develop an obstacle avoidance system (OAS) for small diameter Autonomous Underwater Vehicles (AUV). An AUV with such a system can maneuver around unanticipated obstacles that may be proud of the ocean floor. This ability can prevent serious damage to the vehicle or the en...

A theory is presented of the generation and propagation of the two and the three dimensional tsunamis in a shallow running ocean due to the action of an arbitrary ocean floor or ocean surface disturbance. Integral solutions for both two and three dimensional problems are obtained by using the generalized Fourier and Laplace transforms. An asymptotic analysis is carried out for the investigation...

In this document we will discuss three types of waves: wind-driven waves, tides and tsunamis. When the wind blows on the surface of the ocean it produces ripples, waves, and swell. Gravitational forces (mostly from the moon and sun) plus centrifugal forces in the solar system produce tides. Tectonic forces such as earthquakes that cause vertical displacements of the ocean floor, submarine volca...

The Ocean Drilling Program (ODP) has amassed large databases (including paleontological) as a result of its research on the geology of the ocean floor. ODP has begun to present its research results in electronic proceedings that will soon completely displace paper publications. Palaeontologia Electronica (PE) has pioneered the concept of an all-electronic paleontological journal with no paper e...