The general relativistic Lense-Thirring effect can be detected by means of a suitable combination of orbital residuals of the laser-ranged LAGEOS and LAGEOS II satellites. While this observable is not affected by the orbital perturbation induced by the zonal Earth solid and ocean tides, it is sensitive to those generated by the tesseral and sectorial tides. The assessment of their influence on ...

In recent years there have been massive inundations of pelagic Sargassum, known as golden tides, on the beaches of the Caribbean, Gulf of Mexico, and West Africa, causing considerable damage to the local economy and environment. Commercial exploration of this biomass for food, fuel, and pharmaceutical products could fund clean-up and offset the economic impact of these golden tides. This paper ...

The disruptive effect of galactic tides is a textbook example of gravitational dynamics. However, depending on the shape of the potential, tides can also become fully compressive. When that is the case, they might trigger or strengthen the formation of galactic substructures (star clusters, tidal dwarf galaxies), instead of destroying them. We perform N -body simulations of interacting galaxies...

The Canal de Passagem (CP), Vitória ES, is an estuarine system undergoing a process of environmental degradation due to the discharge of in natura and semi-treated sewage. The surrounding local community's use of the estuarine resources conflicts with environmental quality and this offers risks to public health. The objective of this study was 1. to evaluate the distribution of fecal coliforms ...

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...

In the summer of 1996, an experiment was conducted off the coast of Portugal to study the effects of internal tides on sound propagation. This experiment—called INTIMATE '96 (Internal Tide Investigation by Means of Acoustic Tomography Experiment)—has provided a great deal of insight about the variability of pulse transmission over space and time. In contrast to a common view of shallow-water pr...

Continuing improvements in human language algorithms, coupled with improvements in digital storage and processing, inspire growing confidence in multilingual information access systems. Systems exist to transcribe broadcast news, segment broadcasts into individual stories and sort them by topic. These technologies, useful in isolation, are now being combined to produce intelligent multilingual ...

One year of continuous data from two eddy-flux towers established along an elevation gradient in coastal Shanghai was analyzed to evaluate the tidal effect on carbon flux (Fc) over an estuarine wetland. The measured wavelet spectra and cospectra of Fc and other environmental factors demonstrated that the dynamics of Fc at both sites exhibited a tidal-driven pattern with obvious characteristics ...