The principal long term goal of this project is to develop a practical, portable, nested, tidal data assimilation scheme which makes use of all available data (e.g., altimetry data, current moorings, coastal radar) to constrain barotropic and baroclinic tides (especially tidal currents) in coastal areas and shallow seas. A second long term goal is to develop more efficient methods for assimilat...

Indoor radon activities were measured during a period of 6 months, as well as several physical environmental variables (temperature, pressure, humidity and rainfall). The location was a small room at an administrative building of the University of Coimbra, usually undisturbed by human activities and situated over bedrock of low-uranium Triassic red sandstones. A low average activity of radon wa...

A highly accurate two-color interferometer with automatic correction of the refractive index of air was developed for crustal strain observation. The two-color interferometer, which can measure a geometrical distance of approximately 70 m, with a relative resolution of 2 × 10 −9 , clearly detected a change in strain due to earth tides in spite of optical measurement in air. Moreover, a large st...

tidal triggering mechanism, ibecause a similar process appears to trigger terrestrial volcanic eruptions (4), and perhaps earthquakes as well (5). The terrestrial situation is somewhat obscured, however, because of the complicating loading effects of oceanic and atmospheric tides, ocean currents, and atmospheric circulation. The moon has provided another clear, albeit luxurious, view of the ear...

T he past year has been truly extraordinary. Not only has there been astonishing medical and public health interest in cholesterol, but the term cholesterol has been brought by the media into common culture and consciousness in quite surprising ways. How did this happen? And what are its implications for science, for medicine, and for public health and policy? This evening I will try to address...

We present a new homogeneous sample of 32 spectroscopic binary orbits in the young (∼ 150 Myr) main-sequence open cluster M35. The distribution of orbital eccentricity vs. orbital period (e − log(P )) displays a distinct transition from eccentric to circular orbits at an orbital period of ∼ 10 days. The transition is due to tidal circularization of the closest binaries. The population of binary...