We consider the tidal interaction of a binary consisting of a fully convective primary star and a relatively compact mass. Using a normal mode decomposition we calculate the evolution of the primary angular velocity and orbit for arbitrary eccentricity. The dissipation acting on the tidal perturbation is assumed to result from the action of convective turbulence the effects of which are assumed...

Close tidal interactions of stars with a central massive black hole (MBH) or with other stars in the high density cusp around it can affect a significant fraction of the stellar population within the MBH radius of influence. We consider three strong processes that have the potential of modifying stellar structure and evolution there. (1) Tidal spin-up by hyperbolic star-star encounters. (2) Tid...

Banjarmasin is known as a tidal waterfront city and it is called City of a Thousand Rivers. The city level was approximately -16 cm below the sea level and almost a swamp-land. The urbanization and the city development programs have changed the city’s physical and spatial plan from a wetland to a mainland structure. The issues of the city's transformation have changed the city structure from th...

Introduction Reference Model #1 is a tidal turbine operating in a narrow, tidal channel. The site is a generalized version of Tacoma Narrows, Puget Sound, Washington. The resource is a mixed, mainly semidiurnal tidal regime with two ebbs and floods each day of unequal strength (i.e., a diurnal inequality in which a strong ebb/flood exchange is followed by a weak exchange). The diurnal inequalit...

Background and aims A created tidal freshwater wetland, with no extant seed bank, was monitored to evaluate the colonization potential of a tidal river, vegetation and seed bank changes, and also species persistence. Methodology The 32.3-ha mitigation, adjacent to the Delaware River, was completed in 1994. Three sites, with differing completion dates, and three locations (channel edge, midpoint...

We derive expressions for the tidal field exerted by a spherically symmetric galaxy having an extended mass distribution, and use our analysis to calculate tidal perturbations and heating of stars in a globular cluster or a satellite galaxy orbiting in the external potential. We consider a Hernquist model and several power-law models for the primary. We integrate the tidal force over accurate o...

We numerically study the tidal instability of accretion discs in close binary systems using a two-dimensional SPH code. We find that the precession rate of tidally unstable, eccentric discs does not only depend upon the binary mass ratio q. Although the (prograde) disc precession rate increases with the strength of the tidal potential, we find that increasing the shear viscosity ν also has a si...

The following second definition represents a more up-to-date description of geodesy given by the Committee on Geodesy of the U. S. National Academy of Sciences in 1978. • Establishment and maintenance of national and global three dimensional geodetic networks • Measurement and analyses of geodynamic phenomena (earth rotation, earth tides, crustal movements, etc.) • Determination of the earth's ...

Thanks for the wonderful item on the 1927 Mississippi River flood (1). I grew up in New Orleans and on the Gulf Coast of Mississippi, hearing of storms and wading through floods all of my life, but no one had ever talked about the 1927 events, and this critical southern event was not taught in any history courses at my schools. Reading John Barry’s Rising Tide: The Great Mississippi Flood of 19...

After volcanic explosions or tidal waves had defaunated several islands near New Guinea, bird species number rapidly returned to equilibrium on coral islets and rapidly returned to quasi-steady-state values limited by regrowth of vegetation in lowland forest of larger islands. However, reequilibration in montane forest has been limited by slow dispersal of the birds. Colonists have been drawn d...