As a compact binary inspirals due to the emission of gravitational waves, its orbital period decreases continuously down to 1 ms, its value at coalescence. During the last part of the inspiral, the two stars are close together, and their tidal interactions become strong. Neutron stars have many normal modes (core g-modes, crustal discontinuity modes, shear modes, etc.) whose periods lie in the ...

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...

J. C. Maréchal*, M. P. Sarma, S. Ahmed and P. Lachassagne Indo-French Centre for Groundwater Research, National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India Bureau de Recherches Géologiques et Minières–French Geological Survey, Service EAU, Unite RMD, 1039 avenue de Pinville, F-34000 Montpellie...