A detailed analysis of the surface wave radiation from two underground explosions (BILBY and SHOAL) and an earthquake near Fallon, Nevada, whose epicentre is only 60 km from SHOAL, indicates that: (1) at long periods the surface wave radiation from the earthquake can be explained by a pure quadrupole (double couple) source, but at higher frequencies the radiation pattern contains asymmetries wh...

We consider conformal vector models which could play the role of a cosmological dark radiation component. analyse propagation gravitational waves in presence this background and find suppression tensor transfer function at large scales. also that although metric is isotropic, anisotropies are imprinted power spectrum. In addition, fields induces net polarization wave and, for certain configurat...

The radiation of sound waves from partially lined duct is treated by using the mode-matching method in conjunction with Wiener-Hopf technique. solution obtained modification technique and involves an infinite series unknowns which are determined system linear algebraic equations. Numerical this for various values problem parameters, whereby effects these parameters on diffraction studied. A per...

The outgoing radiation at the top of the atmosphere (TOA) determines the net radiative heating of the earth's surface and atmosphere system. Variabilities of the TOA outgoing radiation depend on features of the earth's surface and atmosphere. The fundamental goal of the present study is to quantify the sensitivity of the outgoing radiation to those features in a sophisticated radiation model us...