Satellite traces, range spread-F occurrence, and gravity wave propagation at the southern anomaly crest

Internal-Gravity wave propagation in a range-dependent waveguide with forcing at the bottom

We compute the propagation of waves forced at the bottom of an inhomogeneous stratified moving fluid, using vertical normal modes and horizontal rays. The problem is separated into a range-dependent nonlinear eigenproblem that defines the vertical structure of the solution and a set of coupled inhomogeneous ordinary differential equations with nonconstant coefficients in the horizontal. Under t...

Effect of equatorial ionization anomaly on the occurrence of spread-F

The unique geometry of the geomagnetic field lines over the equatorial ionosphere coupled with the E– W electric field causes the equatorial ionization anomaly (EIA) and equatorial spread-F (ESF). Ionosonde data obtained at a chain of four stations covering equator to anomaly crest region (0.3 to 33 °N dip) in the Indian sector are used to study the role of EIA and the associated processes on t...

COMMISSION F: Wave Propagation and Remote Sensing

Marine gravity anomaly from Geosat and ERS 1 satellite altimetry

Closely spaced satellite altimeter profiles collected during the Geosat Geodetic Mission (-6 km) and the ERS 1 Geodetic Phase (8 km) are easily converted to grids of vertical gravity gradient and gravity anomaly. The long-wavelength radial orbit error is suppressed below the noise level of the altimeter by taking the along-track derivative of each profile. Ascending and descending slope profile...

Commission F : Wave propagation and Remote Sensing

F1.1 Terrestrial Fixed Radio Systems Active studies of rain attenuation characteristics are continuing for developing broadb quasi-millimeter wave band. It is based on a trend that the use of microwave band gradually from the fixed use to the mobile use. Results of those stu and systems above has been changing dies will be reflected in developing a multipoint-to-multipoint system, a mesh type w...