landslides and slope instabilities are major hazards for human activities often causing economiclosses and property damages. sikan river basin (ilam province) due to the topography, tectonic,lithology, and climate has enough potential for occurrence of this phenomenon. the objectives of thisstudy were to determine effective parameters controlling the landslide occurrence and to preparezonation ...

Geophysical Fluid Dynamics (GFD) came of age in the 1950s and 1960s, with the mathematically inspired work of Charney, Lorenz, Stommel, Veronis and von Neumann, among others. In the last twenty years or so, mathematical, statistical and numerical developments for the Navier-Stokes equations and basic geophysical fluid dynamics models are stimulating a deepening and broadening of its central con...

As altimeter satellites approach coastal areas, the number of valid sea surface height measurements decrease dramatically because of land contamination. In recent years, different methodologies have been developed to recover data within 10–20 km from the coast. These include computation of geophysical corrections adapted to the coastal zone and retracking of raw radar echoes. In this paper, we ...

An empirical algorithm XWAVE to derive significant wave height from high resolution TerraSAR-X (TS-X) and Tandem-X (TD-X) has been developed. The algorithm is created especially for spaceborne X-band SAR data without needing a priori information. TS-X scenes were acquired in the over buoys located at the coast of United States of America and Canada and including Hawaii islands. Integral wave pa...

Parameterization of vertical diffusion and the atmospheric boundary layer height determination in the EMEP model A. Jeričević, L. Kraljević, B. Grisogono, and H. Fagerli Meteorological and Hydrological Service of Croatia, Zagreb, Croatia Andrija Mohorovičić Geophysical Institute, Department of Geophysics, Faculty of Science, University of Zagreb, Croatia Norwegian Meteorological Institute, Oslo...

Model calculations indicate that the lower ionosphere of Saturn is controlled by photochemical processes, with basic features similar to the Jovian ionosphere. The scale height of the upper ionosphere is large (•3350 km). A peak electron density of •10•cm -s 2250 km above a 10•9cm -a reference level is expected assuming an eddy coefficient at the homopause of 1.3 x 10øcmas -• and a relatively h...

The Satellite Navigation and Positioning (SNAP) group at The University of New South Wales has been conducting research into high precision attitude determination using a multi-antenna single-frequency GPS array, aided by low grade angular rate gyros. The objective of the research is to develop an accurate, reliable attitude sensor solution at an affordable cost which can be implemented on UAVs...