Ya. Chapanov1, M. Temelkova1 1National Institute of Geophysics, Geodesy and Geography, Bulgaria  astro@bas.bg   Abstract  The solar activity cycles excite periodical and pseudo periodical variations of all Earth systems, including climate, water cycles, rainfalls, streamflows, groundwater etc. The water cycles have short term, seasonal, interannual and long term periodicities with different local revealing. The interannual […]

2010-552 DROUGHT CYCLES OVER SOUTH-EAST EUROPE FOR THE PERIOD 1870-2005 AND THEIR CONNECTION WITH SOLAR ACTIVITYYavor Chapanov 1, Daniel Gambis 21 Central Laboratory for Geodesy – BAS, Bulgaria2 Paris Observatory, France Abstract: The drought cycles over the South-East Europe are determined by means of the Palmer Drought Severity Index (PDSI) for the period 1870-2005 from […]

2010-192 LONG-PERIODICAL VARIATIONS OF EARTH ROTATION, DETERMINED FROM RECONSTRUCTED MILLENNIAL-SCALE GLACIAL SEA LEVELYavor Chapanov 1, Daniel Gambis 21 Central Laboratory for Geodesy – BAS, Bulgaria2 Paris Observatory,France  Abstract:The variations of the Earth rotation in time are caused by the gravitational influence of Moon, Sun and planets, displacements of matter on the Earth surface, inside the […]

2010-193 A MODEL OF GLOBAL WATER REDISTRIBUTION DURING SOLAR CYCLES, DERIVED BY ASTRONOMICAL DATAYavor Chapanov 1, Daniel Gambis 21 Central Laboratory for Geodesy – BAS, Bulgaria2 Paris Observatory, France  Abstract:The global hydrologic cycles are widely affected by climatic variations, which are mostly driven by solar-terrestrial influences. The existing hydrological time series describe in details the […]