@article{Rajner2011jugowicepublikacja,

volume	=	{9},
number	=	{4/168},
pages	=	{449-455},
author	=	{Rajner, Marcin and Olszak, Tomasz and Rogowski, Jerzy B. and Walo, Janusz},
year	=	{2012},
date	=	{2012-12-01},
month	=	{dec},
title	=	{The influence of continental water storage on gravity rates estimates: case study using absolute gravity measurements from area of Lower Silesia, Poland},
journal	=	{Acta geodynamica et geomaterialia},

}

In order to utilize the absolute gravity (ag) measurements in terms of tectonic study it is necessary to reduce all disturbing environmental and instrumental effects. Many of those can be easily modelled and this step is done routinely during measurements (i.e. tide, polar motion, ocean tidal loading). Other remains in data and there is a lack of conventional models for them. Significant gravity variation is associated with changes of soil water at global scale. We study this effect for the Lower Silesia (South-western Poland) territory. Computed gravity changes can reach up to 2 µgal peak-to-peak amplitude with seasonal time scale. This effect is beyond of accuracy of modern ballistic gravimeter. Using real data collected with fg5 gravimeter we show here that neglecting of this phenomenon can lead to serious misinterpretation in term of secular gravity changes. This is emphasized especially when only sparse data of a few year time span is at our disposal. No attempt of modelling of local hydrology impact on effect was made, while in this study we concentrate on large scale water storage influence on measured gravity.