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Climate Change 2016
October 27-29, 2016
Volume 7, Issue 9(Suppl) J Earth Sci Clim Change
ISSN: 2157-7617 JESCC, an open access journal
conferenceseries .com
October 24-26, 2016 Valencia, Spain
World Conference onClimate Change
Variations of geoid undulations from satellite data of GRACE for Israel and surrounding countries
Jaroslav Klokocnik1, Jan Kostelecký2,3 and Ales Bezděk1
1Czech Academy of Sciences, Czech Republic
2Research Institute of Geodesy, Topography and Cartography, Czech Republic
3Technical University of Ostrava, Czech Republic
S ince 2002, the US-German GRACE satellite mission (Gravity Recovery and Climate Experiment) has been providing a
precise survey of the Earth's time-variable gravity field, with unprecedented temporal and spatial sampling. GRACE time-
variable gravity field is a tool for measuring temporal and spatial variations of the mass redistribution within the Earth system.
Time variability of the gravity field is presented here as “monthly gravity field models” of the geoid undulations. We show their
regional variations in Israel and surrounding countries which have seasonal and secular character, connected with desiccation
of underground water in the area. During 13 year interval of the data from GRACE, the secular decrease of the level of the
waters in this area became evident. This result supports warnings coming from other data and points to the existence of a great
danger not only for this area.
Biography
Jaroslav Klokocnik is a University Professor of Geodesy at the Czech Technical University in Prague and Emeritus research worker in Astronomical Institute of the
Czech Academy of Sciences, Prague-Ondrejov. His specialization is Satellite Dynamics and the Earth’s gravity field studies. He published more than 200 research
papers. He worked in Germany, USA, Egypt and other countries.
Jaroslav Klokocnik et al., J Earth Sci Clim Change 2016, 7:9(Suppl)