[Alumnos] HOY 13 hs. - Seminario FCAGLP - Andreas Güntner

[secyt en fcaglp.fcaglp.unlp.edu.ar]

Hola a todos,

Les recordamos que hoy tendremos el siguiente seminario a las 13 hs.  
en el Salón Meridiano.
Los esperamos.

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Secretaría de Ciencia y Técnica
FCAGLP

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Andreas Güntner
German Research Centre for Geosciences (GFZ Potsdam, Germany)

Título: Monitoring water storage changes with ground- and  
satellite-based gravimetry

Resumen:
In this lecture, I will give an overview on recent research activities  
in the field of hydro-gravimetry. Variations of water storage on or  
below the Earth surface are related to mass variations, which in turn  
cause variations of the Earth’s gravity field. By monitoring the  
time-variable gravity field of the Earth, the satellite missions GRACE  
(since 2002) and its successor GRACE-FollowOn (to be launched in  
2017), provide unique integrative information on the hydrological  
cycle at the global scale, and for large river basins and aquifers.  
Similarly, high-precision measurements with gravimeters on the ground,  
in particular with superconducting gravimeters, allow for monitoring  
water storage changes at the local scale of several 100 meters around  
the instrument. I will illustrate the measurement principles of  
time-lapse gravimetry from ground and space, and present examples of  
hydrological applications for assessing the water balance, long-term  
changes in the hydrological cycle, or the impact of hydrological  
extreme events.