*************************************************************************** IERS Message No. 14 August 30, 2001 *************************************************************************** Fall AGU/Special Session: Interaction between the Solid Earth and its Fluid Envelope: Insights via Earth Rotation and Mass Redistribution Studies Dear Colleagues: We are convening a special session ( G05: Interaction between the Solid Earth and its Fluid Envelope: Insights via Earth Rotation and Mass Redistribution Studies ) at the Fall 2001 AGU meeting, December 10-14 in San Francisco, as described below. We are soliciting papers on these topics. Please submit your abstract according to the instructions in the AGU website http://www.agu.org and send me a courtesy copy. The deadlines for abstract are August 31 for mail and September 6 for on-line submittals. AGU allows only one first author contributing paper. Your AGU membership number (or that of a sponsor) and payment of abstract fee ($50 for credit card and $60 for check) are required. Thank you for your consideration. Regards, Jean Dr. Jean O. Dickey Principal Member of the Technical Staff Supervisor, Space Geodetic Science & Applications Group Jet Propulsion Laboratory/Caltech Mail Stop 238-332 4800 Oak Grove Dr. Pasadena, CA 91109-8099 Office: +1 818-354-3235 Fax: 818-393-6890 E-mail: jean.o.dickey@jpl.nasa.gov G05: Interaction between the Solid Earth and its Fluid Envelope: Insights via Earth Rotation and Mass Redistribution Studies ---------------------------------------------------------------- **** Joint with H (hydrology) A (atmospheres) OS (ocean sciences) T (tectonophysics) SIP (snow, ice, permafrost) GP (geomagnetism) DI (study of the Earth's Deep Interior) Index terms: 1241 Rotational variations (geodesy) 1223 Ocean/Earth/atmosphere interactions (geodesy) 1213 Earth's interior-dynamics (geodesy) 3300 Meteorology and atmospheric dynamics 1655 Water cycles (global change & hydrology) Jean O. Dickey, Olivier de Viron, Geoffrey Blewitt, and Benjamin F. Chao The Earth is a dynamic system: it has a fluid, mobile atmosphere and oceans, a continually changing distribution of ice, snow, and groundwater, a fluid core undergoing hydromagnetic motion, a mantle undergoing both thermal convection and rebound from glacial loading of the last ice age, and mobile tectonic plates. Both the moment of inertia changes and the motion affect a number of global geodynamical quantities, including Universal Time, length-of-day, polar motion, and nutation (collectively referred to as Earth Rotation or Earth Orientation). Highly accurate observations of Earth Orientation provide a unique and truly global measure of natural and man-made changes in the atmosphere, oceans, and interior of the Earth on a broad variety of timescales; in addition, mass redistribution within the Earth produces variations in the Earth's gravitational field (including geocenter) which can thus be used to better understand the processes that move mass within the Earth, and on and above its surface. This session will address the implications of Earth orientation variations, and mass redistribution (including geocenter, loading, and time variable gravity), particularly as they apply to the solid Earth, ocean and hydrosphere, cryosphere, atmosphere and the interactions between the various components of the Earth system. We welcome presentations on prospects for improving our knowledge of mass redistribution from space missions including GRACE (scheduled to launch in November 2001), and presentations providing interdisciplinary insight on what such measurements might imply for our understanding of the water cycle, interactions between Earth's various spheres, and global climate change. We encourage contributions on the latest models from the areas of mass redistribution, including polar snow and ice models, continental-scale hydrology, and models of mass transport in the oceans and atmosphere. Convenors: Jean O. Dickey Mail-stop 238-331, Jet Propulsion Laboratory, Oak Grove Drive, 4800, 91108 Pasadena, CA.; e- mail: jean.o.dickey@jpl.nasa.gov; phone: 818-354- 3235; fax: 818-393-6890 Olivier de Viron Royal Observatory of Belgium, 3 Avenue Circulaire. B-1180 Brussels, Belgium; email: o.deviron@oma.be; phone: +32 2 373 03 12; fax: +32 2 374 98 22 Geoffrey Blewitt University of Nevada, Reno Mail Stop 178 Reno Nevada 89557 Tel: 775-784-6691 x171 Fax: 775-784-1709 Email: gblewitt@unr.edu Benjamin F. Chao Space Geodesy Branch, Code 926 NASA's Goddard Space Flight Center Greenbelt Maryland 20771 Tel: 302-614-6104 Fax: 301-614-6099 Email: chao@bowie.gsfc.nasa.gov *************************************************************************** IERS Messages are edited and ditributed by the IERS Central Bureau. To subscribe or unsubscribe, please write to <central_bureau@iers.org>. Archives: http://www.iers.org/iers/publications/messages/ ***************************************************************************