Dear Colleague,
On behalf of the convenors, I would like to bring to your attention the
following symposium which will take place this July 1999, at the
IUGG in Birmingham, UK (see http://www.bham.ac.uk/IUGG99/ ) and encourage
your participation. The Website gives information on abstract submission
(for which the deadline is 15 January 1999).
Please note that the symposium convenor will be accepting abstracts until
1/31/99.
Thank you for your consideration.
Regards, Jean
Insights into Earth System Science: Variations in the
Earth's Rotation and Its Gravitational Field
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
variety of timescales from minutes to millions of years. In addition, the mass
redistribution within the Earth produces variations in the Earth's
gravitational field (including geocenter) on a variety of spatial and temporal
scales. Highly accurate measurements of the Earth's gravity field made with
appropriate spatial and temporal sampling can thus be used to better
understand the processes that move mass within the Earth, and on and above its
surface. This symposium will address the implications of Earth
orientation variations, time-varying gravity (including geocenter), particularly as
it applies to the solid Earth, ocean and hydrosphere, cryosphere,
atmosphere and the interactions between the various components of the Earth
system. The use of geodetic and astronomical measurements analyzed
synergistically with complementary interdisciplinary data types will be stressed.
Convener: Dr. Jean Dickey (IAG)
Jet Propulsion Laboratory
California Institute of Technology
Mail Stop 238-332
4800 Oak Grove Drive
Pasadena, CA 91109-8099 USA
Tel: 1-818-354-3235
Fax: 1-818-393-6890
E-mail: [log in to unmask]
Dr. Brad Hager (IASPEI)
Massachusetts Institute of Technology
MS 54-622
Cambridge, MA 02139 USA
Tel: 617-253-0126
Fax: 617-253-1699
E-mail: [log in to unmask]
Dr. M. Kuhn (IAHS)
Institut fur Meteorologie und Geophysik
Universitat Innsbruck
Innrain 52
A-6020 Innsbruck, Austria
Tel: +43 512 5072183
Fax: +43 512 5072170
E-mail: [log in to unmask]
Dr. Jean-Louis .L. Le Mouël (IAGA)
Laboratoire de Geomagnetisme BP 89
4 Place Jussieu
75252 PARIS Cedex 05, France
Tel.: 33 1 44 27 37 77
Fax: 33 1 44 27 33 73
E-mail: [log in to unmask]
Dr. S. Suenderman (IAPSO)
University of Hamburg
Institute of Oceanography
Troplowitzwstrasse 7
22529 Hamburg, Germany
Tel: 49-40-41232606
Fax: 49-40-5605926
E-mail: [log in to unmask]
Dr. Roland Madden (IAMAS)
National Center For Atmospheric Research
PO Box 3000
Boulder, CO 80307 USA
Tel: 303-497-1360
Fax: 303-497-1137
E-mail: [log in to unmask]
Dr.Clark R. Wilson (IAG)
Code YS
NASA Headquarters
Washington, D.C. 20546 USA
Tel: 202-358-1373
Fax: 202-358-2770
E-mail: [log in to unmask]
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: [log in to unmask] *
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