G24A:
Earth and Planetary Rotation: Improving Theories, Models, and Observations II


Session ID#: 8434

Session Description:
Variations in the rotation, precession, and nutation of the Earth and other planets are caused by processes both external and internal to them. For the Earth, the increasing accuracy and temporal resolution of the observations provided by current and next generation measurement systems allow smaller amplitude and higher frequency signals to be observed, motivating improvements in both theories and models of Earth rotation variations. For the other planets, new missions to them will allow better understanding of their rotational variations. These improved theories, models, and observations allow greater understanding of the many processes that are causing the rotation, precession, and nutation of the Earth and other planets to change. This session will be a forum for discussing the improved theories, models, and observations of variations in Earth and planetary rotation.
Primary Convener:  Richard S Gross, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States
Conveners:  Aleksander Brzezinski, Warsaw University of Technology, Warszawa, Poland, Veronique M A Dehant, Royal Observatory of Belgium, Brussels, Belgium and Jose M. Ferrandiz, University of Alicante, UAVAC, Applied Mathematics Dept., Alicante, Spain
Chairs:  Richard S Gross, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States and Veronique M A Dehant, Royal Observatory of Belgium, Brussels, Belgium
OSPA Liaison:  Richard S Gross, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States

Cross-Listed:
  • P - Planetary Sciences
Index Terms:

1239 Earth rotation variations [GEODESY AND GRAVITY]
5450 Orbital and rotational dynamics [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
5744 Orbital and rotational dynamics [PLANETARY SCIENCES: FLUID PLANETS]

Abstracts Submitted to this Session:

Systematic Effects in Earth Orientation Parameters Determined by VLBI (Invited) (66863)
Robert Heinkelmann, GFZ Potsdam, Potsdam, Germany and Harald Schuh, German Research Centre for Geosciences, Helmholtz-Zentrum, DeutschesGeoforschungsZentrum (GFZ), Section 1.1: Space Geodetic Techniques, Potsdam, Germany
Impact of a priori Modeling Errors on the Estimate of UT1 from IVS Intensives. (67505)
John M Gipson1, Ingrid Strandberg2 and Armin Azhirnian2, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)Chalmers University of Technology, Gothenburg, Sweden
Earth's core contribution to variations in length of day (Invited) (60225)
Mathieu Dumberry, University of Alberta, Edmonton, AB, Canada and Nicolas Gillet, ISTerre Institute of Earth Sciences, Grenoble, France
Using Constraints from Satellite Gravimetry to Study Meteorological Excitations of the Chandler Wobble for an Earth Model with Frequency-dependent Responses (64049)
Wei Chen, Collaborative Innovation Center of Geospatial Technology / School of Geodesy and Geomatics, Wuhan University, China, Wuhan, China, Jiancheng Li, Wuhan University, Wuhan, China, Jim Ray, Retired, Washington, DC, United States, Minkang Cheng, Univ Texas Austin, Austin, TX, United States, Jianli Chen, University of Texas at Austin, Austin, TX, United States and Clark R Wilson, University of Texas at Austin, Department of Geological Sciences, Austin, TX, United States

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