Earth Rotation: An Example to Teach Rigid Body Motion and Environmental Monitoring - A Fallout of the Exploitation of LARES Satellite Data

Antonio Paolozzi; Erricos Pavlis; Claudio Paris; Giampiero Sindoni; Ignazio Ciufolini

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Paper

Earth Rotation: An Example to Teach Rigid Body Motion and Environmental Monitoring - A Fallout of the Exploitation of LARES Satellite Data

Topics: Learning by Example

In Proceedings of the 8th International Conference on Computer Supported Education - Volume 2: CSEDU, 339-346, 2016 , Rome, Italy

Authors: Antonio Paolozzi ¹ ; Erricos Pavlis ² ; Claudio Paris ³ ; Giampiero Sindoni ⁴ and Ignazio Ciufolini ⁵

Affiliations: ¹ Sapienza University of Rome and Museo Storico della Fisica e Centro Studi e Ricerce Enrico Fermi, Italy ; ² University of Maryland, United States ; ³ Museo Storico della Fisica e Centro Studi e Ricerce Enrico Fermi and Sapienza University of Rome, Italy ; ⁴ Sapienza University of Rome, Italy ; ⁵ Università del Salento and Museo Storico della Fisica e Centro Studi e Ricerce Enrico Fermi, Italy

Keyword(s): Earth Rotation, Gravitation, Environmental Changes, Satellite Laser Ranging.

Abstract: The use of satellite laser ranging in combination with other space geodetic techniques allows us to determine Earth’s motion with unprecedented accuracy, which is not as simple as usually described in basic textbooks. Besides rotation and revolution there is a wobble of the rotation axis that can be derived by the torque free case in rigid body dynamics. The presence of gravitational perturbations complicates the motion and considering Earth as non-rigid introduces even more variations in the basic Earth motion theory. What is interesting is that also the mass redistribution of air and water on the planet can affect the motion of Earth’s rotational axis. Thanks to the millimetre accuracy achievable today, it is possible to correlate very small anomalous rotational axis displacements with global environmental changes such the change in ice melting. The paper will show the experimental motion of the Earth rotation axis and interpret it with the use of the Euler rigid body equations of motion, outlining also the effects of the gravitational perturbations of other bodies in the solar system and of the global climate changes on the Earth rotational axis. (More)

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Paper citation in several formats:

Paolozzi, A., Pavlis, E., Paris, C., Sindoni, G. and Ciufolini, I. (2016). Earth Rotation: An Example to Teach Rigid Body Motion and Environmental Monitoring - A Fallout of the Exploitation of LARES Satellite Data. In Proceedings of the 8th International Conference on Computer Supported Education - Volume 2: CSEDU; ISBN 978-989-758-179-3; ISSN 2184-5026, SciTePress, pages 339-346. DOI: 10.5220/0005807103390346

@conference{csedu16,
author={Antonio Paolozzi and Erricos Pavlis and Claudio Paris and Giampiero Sindoni and Ignazio Ciufolini},
title={Earth Rotation: An Example to Teach Rigid Body Motion and Environmental Monitoring - A Fallout of the Exploitation of LARES Satellite Data},
booktitle={Proceedings of the 8th International Conference on Computer Supported Education - Volume 2: CSEDU},
year={2016},
pages={339-346},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005807103390346},
isbn={978-989-758-179-3},
issn={2184-5026},
}

TY - CONF

JO - Proceedings of the 8th International Conference on Computer Supported Education - Volume 2: CSEDU
TI - Earth Rotation: An Example to Teach Rigid Body Motion and Environmental Monitoring - A Fallout of the Exploitation of LARES Satellite Data
SN - 978-989-758-179-3
IS - 2184-5026
AU - Paolozzi, A.
AU - Pavlis, E.
AU - Paris, C.
AU - Sindoni, G.
AU - Ciufolini, I.
PY - 2016
SP - 339
EP - 346
DO - 10.5220/0005807103390346
PB - SciTePress