The worldwide character of the 1969–1970 impulse of the secular acceleration rate |
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| Authors: | Jean-Louis Le Mouël Joël Ducruix Chau Ha Duyen |
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| Institution: | Institut de Physique du Globe, Université Pierre et Marie Curie, 4 Place Jussieu, 75230 Paris Cedex 05 France |
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| Abstract: | This paper continues earlier studies to ascertain whether the distribution of the 1969–1970 jump of the secular variation rate has a worldwide character. The geometry of the jump presents some similarities with the geometry of the secular variation itself. We give a new estimation of the westward drift rate and information about spatial and temporal variations of the secular variation field. |
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