Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Jean Louis Le Mouël"'
Autor:
Frédéric Perrier, François Bourges, Frédéric Girault, Jean-Louis Le Mouël, Dominique Genty, Bruno Lartiges, Rémi Losno, Stéphane Bonnet
Publikováno v:
Geosystems and Geoenvironment, Vol 2, Iss 2, Pp 100145- (2023)
According to thermodynamics, atmospheric pressure variations (APV) cause temperature variations in air. However, such variations are difficult to observe, except in thermally stable environments such as underground cavities. We have studied the prope
Externí odkaz:
https://doaj.org/article/824c0baa6f8842c28d19a0c63040763b
Autor:
Frédéric Perrier, François Bourges, Frédéric Girault, Jean-Louis Le Mouël, Dominique Genty, Bruno Lartiges, Rémi Losno, Stéphane Bonnet
Publikováno v:
Geosystems and Geoenvironment, Vol 2, Iss 2, Pp 100146- (2023)
In underground cavities, temperature variations of the order of 10−3 °C are permanently induced by the variations of atmospheric pressure, even at great depths, with couplings of the order of 0.2 to 20 × 10−3 °C/hPa depending on frequency. In
Externí odkaz:
https://doaj.org/article/80580add273840a2a1807c2e4e28e269
Autor:
Jean-Louis Le Mouël, Fernando Lopes, Vincent Courtillot, Dominique Gibert, Jean-Baptiste Boulé
Publikováno v:
Geosciences, Vol 13, Iss 7, p 202 (2023)
In the report he submitted to the Académie des Sciences, Poisson imagined a set of concentric spheres at the origin of Earth’s magnetic field. It may come as a surprise to many that Poisson as well as Gauss both considered the magnetic field to be
Externí odkaz:
https://doaj.org/article/a9f275267ec741f0a80dd902c4ee726c
Publikováno v:
Geosciences, Vol 13, Iss 1, p 21 (2023)
In this paper, the 1978–2022 series of northern (NHSI) and southern (SHSI) hemisphere sea ice extent are submitted to singular spectral analysis (SSA). The trends are quasi-linear, decreasing for NHSI (by 58,300 km2/yr) and increasing for SHSI (by
Externí odkaz:
https://doaj.org/article/d5a986a5a496498cbfa25bf5b7cf23eb
Publikováno v:
Geosciences, Vol 12, Iss 12, p 448 (2022)
The Earth’s revolution is modified by changes in inclination of its rotation axis. Its trajectory is not closed and the equinoxes drift. Changes in polar motion and revolution are coupled through the Liouville–Euler equations. Milanković (1920)
Externí odkaz:
https://doaj.org/article/87dd87bf97694fc3a9a666bb01ed612d
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 12, p 1871 (2022)
Variations in sea-level, based on tide gauge data (GSLTG) and on combining tide gauges and satellite data (GSLl), are subjected to singular spectrum analysis (SSA) to determine their trends and periodic or quasi-periodic components. GLSTG increases b
Externí odkaz:
https://doaj.org/article/2511fd12de99405da073a9f69f9e867b
Publikováno v:
Atmosphere, Vol 13, Iss 11, p 1907 (2022)
This paper proposes a joint analysis of variations of global sea-level pressure (SLP) and of Earth’s rotation (RP), expressed as the coordinates of the rotation pole (m1, m2) and length of day (lod). We retain iterative singular spectrum analysis (
Externí odkaz:
https://doaj.org/article/f964342a736c42e089976e923a675281
Publikováno v:
Geosciences, Vol 12, Iss 11, p 398 (2022)
Differences in formulation of the equations of celestial mechanics may result in differences in interpretation. This paper focuses on the Liouville-Euler system of differential equations as first discussed by Laplace. In the “modern” textbook pre
Externí odkaz:
https://doaj.org/article/b1d3ed2f5cde47c2a0c8d27ced44a4f2
Publikováno v:
Atmosphere, Vol 13, Iss 9, p 1354 (2022)
The evolution of mean sea-level atmospheric pressure since 1850 is analyzed using iterative singular spectrum analysis. Maps of the main components (the trends) reveal striking symmetries of order 3 and 4. The Northern Hemisphere (NH) displays a set
Externí odkaz:
https://doaj.org/article/f281a90a1acf490d96da99168ed841cf
Autor:
Boulé, Jean-Louis Le Mouël, Fernando Lopes, Vincent Courtillot, Dominique Gibert, Jean-Baptiste
Publikováno v:
Geosciences; Volume 13; Issue 7; Pages: 202
In the report he submitted to the Académie des Sciences, Poisson imagined a set of concentric spheres at the origin of Earth’s magnetic field. It may come as a surprise to many that Poisson as well as Gauss both considered the magnetic field to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::34577dc133aee111ff985ee56eb41813