• The secular variation of a time series is its long-term, non-periodic variation (see Decomposition of time series). Whether a variation is perceived as...
    10 KB (1,118 words) - 18:45, 25 October 2024
  • Geomagnetic secular variation refers to changes in the Earth's magnetic field on time scales of about a year or more. These changes mostly reflect changes...
    7 KB (790 words) - 15:57, 26 May 2024
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    materials. Such changes are referred to as paleomagnetic secular variation or paleosecular variation (PSV). The records typically include long periods of...
    78 KB (8,958 words) - 21:07, 14 November 2024
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    rate of change is known as the geomagnetic secular variation, and current models using a constant variation over five-year periods are on average (root...
    23 KB (2,926 words) - 23:34, 25 September 2024
  • growth Secular variation, the long-term non-periodic variation of a time series Mexican secularization act of 1833 Organized secularism Secular clergy...
    1 KB (170 words) - 00:23, 25 April 2020
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    Compass (redirect from Variation compass)
    poles slowly change with time, which is referred to as geomagnetic secular variation. The effect of this means a map with the latest declination information...
    44 KB (5,954 words) - 02:35, 21 October 2024
  • weaker variations are the Earth's magnetic map. Within these weaker areas the local directions and intensities change gradually (secular variation). A compass...
    6 KB (733 words) - 19:29, 16 October 2022
  • Thumbnail for Secular humanism
    Secular humanism is a philosophy, belief system, or life stance that embraces human reason, logic, secular ethics, and philosophical naturalism, while...
    67 KB (8,049 words) - 21:41, 9 November 2024
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    both secularly and periodically. The quantities given are the values at the instant J2000.0 of the secular variation, ignoring all periodic variations. aphelion...
    218 KB (19,311 words) - 18:44, 20 November 2024
  • theory VSOP (French: Variations Séculaires des Orbites Planétaires) is a mathematical model describing long-term changes (secular variation) in the orbits of...
    15 KB (2,020 words) - 16:45, 20 September 2024
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    Solar cycle (redirect from Solar variation)
    1051/0004-6361/202141516. Solanki SK, Schuessler M, Fligge M (1 February 2002). "Secular variation of the Sun's magnetic flux". Astronomy and Astrophysics. 383 (2):...
    89 KB (10,014 words) - 10:42, 21 September 2024
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    Larmor in 1919, has been modified due to extensive studies of magnetic secular variation, paleomagnetism (including polarity reversals), seismology, and the...
    34 KB (4,393 words) - 01:56, 1 October 2024
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    Earth's outer core, the actual magnetic poles are constantly moving (secular variation). However, over thousands of years, their direction averages to the...
    10 KB (1,188 words) - 19:06, 16 November 2024
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    both secularly and periodically. The quantities given are the values at the instant J2000.0 of the secular variation, ignoring all periodic variations. aphelion...
    17 KB (1,874 words) - 21:16, 6 November 2024
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    Publishing Inc. p. 157. ISBN 978-0815302155. Adams, J C (1853). "On the Secular Variation of the Moon's Mean Motion". Phil. Trans. R. Soc. Lond. 143: 397–406...
    36 KB (4,748 words) - 23:43, 23 October 2024
  • Secularism (redirect from Secular society)
    oppose it. Secular nationalists are people that support political secularism within their own state. Scholars identify several variations of political...
    36 KB (4,189 words) - 18:56, 20 November 2024
  • Thumbnail for Cipriano de Rore
    Rore also composed secular Latin motets, a relatively unusual "crossover" form in the mid-16th century. These motets, a secular variation of a normally sacred...
    14 KB (1,986 words) - 21:25, 30 July 2024
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    summation Periodic travelling wave Quasiperiodic function Seasonality Secular variation Wavelength List of periodic functions "IEC 60050 — Details for IEV...
    12 KB (1,704 words) - 08:14, 18 August 2024
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    waves such as magnetic Rossby waves may be one source of geomagnetic secular variation. Electromagnetic methods that are used for geophysical survey include...
    50 KB (5,284 words) - 08:29, 19 July 2024
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    coefficients, the model also has an equal number of spherical-harmonic secular variation coefficients predicting the temporal evolution of the field over the...
    5 KB (555 words) - 22:41, 6 April 2024
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    2008. Retrieved September 11, 2008. Martin, R.E. (1995). "Cyclic and secular variation in microfossil biomineralization: clues to the biogeochemical evolution...
    102 KB (10,183 words) - 12:35, 2 November 2024
  • In geophysics, a geomagnetic jerk or secular geomagnetic variation impulse is a relatively sudden change in the second derivative of the Earth's magnetic...
    6 KB (674 words) - 23:37, 16 January 2024
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    Hardie, Lawrence A (1996), "Secular variation in seawater chemistry: An explanation for the coupled secular variation in the mineralogies of marine...
    11 KB (1,190 words) - 13:06, 8 November 2024
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    Hardie , Lawrence A (1996). "Secular variation in seawater chemistry: An explanation for the coupled secular variation in the mineralogies of marine...
    9 KB (1,049 words) - 19:59, 13 May 2024
  • Seasonal subseries plot Seasonal variation Seasonally adjusted annual rate Second moment method Secretary problem Secular variation Seed-based d mapping Seemingly...
    87 KB (8,285 words) - 04:29, 7 October 2024
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    doi:10.1093/icb/43.1.157. PMID 21680420. Martin RE (1995). "Cyclic and secular variation in microfossil biomineralization: Clues to the biogeochemical evolution...
    147 KB (15,031 words) - 05:14, 17 November 2024
  • large-scale structure of the Earth's main magnetic field and its secular variation. It was created by fitting parameters of a mathematical model of the...
    6 KB (793 words) - 13:19, 28 December 2023
  • assess how well the obtained paleomagnetic dataset samples geomagnetic secular variation. Progressive demagnetization techniques are used to identify secondary...
    34 KB (4,049 words) - 20:00, 11 October 2024
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    Magnetic Pole Geodynamo Magnetic anomaly Magnetosphere Secular variation Geomagnetic secular variation Geomagnetic jerk Apparent polar wander Geomagnetic...
    12 KB (1,048 words) - 22:35, 1 September 2024
  • at time t, which reflects the long-term progression of the series (secular variation). A trend exists when there is a persistent increasing or decreasing...
    7 KB (839 words) - 13:54, 1 November 2023