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...

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...

materials. Such changes are referred to as paleomagnetic secular variation or paleosecular variation (PSV). The records typically include long periods of...

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...

growth Secular variation, the long-term non-periodic variation of a time series Mexican secularization act of 1833 Organized secularism Secular clergy...

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...

weaker variations are the Earth's magnetic map. Within these weaker areas the local directions and intensities change gradually (secular variation). A compass...

Secular humanism is a philosophy, belief system, or life stance that embraces human reason, logic, secular ethics, and philosophical naturalism, while...

both secularly and periodically. The quantities given are the values at the instant J2000.0 of the secular variation, ignoring all periodic variations. aphelion...

theory VSOP (French: Variations Séculaires des Orbites Planétaires) is a mathematical model describing long-term changes (secular variation) in the orbits of...

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):...

Larmor in 1919, has been modified due to extensive studies of magnetic secular variation, paleomagnetism (including polarity reversals), seismology, and the...

Earth's outer core, the actual magnetic poles are constantly moving (secular variation). However, over thousands of years, their direction averages to the...

both secularly and periodically. The quantities given are the values at the instant J2000.0 of the secular variation, ignoring all periodic variations. aphelion...

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...

summation Periodic travelling wave Quasiperiodic function Seasonality Secular variation Wavelength List of periodic functions "IEC 60050 — Details for IEV...

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...

oppose it. Secular nationalists are people that support political secularism within their own state. Scholars identify several variations of political...

waves such as magnetic Rossby waves may be one source of geomagnetic secular variation. Electromagnetic methods that are used for geophysical survey include...

coefficients, the model also has an equal number of spherical-harmonic secular variation coefficients predicting the temporal evolution of the field over the...

2008. Retrieved September 11, 2008. Martin, R.E. (1995). "Cyclic and secular variation in microfossil biomineralization: clues to the biogeochemical evolution...

In geophysics, a geomagnetic jerk or secular geomagnetic variation impulse is a relatively sudden change in the second derivative of the Earth's magnetic...

Hardie , Lawrence A (1996). "Secular variation in seawater chemistry: An explanation for the coupled secular variation in the mineralogies of marine...

Hardie, Lawrence A (1996), "Secular variation in seawater chemistry: An explanation for the coupled secular variation in the mineralogies of marine...

assess how well the obtained paleomagnetic dataset samples geomagnetic secular variation. Progressive demagnetization techniques are used to identify secondary...

doi:10.1093/icb/43.1.157. PMID 21680420. Martin RE (1995). "Cyclic and secular variation in microfossil biomineralization: Clues to the biogeochemical evolution...

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...

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...

Seasonal subseries plot Seasonal variation Seasonally adjusted annual rate Second moment method Secretary problem Secular variation Seed-based d mapping Seemingly...

Magnetic Pole Geodynamo Magnetic anomaly Magnetosphere Secular variation Geomagnetic secular variation Geomagnetic jerk Apparent polar wander Geomagnetic...