solar cycle

(redirected from Sunspot cycles)
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solar cycle

See sunspot cycle.

solar cycle

[′sō·lər ′sī·kəl]
(astronomy)
The periodic change in the number of sunspots; the cycle is taken as the interval between successive minima and is about 11.1 years.
References in periodicals archive ?
This work is also related to a literature on sunspot cycles arising from financial frictions.
ThinkAdvisor recently interviewed the so-called "Contrarian's Contrarian," who talked about, among other issues, the tax cut, why he expects investors to be fuming at their FAs and why the sunspot cycle (you read that correctly) is a valid predictor of market crashes.
Sunspots are the dark, cool regions of enhanced magnetic field strength found on the Sun that vary in number, size, and magnetic complexity over the course of the sunspot cycle (SC) (Wilson 2015).
In her extensive research, Lynne McTaggart discovered that many behavioural issues intensified during the 11-year sunspot cycles. Incidents of violent crime, admissions to psychiatric hospitals and even traffic accidents increased, indicating acute changes in the nervous and psychic character of humanity.
Though the effect of this difference on climate appears to be modest, scientists point to a puzzling time in Earth's history when several unusually low sunspot cycles occurred in succession.
Eventually scientists determined that sunspot cycles and aurora cycles were coordinated, both peaking every 11 years.
Comparison of the number of outbreaks of forest Lepidoptera to sunspot cycles shows that a majority of outbreaks occur during the trough of sunspot activity [ILLUSTRATION FOR FIGURE 1 OMITTED].
Ozone concentrations naturally vary in accordance with sunspot cycles, time of year, and latitude.
Based on the Geostationary Operational Environmental Satellite (GOES) soft X-ray observations (0.1-0.8 nm), the variations in the solar X-ray background flux and number of solar soft X-ray flares are examined relative to the corrected total sunspot area (SSA) and the newly revised sunspot number (SSN), using yearly means and counts for the interval 1975-2015, an interval spanning sunspot cycles (SCs) 21-23 and the first 8 years of the current SC24.
The sun has sunspot cycles that last about 11 years, which begins with minimum activity, ramps up to maximum activity in about 5.5 years, and then slides back to minimum activity again.
And sunspot cycles? Where are the "missing" neutrinos?
For all sunspot cycles (SCs) SC12-SC24, the minimum yearly ratio (= SSA/SSN) has always occurred within [+ or -]1 year of SSN minimum, while the maximum yearly ratio often has occurred post-SSN maximum during the declining portion of the SC.