Sentences with phrase «cyclic variation»

The Milankovitch cycles are a set of cyclic variations in characteristics of the Earth's orbit around the sun.

This likely due to non cyclic variation in the time series that is not accounted for in the pure cosine model.

Samples drilled from evenly spaced sites along the tooth also revealed cyclic variations in isotope ratios, including strontium, carbon, and oxygen, suggesting that this animal migrated about 200 kilometers each year, Price and his colleagues report today in the Proceedings of the Royal Society B.

There was a drop during the Ice Ages to about 180 ppm, driven by a complex of processes, with known cyclic variations in the earth's orbit at the root, with the recovery due to natural processes.

These can be usefully identified by comparison of the full window and half - window plots since these will affect all traces at the same point and will not scale as cyclic variations will.

A similar frequency analysis of HadSST3, shown in Figure 7, shows that the long term cyclic variation, greater then 100 years, has been severely attenuated.

Well - dated records of both of these indirect indicators of solar activity reach back many thousands of years and exhibit cyclic variations of about 2300, 210 and 88 years, as well as 11 years, all of which are ascribed to the Sun.

It is better to look at regional level pattern as they follow general circulation patterns in conjenction with natural in - built cyclic variations.

Premenopausal mammographic density in relation to cyclic variations in endogenous sex hormone levels, prolactin, and insulin - like growth factors

Opera singers traditionally use much more vibrato — a slow, cyclic variation or «wobble» in pitch — compared to orchestral musicians.

Pischinger and Heywood [10] found that the cyclic variation of flame propagation near the spark plug influences the amount of heat release at the spark plug gap and this greatly influences the so - called rapid burn angle.

Experimental results showed the controller successfully reducing the cyclic variations in combustion by altering the exhaust valve timing, resulting in stable combustion and an expanded operating range.

But what if we include a cyclic variation with period about 60 yr?

He later said that it was a steady increase plus a cyclic variation with period about 60 years.