Sentences with phrase «oscillation occurs»

In contrast, the positive phase of the Southern Oscillation occurs during La Niña episodes, and refers to the situation when abnormally low air pressure covers Indonesia and the western tropical Pacific and abnormally high air pressure covers the eastern tropical Pacific.

Other researchers found that such daily oscillations occurred in other animals and humans.

Such oscillations occur naturally as the irregular nucleus rotates about its spin axis and reflects different amounts of sunlight during a rotation cycle.

Specifically, they want to find out if neutrino oscillations occur over short distances (less than 65 feet).

When all Monsoon producing oscillations occur at the same time, you have floods and death, but water loving crops thrive.

Recent shifts in this oscillation occurred in 1946, 1977, and 2006.

For example, Willis is discussing the Pacific oscillations, but similar oscillations occur in the other oceans — the difference is the size and amount of local and global influence.

Peaks of the oscillation occurred in 1942 and 2008.

For example, about 800,000 years ago a shift of the dominant periodicity from a 41,000 yr to 100,000 yr signal in glacial oscillations occurred (called the Mid-Pleistocene Transition, see e.g., Clark et al., 2006), and while a lot of ideas exist for why this should be the case, there's no bulletproof answer to this.

In general, oscillations occur most readily for large values of κ v, when the mean state of the ocean is characterized by a strong meridional overturning circulation.

However, the parameter range over which oscillations occur is smaller than when the ocean is coupled to full atmosphere.

Not exact matches

This trade wind strengthening, which occurs during a the negative phase of a phenomenon called the Interdecadal Pacific Oscillation (also known as the Pacific Decadal Oscillation), pushes warm water westward and and changes Pacific Ocean circulation.

The collective oscillation, called a plasmon, occurs at a frequency that depends on the material's density, explains Matthew Mecklenburg, a physicist at the University of Southern California in Los Angeles who was not involved in the work.

There is another significant meteorological phenomenon above the planet's equator and which could affect the winds: the Semi-annual Oscillation (SAO), which occurs about 50 km above the cloud deck and which causes the temperatures to oscillate and the winds to change direction and strength from East to West.

Kersten and Smirnov, however, show that this decoherence effect does not have any impact on the experimental measurement of the oscillation probability for each neutrino flavour; they only demonstrate this result in cases that are similar to, albeit simpler, than what happens in a supernova, where collective effects occur.

Research done by Dr. Christopher Pack, from McGill University, who looked at such waves occurring in a region of the visual cortex of the brain, suggests these oscillations could have a role in resetting the sensitivity of neurons after eye movements.

The combined effects of El Niño (ENSO) and the North Atlantic Oscillation (NAO), both of which are naturally occurring climate processes, drove the recent hot spot, according to the study.

New research has shown that similar Kelvin - Helmholtz waves also frequently occur in Earth's magnetosphere and allow particles from the solar wind to enter the magnetosphere to produce oscillations that affect Earth's protective radiation belts.

But in 1998, scientists discovered that neutrinos frequently change from one flavor into another — a process called neutrino oscillation that can only occur if neutrinos do, in fact, have mass.

Researchers found that some of these oscillations are linked with blood pressure, but are generally slower, occurring at lower frequencies, which have been shown in previous studies to be related to oscillations in vascular motion and blood oxygenation.

We've all heard about circadian rhythm, the roughly 24 - hour oscillations of biological processes that occur in many living organisms.

Slow oscillations in brain activity, which occur during so - called slow - wave sleep, are critical for retaining memories.

«Importantly, the sound stimulation is effective only when the sounds occur in synchrony with the ongoing slow oscillation rhythm during deep sleep.

Such oscillations can occur similarly to the way in which the rotating beam of a lighthouse increases in intensity as it passes by an observer.

The El Niño - Southern Oscillation, or ENSO, is a naturally occurring climate cycle in which sea - surface temperatures in the equatorial Pacific Ocean fluctuate.

Those who woke during REM sleep and successfully recalled their dreams were more likely to demonstrate a pattern of EEG oscillations called theta waves in frontal and prefrontal cortex areas — the parts of the brain where our most advanced thinking occurs.

The researchers compared this long fire record with weather patterns: the well - known El Nino and La Nina cycles that occur every two to seven years, as well as longer cycles called the Pacific Decadal Oscillation and the Atlantic Multidecadal Oscillation (AMO).

The peak of the pulse envelope may occur at the same time as a crest of the carrier, but it may also be shifted to any other stage of the oscillation.

Those oscillations also prove that neutrinos have mass, as they can occur only if the neutrinos have different masses.

These mutual collective oscillations of protons and neutrons occur with quite a high frequency, therefore with quite a high energy.

Until now, most sleep research has focused on global control of sleep, which occurs when the entire brain is awash in slow waves — oscillations of brain activity created when sets of neurons are silenced for brief periods.

Slow oscillations also occur during coma and general anesthesia, and are associated with decreased arousal.

Elucidation of the molecular basis of mood changes occurring with an infradian (longer than a day) rhythm has been hampered by the lack of an animal model that exhibits spontaneous behavioral changes related to the infradian oscillation of mood.

The slow - oscillation upstates are theorized to provide a window of opportunity for memory consolidation, and memory reactivation underlying consolidation may occur preferentially during these times.

High frequency oscillations in the λ 13C composition of long chain fatty acids during MIS 3 appear to coincide with Dansgaard / Oeschger variability in high latitude ice cores, with positive (negative) excursions occurring during stadial (interstadial) periods.

Stellar - mass black holes also often feature paired X-ray oscillations that occur in a 3:2 frequency ratio.

Similar fluctuations in OMZ intensity have occurred during the Dansgaard - Oeschger (D - O) events (millennial - scale abrupt climate oscillations) during the last glacial period (Cannariato and Kennett, 1999; Schmittner et al., 2007).

Naturally occurring interannual and multidecadal shifts in regional ocean regimes such as the Pacific El Niño - Southern Oscillation, the North Atlantic Oscillation, and the Atlantic Multidecadal Oscillation, for example, are bimodal oscillations that cycle between phases of warmer and cooler sea surface temperatures.

Large interannual variability in snowpack can be nested within Pacific Decadal Oscillation (and Pacific North American) driven patterns (e.g., see the high snow years of 1996 and 1997 that occurred during a 25 - year period of below average snowpack).

In order to see if oscillation has occurred during the neutrinos» 500 - mile journey, the detector at Minnesota measures the relative fraction of mu and electron neutrinos.

«Similarly, if oscillations did not occur, scientists expected to see only one electron neutrino appearance (due to background interactions).

Under certain conditions, theta - like oscillations can be induced in hippocampal or entorhinal cells in the absence of septal input, but this does not occur in intact, undrugged adult rats.

Based on evidence from electrophysiological studies showing that both synaptic plasticity and strength of inputs to hippocampal region CA1 vary systematically with ongoing theta oscillations (Hyman et al., 2003; Brankack et al., 1993), it has been suggested that the theta rhythm functions to separate periods of encoding of current sensory stimuli and retrieval of episodic memory cued by current stimuli so as to avoid interference that would occur if encoding and retrieval were simultaneous.

oscillation A recurring cyclical pattern in global or regional climate that often occurs on decadal to sub-decadal timescales.

High frequency combustion instabilities are periodic oscillations of combustion that occur due to the coupled interaction between unsteady heat release from combustion, acoustic fluctuations within the combustor, and perturbations of the incoming propellant.

Throughout the record, they found that a combination of two naturally - occurring climate patterns — the El Niño Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO)-- were associated with «hot spots» of sea level rise along the Eastern seaboard, including the southeastern hot spot from 2011 to 2015.

But in this most recent event, the merging occurred relatively quickly and no additional oscillations were observed, meaning the two black holes were likely not spin - aligned and probably didn't form together.

``, glycemic variability (also known as «GV») refers to blood glucose oscillations that occur throughout the day, including hypoglycemic periods and postprandial (after a meal) increases, as well as blood glucose fluctuations that occur at the same time on different days.

This oscillation between light and shadow also occurs in Nicolas Robbio's work in which a projection of a window blind occupies a section of the wall, an imaginary threshold that is both an image and a physical presence in the room.

A new important concept, the «center of oscillation,» now occurs to take into account the moment of inertia for the entire plumb bob and arm structure (and assumed frictionless pivot point.)