Sentences with phrase «with higher amplitudes»

Researchers have directly observed Alfvén waves in the lower corona, within about half a solar radius of the surface (SN: 4/11/09, p. 12), but not farther out where similar waves with higher amplitudes would travel.
The biggest, the one with the highest amplitude, produced the stickiest sensation, so the friction that it created as a user moved it across the screen gave the impression of heft.
Theta waves, with high amplitudes and frequencies falling between those of delta and alpha waves, normally appear in adults during light sleep and meditation.
The loss of multi-year ice during 2007 has resulted in all the minima since then being well below normal, with a high amplitude seasonal cycle.

Not exact matches

For the one minute segment recorded with eyes closed, brainwaves were analyzed to identify asymmetries in electrical amplitudes at the higher frequencies.
Establishing high - amplitude circadian rhythms could be as simple as modifying our schedules, but for some people — those with sleep disorders, for example, or those whose work requires long and irregular hours — it can be difficult, if not impossible.
Although plant activity can increase with warmer temperatures and higher carbon dioxideconcentrations, the change in carbon dioxide amplitude over the last 50 years is larger than expected from these effects.
Today, most wireless communication technologies use lower frequencies (5 GHz or below) with high - order digital modulation schemes, such as the quadrature amplitude modulation (QAM), to enhance data rates within limited bandwidths available.
In their report, Laurent and his colleagues describe the existence of REM and slow - wave sleep in the Australian dragon, with many common features with mammalian sleep: a phase characterized by low frequency / high amplitude average brain activity and rare and bursty neuronal firing (slow - wave sleep); another characterized by awake - like brain activity and rapid eye movements.
The POLARBEAR experiment examined a small (30 degree square) region of the sky to produce high resolution maps of B - mode polarization, which enabled the team to determine that the amplitude of gravitational fluctuations they measured was consistent with the leading theoretical model of the universe, known as the Lambda Cold Dark Matter cosmological model.
By comparing that figure with the waves» amplitude at the source, which the researchers can derive from the shape of the signal, and by knowing how the amplitude decreases with distance, which they get from Einstein's theory, they can then calculate the distance of the source to a much higher precision.
Within these networks in both wakeful rest and sleep states, we found that electrophysiological functional connectivity of both high - frequency broadband (HFB, or high gamma; 70 - 170 Hz) and alpha (8 - 12 Hz) power amplitudes were reproducibly correlated spatially with functional connectivity in separately recorded resting - state fMRI within the same subjects.
Now, a team of researchers has come up with a technique to «breed» Schrödinger's cats, and has in the process, figured out a way to create cats with much higher amplitude than ever before.
This article demonstrates that the results of the phantom experiment show close agreement between SNR improvement with and without diffusion - encoding gradient lobes, indicating that there is no loss of SNR due to side effects of the high amplitude gradient lobes.
Studies have shown that astaxanthin can help the eyes in many ways, including reducing eye strain, helping with increasing higher accommodation amplitude (the adjustment in the lens of the eye that allows it to focus), allowing eyes to recover more quickly from eye fatigue, and reducing eye soreness, dryness, tiredness, and blurred vision.
In a related study performed not in free - weight squats but with a leg press, Da Silva et al. (2008) explored the differences between high and low foot positions in a horizontal leg press and found that there were no significant differences in hamstrings EMG amplitude, although there were differences in respect of quadriceps EMG amplitude.
They reported that gluteus maximus EMG amplitude was relatively high in the squat - style 1 - hand kettlebell swing, squat - style kettlebell swing with kime, squat - style kettlebell snatch (76 %, 83 % and 58 % of MVIC), compared with the leg muscles.
Engaging «Sport» mode takes the stirring engine note a step further with the system allowing even higher engine note amplitude in the cabin.
This handling sure - footedness comes thanks to Kia's high - performance with amplitude selective suspension with damper control.
There are signs of greatness in how its complex underpinnings cope with low and high - amplitude bumps and ridges on standard 18 - inch wheels and 245/50 tires.
The more rigid body combines with numerous chassis upgrades — including higher performance dampers, retuned electric power steering and, on Touring models, new Amplitude Reactive Dampers and hydraulic subframe bushings — to deliver even more responsive steering and handling together with a more refined ride quality.
Engineered with Amplitude Selected Dampers (ASD), added rear strut reinforcement, and an all - new high - strength chassis to improve handling and dynamics, the Sedona is confidence behind the wheel.
The system includes a lower double joint with a split lower control arm, optimized kingpin geometry, upper control arm, hydraulic compliance bushing, special dual - stage Amplitude Reactive Dampers, and a stabilizer bar that is heat treated for high strength.
[1] CO2 absorbs IR, is the main GHG, human emissions are increasing its concentration in the atmosphere, raising temperatures globally; the second GHG, water vapor, exists in equilibrium with water / ice, would precipitate out if not for the CO2, so acts as a feedback; since the oceans cover so much of the planet, water is a large positive feedback; melting snow and ice as the atmosphere warms decreases albedo, another positive feedback, biased toward the poles, which gives larger polar warming than the global average; decreasing the temperature gradient from the equator to the poles is reducing the driving forces for the jetstream; the jetstream's meanders are increasing in amplitude and slowing, just like the lower Missippi River where its driving gradient decreases; the larger slower meanders increase the amplitude and duration of blocking highs, increasing drought and extreme temperatures — and 30,000 + Europeans and 5,000 plus Russians die, and the US corn crop, Russian wheat crop, and Aussie wildland fire protection fails — or extreme rainfall floods the US, France, Pakistan, Thailand (driving up prices for disk drives — hows that for unexpected adverse impacts from AGW?)
Abstract: «Persistent episodes of extreme weather in the Northern Hemisphere summer have been shown to be associated with the presence of high - amplitude quasi-stationary atmospheric Rossby waves within a particular wavelength range (zonal wavenumber 6 — 8).
Westerlies don't reverse, but shift from Zonal Flow with few low amplitude Rossby Waves to Meridional Flow with more and higher amplitude Waves (Figure 3).
White et al., 2018 Our data, together with published work, indicate both a long - term trend in ENSO strength due to June insolation [solar] forcing and high - amplitude decadalcentennial fluctuations; both behaviors are shown in models.
There are some missing data for the period 1818 - 1849, and the data for SC10 - 11 are under revision, but all in all this graph conveys pretty well that - in general - a low amplitude cycle is preceded by a solar cycle transition with a high number of spotless days, and vice versa.
In particular, the model captures the diurnal amplitude and phase, with heavier rainfall at high elevations along the Sierra Madre Occidental in the early afternoon that shifts to lower elevations along the west slopes in the evening.
For example, Grinsted et al. (2009) predicts GSL swings with ∼ 4 times larger amplitude (with much higher sea levels during the Medieval Warm Period).
The equations for Rossby waves (Calculation of the Meridional Wave Number, Physics of the Parameter, and Calculation of the Amplitudes) show that this can occur if a set of necessary conditions are met: u ¯ > 0 in the midlatitude region; the highest value of l within the waveguide is in the range of the meridional wave numbers lm dominantly contributing to the external forcing with a given m, which provides closeness of the k waves to respective m waves not only in terms of the zonal but also the meridional wave numbers, favoring the QRA of the m waves; the total latitudinal width of the waveguide is no less than the characteristic spatial scale of the relevant Airy function (25), which is used as the boundary condition at its southern and northern boundaries; and latitudinal distribution of l is sufficiently smooth in the waveguide, and both TPs lie within a midlatitude region of ∼ 25 ° N — 30 ° N and ∼ 65 ° N − 70 ° N, as the necessary condition for the application of quasilinear Wentzel − Kramers − Brillouin (WKB) method (25) when solving the equations for Rossby waves.
Petoukhov et al. (34) proposed a common mechanism for generating persistent high - amplitude quasibarotropic planetary - scale wave patterns of the NH midlatitude atmospheric circulation with zonal wave numbers m = 6, 7, and 8 that can explain a number of the major NH summer extremes over the 1980 — 2011 period (34, 35).
Free extratropical Rossby waves with zonal wave numbers about 6 to 8 mostly occur as high - amplitude, fast traveling waves (the so - called synoptic transients responsible for much of the weather variability in the extratropics); once established, they can freely propagate predominantly to the east with a phase speed c ≈ 6 − 12 m ⋅ s − 1 without maintenance from external forcing.
This attests that the QRA, as described here in a quasilinear approximation, is not, of course, the only mechanism for generating regimes of high - amplitude midlatitude waves with m = 6, 7, and 8.
We further show that resonance conditions for these planetary waves were, in many cases, present before the onset of high - amplitude wave events, with a lead time up to 2 wk, suggesting that quasiresonant amplification (QRA) of these waves had occurred.
The very high statistical significance of (i) the phase agreement between Solar north - ward excursions and the diversity minima and (ii) the correlation of the magnitude of diversity drops with CR amplitudes through all cycles provide solid support for our model.
A strong snowmelt in late April / early May and torrential rains in late May / early June could have been caused by the occurrence of persistent quasibarotropic high - amplitude QRA structures with zonal wave numbers m = 6 and m = 7 in the field of the NH midlatitude meridional velocity.
However, using National Centers for Environmental Prediction − National Center for Atmospheric Research (NCEP - NCAR) reanalysis data (41), Petoukhov et al. (34) showed that, during a number of recent NH extremes in July and August, certain persistent high - amplitude atmospheric wave patterns with barotropic vertical structure evolved, to which the quasistationary component of midlatitude barotropic free waves with zonal wave numbers k ≈ 6 − 8 made an exceptionally large contribution.
In addition, the evolution of change in drought amplitude clearly shows greatest variance during the LIA, with roughly half (53 %) of years for which PDSI's mean running variance stays within the highest 10th percentile (Fig 4B).
As such, recent studies looking back at the past 30 years of data show a decadal modulation of El Niño Southern Oscillation (ENSO) stability, with the past decade characterized by higher - frequency and lower - amplitude El Niños than the previous ones [22].
The ITCZ wandere with the seasons, but the poleward shift amplitude is mainly solar cycle induced: thus during high solar activity, the ITCZ and the jet stream position is more polewards, at low activity more equatorward.
Yamal.SPL, on the other hand, is just the high - frequency residuals that result when a smoothed version of Yamal.RCL (using a 30 - year smoothing spline, i.e. one with a 30 - year half - amplitude) is subtracted from Yamal.RCL.
When the amplitude of the 1000 - year solar signal is adjusted by its wavelet power (figure 81), a high correlation between North Atlantic iceberg activity and the 980 - year Eddy solar cycle corresponds to the periods when the 1000 - year solar signal is high, while the correlation is low at periods of weak 1000 - year solar signal, strengthening the relationship between climatic Bond events and solar activity, that has been acknowledged by multiple authors, starting with Gerald Bond himself (Bond et al., 2001).
With less old ice there was a qualitative regime shift to a less damped and thus HIGHER AMPLITUDE annual cycle after 2007, BUT THERE WAS NO BIFURCATION.
That regression has been looked at before, and Snyder (2016) updates that with her new (and slightly higher amplitude) temperature reconstruction.
The four High Amplitude Audio capture microphones surrounded to it's body gives a rich recording with an option of directional stereo, emphasizing the sound from objects around you.
In sum, consistent with our first hypothesis, the higher the attachment avoidance, the higher the pain rating, N2 and P2 local peak amplitude were during partner presence compared to partner absence.
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