scholarly journals The Effects of Atmospheric Pressure Fluctuations on Human Behaviour Related to Injury Occurrences: Study on the Background of Low and Moderate Levels of Geomagnetic Activity

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Lyudmyla Didyk ◽  
Yuriy Gorgo ◽  
Alina Prigancova ◽  
Igor Tunyi ◽  
Magdalena Vaczyova ◽  
...  
Keyword(s):  
Geomagnetic Activity ◽  
Atmospheric Pressure ◽  
Pressure Fluctuations ◽  
Internal Gravity Waves ◽  
Human Behaviour ◽  
Combined Effects ◽  
Negative Effects ◽  
Sport Injuries ◽  
Emergency Transport ◽  
Atmospheric Pressure Fluctuations

The effects of slight atmospheric pressure fluctuations (APFs) within two ranges of periods attributed mostly to far infrasound (3 s–120 s) and internal gravity waves (120 s–1200 s) on human behaviour related to injury occurrences, within the one-year interval, are examined. Special interest is paid to the analysis of combined effects of APFs and geomagnetic activity (GMA) attributed to low and moderate levels. The relations between the daily number of emergency transport events due to sport injuries (EEI) and daily mean of APF integral amplitudes within the two ranges (DHAI and DHAG, resp.) along with the planetary geomagnetic index Ap are analysed using the regression models based on categorization. As shown, the high DHAI is a rather strong meteorotropic factor, being of relevance to increase in the incidence of sport injuries. The high DHAG appears to be of opposite sense on the background of low DHAI, promoting the decreased EEI number. The consideration of combined effects of the APF and GMA reveals that the negative effects of high DHAI are more pronounced in combination with low Ap levels. The results are discussed from the viewpoint of the necessity of further medico-meteorological studies using databases of most disturbed geophysical conditions.

scholarly journals The effects of slight atmospheric pressure fluctuations on the occurrence of emergency transport due to suicidal injuries

Health ◽  
2010 ◽  
Vol 02 (05) ◽  
pp. 448-453
Author(s):  
Lyudmyla Aleksandrovna Didyk ◽  
Yuriy Pavlovich Gorgo ◽  
Joris Jan Josef Dirckx ◽  
Irina Aleksandrovna Semenova ◽  
Nataliya Petrovna Didyk ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Pressure Fluctuations ◽  
Emergency Transport ◽  
Atmospheric Pressure Fluctuations

The Stochastic Parametric Mechanism for Growth of Wind-Driven Surface Water Waves

2008 ◽  
Vol 38 (4) ◽  
pp. 862-879 ◽  
Author(s):  
Brian F. Farrell ◽  
Petros J. Ioannou
Keyword(s):  
Surface Water ◽  
Growth Rates ◽  
Atmospheric Pressure ◽  
Water Waves ◽  
Wave Amplitude ◽  
Pressure Fluctuations ◽  
Theoretical Understanding ◽  
Wave Growth ◽  
Atmospheric Pressure Fluctuations ◽  
Surface Water Waves

Abstract Theoretical understanding of the growth of wind-driven surface water waves has been based on two distinct mechanisms: growth due to random atmospheric pressure fluctuations unrelated to wave amplitude and growth due to wave coherent atmospheric pressure fluctuations proportional to wave amplitude. Wave-independent random pressure forcing produces wave growth linear in time, while coherent forcing proportional to wave amplitude produces exponential growth. While observed wave development can be parameterized to fit these functional forms and despite broad agreement on the underlying physical process of momentum transfer from the atmospheric boundary layer shear flow to the water waves by atmospheric pressure fluctuations, quantitative agreement between theory and field observations of wave growth has proved elusive. Notably, wave growth rates are observed to exceed laminar instability predictions under gusty conditions. In this work, a mechanism is described that produces the observed enhancement of growth rates in gusty conditions while reducing to laminar instability growth rates as gustiness vanishes. This stochastic parametric instability mechanism is an example of the universal process of destabilization of nearly all time-dependent flows.

scholarly journals Observations of solar global oscillations (1983–1985) and potential influence of terrestrial sources of errors

1988 ◽  
Vol 123 ◽  
pp. 33-36
Author(s):  
A.B. Severny ◽  
V.A. Kotov ◽  
T.T. Tsap
Keyword(s):  
Atmospheric Pressure ◽  
Pressure Fluctuations ◽  
The Sun ◽  
Potential Influence ◽  
The Earth ◽  
Atmospheric Pressure Fluctuations

The Earth atmospheric pressure fluctuations in the 5-min range of periods are analysed and their influence on observations of solar 5-min oscillations are briefly discussed. New series of observations confirmed the oscillations of the Sun with period of 160.010 min.

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