نتایج جستجو برای: in quiet geomagnetic conditions
تعداد نتایج: 17067655 فیلتر نتایج به سال:
In this paper, a relationship between M P 5.0 earthquakes and diurnal variations of the total geomagnetic field recorded at eight magnetometers in Taiwan during 1988–2001 are examined. One magnetometer station was setup in a seismic quiet area as a reference, while the others were located in areas of high seismicity or crustal activity observing earthquake effects. We compute the distribution o...
The two full precessions in local time completed by the Van Allen Probes enable global specification of the near-equatorial inner magnetosphere plasma environment. Observations by the Helium-Oxygen-Proton-Electron (HOPE) mass spectrometers provide detailed insight into the global spatial distribution of electrons, H+, He+, and O+. Near-equatorial omnidirectional fluxes and abundance ratios at e...
We investigate the possibility that sufficiently large electric fields and/or ionization during geomagnetic disturbed conditions may invalidate the assumptions applied in the retrieval of neutral horizontal winds from meteor and/ or lidar measurements. As per our knowledge, the possible errors in the wind estimation have never been reported. In the present case study, we have been using co-loca...
The purpose of this study was to determine the effect of focusing attention on quiet eye behavior and accuracy of execution on dart throwing skills. For this purpose, 20 male students in dart beginner (age range 19-22 years old) were voluntarily selected. All participants performed external and internal attention instructions in a counterbalanced manner. Thus, Participants first made 10 attempt...
rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...
The relationship between polar geomagnetic variations and the polarity of the interplanetary magnetic sectors' has been studied for the quiet year 1965. It is found that during the day hours a system of ionospheric currents encircles the magnetic poles on every day. The current system may extend up to 15 ø from the pole but is strongest at 8ø-10 ø invariant colatitude. The current direction as ...
Background: The maintenance of postural control is a key component in dynamic physical activity, especially during muscle fatigue and against external forces. Despite many studies in this field, there is no consensus regarding the effects of plantar flexor muscles fatigue on postural control during different postural tasks.Objective: To evaluate the effects of plantar flexor muscles fatigue on ...
[1] The Nowcast of Atmospheric Ionizing Radiation for Aviation Safety (NAIRAS) is a real-time, global, physics-based model used to assess radiation exposure to commercial aircrews and passengers. The model is a free-running physics-based model in the sense that there are no adjustment factors applied to nudge the model into agreement with measurements. The model predicts dosimetric quantities i...
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