نتایج جستجو برای: in quiet geomagnetic conditions
تعداد نتایج: 17067655 فیلتر نتایج به سال:
this dissertation has six chapter and tree appendices. chapter 1 introduces the thesis proposal including description of problem, key questions, hypothesis, backgrounds and review of literature, research objectives, methodology and theoretical concepts (key terms) taken the literature and facilitate an understanding of national security, national interest and turkish- israeli relations concepts...
most specialists in the field of foreign language teachingconsiderreading skill as an interactive process between the reader’s prior knowledge and the text.accordingly, the activation of prior knowledge for an effective comprehension is very important. it is generally agreed that the pre-reading phase is the stage where this type of interaction and activation may be enhanced throughcertain stra...
Abstract The spatial and temporal dynamics of ionospheric currents are among the most evident manifestations interaction between magnetized plasma solar origin magnetosphere‐ionosphere system. In this context, a special role is played by field‐aligned (FACs), which drive energy momentum exchanges magnetosphere ionosphere, deeply affecting balance latter. One relevant physical quantities that ma...
A significant correlation between the occurrence of pearl pulsations at College, Alaska, and interplanetary magnetic field sector boundaries has been observed. Pearl pulsation data published by the Geophysical Institute, University of Alaska, and sector data published by Wilcox and Ness have been used to show the following: pearl pulsations are more likely to occur on the day a sector boundary ...
Abstract. This work presents the daytime behavior of intermediate layer (ILs) parameters (the virtual height – h'IL, and top frequency ftIL) over low-latitude region Cachoeria Paulista (CP, 22.42? S; 45? W, I: ?34.59?) during 2009 deep solar minimum. Under such a unique condition, this research reveals ILs' quiet state seasonal as well its responses to moderate changes in geomagnetic activity. ...
We developed an algorithm especially adapted to single-station wavelet detection of geomagnetic events, which precede or accompany the earthquakes. The detection problem in this situation is complicated by a great variability of earthquakes and accompanied phenomena, which aggravates finding characteristic features of the events. Therefore we chose to search for the characteristic features of b...
in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...
In this letter, we summarize initial results showing how solar cycle variations of the thermosphere modify the composition and intensity of ion upflows at high geomagnetic latitudes. Using an improved version of the one-dimensional hydrodynamic polar wind model developed by Gombosi et al. (1985), we obtain H + and O + vertical flow profiles using different thermospheric states corresponding to ...
Under the influence of space weather, abnormal disturbances in ionosphere will distort model seriously and affect global navigation satellite system negatively. This study analyzes ionospheric activity characteristics performance low latitude during a strong geomagnetic storm from 7 to 9 September 2017. The research goals are determine behavior refine latitude. In experiment, vertical total ele...
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