电离层

The data of the ionospheric critical frequencies, f0F2 and f0E, observed by a Digisonde Portable Sounder (DPS-4) at Zhongshan station of Antarctica in 1996, the hemispheric power index and the midnight equatorward boundary of the aurora estimated by the observation of American NOAA and DMSP satellites are used to examine features of the polar ionosphere.

本文利用1996年的电离层数字测高仪DPS-4所测的f0F2、f0E以及美国NOAA和DMSP卫星观测估算的半球功率指数和午夜极光区赤道侧边界纬度等资料，考察中山站电离层的极区特征。

With the model,flux tubes of plasma were followed in response to convection electric fields.The trajectories,which had been adopted to follow convecting plasma flux tubes was different from each other.

假设一维时变电离层模型描述的磁流管中F层等离子体在对流作用下经过极隙区，随对流路径的不同，磁流管在极隙区经历的时间不同，以此考察极光粒子沉降作用下电离层随时间的演化过程。

Based on the forenamed theory, Estimated the Total Electron Content including the second-order ionospheric error. Established the 2°×2° geomagnetic vector grid-model over mostly area of China , then processed some dual-frequency data to indicate the algorithm is feasible and correct. Obtained some useful conclusion after analyzing the result of data processing.

本文计算了基于中心电离层单层模型的覆盖中国区域的2°×2°地磁场格网点的矢量值，对计算结果的X、Y、Z三个方向分量进行二次曲面拟合，对两种考虑地磁场影响计算包含电离层延迟误差二阶项的TEC估计结果进行了计算，验证了拟合模型的正确性和可行性，并对试算结果进行了分析，得到了一些有益的结论。

It was studied with the aid of a one-dimensional time-dependent ionospheric model self-consistently in the continuity,momentum and energy equations.

利用一维自洽的时变极区电离层模型，研究极隙区极光粒子沉降对极区电离层F层电子密度影响的时变过程。

It is the development of investigation in the field of the ionosphere,geomagnetic field and auroral phenomena in polar region, that extends the scope of geophysical research to extra terrestrial Space and thus introduces a new important subject, the solar wind magnetosphere ionosphere thermosphere coupling for further study.

对极区地磁、电离层和极光现象的深入考察将地球物理的研究领域扩展到了外层空间，并提出了太阳风－磁层－电离层－热层间耦合这一重要课题。

Since the storm heating intensities at the lower thermosphere resulting from energetic particles precipitated from the magnetosphere are different from area to area, the features of the ionospheric storm are also discrepant in different longitudinal chain regions.

特强磁暴引发的电离层暴是全球性的，但自磁层沉降的高能粒子对热层低部的加热程度及区域分布不同，因而各经度链区域内电离层暴的特征也有所差异。

Due to the complicated nature of the coupling processes between polar ionosphere and magnetosphere as well as thermosphere, however, here still remain lots of questions need to be further studied, such as the relationship between convection electric field and polar ionosphere, the mechanism of auroral particle precipitation, the origin of magnetospheric particles and so on.

如，极区电离层背景变化的气候学特征，对流电场与极区电离层的相互作用关系，以及极光区粒子沉降的机制和磁层粒子起源等等。

The ionosphere is strongly coupled with the other regions in the solar-terrestrial system, including the sun, the interplanetary medium, the magnetosphere, the thermosphere, and the mesosphere.

电离层是日—地系统的重要组成，不仅保护了地球上的生物免受太阳紫外辐射和宇宙高能粒子的直接作用，而且对穿电离层传播的无线电波产生反射、散射、吸收和折射等效应。

As main part of this thesis, the responses of the ionosphere on solar flare radiation are analyzed by means of GPS method, which is the first time in the world to analyze this kind of ionospheric disturbance using GPS method.

本论文在分析GPS系统以及空间环境对其影响的基础上，归纳出了一个简单有效而高精度的利用双频GPS数据进行电离层扰动研究的数据处理方法；分析了该方法的各种误差源及其修正；并利用该方法研究了发生于电离层中的多种背景和扰动形态。

Based on analyses of observations from the short-spaced GPS receiver array at Wuhan, the storm-time ionospheric irregularities which resulted in scintillations and rapid TEC fluctuations showed westward drifts between 21∶30 and 03∶00 LT with drift velocities changing from ~40 to ~130 m/s. And based on analyses of observations from the ultra-short spaced GPS receiver chain at Guilin, ionospheric irregularities which resulted in the L-band radio wave scintillations, showed eastward drifts around local midnight ranging from ~70 to ~55 m/s on the quiet-day and westward drifts ranging from ~150 to ~50 m/s before the midnight and eastward drifts after the midnight ranging from ~25 to ~65 m/s on the disturbed day.

短间距台网和超短间距台链观测实例的计算结果表明，暴时武汉地区引起TEC快速起伏的电离层不规则结构沿纬圈向西漂移，21∶30至03∶00 LT，西向漂移速度在约40 m/s至130 m/s的范围内变化；在桂林地区，磁静日午夜前后引起L波段电波闪烁的电离层不规则结构沿纬圈向东漂移，漂移速度从约70 m/s下降到约55 m/s，磁扰日午夜前不规则结构向西漂移，速度从约150 m/s下降到约50 m/s，午夜后转为向东漂移，速度从约25 m/s上升到约65 m/s。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新