DIY Northern Lights
DIY Northern Lights
复制标题
DIY北极光
DOI：
10.1093/astrogeo/att208
复制
发表时间：
2013
影响因子：
0.8
通讯作者：
Bryers C
中科院分区：
文献类型：
--
作者：
Bryers C
6.44 A&G·2013年12月·第54卷加热它们，结果加热器波能量减少。由于碰撞频率与温度有关，因此温度的变化会导致吸收的变化。这种效应取决于加热器波的频率和功率：净效应是高功率波在整个D区比低功率波经历更多的吸收。我们估计这种吸收效应使用高级等人的模型。（2010），发现对于最低和最高加热器功率，其分别在3 dB和12 dB之间变化。另一个要考虑的影响是光束到达反射高度时的发散。当加热波穿过密度随高度变化的电离层时，会发生折射。使用EISCAT雷达的电子密度测量值，可以使用模型来确定能量密度随着光束发散而降低多少。通常，这可以将能量密度降低20%。一旦考虑到这些影响，就可以在加热器功率通量和激励率之间进行定量比较。
6.44 A&G• December 2013• Vol. 54 heating them up, and there is a decrease in the heater wave energy as a result. Because the collision frequency is temperature-dependent, a change in temperature causes a change in the absorption. This effect depends on the heater wave frequency and power: the net effect is that a high-power wave undergoes more absorption than a low-power wave throughout the entire D-region. We estimate this absorption effect using the model of Senior et al.(2010) and found it to vary between 3 db and 12 dB for the lowest and highest heater powers respectively. Another effect to be considered is the divergence of the beam as it reaches the reflection altitude. As the heater wave passes through the ionosphere, which varies in density with altitude, refraction can occur. Using the electron density measurements from the EISCAT radar, a model can be used to determine by how much the energy density decreases as the beam diverges. Typically this can decrease the energy density by 20%. Once these effects are accounted for, a quantitative comparison between the heater power flux and excitation rate can be made.
DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
B. U. E. Brändström;T. Leyser;A. Steen;M. Rietveld;B. Gustavsson;T. Aso;Masaki Ejiri
通讯作者：
Masaki Ejiri