On the relations between proton influx and D-region electron densities during the polar-cap absorption event of 28-29 October 2003
On the relations between proton influx and D-region electron densities during the polar-cap absorption event of 28-29 October 2003
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2003年10月28日至29日极帽吸收事件期间质子流入量与D区电子密度之间的关系
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
M. J. Birch
中科院分区：
文献类型：
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作者：
J. Hargreaves;M. J. Birch
抽象的。非相干散射雷达观测已被应用于探索在极冠射电吸收事件期间入射质子通量和由此产生的D区电子密度之间的关系。利用GOES地球同步卫星的质子通量数据，通过试验和误差过程估计在选定高度具有最大影响的能带，并确定经验关系。测定了白天和夜晚有效复合系数的高度廓线，并在60-70公里高度范围内研究了黄昏的转换。结果表明，昼夜变化仅限于80 km以下的高度，低层的夜间值与负离子和电子之间的平衡一致，负离子和电子之间的平衡是由三体附着和碰撞脱离控制的。白天的结果证实，相反的一些化学模型的预测，平方律连续性方程可以严格应用。据证实，正如以前报道的那样，日落变化的时间随高度而变化。
Abstract. Observations by incoherent-scatter radar have been applied to explore relationships between the fluxes of incident protons and the resulting D-region electron densities during a polar-cap radio-absorption event. Using proton flux data from a GOES geosynchronous satellite, the energy band having the greatest influence at a selected height is estimated by a process of trial and error, and empirical relationships are defined. The height profiles of the effective recombination coefficient are determined for day and night, and the transition over the evening twilight is investigated for the height range 60-70 km. The results show that the day-night change is confined to heights below 80 km, night-time values at the lower levels being consistent with a balance between negative ions and electrons controlled by 3-body attachment and collisional detachment. The daytime results confirm that, contrary to the prediction of some chemical models, a square-law continuity equation may be strictly applied. It is confirmed that, as previously reported, the timing of the sunset change varies with altitude.