CEDAR: Studies of the Dynamics of Equatorial F-region Irregularities Using Scintillation and Global Positioning System (GPS) Receivers and a Numerical Model

CEDAR：使用闪烁和全球定位系统 (GPS) 接收器和数值模型研究赤道 F 区域不规则动态

• 批准号: 0123560
• 负责人: Cesar Valladares
• 金额: $ 20.68万
• 依托单位: Boston College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-12-15 至 2006-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0123560&HistoricalAwards=false
• 关键词: CEDAR; Studies; Dynamics; Equatorial; region

The investigators will analyze data from an equatorial scintillation station at Ancon, Peru, and conduct modeling studies associated with the electrodynamics of the low latitude ionosphere under quiet and disturbed magnetic conditions. The effort includes experimental campaigns in South America in the first and third years. Other instruments to be operated during the campaigns are Fabry-Perot interferometers, GPS receivers, digisondes, and the low power mode of the Jicamarca Radar (JULIA). The primary goal of the study is to understand what conditions determine the onset of equatorial scintillations. Merging different data sets will allow the investigators to determine the background conditions of the ionosphere during the onset of scintillation and expand our view of the unstable plasma region. Specific areas of research include identifying the spatial coherence of the zonal irregularity drifts, the relation between scintillations and F-region irregularities, and the effect of geomagnetic disturbances on irregularity growth. The results of the study will contribute to the development of models for specifying and predicting scintillation conditions that might cause disruptions in transionospheric communication and navigation signals.

调查人员将分析来自秘鲁安孔的赤道闪烁站的数据，并进行与平静和扰动磁场条件下低纬度电离层电动力学有关的建模研究。 这项努力包括第一年和第三年在南美洲的实验性运动。 在这些活动中将使用的其他仪器有法布里-珀罗干涉仪、全球定位系统接收器、数字探空仪和Jicamarca雷达的低功率模式。 这项研究的主要目标是了解什么条件决定赤道反气旋的发生。 合并不同的数据集将使研究人员能够确定闪烁开始期间电离层的背景条件，并扩大我们对不稳定等离子体区域的看法。 具体的研究领域包括确定的纬向不规则漂移的空间一致性，磁振和F-区域的不规则性之间的关系，以及地磁扰动对不规则性增长的影响。 这项研究的结果将有助于建立模型，以确定和预测可能造成跨电离层通信和导航信号中断的闪烁情况。