Collaborative Research: CEDAR--Application of the RENOIR System in Brazil to Study the Gravity Wave Trigger Mechanism In the Production of Equatorial Spread F and Scintillations

合作研究：CEDAR——应用巴西RENOIR系统研究赤道扩散F和闪烁产生中的重力波触发机制

• 批准号: 0940217
• 负责人: John Meriwether
• 金额: $ 15.38万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-15 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0940217&HistoricalAwards=false
• 关键词: Collaborative; Research; CEDAR; Application; RENOIR

This project is a 3-year collaborative effort between University of Illinois and Clemson University. The objective is to utilize observations from a suite of instruments newly deployed in northeastern Brazil to study the effects caused by thermosphere-ionosphere (TI) coupling and equatorial plasma instabilities, particularly those effects that are initiated by thermospheric gravity wave (GW) activity. The Remote Equatorial Nighttime Observatory for Ionospheric Regions (RENOIR) consists of two Fabry-Perot interferometers (FPI), a single wide-field imaging system, a dual-frequency GPS receiver, and two arrays of single-frequency GPS scintillation monitors. The two FPI instruments will be used in a bi-static configuration to measure thermospheric wind and temperature fluctuations within a common volume region. This will provide evidence for gravity wave activity that is one of the suggested trigger mechanisms for the production of equatorial spread-F (ESF) and plasma bubbles. ESF activity will be documented through two-dimensional maps of 630.0-nm and 777.4-nm nightglow intensities using the wide-field airglow imaging system. In addition, as part of these routine observations, GPS measurements of the total electron content (TEC) and scintillation properties associated with ionospheric irregularities will be made. RENOIR in Brazil represents an international collaboration between Clemson University, the University of Illinois, the Instituto Nacional de Pesquisas Espaciais (INPE), and the Federal University at Campina Grande. Students from institutions in both the United States and Brazil will be involved in all aspects of this project, enhancing their education while training the next generation of scientists and engineers. The results of this project will advance the understanding of equatorial ionospheric irregularities, which has direct societal benefits through the adverse effects these irregularities can have on trans-ionospheric radio wave propagation

该项目是伊利诺伊大学和克莱姆森大学之间的3年合作努力。 目的是利用新近部署在巴西东北部的一组工具的观察结果来研究由热层 - 离子层（TI）耦合和赤道等离子体不稳定性引起的影响，尤其是那些由热层重力波（GW）活性引发的效果。电离层区域的远程赤道夜间天文台（Renoir）由两个Fabry-Perot干涉仪（FPI）组成，一个单场宽大成像系统，一个双频GPS接收器和两个单频率的GPS GPS闪烁式单位阵列。两种FPI仪器将用于双静态配置中，以测量公共体积区域内的热层风和温度波动。这将为重力波活性提供证据，这是赤道扩散-F（ESF）和血浆气泡产生的建议的触发机制之一。 ESF活动将通过使用宽场气格成像系统的630.0 nm和777.4 nm的Nighglow强度进行记录。 此外，作为这些常规观察的一部分，将制定与电离层不规则相关的总电子含量（TEC）和闪烁特性的GPS测量。 巴西的雷诺阿代表了克莱姆森大学，伊利诺伊大学，伊利诺伊州大学的埃斯提斯·埃斯皮西亚（INPE）和坎皮纳·格兰德大学的联邦大学之间的国际合作。 来自美国和巴西机构的学生将参与该项目的各个方面，在培训下一代科学家和工程师的同时，增强了他们的教育。 该项目的结果将提高对赤道电离层的不规则性的理解，该赤道层的不规则性通过这些不规则的不利影响具有直接的社会益处