Frontier Research at the Jicamarca Radio Observatory

吉卡马卡射电天文台的前沿研究

基本信息

批准号：
2213849
负责人：
David Hysell
金额：
$ 865.32万
依托单位：
Cornell University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2023
资助国家：
美国
起止时间：
2023-02-01 至 2028-01-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2213849&HistoricalAwards=false
关键词：
Frontier Research Jicamarca Radio Observatory

项目摘要

The ionized portion of the upper atmosphere at the magnetic equator (equatorial ionosphere) is a unique plasma environment which hosts diverse plasma phenomena ranging from equatorial plasma bubbles to small-scale plasma structures. Plasma bubbles and other plasma density structures are known to disturb radio and satellite communications and thus represent a space weather hazard. The Jicamarca Radio Observatory (JRO) near Lima, Perú has been providing high-quality observations of these phenomena and the associated plasma processes for 60 years. JRO is owned and operated by the Peruvian Geophysical Institute (Instituto Geofísico del Perú) with support from an award from the Geospace Facilities program at NSF to Cornell University. JRO is the equatorial anchor of the Geospace Facilities chain and the only such facility that enables experimental investigations of space plasma physics and space weather disturbances near the magnetic equator. Over the years, JRO has undergone continual improvement and upgrades and its centerpiece, the Jicamarca incoherent scatter radar (ISR), is currently the largest ISR in terms of the power-aperture product, a measure of how sensitive the radar is to various plasma disturbances. The work will exploit the JRO’s unique capabilities associated with its location near the magnetic equation and its high sensitivity by focusing on new classes of plasma phenomena and processes unique to the equatorial zone. These include upper-hybrid plasma instability in the daytime 150-km region, lower-hybrid waves in the high topside at night, solar echo experiments, multi-frequency plasma irregularity studies, the effects of Coulomb collisions on the incoherent radar spectrum, and meteor echoes and derived neutral winds. This work will expand relationships with outside researchers and programs through collaborative investigations and by hosting visits from students and professionals; maintain an efficient, diverse management system that is resilient to changes occurring at NSF, Cornell, and in Peru; expand STEM educational opportunities by directly supporting undergraduate and graduate students; and train the next generation of radio scientists through a combination of summer schools, workshops, and hosted visits as well as the creation of curricula and educational materials.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

磁性方程（赤道电离层）处的高层大气的离子部分是一个独特的等离子体环境，它具有从备量等离子等离子体气泡到小尺度等离子体结构的潜水等离子体现象。已知血浆气泡和其他血浆密度结构会干扰无线电和卫星通信，因此代表了空间天气危险。秘鲁附近利马附近的JICAMARCA无线电天文台（JRO）一直对这些现象和相关的血浆过程提供高质量的观察。 JRO由秘鲁地球物理学院（InstitutoGeofísodelPerú学院）拥有和运营，并获得了NSF Geospace设施计划的奖项，致NSF授予康奈尔大学。 JRO是Geospace设施链的等边锚，也是唯一能够实现磁性等等效器附近的太空等离子体物理和太空天气障碍的实验性投资的设施。多年来，JRO经历了持续的改进和升级，其核心JICAMARCA INCROHENT STACTER RADAR（ISR）目前是功率驱动产品的最大ISR，这是对雷达对各种等离子体灾难的敏感程度。这项工作将利用JRO的独特功能与其位置在磁性等效度附近的位置以及其高灵敏度相关，并通过关注新的等离子体现象和等效区域独有的过程。其中包括白天150公里区域的高杂种血浆不稳定性，晚上高顶部的下杂交波，太阳能回声实验，多频等离子体不规则性研究，库仑碰撞对不雷达雷达光谱的影响以及无线echo echo echo and echo echo and deled中性风。这项工作将通过协作投资和主持学生和专业人士的访问来扩大与外部研究人员和计划的关系；保持有效的潜水管理系统，该系统取决于NSF，Cornell和秘鲁发生的变化；通过直接支持本科生和研究生来扩大STEM教育机会；并通过暑期学校，讲习班和主持访问以及创建课程和教育资料的结合来培训下一代无线电科学家。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响标准来评估NSF的法定任务。