Establishing a Subauroral Geophysical Observatory for Space Physics and Radio Science at Gakona, Alaska

在阿拉斯加加科纳建立空间物理和无线电科学的亚极光地球物理观测站

• 批准号: 2054361
• 负责人: Robert McCoy
• 金额: $ 931万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-04-01 至 2026-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2054361&HistoricalAwards=false
• 关键词: Establishing; Subauroral; Geophysical; Observatory; Space

This project supports the NSF space physics and aeronomy community in their effort to observe and actively probe Earth’s upper atmosphere and geospace environment, in the subauroral and auroral zones. Instruments and infrastructure for these studies are already established, and together comprise a world class year-round observatory that is located at Gakona, Alaska, at an L-value of roughly five. The centerpiece of this observatory is the High-frequency Active Auroral Research Program (HAARP), the most capable and powerful HF transmitter in the world. The location in Gakona, Alaska - at 62°23’N (63.44° magnetic N), 145°09’W, and about 2.5° south of Fairbanks - is southward of the auroral zone most of the time, but frequently is directly under the active aurora. The location is ideal for ionospheric modification studies of the generation of ELF and VLF radio emissions by modulating the auroral electrojet, and for studies of the injection of these waves into the magnetosphere to observe their interaction with energetic particles in the radiation-belts. This Subauroral Geophysical Observatory (SAGO) will be operated as a community research facility with routine operation of scientific diagnostic instrumentation and with the HAARP transmitters running in campaign mode periodically for a few days at a time. Support is requested here for a baseline of 200 hours of HAARP operation per year, with unrestricted additional time available for externally funded studies. In addition to support for observatory operations, travel support is requested for investigators to travel to Gakona to participate in experimental campaigns, each with an allocation of transmitter time.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.

该项目支持美国国家科学基金会空间物理学和高层大气物理学界在极光带和极光带观测和积极探测地球高层大气和地球空间环境的努力。这些研究的仪器和基础设施已经建立，共同组成了一个位于阿拉斯加加科纳的世界级全年观测台，L值约为5。这个天文台的核心是高频主动极光研究计划（HAARP），这是世界上最有能力和最强大的高频发射机。在阿拉斯加的加科纳，位于北纬62° 23 '，西经145° 09'，费尔班克斯以南约2.5°，大部分时间位于极光带的南部，但经常直接位于活跃的极光之下。该地点对于通过调制极光电喷流产生极低频和甚低频无线电发射的电离层修改研究，以及对将这些波注入磁层以观察它们与辐射带中高能粒子的相互作用的研究，都是理想的。该次表层地球物理观测站将作为一个社区研究设施运行，定期运行科学诊断仪器，HAARP发射机每次定期运行几天。这里要求支持每年200小时的HAARP操作基线，并为外部资助的研究提供不受限制的额外时间。除了支持观测站的运作外，还要求为研究人员提供差旅支持，以便前往加科纳参加实验活动，每次活动都分配有发射机时间。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Slow Contraction of Flash Aurora Induced by an Isolated Chorus Element Ranging From Lower‐Band to Upper‐Band Frequencies in the Source Region

源区域中从低频带到高频带频率范围内的孤立合唱元素引起的闪光极光的缓慢收缩

• DOI: 10.1029/2021gl097597
• 发表时间: 2022
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Ozaki, Mitsunori;Yagitani, Satoshi;Shiokawa, Kazuo;Tanaka, Yoshimasa;Ogawa, Yasunobu;Hosokawa, Keisuke;Kasahara, Yoshiya;Ebihara, Yusuke;Miyoshi, Yoshizumi;Imamura, Kousuke
• 通讯作者: Imamura, Kousuke

A statistical study of longitudinal extent of Pc1 pulsations using seven PWING ground stations at subauroral latitudes

使用亚极光纬度的七个 PWING 地面站对 Pc1 脉动纵向范围进行统计研究

• DOI: 10.1029/2021ja029987
• 发表时间: 2023
• 期刊: Journal of Geophysical Research
• 作者: Liu;J.;K. Shiokawa;S. Oyama;Y. Otsuka;C.-W. Jun;M. Nose;T. Nagatsuma;K. Sakaguchi;A. Kadokura;M. Ozaki;M. Connors;D. Baishev;N. Nishitani;A. Oinats.;V. Kurkin;and T. Raita
• 通讯作者: and T. Raita

On the use of ELF/VLF emissions triggered by HAARP to simulate PLHR and to study associated MLR events

• DOI: 10.1186/s40623-021-01551-9
• 发表时间: 2022-01
• 期刊: Earth, Planets and Space
• 作者: M. Parrot;F. Němec;M. Cohen;M. Gołkowski

Observations of plasma waves generated by charged space objects

带电空间物体产生的等离子体波的观测

• DOI: 10.1063/5.0155454
• 发表时间: 2023
• 期刊: Physics of Plasmas
• 影响因子: 2.2
• 作者: Bernhardt, Paul A.;Scott, Lauchie;Howarth, Andrew;Morales, George J.
• 通讯作者: Morales, George J.

Active Precipitation of Radiation Belt Electrons Using Rocket Exhaust Driven Amplification (REDA) of Man-Made Whistlers.

使用火箭排气驱动的放大（REDA）的辐射带电子的主动沉淀。

• DOI: 10.1029/2022ja030358
• 发表时间: 2022-06
• 期刊: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
• 影响因子: 2.8
• 作者: Bernhardt, P. A.;Hua, M.;Bortnik, J.;Ma, Q.;Verronen, P. T.;McCarthy, M. P.;Hampton, D. L.;Golkowski, M.;Cohen, M. B.;Richardson, D. K.;Howarth, A. D.;James, H. G.;Meredith, N. P.
• 通讯作者: Meredith, N. P.