Auroral Kilometric Radiation, Substorms, and Related Phenomena: Satellite Conjunction and Conjugate Studies at South Pole

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项目编号	1911335
	Auroral Kilometric Radiation, Substorms, and Related Phenomena: Satellite Conjunction and Conjugate Studies at South Pole
	James LaBelle (Principal Investigator)
主持机构	Dartmouth College
项目开始年	2019
	2019-07-15
项目结束日期	2022-06-30
资助机构	US-NSF
项目类别	Standard Grant
项目经费	124999(USD)
国家	美国
语种	英语
英文摘要	The near-Earth environment (Geospace) is mostly organized by the Earth's magnetic field, which interacts with the solar wind (charged particles, plasma, flowing with a great speed from the Sun) and interplanetary magnetic field (extended Sun's magnetic field). Geospace is populated by plasma that mostly originates from the solar wind. Interaction of these two major players - geomagnetic field and solar wind plasma produces many electromagnetic phenomena such as beautiful ionospheric aurorae (Northern and Southern lights), natural electromagnetic radiation, field-aligned and ionospheric currents, that prominently appear and are observed in the polar areas where they are most intense. Studying these phenomena is a matter of high importance since they affect both satellite instrumentation and their communication with the ground centers. The number of satellites flying Geospace continues to grow every year. This award will study and establish the relationship between Auroral Kilometric Radiation (AKR) observed by distant satellites and ground-level AKR-like signals, as well as will test current theories on how these phenomena are connected. The methodology is to operate radio receivers at South Pole during anticipated conjunctions with the Cluster satellite high-resolution wave instrument and enabling simultaneous measurements of AKR fine structure at both locations. Further observations of coincident AKR on the Japanese Geotail and Canadian ePOP satellites and at South Pole will complement these measurements. All this research can only be done from Antarctica - because AKR-like signals cannot be regularly observed in the Northern hemisphere due to man-made radio frequency interference, as well as because conjugate satellite/ground-based observations at auroral latitudes require Antarctic measurements. 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.
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/213606
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	James LaBelle .Auroral Kilometric Radiation, Substorms, and Related Phenomena: Satellite Conjunction and Conjugate Studies at South Pole.2019.