Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/LeetagT1941tp.pdf Дата изменения: Sat Jul 10 16:30:21 2004 Дата индексирования: Sat Dec 22 20:29:49 2007 Кодировка: Поисковые слова: рер р р р р р р р р р р р р р

Proposal Identification No.:

T1941

Date Received:

2004-Feb-08 20:46:51

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Terrestrial Aeronomy Radar Ionosphere 80 hours Hours

Effects of Injected Whistler Waves on the Ionosphere over Arecibo

We have theoretically demonstrated that the radio signals, emitted from the Naval (NAU) transmitter in Puerto Rico, can effectively interact with the ionospheric plasmas over Arecib o. These intense NAU radio waves, after entering the ionosphere, can interact with ionospheric plasmas and excite lower hybrid waves and tens of meter-scale field-aligned plasma density irregularities over Arecib o. The subsequent heating of electrons and ions by the lower hybrid waves is exp ected to yield a chain of ionospheric plasma effects, such as airglow, short-scale density depletion, and plasma line enhancement in a range of altitudes. We prop ose to carry out summer exp eriments by a team of graduate students and undergraduate students, led by Co-Principal Investigators, to test the theories. In addition to Arecib o 430 MHz radar and ionosonde, we will deploy MIT's All-Sky Imaging System, Ionospheric Radar Integrated System, and VLF/LF receiving systems for the exp eriments.

Name Min-Chang Lee

Institution Massachusetts Institute of Technology

E-mail MCLEE@MIT.EDU

Phone 617-253-5956

Student no

Service Observing Request

Remot e Observing Request

X

None All of the observing run. Part of the observing run. Queue Observing X

No Maybe Yes

Instrument Setup
430 G 430 CH receiver 430 CH radar

Atmospheric Observation Instruments: Ionosonde Description of Observer Equipment: We will take and deploy MIT's All-Sky Imaging System, 1


Ionospheric Radar Integrated System (if a frequency license can be acquired in time), and VLF/LF receiving systems for the experiments. Sp ecial Equipment or setup: None

RFI Considerations Frequency Ranges Planned
None

2