Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/BhatttagT2518tp.pdf Дата изменения: Mon Sep 21 19:01:38 2009 Дата индексирования: Tue Nov 24 11:28:05 2009 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п п п п п

Technical Page
Prop osal Typ e: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Urgent Terrestrial Aeronomy Radar Thermosphere 120 Hours 6 hours

Prop osal Title: Plasma and gyro line measurements to understand the nature of the ever present intermediate layers at Arecibo ABSTRACT:
Wide bandwidth ionospheric experiments with Arecibo are used to make high spectral resolution gyro and plasma line observations that help detect extremely weak spectral features. The sensitivity of the gyro line to the low electron densities can be utilized to detect night time intermediate layers near 150 km. Previous observations at Arecibo have indicated 6-10 minute period oscillations in these layers after the lo cal sunrise that seemed to be also present at F-region altitudes along with other unexplained features. We propose to combine high range resolution and the long pulse techniques in conjunction with the optical imagers lo cated at and east of Arecibo in South America, and GPS TEC data to detect the intermediate layers and investigate the effect of the solar terminator on the above mentioned oscillations in the layers and at higher altitudes. We propose to make these observations in November 2009 to be compared with previous similar experiments.

Name Asti N Bhatt

Institution MIT Haystack Observatory

E-mail abhatt@haystack.mit.edu

Phone 781-981-5628

Student no

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to op erator)

Instrument Setup
430 G 430 CH receiver 430 CH radar

Atmospheric Observation Instruments: Ionosonde 1


Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned

2