|
Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://www.naic.edu/aisr/worldday/wd_intro.html
Дата изменения: Wed Mar 5 18:38:50 2003 Дата индексирования: Tue Oct 2 05:08:28 2012 Кодировка: IBM-866 Поисковые слова: п п п п п п р п р п р п р п р п |
Arecibo World Day data
description
The Arecibo incoherent scatter radar measures a number of plasma parameters, including: drift (V), concentration [Ne], electron temperature (Te) and ion temperature (Ti). A number of programs have been developed at Arecibo to optimize the observations at different regions and for different parameters. The following summarizes three most commonly used programs at Arecibo during a World Day experiment.
ۤ
The
F-region program
covers the altitude range of 140 - 660 km. Line-of-sight velocity, Ti, Te, [Ne], [He+]/[Ne], and [H+]/[Ne] typically have a time resolution of 2 minutes
and a height resolution of 37 km. The KINDAT code in the CEDAR database for these
parameters is 2010. The vector ion drift velocity KINDAT code is 2011.
ۤ
E-region
program
typically covers the altitude range of 90-160 km. Ti, Te and ion drift have a
height resolution of 1.2 km and a time resolution comparable to that in the
F-region. E-region program is usually run only during some specific campaigns,
such as the Mesosphere and Lower Thermosphere Coupling Studies. The KINDAT code
in the CEDAR database is 2021 for this kind of data.
ۤ
The
barker-code program allows the measurement of electron concentration at a
height resolution of 0.6 km with a very high S/N. This program typically covers
the altitude range of 60 - 500 km. The KINDAT code in the CEDAR database is
2015.
Processed data are
archived at the CEDAR Database Center, Boulder, CO. in a common binary format.
A compact binary format and an ASCII version are also available from Arecibo.
Interested users are welcome to obtain the data either from the CEDAR Database or from the
Arecibo Observatory by contacting Mike Sulzer.
If you have used the
Arecibo data in your publication, please do not forget to acknowledge the
Arecibo Observatory. The acknowledgement can be:
тАЬThe Arecibo Observatory
is the principal facility of the National Astronomy and Ionosphere Center,
which is operated by the Cornell University under a cooperative agreement with
the National Science Foundation.тАЭ