| アイテムタイプ |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
| 公開日 |
2001-09-01 |
| タイトル |
|
|
タイトル |
VLF/LF sounding of the lower ionosphere to study the role of atmospheric oscillations in the lithosphere-ionosphere coupling |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| ID登録 |
|
|
ID登録 |
10.15094/00006337 |
|
ID登録タイプ |
JaLC |
| ページ属性 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
P(論文) |
| 著者名(英) |
Molchanov,O. A.
Hayakawa, M.
Miyaki, K.
|
| 著者所属(英) |
|
|
言語 |
en |
|
値 |
Earth Observation Research Center, National Space Development Agency of Japan/University of Electro-Communications/University of Electro-Communications |
| 抄録(英) |
|
|
内容記述タイプ |
Other |
|
内容記述 |
It is shown that sounding of the lower ionosphere boundary by subionospheric signals from powerful VLF/LF transmitters can be a useful tool for the investigation of Planetary Waves (PW) with periods in a range of 2-30 days. A specific spring-time transition in the PW dynamic periodograms is revealed from our analysis of several years data using Tsushima, Japan VLF transmitter (10.2kHz) along the path with length of about 1000km. Earthquake influence m the periodograms could be sometime recognized as an appearance of specific wavelets. We discuss a possibility of PW transportation from the bottom to the upper atmosphere as modulation of shorter-scale gravity waves (GW) inside the troposphere and subsequent demodulation of the GW at the atmosphere-ionosphere boundary for the explanation of observational results. The existence of modulation due to gravity waves in LF signal amplitude is presented to support the above hypothesis. |
|
言語 |
en |
| 雑誌書誌ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11397422 |
| 書誌情報 |
Advances in polar upper atmosphere research
巻 15,
p. 146-158,
発行日 2001-09
|
| 出版者 |
|
|
出版者 |
National Institute of Polar Research |
|
言語 |
en |
KJ00000048077 (1.6 MB)
.png)
