Japan Geoscience Union Meeting 2016

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Oral

Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM16] Physics and Chemistry in the Atmosphere and Ionosphere

Tue. May 24, 2016 10:45 AM - 12:15 PM 106 (1F)

Convener:*Yuichi Otsuka(Solar-Terrestrial Environment Laboratory, Nagoya University), Takuya Tsugawa(National Institute of Information and Communications Technology), Seiji Kawamura(National Institute of Information and Communications Technology), Chair:Michi Nishioka(National Institute of Information and Communications Technology)

11:30 AM - 11:45 AM

[PEM16-04] Observation of mid-latitude sporadic E over North America by GNSS-TEC

*Takato Suzuki1, Masato Furuya2, Kosuke Heki2, Jun MAEDA3 (1.Hokkaido University, 2.Faculty of Science, Hokkaido University, 3.Hokkaido University Library)

Keywords:Sporadic E, GNSS-TEC

Maeda and Heki. (2014) succeeded in capturing sporadic E (Es) over Japan two-dimensionally, using the observation of Global Navigation Satellite System - Total Electron Content (GNSS-TEC). We aimed to capture Es over the western coast of North America where there is mid-latitude same as Japan and GNSS stations are dense.
First, we chose the dates whose critucal frequencies of Es (foEs) were more than 12 MHz at Disisonde in Pt. Arguello (lat: 34.8, lon: 239.5) in the morning and noon in 2006 through 2015 from May to August. Second, we made GNSS-TEC maps.
We succeeded in capturing Es over America and indicated that a strong Es appeared also at different longitude can be captured by GNSS-TEC. Es observed this time had E-W direction slope. It is though that this reflects E-W wind shear.