Sporadic <i>E</i> layer observations over Arecibo using coherent and incoherent scatter radar: Assessing dynamic stability in the lower thermosphere

DOI Web Site Web Site 被引用文献6件
  • D. L. Hysell
    Earth and Atmospheric Sciences Cornell University Ithaca New York USA
  • E. Nossa
    Earth and Atmospheric Sciences Cornell University Ithaca New York USA
  • M. F. Larsen
    Physics and Astronomy Clemson University Clemson South Carolina USA
  • J. Munro
    Computer Information Systems University of the Virgin Islands St. Croix U.S. Virgin Islands
  • M. P. Sulzer
    Arecibo Observatory Arecibo Puerto Rico
  • S. A. González
    Arecibo Observatory Arecibo Puerto Rico

書誌事項

公開日
2009-12
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2009ja014403
公開者
American Geophysical Union (AGU)

この論文をさがす

説明

<jats:p>A patchy sporadic <jats:italic>E</jats:italic> ionization layer was observed using the 430 MHz incoherent scatter radar at the Arecibo Radio Observatory and a new, 30 MHz coherent scatter radar imager located on St. Croix. The former measured state parameters of the layer (plasma density, temperature, and composition) while the latter observed small‐scale plasma waves and the associated quasiperiodic (QP) echoes. Regularization was used to estimate horizontal vector ion drifts from Arecibo line‐of‐sight data. Assuming the ion temperatures and drifts to be representative of the neutral atmospheric temperatures and drifts in the mesosphere lower‐thermosphere (MLT) region, we evaluated the Richardson number criterion for neutral dynamic instability in regions occupied by the layers. We find that the condition for instability was generally satisfied and thus that dynamic instability is consistent with the layer breakup. The electrodynamics of the resulting patchy layers could then give rise to the QP echoes.</jats:p>

収録刊行物

被引用文献 (6)*注記

もっと見る

問題の指摘

ページトップへ