World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Application of Stochastic Inversion in Auroral Tomography : Volume 14, Issue 11 (30/11/-0001)

By Nygrén, T.

Click here to view

Book Id: WPLBN0003979572
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: Application of Stochastic Inversion in Auroral Tomography : Volume 14, Issue 11 (30/11/-0001)  
Author: Nygrén, T.
Volume: Vol. 14, Issue 11
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
-0001
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Markkanen, M., Lehtinen, M., Kaila, K., & Nygrén, T. (-0001). Application of Stochastic Inversion in Auroral Tomography : Volume 14, Issue 11 (30/11/-0001). Retrieved from http://worldpubliclibrary.org/


Description
Description: Department of Physical Sciences, University of Oulu, FIN-90570 Oulu, Finland. A software package originally developed for satellite radio tomography is briefly introduced and its use in two-dimensional auroral tomography is described. The method is based on stochastic inversion, i.e. finding the most probable values of the unknown volume emission rates once the optical measurements are made using either a scanning photometer or an auroral camera. A set of simulation results is shown for a different number and separations of optical instruments at ground level. It is observed that arcs with a thickness of a few kilometers and separated by a few tens of kilometers are easily reconstructed. The maximum values of the inversion results, however, are often weaker than in the model. The most obvious reason for this is the grid size, which cannot be much smaller than the arc thickness. The grid necessarily generates a spatial averaging effect broadening the arc cross-sections and reducing the peak values. Finally, results from TV-camera observations at Tromsø and Esrange are shown. Although these sites are separated by more than 200 km, arcs close to Tromsø have been successfully reconstructed.

Summary
Application of stochastic inversion in auroral tomography

 

Click To View

Additional Books


  • Probing Discrete Auroral Arcs by Ionosph... (by )
  • A Study of the Joule and Lorentz Inputs ... (by )
  • Charge Analysis on Lightning Discharges ... (by )
  • Mean Vertical Wind in the Mesosphere-low... (by )
  • Driving of the Sao by Gravity Waves as O... (by )
  • Estimation of the Effect of Long-range T... (by )
  • First Results from Ideal 2-d Mhd Reconst... (by )
  • Southern High-latitude Digisonde Observa... (by )
  • Evidence for the Role of the Diabatic He... (by )
  • Letter to the Editor: a Strange Cloud in... (by )
  • Evidence for Particle Acceleration in th... (by )
  • On the Retreat of Near-earth Neutral Lin... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.