World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Some Evidence of Ground Power Enhancements at Frequencies of Global Magnetospheric Modes at Low Latitude : Volume 15, Issue 1 (30/11/-0001)

By Francia, P.

Click here to view

Book Id: WPLBN0003976220
Format Type: PDF Article :
File Size: Pages 7
Reproduction Date: 2015

Title: Some Evidence of Ground Power Enhancements at Frequencies of Global Magnetospheric Modes at Low Latitude : Volume 15, Issue 1 (30/11/-0001)  
Author: Francia, P.
Volume: Vol. 15, Issue 1
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

Villante, U., & Francia, P. (-0001). Some Evidence of Ground Power Enhancements at Frequencies of Global Magnetospheric Modes at Low Latitude : Volume 15, Issue 1 (30/11/-0001). Retrieved from http://www.ebooklibrary.org/


Description
Description: Dipartimento di Fisica, Universita' dell'Aquila, I-L'Aquila, Italy. A statistical analysis of the power spectra of the geomagnetic field components H and D for periods ranging between 3 min and 1 h was conducted at a low-latitude observatory (L'Aquila, L=1.6) at the minimum and maximum of the solar cycle. For both components, during daytime intervals, we found evidence of power enhancements at frequencies predicted for global modes of the Earth\'s magnetosphere and occasionally observed at auroral latitudes in the F-region drift velocities (approximately at 1.3, 1.9, 2.6, and 3.4 mHz). Nighttime observations reveal a relative low frequency H enhancement associated with the bay occurrence together with a peak in the H/D power ratio which sharply emerges at 1.2 mHz in the premidnight sector. The strong similarity between solar minimum and maximum suggests that these modes can be considered permanent magnetospheric features. A separate analysis on a two-month interval shows that the observed spectral characteristics are amplified by conditions of high-velocity solar wind.

Summary
Some evidence of ground power enhancements at frequencies of global magnetospheric modes at low latitude

 

Click To View

Additional Books


  • Brightness Variations of the Northern 63... (by )
  • Geomagnetic Storm and Equatorial Spread-... (by )
  • Energetics and Structure of the Lower E ... (by )
  • Gps Phase Scintillation and Proxy Index ... (by )
  • Astrid-2 and Ground-based Observations o... (by )
  • Range Finding of Alfvén Oscillations and... (by )
  • Surface Buoyancy Flux in Bay of Bengal a... (by )
  • The Electron Drift Instrument on Cluster... (by )
  • In Situ Measurements of Sub-meter Plasma... (by )
  • On the Secondary Charging Effects and St... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook 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.