Quantification of high latitude electric field variability
نویسندگان
چکیده
منابع مشابه
Quantification of High Latitude Electric Field Variability
Variability in the high latitude electric field has been identified as a major contributor to global Joule heating. Electric field patterns from the Assimilative Mapping of Ionospheric Electrodynamics (AMIE) procedure are used to characterize the E-field temporal variability over the course of 18 hours. The standard deviation of the E-field magnitude on May 4, 1998 often exceeds the average val...
متن کاملStatistical maps of small-scale electric field variability in the high-latitude ionosphere
[1] Statistical maps of small-scale electric field variability in the high-latitude ionosphere are derived for the Northern and Southern Hemispheres using 48 months of data from the Super Dual Auroral Radar Network (SuperDARN). Maps of variability magnitude (from scales of 45–450 km and 2–20 min) are derived for a range of interplanetary magnetic field (IMF) orientations and dipole tilt angles ...
متن کاملStatistical characteristics of small-scale spatial and temporal electric field variability in the high-latitude ionosphere
[1] The statistical characteristics of small-scale spatial and temporal electric field variability in the high-latitude regions of Earth’s ionosphere are investigated using 48 months of data from the Super Dual Auroral Radar Network (SuperDARN) radars in both hemispheres. Electric field fluctuations on spatial scales between 45 km and 450 km and on temporal scales between 2 min and 20 min are c...
متن کاملHIGH LATITUDE GAMMA RAYS ASSOCIATED WITH VIRGO
A more detailed analysis is made of the energy spectrum of the diffuse component of extragalactic gamma rays over the range of 0.3- 10 GeV, obtained fromthe EGRET instrument at the Compton Gamma Ray Observatory. The derived excess energy spectrum of high galactic latitude, b > 60°, using intercept method shows that it is correlated with Virgo cluster (over lsr) and average Virgo intensity i...
متن کاملHigh Latitude Climate Variability: a Role for CLIVAR
Seasonal Prediction of Arctic Sea Ice Coverage ...................................................1 New US CLIVAR Chair ...........................4 Vision for Climate Variability Research in Southern Ocean-Ice-Atmosphere Systm 5 Calendar ....................................................8 IN THIS ISSUE The decline in summer sea ice in the Arctic is much in the news and has piqued the interes...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2001
ISSN: 0094-8276
DOI: 10.1029/2000gl012624