Model of red sprites due to intracloud fractal lightning discharges

نویسنده

  • J. A. Valdivia
چکیده

A new and improved model of red sprites is presented. Emphasis is placed on accounting for the puzzling observation of the spatial structure in the exnissions. The model relies on the electromagnetic pulse (EMP) fields created by a horizontal lightning discharge and includes the observed fractal structure of such discharges in the computation of the EMP power density. It, is shown that the model can account for the observed spatial structure of the red sprites while reducing the typical charge required to approximately

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Red sprites: Lightning as a fractal antenna

A new and improved model of red sprites is presented. Emphasis is placed in accounting for the puzzling observation of the spatial structure in the red sprite's optical emissions. The model relies upon a horizontal fractal lightning discharge, which generates the EMPs that excites the optical emissions in the lower ionosphere. It is shown that the fractal model may account for the observed spri...

متن کامل

Fractal structure of sprites

A large scale model of sprites based on a phenomenological probabilistic approach to modeling of streamer corona discharges is developed. The model utilizes the experimentally documented macroscopic properties of positive and negative streamer corona in air and allows a realistic determination of the propagation of multiple breakdown branches in a self-consistent electric field. The model resul...

متن کامل

•emissions (+spectra) •interaction of Electrons with Neutrals •electron Energization Fokker Planck Code •propagation of Em Fields including Self Absorption •source Is Lightning •horizontal Dendritic

Red Sprites: Lightning as a Fractal Antenna J. A. Valdivia 1, G. Milikh 2, and K. Papadopoulos 1;2 Dept. of Physics1, Dept. of Astronomy2, Univ. of Maryland, College Park, MD 20742 Abstract A new and improved model of the red sprites is presented. Emphasis is placed in accounting for the puzzling observation of small scale structure in the emissions. The model relies in a horizontal lightning d...

متن کامل

Sprites triggered by negative lightning discharges

High altitude air breakdown, manifested as “red sprites,” is reported in close association with negative cloudto-ground lightning (−CG) on at least two occasions above an unusual storm on August 29, 1998. Data from high speed photometry, low-light-level video, and receivers of lightning electromagnetic signatures in the frequency range 10 Hz to 20 kHz are used to establish the association and i...

متن کامل

Mesospheric Electric Field Transients due to Tropospheric Lightning Discharges

A physical picture and quantitative two-dimensional electromagnetic modeling of mesospheric electric field transients produced by cloud-to-ground (CG) lightning discharges with short duration currents (<0.5 ms) are presented. The range of applicability of existing quasi-electrostatic models of sprites and the physical conditions under which relatively weak CG lightning discharges (thundercloud ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007