Analysis and Modelling of the DIRT I and Graf II Battlefield Dust Obscuration Data.

Abstract

An analysis of photographic information is used to determine the source characteristics and the salient aspects of atmospheric diffusion for explosion-produced dust clouds. Specifically, the dependence of source strength (dust yield) upon the nature of the terrain and surface vegetative cover (sod) is identified. A partitioning of ejecta into essentially two distinct clouds, only one of which is buoyantly rising, is noted. Analytic solutions describing the diffusion of these two clouds taking into account the effects of vertical wind shear and gravitational settling are presented. Finally, experimental evidence indicative of large obscuration amplitude modulations is discussed and its association with effects due to large atmospheric eddies is suggested.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1980
Accession Number
ADA081989

Entities

People

  • David S. Dvore
  • John F. Ebersole
  • Manuel Martinez-sanchez
  • Roberto Vaglio-laurin

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Atmospheric Motion
  • Atmospheric Sciences
  • Boundary Layer
  • Data Analysis
  • Diffusion
  • Diffusivity
  • Explosions
  • Explosives
  • Frequency
  • Hot Gases
  • Line Of Sight
  • Moisture Content
  • Night Vision
  • Particle Size
  • Particles
  • Turbulence
  • Wind Shear

Fields of Study

  • Environmental science

Readers

  • Aerosol Science/Aerosol Physics
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Theoretical Analysis.