Documentation and analysis of the WSEG-10 fallout prediction model. Master's thesis

Technical Report · Sat Mar 01 04:00:00 EST 1980

OSTI ID:7065796

Hanifen, D W

The purpose of this independent study is to recreate and document the most popular analytical fallout model in use over the past twenty years, WSEG-10. Local access to WSEG-10 at the Air Force Institute of Technology, School of Engineering, will provide a basis for future fallout studies. As such, this study provides a fully documented Fortran computer code containing the most recent version of the WSEG-10 analytical model with sample output. To further understand this computer code, a general discussion of the WSEG-10 fallout model and analysis of crossrange dispersion (sigma (y)) and activity conservation is included. Results of the analysis of sigma(y) demonstrate that diffusive growth is not accounted for in the model and that crosswind shear is the dominant, long term effect. In a comparative conservation analysis, the WSEG model in use today does not conserve activity due to the unnormalized character of the crossrange transport function. This effect is substantial at yields less than .1 MT. Activity not conserved varied between 31.4% at 1 KT and a wind of 60 st. mi. Also included is a further discussion of model limitations or inconsistencies discovered either through computer use during this independent study or during initial literature search.

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, OH (USA). School of Engineering
• OSTI ID: 7065796
• Report Number(s): AD-A-083515
• Country of Publication: United States
• Language: English

Related Subjects

500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ANALYTIC FUNCTIONS
COMPUTER CODES
COMPUTERS
CONTAMINATION
DATA
DIFFUSION
EXPERIMENTAL DATA
FALLOUT
FORECASTING
FORTRAN
FUNCTIONS
INFORMATION
NUMERICAL DATA
PROGRAMMING LANGUAGES
SYSTEMS ANALYSIS
W CODES