A CENTER FOR THE DESCRIPTION OF ENVIRONMENTAL CONDITIONS - WEATHER PHENOMENA.
Abstract
The OSU THEMIS Weather Phenomena Project has sampled severe storm sferics at several geographic locations with varied success. The 1969 severe storms were less prevalent than usual in both Oklahoma and New Mexico. The Black Hills, South Dakota area provided an excellent, coordinated series of hailstorms and seeding tests for sferic data gathering. Statistical 'Pattern Recognition' techniques of data reduction have yielded first hints of correlations between sferics and storm patterns with 10 KHz and 50 KHz frequencies being remarkably different from each other. Hail occurrence has been identified as associated with rapid increase in sferic count at frequencies between 50 KHz and 200 KHz although this was not true for all storms. Theoretical studies indicate the aircraft receivers are more discriminating in horizontal polarization than in the vertical by at least one order of magnitude. Details of this study and other topics are contained in this report. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1969
- Accession Number
- AD0707446
Entities
People
- Arthur M. Breipohl
- Emmett J. Pybus
- Paul A. Mccollum
- William L Hughes
Organizations
- Oklahoma State University–Stillwater