Accession Number : AD0653579

Title :   AIR PRESSURE DEPENDENCE OF COSMIC RAY INTENSITY. METHODS AND RESULTS OF A STATISTICAL ANALYSIS ON NEUTRON MONITOR DATA,

Corporate Author : UPPSALA UNIV (SWEDEN) COSMIC RAY GROUP

Personal Author(s) : Martinelle,Sten

Report Date : NOV 1966

Pagination or Media Count : 30

Abstract : A general regression model is derived which describes the dependence of the cosmic-ray neutronic component on the air pressure. As the residuals are correlated the ordinary least-squares method is not the best one to estimate the pressure effect. Alternative methods are discussed. Five methods are used to estimate the pressure coefficient at Upsala during the years 1957-1964. It turns out that a modified two-station method gives the best result and also that there exists a solar cycle dependence of the pressure coeff.

Descriptors :   (*RADIATION MONITORS, *NEUTRON COUNTERS), (*COSMIC RAYS, INTENSITY), SWEDEN, STATISTICAL ANALYSIS, MODEL THEORY, TIME SIGNALS, CHARGED PARTICLES, INTERACTIONS, BAROMETRIC PRESSURE

Subject Categories : Nuclear Instrumentation
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE