Accession Number:

AD0747911

Title:

Global Deposition of Extraterrestrial Particles During October,

Descriptive Note:

Corporate Author:

NATIONAL CENTER FOR ATMOSPHERIC RESEARCH BOULDER COLO

Personal Author(s):

Report Date:

1971-07-08

Pagination or Media Count:

18.0

Abstract:

A concentration peak of magnetic spherules similar to the peak recorded at five latitudes in the northern hemisphere between 3 and 8 October 1967 was observed in 1969. The 1969 peak persisted from 1 to 14 October in the northern hemisphere and between 2 and 12 October in the southern hemisphere. The shapes of concentration curves in each hemisphere are nearly identical. The chemical analysis of collected magnetic particles reveals that some of the spherules, spheroids, and irregular particles possess similar composition. Particles present in an exceptionally high peak on 10 October in the southern hemisphere contained Mn, Cr, and Ni, a fact which supports the existence of an extraterrestrial source for those magnetic particles present during October.

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE