摘要:

The cosmic‐ray event of February 23, 1956, represents the superposition of a flare increase and a broad Forbush‐type intensity decrease. A model is proposed to account for the cosmic‐ray intensity observations during this

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00147

年代:1957

数据来源: WILEY

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00155

年代:1957

数据来源: WILEY

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00159-01

年代:1957

数据来源: WILEY

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00160

年代:1957

数据来源: WILEY

摘要:

This communication describes a type of sudden commencement of magnetic storms not previously discussed in the literature. This type of sudden commencement occurs at higher latitudes, and its characteristics have been studied in magnetograms made at Point Barrow (71.3°N, 156.8°W; gm 68°N), College (64.9°N, 147.8°W; gm 65°N), Cheltenham (38.7°N, 76.8°W; gm 50°N), Tucson (32.3°N, 110.8°N; gm 40°N), San Juan (18.4°N, 66.1°W; gm 30°N), and Honolulu (21.3°N, 158.1°W; gm 21°N), during the period from July 1949 to March 1956.During that period, 44 sudden commencements were observed. Twenty‐one of them, observed at higher latitudes, were characterized by a small negative impulse preceding the main positive impulse in the horizontal component, and thus were designated as−Sc(usually deno

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00162

年代:1957

数据来源: WILEY

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00166

年代:1957

数据来源: WILEY

摘要:

In a private communication, Mr. W. Galbraith, of the Department of Zoology, Oxford University, has brought to my attention an error in my paper, “A method for drawing the great‐circle path between any two points on earth,” published in tie September 1956 issue (Vol. 61, No. 3, pp. 445–448) of this JOURNAL.The basic principle (3) was incorrectly quoted from Turner's paper. It is true only for points along the great circle through the center of one grid and parallel to the side common to the adjoining grid. The construction described is correct only for this si

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00167

年代:1957

数据来源: WILEY

摘要:

Attention was called by Mr. F. S. Johnson1to the fact that Figure 2 of the article, ‘Physical properties of the atmosphere from 90 to 300 kilometers,’ published in the September 1956 issue (Vol. 61, No. 3, p. 520) of this JOURNAL, did not agree with the density values given in Table 1. Upon checking the illustrative figure, it was found that by mistake of the authors the wrong figure had been included. The correct Figure 2, consistent with Tables 1 and 2 and with the text, is given be

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00168

年代:1957

数据来源: WILEY

摘要:

In a Letter to Editor* under the above title, the increase of cosmic‐ray intensity during the solar flare of February 23, 1956, was shown graphically for Cheltenham and Godhavn. The increase observed at Huancayo and at Ciudad Universitaria, Mexico, D.F., was briefly described on the basis of preliminary reports. The purpose of this note is to correct errors on the graph for Godhavn, which arose from typographical mistakes in the cabled results, and to provide details of the increase at Huancayo, Mexico, and Christchurch. Figure 1 herewith shows the results for five station

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00169

年代:1957

数据来源: WILEY

摘要:

At 1042 PM on 1 November 1956, 2 kilograms of sodium metal were ejected in vapor form into the earth's atmosphere from 60 to 140 km along the trajectory of an Aerobee rocket. An easily visible yellow glow and persistent trail were observed. Measurements of the altitude and the intensity of the emission were obtained from photometric measurements and simultaneous two‐site photograph with Super‐Schmidt cameras which recorded the emission over the entire 80‐km region. At 60 km, the glow was visible and a dim persistent trail was photogr

ISSN:0148-0227    

DOI:10.1029/JZ062i001p00170

年代:1957

数据来源: WILEY