摘要:

ABSTRACTAmong the meteorites gathered in the vicinity of the Arizona Meteorite Crater, a few individuals have been found whose etching pattern differs markedly from that of the typical Canyon Diablo irons; and chemical analysis reveals a considerably higher content of nickel: about 8.4%. According to accepted methods of identification, these distinctive individuals are regarded as belonging to a different type of meteorite. The majority of the irons of this new type show striking deformation of the kamacite plates, a feature almost unknown in the usual Canyon Diablo irons. An explanation for this is offered. It is suggested that the new type of nickel‐iron meteorite from the region of Meteorite Crater be called Canyon Diablo, Arizona, No.

ISSN:0096-2813    

DOI:10.1111/j.1945-5100.1940.tb00316.x

出版商:Blackwell Publishing Ltd    

年代:1940

数据来源: WILEY

摘要:

AbstractIt is believed that a thoroughgoing program of research on meteorites and meteoric phenomena would yield knowledge of a practical nature. Some of the areas of life in which meteoritical research may prove of value are: weather forecasting, the lighting industry, mineral deposits, metallurgy, aëronautics, ballistics, and radio

ISSN:0096-2813    

DOI:10.1111/j.1945-5100.1940.tb00317.x

出版商:Blackwell Publishing Ltd    

年代:1940

数据来源: WILEY

ISSN:0096-2813    

DOI:10.1111/j.1945-5100.1940.tb00318.x

出版商:Blackwell Publishing Ltd    

年代:1940

数据来源: WILEY

摘要:

ABSTRACTThis article contains a brief review of previous research; chiefly, however, new data concerning the fall of the Tungus, central Siberia, meteorite on June 30, 1908. New testimony of eyewitnesses was collected by the author and others in 1928‐32. A map of the region of the fall has been plotted. The meteorological conditions on the morning of June 30, 1908, have been studied on the basis of data from meteorological stations in central Siberia. The atmospheric phenomena accompanying the flight were studied with the aid of barograms from Siberian and European stations as well as seismograms recorded at Irkutsk. On the basis of sound phenomena and data supplied by barograms and seismograms, the moment of the explosion of the meteorite was determined (as 0h***16mG.M.T.). On the basis of investigations of acoustic and light phenomena, an estimate of the number of wind‐fallen trees, the amplitude of oscillation of the atmospheric pressure at Slutsk and in England, and, finally, a comparison with other phenomena, the order of the work done by the explosion was calculated and found to be [between] ***1029and ***1021ergs. From the testimony of eyewitnesses, the brightness, color, and form of the head and the envelope of the meteorite, the character of the explosion, and the geocentric velocity were determined. Bounds for the [positions of the] trajectory and the radiant of the meteorite were found. [In §10 of this translation a simplification and an extension of Astapowitsch's discussion of the position of the trajectory and the radiant are gi

ISSN:0096-2813    

DOI:10.1111/j.1945-5100.1940.tb00319.x

出版商:Blackwell Publishing Ltd    

年代:1940

数据来源: WILEY

ISSN:0096-2813    

DOI:10.1111/j.1945-5100.1940.tb00320.x

出版商:Blackwell Publishing Ltd    

年代:1940

数据来源: WILEY

ISSN:0096-2813    

DOI:10.1111/j.1945-5100.1940.tb00321.x

出版商:Blackwell Publishing Ltd    

年代:1940

数据来源: WILEY

ISSN:0096-2813    

DOI:10.1111/j.1945-5100.1940.tb00322.x

出版商:Blackwell Publishing Ltd    

年代:1940

数据来源: WILEY