摘要:

ABSTRACTAn attempt is made in this paper quantitatively to remove the systematic human factors from the annual counts of observed meteoritic falls from 1790 to 1939, inclusive. The probability that the fluctuations remaining in the counts are due solely to errors of sampling is then determined. These remaining fluctuations are shown to be normally distributed, to a close approximation, except for the years 1868 and 1933.

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00001.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

摘要:

ABSTRACTBy means of Poisson probabilities, the number of coincidental meteoritic falls in the United States is shown to be unreasonably large when the probabilities are based upon the density of total falls. Either some of the coincidental falls are not distinct falls or such factors as increased searching in the vicinity of known falls may account for the excess.

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00002.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00003.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

摘要:

ABSTRACTIn 1939, Dr. Assar Hadding, the Director of the Geological Institute in Lund, Sweden, described two specimens (one of limestone and one of sandstone) that he believed to be of cosmic origin. This paper briefly reviews Hadding's account and discusses three other specimens, found in the United States, that may deserve consideration in connection with the specimens found in Sweden.

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00004.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00005.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00006.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

摘要:

ABSTRACTNeither theory nor the results of numerous observations made from military and commercial aircraft support the generally accepted belief that meteorite craters will prove to be quite easily discoverable by search from the air. As an indirect result of a campaign to discover new meteorite craters byairsearch, a possible meteorite crater on Amak Island in the Aleutians was reported by Charles Keenan, Second Batallion, 53rd Infantry, a member of the United StatesGroundForces. All details concerning the location and nature of this Aleutian crater so far made available to me are presented in this paper.

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00007.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00008.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

摘要:

ABSTRACTThe Carolina “craters” or “Bays” seem unlikely to have had a meteoritic origin, because: (a) not one meteorite is known to have been indisputably associated with any of the hundreds of craters, tho many are very small; (b) the subsurface strata are undisturbed; (c) the smaller craters are not more “filled‐in” than the larger; and (d) the symmetry of the Rains, South Carolina, group can hardly be explained by a chance distribution of 6 bodies traveli

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00009.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY

摘要:

ABSTRACTSilica debris reported from the explosion of atomic bombs may solve the problem of tektites and support the hypothesis of “contraterrene” meteori

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1947.tb00010.x

出版商:Blackwell Publishing Ltd    

年代:1947

数据来源: WILEY