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  • Articles  (2,827)
  • 1950-1954
  • 1945-1949  (2,827)
  • 1947  (2,827)
  • Geosciences  (1,563)
  • Computer Science  (1,264)
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  • Articles  (2,827)
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  • 1950-1954
  • 1945-1949  (2,827)
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  • 1
    Electronic Resource
    Electronic Resource
    ON THE BURTON-ON-TRENT EXPLOSION OF 1944 NOVEMBER 27 (1947)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 5 (1947), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Seismic waves from the Burton-on-Trent explosion of 1944 November 27 were recorded at four British and six continental stations. The five observations of Pn suggest that the times of Pn about distance 8° for a surface focus are 3s.9+.3 shorter than those given in my 1940 table. The anomaly cannot be explained by any permissible reduction of the thicknesses of the upper layers. It seems just possible that it might be explained by an increase of the velocity of Pn at short distances, but further investigation is needed before this explanation can be adopted. Sg was satisfactorily recorded, and it is likely that the low velocity of Sg found in the Oppau explosion was not due to misidentification, but to ordinary errors of observation.The energy of the explosion and that of the ground movement were in about the same ratio as in the Oppau explosion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1947.tb00345.x
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  • 2
    Electronic Resource
    Electronic Resource
    SEISMIC WAVES IN WESTERN AND CENTRAL EUROPE (1947)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 5 (1947), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: An examination of six near earthquakes in Western and Central Europe indicates that the velocity of P in this region is somewhat higher than in Southern Europe and Japan, the difference in dt/dΔ being about os.5/1°. The agreement found in a previous comparison is attributed to a possibility that P in the Tauern earthquake was read late owing to weakness. Apart from the Tauern earthquake the earthquakes used in previous discussions are consistent with the existence of the difference. The results are consistent with the observations of the Burton-on-Trent explosion provided that the foci were shallow, probably within the sedimentary layer. The direct examination of Pg and Sg at short distances leads to a suggestion of differences of focal depth, but this is contradicted by the comparison of P with Pg and of S with Sg. The chief anomaly outstanding is that the comparison of P with Pg suggests an increase in the allowance for the upper layers for a surface focus, that of S with Sg a decrease; the residuals of S and Sg show discrepancies at several points from the hypothesis that the errors are purely random, but their distribution does not suggest any explanation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1947.tb00346.x
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  • 3
    Electronic Resource
    Electronic Resource
    THE RANGE OF EXISTENCE OF RAYLEIGH AND STONELEY WAVES (1947)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 5 (1947), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1947.tb00347.x
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  • 4
    Electronic Resource
    Electronic Resource
    THE TIME NECESSARY FOR A BORE HOLE TO ATTAIN TEMPERATURE EQUILIBRIUM (1947)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 5 (1947), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The time for which it is necessary to leave a bore hole in order that the disturbance of temperature due to drilling may have disappeared is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1947.tb00348.x
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  • 5
    Electronic Resource
    Electronic Resource
    TERRESTRIAL HEAT FLOW IN PERSIA (1947)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 5 (1947), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Measurements are described which permit the determination of the terrestrial heat flow in eighteen bore holes in S.W. Persia. The variations of heat flow that are found to exist can to a large extent be explained by the geological structure. The influence of topographic irregularities, climatic changes, recent tectonic movements and denudation upon the heat flow is discussed. If we assume that the climate has become warmer in the last 10,000 years this may have reduced the terrestrial heat flow by at most 0.31×10−6 cal./cm.2 sec. The other agencies discussed have only a small influence upon the observed heat flow. The mean value of the heat flow in eighteen bore holes is 0.87×10−6 cal./cm.2 sec. This is a low value, but it agrees rather well with the recently determined values of 0.98×10−6 in Great Britain and 1.16×10−6 in South Africa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1947.tb00349.x
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  • 6
    Electronic Resource
    Electronic Resource
    AN INVESTIGATION INTO THE CAUSES OF THE ANNUAL VARIATION OF MEAN SEA-LEVEL IN THE NORTH SEA (1947)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 5 (1947), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A study of the Tidal records for North Sea ports reveals, for each port, an annual variation. The maximum occurs in the late autumn (usually in November) and the minimum in the spring (usually in May). The main factors causing this variation are (i) seasonal changes in the strength of the prevalent winds, (ii) seasonal changes in the density of the water. The magnitudes of these effects are obtained. The results show that there is an annual variation in the “calm” level of the North Sea, varying from 8 cm. in the Northern half to some 15 cm. in the Southern half.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1947.tb00350.x
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  • 7
    Electronic Resource
    Electronic Resource
    L'attivita' dell'Osservatorio Ximeniano nel 1946 (1947)
    Springer
    Pure and applied geophysics 10 (1947), S. 11-20 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Résumé On fait connaître les conditions et les activités actuelles de l'Observatoire; on expose, par moyen de prospects, les principales valeurs météoriquesnormales et on les confronte avec les valeursmoyennes corréspondantes de l'année 1946; enfin on énumère et on classifie les tremblements de terre enrégistrés pendant la dernière année.
    Abstract: Summary We take care to notify the present conditions and activity of the Observatory. We are showing through some prospects the chief meteorologicalnormal values, confronting them with the respective middle values of the year 1946. At the end we give a statistical sketch of the earthquakes registered during the last year.
    Notes: Riassunto Si rendono note le condizioni e le attività attuali dell'Osservatorio; si espongono, mediante alcune tabelle, i principali valori meteoricinormali e si confrontano coi rispettivi valorimedi del 1946; infine si enumerano e si classificano i terremoti registrati nell'ultimo anno.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01996363
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  • 8
    Electronic Resource
    Electronic Resource
    Costanti armoniche e non armoniche delle Maree di Porto Lignano (1947)
    Springer
    Pure and applied geophysics 10 (1947), S. 21-28 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary Porto Lignano is situated between Trieste and Venice. The self-reconding tide gauge have a height ratio 1∶10 and a time scale 7,2 cm/day. The method of analysis adopted for the calculation of harmonic tidal constant is that ofDoodson applied to 3 months. The tides are generally semidiurnal, near the quadrature they becom diurnal. From the harmonic constant are deducted the nonharmonic. The determined values are compared with that of Trieste and Venice.
    Abstract: Zusammenfassung Porto Lignano liegt zwischen Triest und Venedig. Der selbstregistriende Pegel reduziert im Verhältnis 1∶10 und hat einen Ablauf von 72 mm pro Tag. Die harmonischen Konstanten wurden mit derDoodson Methode von einer dreimonatlichen Reihe berectnet. Die Tiden sind vorwiegend Halbtagsgezeiten, bei den Quadraturen werden sie Eintagstiden. Aus den harmonischen Konstanten wurden die nictharmonischen Konstanten abgeleitet. Die berechneten Werte wurden mit jenen von Triest und Venedig verglichen.
    Notes: Riassunto Porto Lignano si trova fra Trieste e Venezia. Il mareografo riduce nel rapporto 1∶10 e ha uno scorrimento di 72 mm per giorno. Le costanti armoniche sono dedotte col metodo delDoodson da una serie di tre mesi. Le maree sono di tipo prevalentemente semidiurno, in vicinanza alle quadrature diventano diurne. Dalle costanti armoniche si deducono quelle non armoniche. I valori trovati si confrontano con quelli di Trieste e Venezia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01996364
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  • 9
    Electronic Resource
    Electronic Resource
    Analisi periodale delle serie dei livelli marini di Trieste e Venezia (1947)
    Springer
    Pure and applied geophysics 10 (1947), S. 29-40 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary To the series of yearly values of the mean heights of the sea-level for the ports of Trieste and Venice has been applied the periodal analysis after the method ofVercelli. From this are derived component waves almost-persistent and almost-periodical of 22, 11,3, 8, 5,5, 4, 3, 2 years. The mean axis shows the following variations for every ten years: an ascent of 2 cm in the port of Trieste and of 2.5 cm in the port of Venice.
    Abstract: Zusammenfassung Es wird dieVercelli Periodalanalyse an den zwei Reihen, eine 50- eine 70jährige, von jährlichen mittleren Wasserständen bezüglich der Hafen von Triest und Venedig angewendet. Man erhält Komponentwellen die Perioden von 22-11,3-8-5,5-4-3-2 Jahren haben. Die entsprechenden Wellen der zwei Lokalitäten sind in einer guten Uebereinstimmung der Phase. Die Amplituden der Komponentwellen von Venedig sind etwas grösser als diejenigen von Triest. Die mittlere Achse stellt einen Aufstieg dar, welche für ein Jahrzehnt 2 cm für Triest und 2,5 für Venedig beträgt.
    Notes: Riassunto Alle due serie di livelli medi, quella cinquantennale di Trieste e quella settantennale di Venezia, si applica l'analisi periodale secondo il metodoVercelli. Si ottengono onde componenti di anni 22, 11,3, 8, 5,5, 4, 3, 2. Le onde corrispondenti delle due località sono in buon accordo di fase. Le ampiezze delle componenti di Venezia sono leggermente maggiori di quelle di Trieste. L'asse medio del diagramma di Trieste presenta una salita di 11 cm in 52 anni, quello di Venezia di 15 cm in 70 anni.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01996365
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  • 10
    Electronic Resource
    Electronic Resource
    Sulla definizione di clima arido (1947)
    Springer
    Pure and applied geophysics 10 (1947), S. 1-10 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Résumé Deux définitions nouvelles des climats arides sont discutées: celle deM. Gorczynski, basée sur sonfacteur d'aridité et celle de l'auteur appliquant l'indice de sécheresse. Toutes les deux définitions sont quantitatives et, par conséquence, permettent de préciser la sorte du climat aride, si les données méteorologiques sont disponibles. D'aprèsM. Gorczynski le facteur d'aridité est proportionnel àcosec ϕ (facteur de latitude), à la variation annuelle della température, ainsi qu'au rapport de précipitation, et il éxige en principe une période de 50 ans d'observations. Si le facteur d'aridité est inférieur au 20% il dénote, d'aprèsM. Gorczynski, un climat modéré. Si sa valeur est entre 20 et 40% le climat est de steppe. D'ailleurs si le facteur d'aridité surpasse le 40% le climat en question est de désert. La colonne avant dernière du Tab. I représente quelques données numériques du facteur d'aridité. La définition de l'auteur n'est pas limitée au régime de température et de précipitation, puisqu'elle comprends aussi les autres facteurs «faisant un désert» et en première ligne l'évaporation. Sonindice de sécheresse est défini comme le rapport de l'évaporation possible et de la précipitation moyenne. L'auteur a trouvé que l'indice de sécheresse inférieur à 6 dénote un climat modéré, pendant que une valuer entre 6 et 20 correspond à un climat de steppe; enfin une valeur de l'indice surpassant 20 dénote un climat de désert. Le Tab. I contient les données numériques de l'indice de sécheresse D'arrangées suivant une série croissante. Certains cas sont discutés dans lesquels l'indice de sécheresse détermine un climat plus éxactement que le facteur d'aridité.
    Notes: Summary Two new definitions of arid climates are discussed in this paper:W. Gorczynski's, definition depending on hisaridity factor and the author's own definition which is based on hisdryness index. Both definitions are quantitative and therefore allow to determine exactly a dry climate, if meteorological data are available. Thearidity factor is admitted to be proportional tocosec ϕ (latitude factor), to the annual range of temperature and to the «precipitation ratio» and requires in principle a period of 50 years of observations for its determination. According toGorczynski a value of the aridity factor below 20% determines one of the moderate climates; a value between 20 and 40% denotes a steppe climate and above 40% a desert climate respectively. Some of the aridity data are given in the last but one column of the Tab. I. The author's definition is not restricted to temperature and precipitation regime only, but includes also other «desert making factors» and particularly the evaporation. Hisdryness index is defined as a ratio of evaporation capacity and mean precipitation. It has been found that dryness index below 6 denotes a moderate climate, while between 6 and 20 it determines a steppe climate; if however it excedes 20, it corresponds to a desert climate. The numerical values of the dryness index D, arranged as a growing series, are shown in Tab. I. Some cases, in which the dryness index better denotes a climate, than the aridity factor, are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01996362
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