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1.
Kazimierz M. Borkowski 《Astrophysics and Space Science》1985,111(1):203-205
A theorem, which provides a relationship between the one-dimensional Fourier transform of a line section across two-dimensional (spatial) spectrum and that across the correspoding (brightness) distribution function, is proved. The theorem is then shown to be relevant in some problems in radio astronomy and possibly in other fields connected with image reconstructions from one-dimensional scans through objects or their spectra. 相似文献
2.
Kazimierz M. Borkowski 《Earth, Moon, and Planets》1996,74(3):223-230
Using the analytical theory of the motion of the Earth around the Sun the times of the vernal (Spring) equinox has been calculated over the period from the Hijra (AD 622) to AD 3800. These data alone allow to decide whether a particular Persian (or Jalaali) calendar year is common or leap. Presented analysis shows that an algorithm implemented in the so called Khayam program is valid for the year 1799 to 2256 (1178 to 1634 Jalaali). A concise algorithm has been worked out that reconstructs the pattern of leap years over time span of about 3000 years. FORTRAN routines for conversion between the Jalaali, Gregorian and Julian calendars and the Julian Day Number are presented. 相似文献
3.
Kazimierz M. Borkowski 《Solar physics》1982,81(2):207-215
A correction and analysis of routine total flux measurements made in Toru at 127 MHz allowed for the determination of the peak brightness temperature of the Sun (above 9 × 105 K) in three periods grouped around the last minimum, and for estimation of the brightness temperature of the coronal holes: (7.3 ± 1.4) × 105 K. 相似文献
4.
A. M. Dziewonski J. E. Franzen J. H. Woodhouse 《Physics of the Earth and Planetary Interiors》1985,40(4):249-258
Centroid-moment tensor solutions are presented for 170 earthquakes that occurred during the first quarter of 1985. The solutions are obtained using corrections for aspherical Earth structure. 相似文献
5.
In the Vistula valley near Góra, at the northern foreland of the Carpathians Mountains, there are young alluvia deposited in the historical period. These alluvia are difficult to date precisely because of the lack of organic interbedded material. In the Vistula drainage basin upstream of Góra since the second half of 18th century small centres of metal, textile, motor, and petrochemical industries have been developed. Concentrations of trace elements such as: Cr, Mn, Co, Ni, Cu, Zn, Cd, Pb, and of some macroelements were used as indicators of the age of different alluvial fills. The main part of the Vistula valley floor was built up by sediment accumulation before the development of industry but after the medieval phase of rural colonization of the Carpathians. Deposits filling the abandoned channels dissecting the valley floor have an increased content of some trace elements and deposits date from the second half of the 18th century, when the first foundries and blacksmith's shops were developed. A drastic increase of concentration of the most abundant trace elements in the youngest alluvial fill indicates that the fill dates from the last decade of rapid industrial development. 相似文献
6.
A.M. Dziewonski J.E. Franzen J.H. Woodhouse 《Physics of the Earth and Planetary Interiors》1984,34(4):209-219
Centroid-moment tensor solutions are presented for 148 earthquakes that occurred during the first quarter of 1984. The solutions are obtained using corrections for aspherical Earth structure. 相似文献
7.
A.M. Dziewonski J.E. Franzen J.H. Woodhouse 《Physics of the Earth and Planetary Interiors》1983,33(4):243-249
Centroid-moment tensor solutions are presented for 99 earthquakes that occurred during the second quarter of 1983. 相似文献
8.
Recent Improvements in the Analysis of Surface Wave Observations 总被引:2,自引:0,他引:2
9.
Wolf Tietze Gerhard Kortum W. R. Mead T. K. Poiker C. Paddick George Kish A. Njøs H. Mensching V. Haarmann Uzo M. Igbozurike M. M. Yoshino Mushtaqur Rahman Lage Wahlström J. Connell Kazimierz Dziewonski Wayland R. Swain J. Humlum G. W. Lüttig Haruko Kishimoto Mai Britt E. Mørk 《GeoJournal》1982,6(3):270-280
10.