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  • Articles  (110)
  • Geography  (110)
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  • Articles  (110)
Journal
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Cities 6 (1989), S. 50-58 
    ISSN: 0264-2751
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Cities 7 (1990), S. 72-73 
    ISSN: 0264-2751
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Estuarine, Coastal and Shelf Science 35 (1992), S. 473-489 
    ISSN: 0272-7714
    Keywords: Australia coast ; dredging ; mud suspension ; sea dumping ; sedimentation ; settling
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geography , Geosciences
    Type of Medium: Electronic Resource
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  • 4
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    Chicago : Periodicals Archive Online (PAO)
    Economic development and cultural change. 6:1 (1957:Oct.) 16 
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  • 5
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    Unknown
    Chicago : Periodicals Archive Online (PAO)
    Economic development and cultural change. 9:2 (1961:Jan.) 164 
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 35 (1986), S. 166-176 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Zum Studium der Schwankung der 30–50tägigen Aktivphase des indischen Sommermonsuns wurden Zeitreihen von sieben Niveaus aus vier Sommern (1977–1980) der globalen NMC-Analyse herangezogen. Nach einer dem Zeitintervall von 30–50 Tagen entspiechenden Filterung wurden der zonale Wind, die relative Vorticity und die Divergenz dargestellt. Die Vertikalstruktur ist zwischen 100 kPa und 10 kPa komplex. Die aktive Zone in 85 kPa bewegte sich im Sommer 1979 stetig nach Norden, weniger in den anderen Jahren. in 20 kPa 1979 nordwärts, dagegen südwärts 1977 und 1980. 1978 war die Bewegung nicht eindeutig. Beginn und Ende des Monsuns sind stark mit 30–50 tägigen zyklonalen bzw. antizyklonalen Aktivitäten verbunden. Außerdem bildeten sich etwa 90% aller Depressionen der Sommer 1977 und 1979, sowie 70% der Sommer 1978 und 1980 in Regionen mit zyklonaler Vorticity im Zeitscale von 30–50 Tagen. Rotationszirkulationen sind in diesem Zeitscale in der NMC-Analyse viel stärker als divergente Zirkulationen.
    Notes: Summary In order to study the interannual variability of the 30–50 day activity in the southwest monsoon, time series at seven levels over India were formed using the NMC global analysis for four summers (1977–1980). After 30–50 day bandpass filtering, graphs of zonal wind, relative vorticity and divergence were plotted. Vertical structure of the activity is complex between 100 kPa and 10 kPa. Activity at 85 kPa moved northward, steadily in the summer of 1979 but less so in the other three summers. At 20 kPa, propagation was northward in the summer of 1979 but southward in the summers of 1977 and 1980. Meridional propagation was not clear at 20 kPa during the summer of 1978. Monsoon onset and breaks are highly correlated with 30–50 day cyclonic and anticyclonic activity, respectively. In addition, about 90% of the depressions in the summers of 1977 and 1979, and about 70% of the depressions in the summers of 1978 and 1980 formed within regions of cyclonic vorticity on the 30–50 day time scale. Rotational circulations are much stronger than divergent circulations on this time scale in the NMC global analyses.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 29 (1981), S. 345-356 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Auf Grund von Berichten über 51 Tornados seit 1835 wird eine klimatologische Beschreibung dieser Wirbelstdrme über dem indischen Subkontinent erstellt. Diese Stürme treten am häufigsten am Spätnachmittag wahrend der Vormonsunmonate in Nordostindien und Bangladesch auf. Ein sekundäres Häufigkeitsmaximum existiert wahrend der postmonsunalen Übergangsjahreszeit im Nordosten Indiens. Überdies wurden Tornados aus einem Korridor berichtet, der sich nordwestwärts gegen Pakistan hin erstreckt. Die charakteristischen Wetterlagen der Vormonsunmonate, welche das Auftreten von Tornados fördern, werden beschrieben. Tornadozyklen scheinen mit Perioden reduzierter tropischer Zyklonenaktivität korreliert zu sein.
    Notes: Summary On the basis of 51 tomadic events reported since 1835, the climatology of tornadoes across the Indian Subcontinent is elucidated. Tornadoes are most likely to occur during the late afternoon of the pre-monsoon months in northeast India or Bangladesh. A secondary maximum exists for the post-monsoon transitional period in the Northeast; moreover, tornadoes have been reported in a corridor extending to the northwest toward Pakistan. The characteristic weather patterns favoring the pre-monsoon severe storms are described. It is speculated that cycles of tornado years may be correlated to periods of reduced tropical cyclone activity.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 44 (1990), S. 11-28 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Summary Twice-daily radiosonde records for Calcutta, Madras, Nagpur, New Delhi, Trivandrum, and Visakhapatnam have been quality checked and analyzed for intraseasonal activity in the summer monsoon. The records for all six cities end on 30 June 1978 and are 17–27 years long. Spectra were estimated by smoothing periodograms and by using the maximum entropy method (MEM), which entails fitting an autoregressive (AR) model. We show how confidence limits can be placed on an average of MEM spectral estimates using the Central Limit Theorem and how this helps pick the orders of the AR models to be tried. We donot favor use of Akaike's Final Prediction Error in choosing the model order, because it can grossly underestimate the AR model order needed to resolve low frequency peaks. MEM spectra of zonal wind based on thirtieth order AR models have large peaks around 30 day time scales. 10–20 day activity is identifiable but is much less prominent. On average, 3–5 day time scales are part of the spectral continuum and do not have a significant spectral peak. Time-height diagrams of filtered zonal wind show that a deep layer of the troposphere acts in phase on 30–50 day time scales over India. The shortest vertical length scale is over southern India and the longest is over northern India. Vertical phase propagation is irregular except over Nagpur, where it is generally upward. Empirical orthogonal functions indicate that vertically “in phase” activity has more variance (kinetic energy) than the first baroclinic mode.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Summary The role of organized tropical storms and typhoons within the West Pacific-Indian Ocean dipole of low frequency activity is examined with the aid of INSAT satellite observations. Two Asian summer monsoon seasons-1984 and 1987-are analyzed in conjunction with a satellite derived convective index. The former year was noted as an above average Indian monsoon; the latter year as an extreme Indian monsoon failure. The analysis demonstrates that the dipole region is actually an organized collection of seven smaller scale high amplitude, low frequency centers which blur together to form the semblance of a dipole which had been originally identified in 2.5° resolution outgoing Longwave Radiation (OLR) data derived from NOAA satellite measurements. The centers are basically situated over oceanic regions in the eastern and western sectors of the dipole, although, an isolated high amplitude center is also found over central Tibet. Of considerable interest is that the locations of the seven centers, whereas not equivalent, are very similar for both the 1984 and 1987 seasonsinar. The analysis indicates that there are coherent phase relationships between the eastern sector of the dipole and the western sector, but that it is not a simple dipole-like process. Rather, the four high amplitude centers, within the western sector, all fall within a longitudinal channel in which the well known, northward propagating behavior of Monsoon convection anomalies serves to modulate the east-west phase lag along the meridional channel. The result is that the western paelfic phase lags the equatorial Indian Ocean center whereas it generally phase leads the more northern centers within the Arabian Sea and Bay of Bengal. In the two years studied here, there is little evidence of east-west propagation of anomalies between he two centers. The contribution of organized tropical storms and cyclones to the amplitude and phase characteristics of the high amplitude centers is irregular but important, particularly in the eastern sector of the dipole, where up to 50% of the variance can be explained by organized storms. It is also shown that the influence of storms on the phase propagation characteristics of convective anomalies is irregular but significant.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    International journal of biometeorology 27 (1983), S. 41-46 
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract The blood samples from fifteen normal lactating buffaloes were taken from December 15th 1978 to 31st August, 1979. Depending upon the climatic conditions, the whole period of study was divided into four seasons. The mean values of carbonic anhydrase (moles CO2/l/sec×10−5) were 3.08±0.26, 4.94±0.44, 5.23±0.35, 6.44±0.32 in pregnant and 4.87±0.27, 4.53±0.41, 4.74±0.45, 6.36±0.40 in non-pregnant animals during winter, spring, hot and dry and hot and humid seasons. Mean values of pO2 (mm Hg) were 31.26±1.41, 31.92±0.61, 35.90±0.59, 33.80 ±0.67 in pregnant and 31.89±0.44, 31.53±0.54, 35.52±0.69, 31.65±0.95 in non-pregnant buffaloes during winter, spring, hot and dry and hot and humid periods, respectively. There were highly significant (P〈 0.01) differences between seasons with respect to pO2, pCO2, actual HCO3 and heamoglobin. However, PCV changed significantly (P〈0.01) with the physiological status of the animal. Different correlation of biochemical parameters with climatic elements were discussed. Thus, the shifts in the levels of carbonic anhydrase, HCO3 and heamoglobin may prove to be a better tool/index for thermal stress in buffaloes.
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