ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles  (7)
  • Articles: DFG German National Licenses  (7)
  • Hydrology
  • Springer  (7)
  • International Union of Crystallography (IUCr)
  • 1990-1994  (7)
Collection
  • Articles  (7)
Source
  • Articles: DFG German National Licenses  (7)
Keywords
Publisher
  • Springer  (7)
  • International Union of Crystallography (IUCr)
Years
Year
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Surface hydrology and soil movement in an arid karst: the Nullarbor Plain, Australia (1994)
    Springer
    Environmental geology 23 (1994), S. 125-133 
    Details
    ISSN: 1432-0495
    Keywords: Karst ; Soil movement ; Hydrology ; Australia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Nullarbor Plain is the largest karst area in Australia (220,000 km2) and one of the largest in the world. Its climate is arid (Köppen BWk and BWh), and the surface relief is less than 10m. The landscape is divided into extensive closed karstic depressions separated by low rocky ridges, and the dominant vegetation is chenopod shrubland. The extent and severity of soil degradation has been assessed using remote sensing. GPS rectified images from 1972–1973, 1979, 1983, 1988, and 1991 have been compared for two sites on the Nullarbor. Over the 19 years the total extent of bare soil has reduced significantly, but some areas around water points have degraded and there is some disturbance due to fossorial wombats. Sheet-flow processes occur during intense rainfall events, which happen two or three times per decade. Runoff only occurs after the 10− or 50− year return frequency events, and at these times turbid water ponds in depressions and enters caves. Surface soil sorptivity and hydraulic conductivity differ markedly between ridges and depressions; the ridges are clearly zones of groundwater recharge, while ponding is evident in most depressions. Sorptivity is influenced by the extent and nature of ground cover and cryptogam crusts on the soil. The landscape has been divided into classes on the basis of vegetation type and percentage of foliage cover. In each class the activities of fallout radionuclides will be determined by high resolutionγ spectroscopy. Preliminary results suggest that in undisturbed sites little sediment movement has occurred over the time scale of cesium-137 (the last 35 years) but that the landscape has been well sorted over a much longer time scale. Future work will investigate disturbed sites to estimate relative soil loss during the pastoral period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00766986
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Hydrological and hydrogeological characteristics of Wadi el Mujib catchment area, Jordan (1993)
    Springer
    Environmental geology 22 (1993), S. 257-271 
    Details
    ISSN: 1432-0495
    Keywords: Hydrology ; Hydrogeology ; Catchment area ; Water resources
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Hydrological and hydrogeological data in the area have been verified to evaluate the availability and the potentiality of the water resources for the proposed damsites in the Wadi el Mujib catchment area, which is considered a semiarid to arid region. The quantity of the surface waters is very small compared with the surface area of the basin, however, due to the shortage of precipitation in the country and the necessity to attain socioeconomic objectives, the investigation of these waters has become more vital. The most reliable exploitation can be essentially achieved by constructing small storage dams on the suitable sites in order to benefit from the flood waters coming from the main wadis. For the above purpose, the hydrogeological and hydrological study of Wadi el Mujib catchment area was carried out, where the Wadi Mujib dam site will be constructed. The hydrogeological investigation of the groundwater was performed by constructing a groundwater contour map of the Amman-Wadi Es Sir aquifer (B2/A7) so as to verify the groundwater flow system and to determine the potentiality of the aquifer from the hydraulic parameters obtained from the pumping test analysis. The hydrological feasibility study of the dam was carried out by evaluating the water balance for a long-term period (1970 to 1990) in order to obtain reliable data that can be used to estimate the recharge to B2/A7 aquifer. In addition, a frequency analysis was performed to estimate the flood design of the reservoir area as well as the spillway at the proposed dam site.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00767411
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Statistical validation of GCM-simulated climates for the U.S. Great Lakes and the C.I.S. Emba and Ural River basins (1992)
    Springer
    Stochastic environmental research and risk assessment 6 (1992), S. 69-80 
    Details
    ISSN: 1436-3259
    Keywords: Hydrology ; global circulation models ; statistics ; climate change
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract Many researchers use outputs from large-scale global circulation models of the atmosphere to assess hydrological and other impacts associated with climate change. However, these models cannot capture all climate variations since the physical processes are imperfectly understood and are poorly represented at smaller regional scales. This paper statistically compares model outputs from the global circulation model of the Geophysical Fluid Dynamics Laboratory to historical data for the United States' Laurentian Great Lakes and for the Emba and Ural River basins in the Commonwealth of Independent States (C.I.S.). We use maximum entropy spectral analysis to compare model and data time series, allowing us to both assess statistical predictabilities and to describe the time series in both time and frequency domains. This comparison initiates assessments of the model's representation of the real world and suggests areas of model improvement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01581676
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Observed advantage for negative binomial over Poisson distribution in partial duration series (1991)
    Springer
    Stochastic environmental research and risk assessment 5 (1991), S. 135-146 
    Details
    ISSN: 1436-3259
    Keywords: Hydrology ; runoff ; partial duration series ; negative binomial distribution ; Poisson distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract The goodness of fit of the negative binomial and the Poisson distributions to partial duration series of runoff events is tested. The data have been recorded by eight hydrometric stations located on ephemeral rivers in Isreal. For each station, a number of threshold discharges are considered, by that series of nested subsamples are formed. Owing to size limitations, a Chi-square test is conducted on samples associated with low to moderate threshold discharges. Positive results, at a 5% significance level, are obtained in 30 out of the 53 tests of the Poisson distribution, and in 22 out of the 28 tests of the negative binomial distribution. The fit of the Poisson distribution to samples of conventionally recommended sizes (of 2 to 3 events per year) is found positive for five rivers and negative for the three other rivers The fit of the negative binomial distribution to these samples is found positive for six rivers, inconclusive for one river and short of data for the eighth river. Mixed results are obtained as the threshold level is raised. Therefore, no direct extrapolation is possible to samples associated with high thresholds. An indirect extrapolation is drawn through a comparison of the actual properties of the samples with those expected under a perfect fit of the distribution functions. Ranges of such properties are defined with respect to the properties of the tested samples and to the test results. The actual properties of nine of the eleven samples associated with high thresholds (i.e. mean number of events 〈-0.1year −1) are found within these ranges. This provides a hint for a probable good fit of either distribution, and particularly the negative binomial, to the occurrence frequency of high events.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01543055
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    On some apparent paradoxes in water spreading, hydrology and seepage (1991)
    Springer
    Water resources management 4 (1991), S. 273-281 
    Details
    ISSN: 1573-1650
    Keywords: Hydrology ; infiltration ; water spreading ; drainage ; cavitation ; anisotropy ; paradoxes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract In water spreading and underground hydrology, one should beware of pitfalls. This is illustrated by several examples of vertical downflow and upflow. Drainage by overcharging: When a fine-grained soil overlies a coarse-grained soil, a certain amount of water can be suspended in the interzone. Adding water may cause excessive drainage. Cavitation in soils: When water flows from an upper less pervious layer to a more pervious layer, the pressure head in the interzone may become negative, the gases dissolved are released in the form of bubbles which render the soil temporarily impervious. At the initial instant of seepage of water from a pond into a dry soil, inertial forces and kinetic energy cannot be neglected. At the interface of two anisotropic media, the angle of refraction of a streamline depends on the tangential hydraulic conductivity only, whereas that of a gradient line depends on the normal component only. Impossibility of steady-state evaporation from a deep water table: It is shown that the water concentration may become negative, which is physically impossible. Two modes of downflow: In insaturated downflow there exists a critical water concentration c such that the corresponding hydraulic conductivity K(c) is equal to the descending specific flux. The moisture distribution is radically different in the subcritical and supercritical zones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00430341
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Symbiosis between systems engineering and hydrology (1990)
    Springer
    Water resources management 4 (1990), S. 161-173 
    Details
    ISSN: 1573-1650
    Keywords: Hydrology ; water management ; systems science ; control ; systems engineering ; systems scientists
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract The system concepts of importance to hydrological sciences are reviewed. The epochs of the development of systems sciences are discussed and their links with hydrological and water resources research are illustrated. Potentials and limitations of the system approach are discussed and the perspectives of further applications are sketched.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00431141
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    A new ‘momentum method’ for the quantitative and qualitative evaluation of Polish rivers (1990)
    Springer
    Water resources management 4 (1990), S. 219-227 
    Details
    ISSN: 1573-1650
    Keywords: Hydrology ; water quality ; momentum equation ; Polish rivers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract There is a tendency in water management to identify the resources of surface waters with river discharge expressed by the intensity of the flow. However, such an evaluation is insufficient because of the difficulties in the water-economic balancing of the basin resources, since it does not take into account the volume of water contained in the river channel. With heavy pollution of the water flowing in the river channel, this fact may have a considerable influence on the representativity of the balance. The above reasons have become a basis for the introduction of a new measure for the evaluation of pollution resources of flowing water. The quantity of water in motion in a river channel is expressed by the momentum equation. Evaluation of water resources has been carried out for 83 rivers in the Vistula Basin and 52 rivers in the Odra Basin by means of the stream momentum method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00431145
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...