ISSN:0020-6024    

DOI:10.1080/02626667109493769

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

In case of natural watercourses a permanent, gradually varying flow occurs only very rarely. Moreover at those wa*** courses where bed-load has a role, nearly always non-steady flow is the case. Any change in the flow evidently affects the dist*** covered by one step and the lengths of the rest periods between the single steps. For this reason no restriction has been m*** in the model for the density functions characteristic of the distribution of step lengths of a studied particle as of random *** ables, that isthe step lengths are independent of each other and they represent a random variable having not necessarily only type of density function.As it is well-known, Einstein (2) supposed the distances covered by one step to be equal; while Hul and Sayre (15) applied in their model as starting condition the approach that the step lengths of the bed-load are of exponer*** distribution.

ISSN:0020-6024    

DOI:10.1080/02626667109493770

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

A lot of different distribution functions have been proposed to represent the precipitation totals collected in k days, and in particular a transformed incomplete gamma distribution aimed to be the basis of the searched law (Formula 3.).

ISSN:0020-6024    

DOI:10.1080/02626667109493771

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

The chemical composition of formation waters tapped in oil wells and emerging as hot springs along the Suez coast of Sinai was examined. A scheme is proposed for the geochemical evolution of these waters and their relation to the geological history of the area.

ISSN:0020-6024    

DOI:10.1080/02626667109493772

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

The degree of protection at any arbitrary cross-section of the levee is defined as the minimum flood exposure, which the levee is just capable of withstanding without special protective measures. The degree of protection offered by a levee section can be found by statistical analysis. For finding the minimum flood exposure the potential causes of failure must be investigated. These are influenced by the shape of the flood hydrograph i.e., by hydrological conditions, the seepage, i.e., hydraulic phenomena within the levee body, geological and soil mechanical factors depending on the quality of soils in the levee and its subsoil, and finally by wave action, which is controlled by topography and the meteorological conditions. Mathematical models of identical character lend themselves for the analysis of each of the four phenomena. The mathematical model serving the determination of the flood exposure critical for wave action is presented as an example. The probability of the highest flood stage increased by wave height can be computed therewith for the cross-section under consideration.

ISSN:0020-6024    

DOI:10.1080/02626667109493773

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

The study is based on the 121 answers to the international survey on ground water recharge published in I.A.S.H. bulletin n° 87.

ISSN:0020-6024    

DOI:10.1080/02626667109493774

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

Using the Rhine as an example, a method is shown which should render possible long-termp redictions of river-flows to a certain extend on the basis of sufficiently long series of recordings.

ISSN:0020-6024    

DOI:10.1080/02626667109493775

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

ISSN:0020-6024    

DOI:10.1080/02626667109493776

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

ISSN:0020-6024    

DOI:10.1080/02626667109493777

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

ISSN:0020-6024    

DOI:10.1080/02626667109493778

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor