Access the full text.
Sign up today, get DeepDyve free for 14 days.
Ergenzinger Ergenzinger, Schmidt Schmidt, Busskamp Busskamp (1989)
The Pebble Transmitter System (PETS): first results of a technique for studying coarse material erosion, transport and depositionZeitschrift für Geomorphologie N. F., 33
P. Ashworth, R. Ferguson (1989)
Size‐selective entrainment of bed load in gravel bed streamsWater Resources Research, 25
J. Laronne, M. Carson (1976)
Interrelationships between bed morphology and bed‐material transport for a small, gravel‐bed channel*Sedimentology, 23
Hubbell Hubbell, Sayre Sayre (1964)
Sand transport studies with radioactive tracersJournal of the Hydraulics Division, 90
H. Einstein (1942)
Formulas for the Transportation of Bed LoadTransactions of the American Society of Civil Engineers, 107
Schmidt Schmidt, Ergenzinger Ergenzinger (1990)
Radiotracer und Magnettracer—Die Leistungen neuer Meßsysteme für die fluviale DynamikDie Geowissenschaften, 8
Kirkby Kirkby (1991)
Sediment Travel Distance as an experimental and model variable in particulate movementCatena Supplement, 19
B. Gomez, M. Church (1989)
An assessment of bed load sediment transport formulae for gravel bed riversWater Resources Research, 25
Ergenzinger Ergenzinger, Schmidt Schmidt (1990)
Stochastic elements of bedload transport in a step‐pool mountain riverIAHS Publ., 194
H. Vallentine (1964)
Characteristics of the Backwater CurveJournal of Hydraulic Engineering, 90
Edmund Sneed, R. Folk (1958)
Pebbles in the Lower Colorado River, Texas a Study in Particle MorphogenesisThe Journal of Geology, 66
P. Komar, Zhenlin Li (1986)
Pivoting analyses of the selective entrainment of sediments by shape and size with application to gravel thresholdSedimentology, 33
Becht Becht (1986)
Die Schwebstofführung der Gewässer im Lainbachtal bei Benediktbeuern/Obb.Münchener Geographische Abhandlungen, B2
C. Yang, W. Sayre (1971)
Stochastic Model for Sand DispersionJournal of Hydraulic Engineering, 97
H. Ibbeken, R. Schleyer (1986)
Photo‐sieving: A method for grain‐size analysis of coarse‐grained, unconsolidated bedding surfacesEarth Surface Processes and Landforms, 11
P. Ergenzinger, J. Conrady (1982)
A new tracer technique for measuring bedload in natural channelsCatena, 9
Bunte Bunte, Ergenzinger Ergenzinger (1989)
New tracer techniques for particles in gravel bed riversBulletin de la Société Géographique de Liége, 25
Hassan Hassan, Schick Schick, Laronne Laronne (1984)
The recovery of flood dispersed coarse sediment particles—a three‐dimensional magnetic tracing methodCatena Supplement, 5
Schmidt Schmidt, Bley Bley, Busskamp Busskamp, Gintz Gintz (1989)
Die Verwendung von Trübungsmessung, Eisentracern und Radiogeschieben bei der Erfassung des Feststofftransports im Lainbach, OberbayernGöttinger Geographische Abhandlungen, 86
A. Chin (1989)
Step pools in stream channelsProgress in Physical Geography, 13
This paper reports results from bedload transport investigations with active (radio) and passive (iron, magnetic) tracers in the Lainbach, a step‐pool mountain river, in Bavaria, Southern Germany. The spatial distributions of the iron tracers after flood events can be best described by exponential or Gamma distributions. There is some indication of a tendency of size‐selective transport of the iron tracers, but there is also a considerable amount of scatter in the correlations between weight (size) and travel length owing to the masking influence of other variables, such as the shape of the particles and different positions in the river bed. The experiments with artificial magnetic tracers showed that elongated pebbles (rods) had the longest mean transport distance, platy ones (discs) remained relatively close to the starting points. The particles from the pool showed the greatest transport lengths and a 100 per cent chance of being eroded. The Pebble Transmitter System (PETSY) consists of transmitters implanted into individual pebbles, a computerized receiver, a stationary antenna system with an antenna switchboard, and a data logging system. The particles do not move continuously but in a series of transport steps and non‐movement intervals. A single value for a given size‐class is not adequate to describe the critical conditions of entrainment under natural circumstances. A probability approach is much more suitable. The critical unit discharges (total discharge divided by active channel width) along the measuring reach are dependent on river bed morphology. In the steps bedload needs higher unit discharges to be entrained. Once entrained, the transport of bedload is stochastic in nature and the single particle transport is controlled by the step lengths and the duration of rest periods. The distributions of both parameters can be approximated by exponential functions. Applying the stochastic concept proposed by Einstein the mean values of the random variables (step length) and (duration of rest period) measured with the PETSY technique were used for the simulation of spatial distributions of bedload particles from point sources. More field and laboratory data are needed to include varying flow and roughness conditions with tracers representing different particle characteristics.
Earth Surface Processes and Landforms – Wiley
Published: Mar 1, 1992
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.