Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2004
Volume 7
Issue 2
Topic:
Environmental Development
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Radecki-Pawlik A. 2004. IN STREAM HYDRAULICS,GRANULOMETRY AND SEDIMENT CHEMISTRY OF A MOUNTAIN STREAM WITHIN GRAVEL BAR REGIONS, EJPAU 7(2), #03.
Available Online: http://www.ejpau.media.pl/volume7/issue2/environment/abs-03.html

IN STREAM HYDRAULICS,GRANULOMETRY AND SEDIMENT CHEMISTRY OF A MOUNTAIN STREAM WITHIN GRAVEL BAR REGIONS

Artur Radecki-Pawlik

 

ABSTRACT



The paper presents the results of examination some basic granulometric and hydraulic parameters such as changes in granulometry, velocity, shear stresses, Froude number, Reynolds number and flow resistance coefficient within the region of two different gravel bars in the mountain stream. The sediment samples were taken from points situated along the bars and from the riverbed in the area where the bars have their influence on the river regime. On the top of the granulometry and hydrodynamics survey there were also the chemical properties of the sediments, including heavy metals, examined. The main conclusion of the paper is that a point bar (developed on the river band) is less stable, than an up-of the obstruction bar (an alternate bar) developed along the river bank. Also there are number of observations connected with the hydrodynamics influence on stream bars formation. The study was undertaken on the Skawica-Jałowiecki Stream in the Polish part of the Carpathian Mountains.

Key words: gravel bar, granulometry, shear stress, shear velocity, hydraulics, mountain stream, bedload, heavy metals.