FST - Hemispheres
Set of hemispheres used for assessing near-bottom flow conditions in running waters.
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About
The FST Hemisphere method describes near-bottom flow conditions in running waters. The method is based on a simple concept: the weight of a hemisphere exposed to flow is moved by a given current from a reform plate. The kit consists of 21 identical hemispheres with different specific gravities. This technique provides a practical alternative or supplement to propeller-type flow meters, which are often unreliable near the bottom or in vegetated streams. The hemisphere method supports detailed evaluation of physical environments when restoring natural watercourses or establishing spawning banks, especially when flow forces near the streambed are of interest.
Features
Highlighted features for FST - Hemispheres
Specifications
FST - Hemispheres Specifications
- Material
- Plexiglas hemispheres
- Number of hemispheres
- 21
- Measurement reference
- Freshwater Biology 21: 445-459 (Statzner & Müller, 1989)
Standard Delivery Content
The contents of a standard order of FST - Hemispheres
- 21 hemispheres with different specific gravity
- Plexiglas plane for field setup
- Manual with instructions for field procedures
Application
Used for measuring near-bottom flow strength and characterizing hydrodynamic conditions in rivers, streams, and shallow running waters. Especially suitable for restoration projects and benthic habitat studies.
