Journal: Schweizerische Zeitschrift für Hydrologie

Abbreviation

Schweiz. Z. Hydrol.

Publisher

Birkhäuser

Journal Volumes

ISSN

0036-7842

Description

Filters

1957 - 195911980 - 19873
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Publications 1 - 4 of 4
  • Die Eigenschwingungen der durch den Kanal im Damm von Melide gekoppelten Becken des Luganersees
    Item type: Journal Article
    Trösch, Jürg; Salvadè, Giorgio; Stocker, Kurt (1987)
    Schweizerische Zeitschrift für Hydrologie
    The northern and the southern basin of Lake Lugano, Switzerland, are separated by an artificial dam. The flow of the water is not only influenced by the outflow of the northern basin but also by gravitational oscillations (seiches) of both basins. A longperiodic peak around 100 minutes can be explained by a mathematical model. The interaction of the internal waves is a coupled oscillation with a period of 74 hours.
  • Die Einschichtung der Rhone im Genfersee: Ergebnisse von Strömungsmessungen im August 1983
    Item type: Journal Article
    Giovanoli, Federico; Lambert, André (1985)
    Schweizerische Zeitschrift für Hydrologie
    Results obtained by means of an ultrasonic current meter in the plume of the Rhone river are summarized as follows: 1. Currents of Rhone river water entering the lake were clearly discernible up to a distance of about 1 km from the river mouth. The interflow was observed at depth of 10 to 30 m. 2. Interflow velocities decreased with increasing distance from the river mouth: from 40cm/s at a distance of 350 m to about 15 cm/s at 1 km. 3. Short-term variations of current velocities and directions documented the highly turbulent nature of the interflow. 4. The entering river water (inflow direction to the NNW) interfered with a persisting northeastward current of the lake water. At a distance of 1–2 km from the mouth the interflow gradually assumed the same direction, possibly due to deflection by Coriolis forces. 5. Current velocities showed considerable variations within a time scale in the order of hours at the same measuring position. The reasons for these fluctuations remain unclear. Possible causes may be lateral oscillations of the entering river water or its deviation by river mouth bars during periods of reduced river discharge. Variations of the discharge alone cannot explain these current fluctuations.
  • Trübeströme in Seen: Sauerstoffeintrag durch grundnah eingeschichtetes Flusswasser
    Item type: Journal Article
    Lambert, André; Kelts, Kerry; Zimmermann, Ulrich (1984)
    Schweizerische Zeitschrift für Hydrologie
    Near-bottom current measurements in the main delta areas of the Walensee (Switzerland) and of Lake Constance yielded evidence that sporadic high influxes of clastic suspensions caused by flood stage discharges of tributaries generate turbidity underflows. Turbid suspensions plunge down the delta front as hyperpycnal inflows with speeds up to 130cm/s. These periodic intrusions of well oxygenated river water may influence the oxygen budget of the basal hypolimnion, thus possibly antagonizing eutrophication in marginal cases, supported by the adsorption of phosphate by suspended clay particles.
  • Behandlung von Grundwasser-Strömungsprobleme mit Hilfe von Modellversuchen
    Item type: Journal Article
    Zeller, Jürg (1957)
    Schweizerische Zeitschrift für Hydrologie
Publications 1 - 4 of 4