Abstract
This paper reports on the first part of the study: the thermal modelling of Lake Bourget. A one-dimensional, vertical model based on the advection-diffusion equation is used. This equation is solved using a finite difference, semi-implicit method. The resolution grid has 145 layers (1 meter high) and the time step is 3 hours. Results of the model agree with the observed seasonal and long-term evolutions of temperature in Lake Bourget. The main characteristics of the annual cycle are reproduced: set-up of the thermocline in spring, depth of the epilimnion, thermocline and metalimnion, value of the temperature gradient in the metalimnion, deepening of the thermocline in fall and winter overturn.
| Translated title of the contribution | Modelling the seasonal evolution of temperature in lake Bourget (France) |
|---|---|
| Original language | French |
| Pages (from-to) | 483-510 |
| Number of pages | 28 |
| Journal | Revue des Sciences de l'Eau |
| Volume | 2 |
| Issue number | 4 |
| Publication status | Published - 1 Dec 1989 |
| Event | Conference Internationale des Limnologues d'Expression Francaise CILEF - Aussois, Fr Duration: 24 May 1988 → 28 May 1988 |