An error frequently made in the evaluation of advective transport in two dimensional Lagrangian models of advection-diffusion in coral reef waters
Spagnol, S.; Wolanski, E.; Deleersnijder, E.; Brinkman, R.; McAllister, F.; Cushman-Roisin, B.; Hanert, E. (2002). An error frequently made in the evaluation of advective transport in two dimensional Lagrangian models of advection-diffusion in coral reef waters. Mar. Ecol. Prog. Ser. 235: 299-302. dx.doi.org/10.3354/meps235299
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer
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| Trefwoorden |
Errors
Measurement > Flow measurement > Current measurement > Lagrangian current measurement
Models
Particle distribution
Reefs > Biogenic deposits > Coral reefs
Transport processes
Transport processes > Advection
Transport processes > Diffusion
Marien/Kust |
| Author keywords |
particle tracking; Lagrangian algorithms; advection-diffusion equation |
| Auteurs | | Top |
- Spagnol, S.
- Wolanski, E., meer
- Deleersnijder, E., meer
- Brinkman, R.
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- McAllister, F.
- Cushman-Roisin, B.
- Hanert, E., meer
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| Abstract |
The flushing time of reef lagoons estimated over recent years by 2-dimensional Lagrangian algorithms may have been significantly overestimated. This is due to a numerical artefact, leading to spurious accumulation of particles in regions where the water depth or the diffusivity is smallest. The nature of this numerical problem has remained largely unknown in the coral reef modelling community, although it was described, along with an efficient remedy, in several studies which are about a decade old. The numerical problem under consideration and its consequences on the modelled transport of coral eggs at Bowden Reef, Great Barrier Reef, are briefly assessed in the present article. |
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