Search: onr:"swepub:oai:DiVA.org:liu-78949" >
Formulae for Pressu...
Formulae for Pressure Gradients in One-Dimensional Lake Models
-
- Svensson, Urban (author)
- Computer-Aided Fluid Engineering, Norrköping, Sweden
-
- Sahlberg, Jörgen (author)
- Swedish Meteorological and Hydrological Institute, Norrköping
-
(creator_code:org_t)
- 1989
- 1989
- English.
-
In: Journal of Geophysical Research. - 0148-0227 .- 2156-2202. ; 94:C4, s. 4939-4946
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Formulae for barotropic and baroclinic pressure gradients, suitable for one-dimensional lake models, are derived and explored. The derivation is based on the equation for free standing oscillations and a continuity relation. The formulae, which are easy to derive and use, give the correct external and internal seiche frequencies for nonrotating, rectangular one- or two-layered basins of constant depth. When applied to situations with continuous stratification, further assumptions need to be introduced. These are discussed in the paper. Applications to a laboratory experiment, dealing with wind-induced entrainment, show that pressure gradients for the entrainment process are significant and that the pressure formulae derived capture this effect. The formulae are also used in combination with a one-dimensional lake model. Comparisons with field measurements of the seasonal stratification show that the inclusion of pressure gradients improves the predictive capabilities of the lake model.
Subject headings
- SAMHÄLLSVETENSKAP -- Annan samhällsvetenskap -- Tvärvetenskapliga studier inom samhällsvetenskap (hsv//swe)
- SOCIAL SCIENCES -- Other Social Sciences -- Social Sciences Interdisciplinary (hsv//eng)
Keyword
- INTERDISCIPLINARY RESEARCH AREAS
- TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database