Now showing items 1-10 of 110
Shallow-water vortex equilibria and their stability
(2011-01-01) - Journal article,
We first describe the equilibrium form and stability of steadily-rotating simply-connected vortex patches in the single-layer quasi-geostrophic model of geophysical fluid dynamics. This model, valid for rotating shallow-water ...
Simply-connected vortex-patch shallow-water quasi-equilibria
(2014-03-05) - Journal article,
We examine the form, properties, stability and evolution of simply-connected vortex-patch relative quasi-equilibria in the single-layer ƒ-plane shallow-water model of geophysical fluid dynamics. We examine the effects of ...
50-Year Anniversary of Papers by Cormack, Jolly and Seber
(2016-05) - Journal item,
Capture-recapture abundance estimation using a semi-complete data likelihood approach
(2016-03) - Journal article,
Capture-recapture data are often collected when abundance estimation is of interest. In the presence of unobserved individual heterogeneity, specified on a continuous scale for the capture probabilities, the likelihood is ...
Existence, stability and formation of baroclinic triples in quasi-geostrophic flows
(2015-12) - Journal article,
Hetons are baroclinic vortices able to transport tracers or species, and which have been observed at sea. This paper studies the offset collision of two identical hetons, often resulting in the formation of a baroclinic ...
The interaction between two oppositely travelling, horizontally offset, antisymmetric quasi-geostrophic hetons
(2016-05) - Journal article,
We investigate numerically the nonlinear interactions between hetons. Hetons are baroclinic structures consisting of two vortices of opposite sign lying at different depths. Hetons are long-lived. They most often translate ...
Bayesian P-splines and advanced computing in R for a changepoint analysis on spatio-temporal point processes
(2016) - Journal article,
This work presents advanced computational aspects of a new method for changepoint detection on spatio-temporal point process data. We summarize the methodology, based on building a Bayesian hierarchical model for the data ...
A conversation with Richard M. Cormack
(2016-05) - Journal article,
Richard Melville Cormack is one of the giants who developed the theory of mark-recapture. Referring to his key paper in 1964, and the papers published back-to-back in 1965 by George Jolly and George Seber, the `Cormack-Jolly-Seber ...
Statistical ecology comes of age
(2014-12-24) - Journal article,
The desire to predict the consequences of global environmental change has been the driver towards more realistic models embracing the variability and uncertainties inherent in ecology. Statistical ecology has gelled over ...
On the stability of continuously stratified quasi-geostrophic hetons
(2015-04-30) - Journal article,
In this paper we examine the stability of quasi-geostrophic hetons in a stably, continuously stratified fluid. To this purpose we first determinate numerically equilibrium states. Equilibrium hetons consist of two vortices ...