In studies on geophysical fluid dynamics, it is common practice to take the Coriolis force only
partially into account by neglecting the components proportional to the cosine of latitude, …

A number of physical mechanisms give rise to confined linear wave systems whose spatial
structure is governed by a hyperbolic equation. These lack the discrete set of regular …

When a container of water is vibrated, its response can be described in terms of large-scale
standing waves—the eigenmodes of the system. The belief that enclosed continuous media …

The spatial structure of the streamfunction field of free, linear internal waves in a two-dimensional
basin is governed by the canonical, second-order, hyperbolic equation on a closed …

We demonstrate a novel mechanism for prey detection in birds. Red knots (Calidris canutus),
sandpipers that occur worldwide in coastal intertidal areas, are able to detect their favourite …

Tidal and inertial current ellipses, measured at several locations and depths in the central
North Sea during a number of monthly periods in 1980, 1981 and 1982, are decomposed into …

Rotating fluids support waves. These inertial waves propagate obliquely through the fluid,
with an angle that is fixed with respect to the rotation axis. Upon reflection, their wavelength is …

Internal tides in the Bay of Biscay are studied using a numerical linear hydrostatic internal-tide
generation model, in which along-slope uniformity is assumed. The focus is on the …

A simplified, one-parameter version of the Lorenz model is obtained in the limit of high
Rayleigh-and Prandtl-numbers, physically corresponding to diffusionless convection. It is argued …

In most birds, flight is the most important means of escape from predators. Impaired flight
abilities due to increased wing loading may increase vulnerability to predation. To compensate …