Abstract: In the quest for ever finer levels of technology integration, mechanical linkages reach their precision limits at about 5 micrometers per meter of workspace. Beyond this physical limit, all six ...

Abstract: Two very simple model equations, suggested by the form of the standard baroclinic instability dispersion relation. are studied to investigate the nature of the instability of zonally inhomogeneous flows. In particular, the ...

Abstract: Tests of a balance model based on potential vorticity inversion are performed for shallow water flow over mountains. Idealized flows are assumed with Rossby numbers in the range 0.1?0.4. Flow evolutions with forecast times ...

Abstract: A linear, single-layer model is used to describe the complex system of recirculations that may be expected when a long ridge system is pierced by several gaps. The recirculations are fed by jets issuing from the western ...

Abstract: The problem of the reflection of unstable baroclinic waves from straight boundaries inclined with respect to latitude circles is studied. The basic flow in which the incident unstable wave is embedded is a flow with only ...

Abstract: The prognostic equations for the total angular momentum vector M are derived for f- and ?-plane geometries and compared to those of spherical models. It is shown that the omission of the centrifugal effects and the ...

Abstract: A linear, two-layer model for abyssal flow driven by a specified upwelling into the thermocline is studied when the ocean basin is partially blocked by a meridional barrier in the lower layer. The barrier is meant to ...

Abstract: A soil when sheared ultimately reaches a steady-state condition at which it deforms at a constant shear stress, effective normal stress, and void ratio. Various systems in nature dynamically evolve similarly from some ...

Abstract: The stability, with respect to quasi-geostrophic disturbances, of flows containing both horizontal and vertical shear is studied, as a continuation of a previous paper. Bounds are placed on the phase speed of neutral waves ...

Abstract: The stability with respect to quasi-geostrophic disturbances of atmospheric and oceanic currents containing both horizontal and vertical shear is investigated for both a continuously stratified and a twolayer model. Certain ...