Mixing dynamics at river confluences governed by intermodal behaviour

Introduction: river confluences, tributaries and the fluvial network

That river systems are networks consisting of links and nodes is one of their most obvious characteristics. Despite the ubiquity of confluences and tributary networks, the first century of modern fluvial geomorphology paid little consistent attention to river junctions and the interactions between tributaries and the main stem (Kennedy, 1984). Important exceptions include classic contributions ...

Editorial: Could Speciation Across Evolution be Governed by Genetic Switch Codes at Short Tandem Repeats?

Four Wave Mixing using Intermodal Nonlinearities PhD thesis

The nonlinear process of four-wave mixing (FWM) enables coupling of energy between wavelengths. This is useful for both optical amplification and wavelength conversion. A crucial prerequisite for the process is phase matching. This PhD project investigates how higher order modes (HOMs) in fibers can be used as an additional degree of freedom to fulfill this phase matching requirement. The desig...

Are Eyewall Replacement Cycles Governed Largely by Axisymmetric Balance Dynamics?

The authors question the widely held view that radial contraction of a secondary eyewall during an eyewall replacement cycle is well understood and governed largely by the classical theory of axisymmetric balance dynamics. The investigation is based on a comparison of the secondary circulation and derived tangential wind tendency between a full-physics simulation and the Sawyer–Eliassen balance...

Spin-current emission governed by nonlinear spin dynamics

Coupling between conduction electrons and localized magnetization is responsible for a variety of phenomena in spintronic devices. This coupling enables to generate spin currents from dynamical magnetization. Due to the nonlinearity of magnetization dynamics, the spin-current emission through the dynamical spin-exchange coupling offers a route for nonlinear generation of spin currents. Here, we...