Parallels between the dynamic response of flexible bridges under the action of wind and under the forces induced by crowds allow each field to inform the other. Wind-induced behaviour has been traditionally classified into categories such as flutter, galloping, vortex-induced vibration and buffeting. However, computational advances such as the vortex particle method have led to a more general p...

[1] Understanding the origin and perpetuation of the monsoon cycle has eluded scientists for decades. Using a suite of unprecedented satellite measurements, we show that the antecedents of the active/break monsoon emerge in the western equatorial Indian Ocean (EIO). The initiation of a new rainy phase in the western EIO is preceded by in situ surface wind convergence and central EIO warming, bo...

The power spectrum of magnetic fluctuations in the solar wind at 1 AU displays a break between two power laws in the range of spacecraft-frame frequencies 0.1 to 1 Hz. These frequencies correspond to spatial scales in the plasma frame near the proton gyroradius ρi and proton inertial length di. At 1 AU it is difficult to determine which of these is associated with the break, since [Formula: see...

Prompt emission of gamma-ray bursts (GRBs) is likely generated at early stages of the ejecta expansion, possibly by internal shocks. The γ-ray front overtakes the ejecta and sweeps the ambient medium. As a result a gap is opened between the ejecta and the medium that surfs the front ahead. Effectively, the ejecta move in a cavity until they reach a radius Rgap ≈ 3 × 1015E 53 cm where E is the i...

Bipolar expansion at various stages of evolution has been recently observed in a number of AGB stars. The expansion is driven by bipolar jets that emerge late in the evolution of AGB winds. The wind traps the jets, resulting in an expanding, elongated cocoon. Eventually the jets break-out from the confining spherical wind, as recently observed in W43A. This source displays the most advanced evo...

Context. G292.0+1.8 is a Cas A-like supernova remnant that contains the young pulsar PSR J1124-5916 powering a compact toruslike pulsar wind nebula visible in X-rays. A likely counterpart to the nebula has been detected in the optical VRI bands. Aims. To confirm the counterpart candidate nature, we examined archival mid-infrared data obtained with the Spitzer Space Telescope. Methods. Broad-ban...

Seasonal break-up of landfast sea ice consists of movement and irreversible ice detachment in response to winds or oceanic forces in the late stages of ice decay. The break-up process of landfast sea ice in the Chukchi Sea at Barrow, Alaska was analyzed for the years 2000 through 2010, based on local observations of snow and ice conditions, weather records, image sequences obtained from cameras...

A modified version of an operational 3dimensional, non-hydrostatic, limited-area atmospheric model (MM5) was used to perform high-resolution, idealized simulations of the interaction of an infinitely long single ridge with a steady, lateral large-scale wind field. The effect of different mountain ridge dimensions, wind speeds and patterns and moisture profiles on the quantity and distribution o...