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Abstract: Geophysical columnar vortices such as tornadoes, waterspouts and dust devils are frequently observed to have one or more cylindrical sheaths of dust concentric with the axis of symmetry. The mechanisms by which such sheaths ...

Abstract: The occurrence of subsidiary vortices (multiple vortices) in intense tornadoes is hypothesized as being due to the development of an inertial instability in a two-celled vortex. The instability is taken to develop within ...

Abstract: In the period 1680?1988, 107 significant tornadoes in the Fujita scale categories F2?F5 have occurred in France. These include 49 such events in the historical period 1680?1959, and 58 events in the modem period 1960?1988. ...

Abstract: On 7 May 1995, during VORTEX 95, the Tornado Debris Project at the University of Oklahoma collected debris transported up to 190 km (120 mi) in association with an isolated tornadic thunderstorm which moved over north Texas ...

Abstract: The results of a series of measurements of centerline pressure deficit in tornado-like vortices are described. These measurements were undertaken for the purpose of determining 1) how the magnitude of the central pressure ...

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Abstract: A laser Doppler velocimeter was used to collect datasets consisting of means and turbulence intensities of radial and tangential velocity components for two vortex morphologies within a Ward-type tornado vortex chamber. ...

Abstract: This article addresses measurement of atmospheric surface pressure using economical instruments. It is intended to provide members of the Society with a ready reference to respond to inquiries from earth and physical science ...