Caribou response to human activity: research and management

This paper describes the need by researchers and managers of caribou (Rangifer tarandus) to carefully assess the impact of their study methods on animals and results.An error made during a study of barren-ground caribou is described.Assumptions Baby Activity Toy made during preparation of study methods need to be tested during collection of data.St

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Multipoint investigation of the source region of storm-time chorus

In this case study we investigate the source region of whistler-mode chorus located close to the geomagnetic equator at a radial distance of 4.4 Earth radii.We use measurements from the four Cluster spacecraft at separations of less than a few hundreds of km, recorded during the geomagnetic storm of 18 April 2002.The waveforms of the electric field

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