Tritonia diomedea (synonymous with Tritonia tetraquetra) navigates in turbulent odour plumes, crawling upstream towards prey and downstream to avoid predators. This is probably accomplished by odour-gated rheotaxis, but other possibilities have not been excluded. Our goal was to test whether T. diomedea uses odour-gated rheotaxis and to simultaneously determine which of the cephalic sensory org...

[1] During the dry season, anthropogenic fires in tropical forests and peatlands of equatorial Asia produce regionally expansive smoke clouds that have important effects on atmospheric radiation and air quality. Here we estimated the height of smoke on Borneo and Sumatra and characterized its sensitivity to El Niño and regional drought. We used Multiangle Imaging Spectroradiometer (MISR) satell...

Particles in volcanic plumes forecasting [Rose et al., 1983]. The volcanogenic include vapor condensates and reaction products element fluxes provide a baseline for air of ash with vapors or condensed liquids, in pollution [e.g., Varekamp and Buseck, 1986]. addition to abundant silicate particles. In the In volcanic plumes, tiny particles form as a 1980 M•unt St. Helens plume we detected abunda...

Application of the multifractal microcanonical formalism to the detection of fire plumes in NOAA–AVHRR data H. Yahia , A. Turiel , N. Chrysoulakis , J. Grazzini , P. Prastacos & I. Herlin To cite this article: H. Yahia , A. Turiel , N. Chrysoulakis , J. Grazzini , P. Prastacos & I. Herlin (2008) Application of the multifractal microcanonical formalism to the detection of fire plumes in NOAA–AVH...

Abstract Plastic pollution is globally recognised as a threat to marine ecosystems, habitats, and wildlife, it has now reached remote locations such the Arctic Ocean. Nevertheless, distribution of microplastics in Eurasian particularly underreported. Here we present analyses 60 subsurface pump water samples 48 surface neuston net from with goal quantify classify relation oceanographic condition...

Experiments on the onset of buoyant instabilities leading to periodic formation of vortical structures in planar buoyant plumes of helium and helium/air mixtures injected into quiescent air are reported for a range of nozzle widths (w520– 70 mm), plume fluid densities ~pure helium to that approaching air!, and velocities at the nozzle exit. First, the plume parameters corresponding to the onset...

Statistical analysis of the global hotspot distribution is made and current state-of-the-art of the theory of mantle plumes is discussed. Both the fractal dimension analysis and the spherical harmonic correlation are performed to infer some constraints on possible hotspots and mantle plumes sources. Such a joint analysis suggests a compound model, in which the upper mantle exerts strong influen...