scholarly journals Editorial for Special Issue “Multiscale Turbulent Transport”

Fluids ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 185
Author(s):  
Marco Martins Afonso ◽  
Sílvio M. A. Gama
Keyword(s):  
Numerical Simulations ◽  
Turbulent Transport ◽  
Special Issue ◽  
Temporal Scales ◽  
Spatio Temporal

Turbulent transport is currently a great subject of ongoing investigation at the interface of methodologies running from theory to numerical simulations and experiments, and covering several spatio-temporal scales [...]

ACM TIST Special Issue on Deep Learning for Spatio-Temporal Data: Part 1

2021 ◽  
Vol 12 (6) ◽  
pp. 1-3
Author(s):  
Senzhang Wang ◽  
Junbo Zhang ◽  
Yanjie Fu ◽  
Yong Li
Keyword(s):  
Deep Learning ◽  
Temporal Data ◽  
Special Issue ◽  
Spatio Temporal

scholarly journals PSI-based methodology to land subsidence mechanism recognition

2015 ◽  
Vol 372 ◽  
pp. 357-360 ◽  
Author(s):  
R. Bonì ◽  
C. Meisina ◽  
C. Perotti ◽  
F. Fenaroli
Keyword(s):  
Land Subsidence ◽  
Vadose Zone ◽  
Northern Italy ◽  
Clay Soils ◽  
Soil Consolidation ◽  
Persistent Scatterer Interferometry ◽  
Temporal Scales ◽  
Po Plain ◽  
Persistent Scatterer ◽  
Spatio Temporal

Abstract. A methodology based on Persistent Scatterer Interferometry (PSI) is proposed in order to disentangle the contribution of different processes that act at different spatio-temporal scales in land subsidence (i.e. vadose zone processes as swelling/shrinkage of clay soils, soil consolidation and fluid extraction). The methodology was applied in different Italian geological contexts characterized by natural and anthropic processes (i.e. a Prealpine valley and the Po Plain in northern Italy).

scholarly journals Foraging theory upscaled: the behavioural ecology of herbivore movement

2010 ◽  
Vol 365 (1550) ◽  
pp. 2267-2278 ◽  
Author(s):  
N. Owen-Smith ◽  
J. M. Fryxell ◽  
E. H. Merrill
Keyword(s):  
Seasonal Cycle ◽  
Large Scale ◽  
Diel Activity ◽  
Patch Selection ◽  
Temporal Scales ◽  
Spatial And Temporal Scales ◽  
Gps Collars ◽  
Activity Schedule ◽  
Spatio Temporal ◽  
Time And Energy

We outline how principles of optimal foraging developed for diet and food patch selection might be applied to movement behaviour expressed over larger spatial and temporal scales. Our focus is on large mammalian herbivores, capable of carrying global positioning system (GPS) collars operating through the seasonal cycle and dependent on vegetation resources that are fixed in space but seasonally variable in availability and nutritional value. The concept of intermittent movement leads to the recognition of distinct movement modes over a hierarchy of spatio-temporal scales. Over larger scales, periods with relatively low displacement may indicate settlement within foraging areas, habitat units or seasonal ranges. Directed movements connect these patches or places used for other activities. Selection is expressed by switches in movement mode and the intensity of utilization by the settlement period relative to the area covered. The type of benefit obtained during settlement periods may be inferred from movement patterns, local environmental features, or the diel activity schedule. Rates of movement indicate changing costs in time and energy over the seasonal cycle, between years and among regions. GPS telemetry potentially enables large-scale movement responses to changing environmental conditions to be linked to population performance.

scholarly journals Magnetic holes in plasmas close to the mirror instability

2007 ◽  
Vol 14 (4) ◽  
pp. 373-383 ◽  
Author(s):  
D. Borgogno ◽  
T. Passot ◽  
P. L. Sulem
Keyword(s):  
Numerical Simulations ◽  
Fluid Model ◽  
Instability Threshold ◽  
Landau Damping ◽  
Larmor Radius ◽  
Maxwell System ◽  
Unstable Regime ◽  
Finite Larmor Radius ◽  
Spatio Temporal ◽  
Hall Mhd

Abstract. Non-propagating magnetic hole solutions in anisotropic plasmas near the mirror instability threshold are investigated in numerical simulations of a fluid model that incorporates linear Landau damping and finite Larmor radius corrections calculated in the gyrokinetic approximation. This FLR-Landau fluid model reproduces the subcritical mirror bifurcation recently identified on the Vlasov-Maxwell system, both by theory and numerics. Stable magnetic hole solutions that display a polarization different from that of Hall-MHD solitons are indeed obtained slighlty below threshold, while magnetic patterns and spatio-temporal chaos emerge when the system is maintained in a mirror unstable regime.

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