Spatial Variation of Moisture Content in Shallow Aeolian Sandy Soil in the Southern Marginal Zone of the Gurbantonggut Desert

2010 ◽  
Vol 26 (4) ◽  
pp. 519-525 ◽  
Author(s):  
Chao JIANG ◽  
Yi-bing QIAN ◽  
Hai-feng YANG ◽  
Hai-sheng HOU
Keyword(s):  
Moisture Content ◽  
Spatial Variation ◽  
Sandy Soil ◽  
Marginal Zone ◽  
Southern Marginal Zone

Effects of distribution of bulk density and moisture content on shrub fires

2013 ◽  
Vol 22 (5) ◽  
pp. 625 ◽  
Author(s):  
Ambarish Dahale ◽  
Selina Ferguson ◽  
Babak Shotorban ◽  
Shankar Mahalingam
Keyword(s):  
Moisture Content ◽  
Spatial Variation ◽  
Bulk Density ◽  
Solid Fuel ◽  
Numerical Solutions ◽  
Propagation Speed ◽  
Fire Spread ◽  
Fuel Moisture ◽  
Combustion Heat ◽  
Fuel Moisture Content

Formulation of a physics-based model, capable of predicting fire spread through a single elevated crown-like shrub, is described in detail. Predictions from the model, obtained by numerical solutions to governing equations of fluid dynamics, combustion, heat transfer and thermal degradation of solid fuel, are found to be in fairly good agreement with experimental results. In this study we utilise the physics-based model to explore the importance of two parameters – the spatial variation of solid fuel bulk density and the solid fuel moisture content – on the burning of an isolated shrub in quiescent atmosphere. The results suggest that vertical fire spread rate within an isolated shrub and the time to initiate ignition within the crown are two global parameters significantly affected when the spatial variation of the bulk density or the variation of fuel moisture content is taken into account. The amount of fuel burnt is another parameter affected by varying fuel moisture content, especially in the cases of fire propagating through solid fuel with moisture content exceeding 40%. The specific mechanisms responsible for the reduction in propagation speed in the presence of higher bulk densities and moisture content are identified.

Geochronology of the Hout River Shear Zone and the metamorphism in the Southern Marginal Zone of the Limpopo Belt, Southern Africa

2001 ◽  
Vol 109 (1-2) ◽  
pp. 145-173 ◽  
Author(s):  
K Kreissig ◽  
L Holzer ◽  
R Frei ◽  
I.M Villa ◽  
J.D Kramers ◽  
...  
Keyword(s):  
Shear Zone ◽  
Southern Africa ◽  
Marginal Zone ◽  
Southern Marginal Zone ◽  
Limpopo Belt

Role of fluids in the exhumation of the Southern Marginal Zone of the Limpopo Complex, South Africa

2014 ◽  
Vol 253 ◽  
pp. 81-95 ◽  
Author(s):  
Christof A. Smit ◽  
Dirk D. van Reenen ◽  
Chris Roering
Keyword(s):  
South Africa ◽  
Marginal Zone ◽  
Southern Marginal Zone

scholarly journals Ultrahigh-temperature metamorphism of the Southern Marginal Zone of the Archean Limpopo Belt, South Africa

2004 ◽  
Vol 99 (4) ◽  
pp. 213-224 ◽  
Author(s):  
Toshiaki TSUNOGAE ◽  
Takashi MIYANO ◽  
Dirk D. van REENEN ◽  
C. André SMIT
Keyword(s):  
South Africa ◽  
Marginal Zone ◽  
Ultrahigh Temperature ◽  
Southern Marginal Zone ◽  
Limpopo Belt
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