scholarly journals Studies on the Influence of Water-Percolation in Rice Plants during Ripening Period in Ill-Drained Paddy-Field.

1960 ◽  
Vol 29 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Masae HAYASHI ◽  
Atushi HASHIZUME ◽  
Seijiro SHINOZUKA ◽  
Gyozo IGARASHI
Keyword(s):  
Paddy Field ◽  
Ripening Period ◽  
Rice Plants ◽  
Water Percolation ◽  
Influence Of Water

Effect of topsoil removal and selective countermeasures on radiocesium accumulation in rice plants in Fukushima paddy field

2017 ◽  
Vol 603-604 ◽  
pp. 49-56 ◽  
Author(s):  
Baolu Yang ◽  
Yuichi Onda ◽  
Yoshihiro Ohmori ◽  
Hitoshi Sekimoto ◽  
Toru Fujiwara ◽  
...  
Keyword(s):  
Paddy Field ◽  
Rice Plants ◽  
Topsoil Removal

scholarly journals The influence of water percolation through crevasses on the thermal regime of a Himalayan mountain glacier

2020 ◽  
Vol 14 (4) ◽  
pp. 1273-1288 ◽  
Author(s):  
Adrien Gilbert ◽  
Anna Sinisalo ◽  
Tika R. Gurung ◽  
Koji Fujita ◽  
Sudan B. Maharjan ◽  
...  
Keyword(s):  
Thermal Regime ◽  
Simple Method ◽  
Mountain Glacier ◽  
Basal Ice ◽  
Water Percolation ◽  
Influence Of Water ◽  
Mechanical Models ◽  
Himalayan Mountain ◽  
Ground Penetrating ◽  
Transient Thermal

Abstract. In cold and arid climates, small glaciers with cold accumulation zones are often thought to be entirely cold based. However, scattering in ground-penetrating radar (GPR) measurements on the Rikha Samba Glacier in the Nepal Himalayas suggests a large amount of temperate ice that seems to be influenced by the presence of crevassed areas. We used a coupled thermo-mechanical model forced by a firn model accounting for firn heating to interpret the observed thermal regime. Using a simple energy conservation approach, we show that the addition of water percolation and refreezing in crevassed areas explains these observations. Model experiments show that both steady and transient thermal regimes are significantly affected by latent heat release in crevassed areas. This makes half of the glacier base temperate, resulting in an ice dynamic mainly controlled by basal friction instead of ice deformation. The timescale of thermal regime change, in response to atmospheric warming, is also greatly diminished, with a potential switch from cold to temperate basal ice in 50–60 years in the upper part of the glacier instead of the 100–150 years that it would take without the effect of the crevasses. This study highlights the crucial role of water percolation through the crevasses on the thermal regime of glaciers and validates a simple method to account for it in glacier thermo-mechanical models.

Sign in / Sign up

Export Citation Format

Share Document