An optimized baseflow separation method for assessment of seasonal and spatial variability of baseflow and the driving factors

2021 ◽  
Vol 31 (12) ◽  
pp. 1873-1894
Author(s):  
Jiaqi Sun ◽  
Xiaojun Wang ◽  
Shamsuddin Shahid ◽  
Hongyan Li
Keyword(s):  
Spatial Variability ◽  
Driving Factors ◽  
Separation Method ◽  
Baseflow Separation

scholarly journals New baseflow separation and recession analysis approaches for streamflow

2014 ◽  
Vol 11 (6) ◽  
pp. 7089-7131 ◽  
Author(s):  
M. K. Stewart
Keyword(s):  
Driving Force ◽  
Water Storage ◽  
Separation Method ◽  
Rainfall Runoff ◽  
Runoff Generation ◽  
Linear Quadratic ◽  
Baseflow Separation ◽  
Recession Analysis ◽  
Different Origins ◽  
The Relationship

Abstract. Understanding and modelling the relationship between rainfall and runoff has been a driving force in hydrology for many years. Baseflow separation and recession analysis have been two of the main tools for understanding runoff generation in catchments, but there are many different methods for each and no consensus on how best to apply them. A new baseflow separation method is presented, which is justified by being based generally on the more objective tracer separation methods and by being optimised by fitting to the recession hydrograph. Using this baseflow separation method, the thesis is advanced that recession analysis should be applied to the separated components (quickflow and baseflow), because of their very different origins and characteristics, rather than to the streamflow itself because analysing the latter alone gives misleading results. Applying baseflow separation before recession analysis sheds new light on water storage in catchments and may resolve some current problems with recession analysis. It may also have implications for rainfall–runoff modelling. Among other things it shows that both quickflow and baseflow reservoirs have non-linear (quadratic) characteristics in the studied catchment (Glendhu, New Zealand).

Filtered smoothed minima baseflow separation method

2009 ◽  
Vol 372 (1-4) ◽  
pp. 94-101 ◽  
Author(s):  
Hafzullah Aksoy ◽  
Ilker Kurt ◽  
Ebru Eris
Keyword(s):  
Separation Method ◽  
Baseflow Separation

Phase separation in sol gel-derived ceramic films of silica-zirconia, alumina-zirconia, and titania-zirconia system

1994 ◽  
Vol 52 ◽  
pp. 646-647
Author(s):  
J. Tong ◽  
L. Eyring
Keyword(s):  
Fracture Toughness ◽  
Phase Separation ◽  
Sol Gel ◽  
Great Influence ◽  
High Strength ◽  
Chemical Durability ◽  
Separation Method ◽  
Toughening Mechanism ◽  
Ceramic Films ◽  
Zirconia Toughened Alumina

There is increasing interest in composites containing zirconia because of their high strength, fracture toughness, and its great influence on the chemical durability in glass. For the zirconia-silica system, monolithic glasses, fibers and coatings have been obtained. There is currently a great interest in designing zirconia-toughened alumina including exploration of the processing methods and the toughening mechanism.The possibility of forming nanocrystal composites by a phase separation method has been investigated in three systems: zirconia-alumina, zirconia-silica and zirconia-titania using HREM. The morphological observations initially suggest that the formation of nanocrystal composites by a phase separation method is possible in the zirconia-alumina and zirconia-silica systems, but impossible in the zirconia-titania system. The separation-produced grain size in silica-zirconia system is around 5 nm and is more uniform than that in the alumina-zirconia system in which the sizes of the small polyhedron grains are around 10 nm. In the titania-zirconia system, there is no obvious separation as was observed in die alumina-zirconia and silica-zirconia system.

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