stream frequency

stream frequency

[′strēm ‚frē·kwən·sē]
(geology)
A measure of topographic texture expressed as the ratio of the number of streams in a drainage basin to the area of the basin. Also known as channel frequency.
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However, stream frequency characterized by steeper surface, impermeable subsurface material, high surface runoff, sparse vegetation and high relief setting.
Important areal, linear and relief parameters were computed such as perimeter, basin area, basin length, drainage density (Dd), stream frequency (Fs), elongation ratios (Re), bifurcation ratio (Rb), circulatory ratio (Rc) etc.
Stream frequency (Fs) is the total number of streams in drainage basin per unit area [24].
The infiltration number of the basin is a product of drainage density and stream frequency. It describes the infiltration properties of the drainage basin.
3a), which shows, for example, near Newfoundland, a dipole indicating a flatter tropopause and consequently reduced jet stream frequency. The southward shift of low-tropospheric baroclinicity is consistent with a southward shift of the main cyclone activity in both the North Pacific and North Atlantic and enhanced cyclone activity in the Mediterranean (Fig.
of streams of all orders P=Perimeter (km) D=Lu/A Where, D=Drainage Density Drainage Density(D) Lu=Total stream langth of all orders A=Area of the Basin([km.sup.2]) Fs=Mu/A Where, Fs= Stream Frequency Stream Frequency(Fs) Mu= Total on.
These units can be expressed regarding the slope of the area, runoff characteristics, drainage density, stream frequency and relief ratio of the area (Babar, 2005).
It is also observed that there is a decrease in stream frequency as the stream order increases.
Parameters Formula River River 1 Area ([km.sup.2]) A 911.7 331.94 2 Perimeter (km) P 181.6 133.67 3 Drainage density D = [L.sub.u]/A 1.259 1.49 (km/[km.sup.2]) 4 Stream frequency [F.sub.s] = 0.904 1.144 [N.sub.u]/A 5 Texture ratio T = N/P 3.375 2.117 6 Basin length (km) [L.sub.b] 80.43 48.25 7 Elongation ratio Re=2 [square 0.423 0.426 root of ((A/ [product]) Lb)] 8 Circularity ratio Rc=4 [product] 0.347 0.233 A/[P.sup.2] 9 Form factor ratio Rf = A/[Lb.sup.2] 0.14 0.142 10 Drainage Texture (T)/ T = Dd X Fs.
Parameter Formula Reference Drainage Density (Dd) Dd = [summation]L/A L Horton, 1932 = Length of the rivers; A = Area Stream Frequency (Df) Df = [summation]N/A N Horton, 1932 = Number of river segments A Drainage Texture (Dt) Dt = N[mu]/P N[mu] = Total Horton, 1945 number of stream in all segments; P = Basin perimeter
Elevated topographical conditions in the west initiated numerous small stream segments and it encourages greater concentration of stream frequency, drainage density and drainage texture.
Moreover, areal morphometric aspects like drainage density (D), stream frequency (Fs), texture ratio (T), elongation ratio (Re), circularity ra tio (Rc), form factor ratio (Rf) were worked out keeping in view the parameters outlined by Horton [5], and Pareta [24].