Modeling phosphorus in the environment - Chapter 16 pps
Modeling phosphorus in the environment - Chapter 16 pps
... 390 Modeling Phosphorus in the Environment
financial investment. Another potential disadvantage of automated samplers is their
utilization of a single intake point, which is discussed in detail in ... sampling settings (storm sampling thresh-
old, sampling interval, discrete/composite sampling) directly affects the uncertainty
of storm water quality data. These settings determi...
Modeling phosphorus in the environment - Chapter 2 ppsx
... LLC
44 Modeling Phosphorus in the Environment
field (drainage) boundary to the outlet of the field. This length and difference in
elevation from the most remote point to the outlet are the same ... rain falling during
the time of concentration, R
tc
, was proportional to the amount of rain falling during
the 24-h period, or where
α
tc
is the fraction of daily rai...
Modeling phosphorus in the environment - Chapter 10 ppsx
... net gain
of sediments.
sed_loss
Value
-8 35 - -7 50
-7 50 - -6 00
-6 00 - -4 50
-4 50 - -3 00
-3 00 - -1 50
-1 50 - 0
0 -1 50
150 - 300
300 - 450
© 2007 by Taylor & Francis Group, LLC
241
10
ANSWERS-2000: ... represents the storage volume at the end of the time increment. The value
of Po
j+1
is then replaced into Equation...
Modeling phosphorus in the environment - Chapter 12 pps
... and then declines linearly to S
avg
and S
min
as P
5-day
increases,
as given in Figure 12.1. The relationship of S to P
5-day
is different for the dormant
vs. the growing season. Breakpoint ... where in ltration excess is the dominant
runoff-generating mechanism. In humid, well-vegetated areas with shallow soils, such
as in the northeastern U.S., in ltration excess does...
Modeling phosphorus in the environment - Chapter 1 pptx
... working on a modeling approach to BMP evaluation (see
Chapter 15 on BMPs in this book; Gitau et al. 2001). An initial step in modeling
BMP-induced reduction in P loss is the characterization of the ... overlying waters. In the short term, however, river flow and
physical properties of the sediments will in uence the amount of sediment P
leaving the watershed in th...
Modeling phosphorus in the environment - Chapter 4 potx
... on the size and spacing of
the drains (van der Ploeg et al. 1999). Models described in the following chapters
simulate tile drain flow in a variety of ways, including the Richards equation linked
with ... routines depicting P leaching in
the soil profile.
Recent interest in determining P leaching losses may lead to alternative methods
for modeling P leaching. Simplified forms...
Modeling phosphorus in the environment - Chapter 5 potx
... Novak et al. 2003). Phosphorus
124 Modeling Phosphorus in the Environment
The concept of sediment EPC
0
might provide a useful mechanism to simulate
in- stream processes in these watershed models. ... watershed, FD-36, detailed in Figure 5.1.
The sediments were placed in the fluvarium to a 3-cm depth, and water was recir-
culated over the sediment at a rate represen...
Modeling phosphorus in the environment - Chapter 6 pot
... rejecting a model because
of errors in the data. Thus, in the case of the grazing inputs and the imbalance in
the hydrological fluxes, it is argued that the rejection criteria should be relaxed as the
model ... assess-
ing the inputs at the measurement scale, together with interpolation errors in space
and time to provide the values required at the lumped or distr...
Modeling phosphorus in the environment - Chapter 7 docx
... Background 164
7.2 Phosphorus Modeling in SWAT: Soil Phosphorus Interactions 167
7.2.1 Initialization of Soil Phosphorus Levels 168
7.2.2 Mineralization, Decomposition, and Immobilization 170
7.2.3 Inorganic ... Taylor & Francis Group, LLC
172 Modeling Phosphorus in the Environment
the solution (labile) and active mineral pools is estimated using the followin...
Modeling phosphorus in the environment - Chapter 8 pdf
... 194 Modeling Phosphorus in the Environment
0.1; D: 0.01 to 0.05); default is 0 .16 in. hr
−1
; suggests that Z *INFILT* INTFN
should approximate the long-term in ltration rate, or permeability, in ... was delineated into
FIGURE 8.4 Upper Etowah River basin with the solid dot indicating the watershed outlet at
Canton, Georgia. The gray lines indicate the stream network...
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