Model help:HydroTrend

HydroTrend

Input Files and directories

Run Parameters

Temperature

Precipitation

Basin

River Mouth

Groudwater

Climate driven hydrological transport model

Model introduction

HydroTrend is an ANSI-standard C numerical model that creates synthetic river discharge and sediment load time series as a function of climate trends and basin morphology and has been used to study the sediment flux to a basin for basin filling models. As a drainage basin simulator, the model provides time series of daily discharge hydraulics at a river mouth, including the sediment load properties. HydroTrend was designed to provide input to lake or shelf circulation and sedimentation models (Steckler et al., 1996; Syvitski and Alcott, 1995b), and study the impact of land-sea fluxes given climatic change scenarios (Moore, 1992; Syvitski and Andrews, 1994). HydroTrend simulates the major processes that occur in a river basin, including:

• Glacierized areas with advances and retreats depending on the climate scenario,
• Snow accumulation in the winter and melt in the subsequent spring/summer,
• Rainfall over the remaining portions of the basin with canopy evaporation,
• Groundwater recharging and discharging,
• The impact of reservoirs.

Model input parameters

Input Files and directories
Input directory		[-]
Site prefix		[-]
Case prefix		[-]

Run Parameters
Run duration		[years]

Temperature
Starting mean annual temperature		[°C]
Change in mean annual temperature		[°C/year]
Standard deviation of mean annual temperature		[°C]

Precipitation
Starting mean annual precipitation		[m/year]
change in mean annual precipitation		[m/year/year]
Standard deviation of mean annual precipitation		[m/year]

Basin
Lithology factor		[-]
Anthropogenic facor		[-]
Lapse rate		[°C/km]
Starting ELA		[m]
Change in ELA		m/year]
Dry precipitation (nival and ice) evaporation fraction		[-]
River length		[km]
Mean volume of reservoir		[km3]
Drainage area of reservoir		[km2]

River Mouth
k	River mouth velocity coefficient	[m/s]
m	River mouth velocity exponent	[-]
a	River mouth width coefficient	[m]
b	River mouth width exponent	[-]
Average river mouth velocity		[m/s]
Constant annual base flow		[m3/s]
Trapping efficiency		[-]
Delta gradient		[m/m]

Groudwater
Maximum groundwater storage		[m3]
Minimum groundwater storage		[m3]
Initial groundwater storage		m[3]
Groundwater coefficient		[m3]
Groundwater exponent		[-]
Saturated hydraulic conductivity		[mm/day]

Model output parameters

Output Values
Output directory		[-]
Interval between output files		[-]
Mean Velocity file		[-]
Mean Width file		[-]
Mean Depth file		[-]
Mean Water Discharge file		[-]
Mean Sediment Discharge file		[-]
Mean Bedload Flux file		[-]

Uses ports

This will be something that the CSDMS facility will add

Provides ports

This will be something that the CSDMS facility will add

Main equations

Qs

= BQART

= Long term (30yrs or longer) suspended sediment load [kg/s]

(1)

Nomenclature

Qs	= Long-term suspended sediment load (30yrs or longer)	[kg/s]
B	=	[-]
Q	= Long-term water discharge	[m3/s]
A	= Drainage basin area	[km2]
R	= Drainage basin relief	[km]
T	= Drainage basin temporal and spatial mean temperature	[°C]

This is the header cell, which is always shown
This cell is not shown by default.

Notes

Any notes, comments, you want to share with the user

Numerical scheme

Examples

An example run with input parameters, BLD files, as well as a figure / movie of the output

Follow the next steps to include images / movies of simulations:

• Upload file: http://csdms.colorado.edu/wiki/Special:Upload
• Create link to the file on your page: [[Image:<file name>]].

See also: Help:Images or Help:Movies

Developer(s)

Albert Kettner

References

• Kettner, A.J., and Syvitski, J.P.M., 2008. HydroTrend version 3.0: a Climate-Driven Hydrological Transport Model that Simulates Discharge and Sediment Load leaving a River System. Computers & Geosciences, 34(10), 1170-1183, doi:10.1016/j.cageo.2008.02.008.
• Syvitski, J.P.M., Morehead, M.D. and Nicholson, M., 1998. HYDROTREND: A Climate-driven Hydrologic-Transport Model for Predicting Discharge and Sediment Loads to Lakes or Oceans. Computers & Geosciences, 24(1), 51-68, doi:10.1016/S0098-3004(97)00083-6.
• Syvitski, J.P.M., and J.M. Alcott, 1995. RIVER3: Simulation of River Discharge and Sediment Transport. Computers and Geosciences, 21(1), 89-101, doi:10.1016/0098-3004(94)00062-Y.

Links

Model:HydroTrend