basins, Hydrological model, Transport model,
C
biophysical parameters (temperature, precipitation, evapo-transpiration, and glacier characteristics).
Same info is also available by 6 ASCII output files.]]
Long and short term sediment discharge is solved by an empirical relation.
More details about the long term sediment routine that is incorporated in the Hydrotrend:
Daily discharge is the smallest output timestep
Short term sediment routine:
This part will be filled out by CSDMS staff
Avulsion,
When applying HydroTrend, please make a reference to: 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.
<pbars ytitle=Downloads Title='Monthly Downloads hydrotrend' xlabels=true size=900x200 ymax=40 grid=true box=true cubic=true plots=open xformat=number connected=true angle=90 legend> ,Total downloads: 509 2008 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,0 Jul,0 Aug,0 Sep,0 Oct,0 Nov,0 Dec,0 2009 - Jan,0 Feb,0 Mar,0 Apr,0 May,5 Jun,6 Jul,0 Aug,0 Sep,1 Oct,3 Nov,0 Dec,7 2010 - Jan,12 Feb,9 Mar,3 Apr,4 May,10 Jun,14 Jul,9 Aug,4 Sep,16 Oct,17 Nov,8 Dec,18 2011 - Jan,16 Feb,5 Mar,8 Apr,2 May,12 Jun,3 Jul,9 Aug,5 Sep,4 Oct,2 Nov,1 Dec,1 2012 - Jan,4 Feb,4 Mar,5 Apr,3 May,2 Jun,4 Jul,9 Aug,6 Sep,3 Oct,4 Nov,10 Dec,2 2013 - Jan,2 Feb,11 Mar,3 Apr,7 May,8 Jun,2 Jul,3 Aug,5 Sep,2 Oct,4 Nov,20 Dec,32 2014 - Jan,24 Feb,30 Mar,14 Apr,3 May,7 Jun,12 Jul,5 Aug,2 Sep,13 Oct,9 Nov,5 Dec,3 2015 - Jan,4 Feb,9 Mar,0 Apr,0 May,0 Jun,0 Jul,0 </pbars>
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
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:
HydroTrend, an ANSI-standard C coded program has been developed over many years by a number of researchers. The program started out with the name "RIVER" and was coded in FORTRAN. Over the years, it's capabilities have been built upon and greatly expanded up to RIVER version 5.11. The model development of RIVER and HydroTrend has been under the direction of by James Syvitski. Here is a small overview of all the primairy authors:
User community: <properties> Albert Kettner:=kettner@colorado.edu (since January 2002) Irina Overeem:=Irina.Overeem@colorado.edu (since January 2003) Kerry McCarney:=kmccarney@geol.sc.edu (since June, 2006) Camilo Medina:=camilomedi@gmail.com (since October, 2007) Ted Lewis:=limno.ted@gmail.com (since December, 2007) Ilja de Winter:=i.l.dewinter@tudelft.nl (since March, 2008) Phaedra Upton:=P.Upton@gns.cri.nz (since February, 2009) Silke Carmen Lutzmann:=slutzman@uni-bonn.de (since March, 2010) </properties>
Error reports: This would be the place to leave any comments. Please provide your name and add a date to the comment. I'll try to answer your questions as soon as possible but feel free as HydroTrend user to provide any comments as well.
There are 2 input files required to run the model: HYDRO.IN and HYDRO0.HYPS. You can use an optional input file (HYDRO.CLIMATE) to specify daily precipitation and temperature events if you do not want to use the climate generator build in to HydroTrend. Each file has it's own format which are discussed below together with an explanation of each of the input parameters.
Explanation table for HYDRO.IN input file. Download this example HYDRO.IN file In case you want to set up a HydroTrend run for your specific river drainage basin.
Tchange: The trend or change per year in the annual temperatures for this epoch (°C/annum). Must lie in the range between +1 or -1°C.Tstd.: The standard deviation about the trend line that the annual temperatures will have. Must lie in the range between -5 and 5.
Where: v=k*Qm, w=a*Qb, d=c*Qf and the discharge: Q=w*v*d.Therefore: a*c*k = 1 and b+m+f = 1.
See also [4] [5]
See also [5]
References
Saturated hydraulic conductivity rates shown in the table below are in relation to texture and are only a general guide. Differences in bulk density may alter the rates shown below. Table 2: General values for Saturated hydraulic conductivity
The HYDRO0.HYPS file is an ASCII file that provides the model with a hypsometry curve, describing the area - relief relation of the studied river basin. HydroTrend determines the freezing and the snow line based on this information. Under conditions of changing sea level the basin hypsometry curve might be altered as well. In that case you want to run multiple epochs that each have a different hypsometry file. Therefore a number is added in the file name. For example if the simulation contains 2 epochs you need 2 hypsometry files named HYDRO0.HYPS and HYDRO1.HYPS.
This is the format of the file in case you want to create a HYDRO0.HYPS from scratch:
------------------------------------------------- Hypsometry input file for HYDROTREND First line: number of hypsometric bins Other lines: altitude (m) and area in (km^2) data ------------------------------------------------- 3 1 208.9168081 51 375.2451287 101 536.0996727
were the first 5 lines are the header followed by the number of hypsometric bins (in this case 3), followed by 3 lines containing altitude and the cumulative area at that elevation, starting close to sea level (between 0 - 50m). The elevation increases should go in steps not larger than 50m, and each elevation step should be increasing with the same elevation. Also, the cumulative area always has to increase!
The separation of elevation and cumulative area could be several spaces or just a tab. Notice that the starting elevation as well as the basin area at that point should be always positive. So for sea level change studies that affect the drainage basin, make sure that the sea level is your base level (so always start the hypsometric bins with 0 - 50 m of elevation and than the highest point of the basin will change.
You can download the following HYDRO0.HYPS example file and alter it for your river drainage basin. Hypsometric curves can be created with any GIS software. However, RiverTools is very straight forward to use for this.
The HYDRO.CLIMATE file is an optional ASCII file that can be used to simulate fluvial water discharge and sediment load for a specific climate event. The file needs to contain climate data (temperature and precipitation) for at least 1 year (the shortest simulation time for HydroTrend). Climate statistics from the HYDRO.IN file will be used when there is no HYDRO.CLIMATE file in the input directory.
This is the format of the file in case you want to create a HYDRO.CLIMATE from scratch:
-------------------------------------------------------------------- Climate input file for Hydrotrend. DO NOT REMOVE THOSE LINES First line: the number of rows of input values and dt [hours] Rest lines: Total precipitation (mm) and average temperature in degrees C. Values are per timestep. -------------------------------------------------------------------- 10950 24 0 -23.92 0 -23.92 0 -23.92 ... etc ...
were the first 6 lines are the header followed by the number of climate records (in this case 10950, only 3 lines are showed) and the time interval specified in hours (so in this example we deal with daily average temperature and daily total precipitation), followed by lines of precipitation (in mm) and temperature (in degrees Celsius). Precipitation and temperature data can be separated either with a tab or by 1 or more spaces.
You can download an example HYDRO.CLIMATE file an modify it for your river drainage basin. CSDMS might have some good climate source suggestions in case you are searching for climate data for your river basin.
General ASCII output files A summary table of information is output to HYDRO.LOG. Mean annual and total annual values of many model parameters (discharge, load, basin temperature, precipitation, etc.) are written to a set of annual trend files (HYDRO.TRN1, HYDRO.TRN2, and HYDRO.TRN3). These annual trend files are useful for verifying climate ranges and trends and to check total discharge and sediment load. HYDRO.STAT is representing the used water and sediment equations and their statistics per epoch.
Optional ASCII output files It's possible, to write all the output data to ASCII files. This option can be turned 'ON' or 'OFF' in the HYDRO.IN file. Notice that ASCII files are larger than binary output. When the ASCII option is turned 'ON' the following files will be created:
There are 2 binary output files, named HYDRO.DIS and HYDRO.CONVDIS. Both files contain the same data, which is a minimum of 6 columns all seporated by space. From one to 6 or more: it contains velocity, width, depth, Qb, Cs[i](number of columns is equal to the number of grainsizes specified in the input file) and Total Cs. All values are defined as floats. Matlab can handle the format. The binary file are platform dependant. A swapped version of the output file is created for other platforms: HYDRO.CONVDIS file (this is the swabbed version of HYDRO.DIS).
Matlab tools to visualize The binary file is created in such a way that it is easy to analyse with matlab. 3 matlab macro files are created to analyse the file. Follow the steps to use the matlab macro files.
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