(a freeware software for scientific community)
The History of EUROSEM
The European Soil Erosion
Model
(EUROSEM) has been a joint effort of many European
scientists (this
is INCOMPLETE
list alphabetical order ):
J. Albaladejo Montoro, V. Andreu, K. Auerswald, P. Bazzoffi, W. Blum, Boiffin, H.R. Bork, P. J. Botterweg, V. Castillo, J.A. Catt, G. Chisci, B. Diekkrüger, W. Everaert, A. Folly, S. Giakoumakis, G. Govers, B. Hasholt, A.J. Johnston, E. Klaghofer, Y. Le Bissonnais, G. Monnier, R.P.C. Morgan, J. Nachtergaele, T. Panini, J.W.A. Poesen, J.N. Quinton, R.J. Rickson, J.L. Rubio, V. Sardo, , R.E. Smith, P. Strauss, M.E. Styczen, D. Torri, G. Tsakiris, R. Webster, M. Vauclin,. ..
and many others …
in the following image thre is a sketch of EUROSEM software evolution...
J. Albaladejo Montoro, V. Andreu, K. Auerswald, P. Bazzoffi, W. Blum, Boiffin, H.R. Bork, P. J. Botterweg, V. Castillo, J.A. Catt, G. Chisci, B. Diekkrüger, W. Everaert, A. Folly, S. Giakoumakis, G. Govers, B. Hasholt, A.J. Johnston, E. Klaghofer, Y. Le Bissonnais, G. Monnier, R.P.C. Morgan, J. Nachtergaele, T. Panini, J.W.A. Poesen, J.N. Quinton, R.J. Rickson, J.L. Rubio, V. Sardo, , R.E. Smith, P. Strauss, M.E. Styczen, D. Torri, G. Tsakiris, R. Webster, M. Vauclin,. ..
and many others …
in the following image thre is a sketch of EUROSEM software evolution...
some phases of EUROSEM developement are relevants:
A) Eurosem 1998 – 2001 during MWISED project
EUROSEM code specific efforts ( Quinton , Morgan , Kotova )
Recoding EUROSEM 3.3 procedural language (Fortran 77) in Object Oriented language (Object Pascal - Borland) developing a Windows graphical interface
MWISED project findings and result (not all implemented in eurosem):
1)Width discharge relationship to start linear erosion in absence of pre-formed rills and gullies (from Nachtergaele et al., 2002)
2)Ephemeral gully threshold
3)New infiltration routine (with dynamic changes of final infiltration rate linked to sealing processes)
Items 1) and 2) were implemented into EuroSEM4WIN but without success. Item 3) was implemented but in its static form
B) EUROSEM changes, new integrations and first recoding in 2004-2007 (RECONDES project):
Search for bugs into EuroSEM4WIN
Elimination of the ephemeral gully routine (still unfinished and poorly integrated into the code)
Simplification of input data handling and its substitution with and EXCEL input data file.
Development of input data integration and of a series of algorithms for building self-consistent scenario analysis.
Inclusion of root effects as an increase of cohesion into the input data file (De Baedts at al. 2008)
Adoption of Darcy-Weissbach equation instead of Manning’s and adoption, with marginal modification, of WEPP algorithms to calculate friction factor
Development of a model to transform the parameters of a multi-layered vegetation system into the equivalent (from the point of view of erosion and hydraulics) mono-layer system
C) EUROSEM full re-engineering 2007-2010
The main task completed:
Mainly code re-organization with restructuring and translation into a freepascal code , Object Pascal (using freepascal compiler project FPC - OPEN SOURCE)
Elimination of further bugs and improvement of the infiltration routine
Possible Integration of disaggregation algorithm for low resolution recorded rainfalls
EUROSEM-2010 : CODE STRUCTURE AND DEVELOPMENT TOOLS
The code related to USER INTERFACE is completely separated from the parts that contains the data structure and the libraries with the numerical code.
This structure facilitate the maintenance of the code, the modification, debugging an profilingand also the distribution freeware of the produced software
In this phase we choosed to use only open source programming and development tools, and in particular :
COMPILER Freepascal compiler FPC 2.4.2 (http://www.freepascal.org)
DEVELOPEMENT ENVIRONMENT Lazarus 0.9.29 IDE (http://www.lazarus.freepascal.org)
DEBUGGING and PROFILING Insight 6.3.5 + GDB 6.7 + GPROF (www.mingw.org)
last update 11/01/2011