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@ARTICLE{Herbst:47325,
      author       = {Herbst, M. and Hardelauf, H. and Harms, R. and
                      Vanderborght, J. and Vereecken, H.},
      title        = {{P}esticide fate at regional scale: {D}evelopment of an
                      integrated model approach and application},
      journal      = {Physics and chemistry of the earth},
      volume       = {30},
      issn         = {0079-1946},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-47325},
      year         = {2005},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {As a result of agricultural practice many soils and
                      aquifers are contaminated with pesticides. In order to
                      quantify the side-effects of these anthropogenic impacts on
                      groundwater quality at regional scale, a process-based,
                      integrated model approach was developed. The Richards'
                      equation based numerical model TRACE calculates the
                      three-dimensional saturated/unsaturated water flow. For the
                      modeling of regional scale pesticide transport we linked
                      TRACE with the plant module SUCROS and with 3DLEWASTE, a
                      hybrid Lagrangian/Eulerian approach to solve the
                      convection/dispersion equation. We used measurements,
                      standard methods like pedotransfer-functions or parameters
                      from literature to derive the model input for the process
                      model. A first-step application of TRACE/3DLEWASTE to the 20
                      km(2) test area 'Zwischenscholle' for the period 1983-1993
                      reveals the behaviour of the pesticide isoproturon. The
                      selected test area is characterised by an intense
                      agricultural use and shallow groundwater, resulting in a
                      high vulnerability of the groundwater to pesticide
                      contamination. The model results stress the importance of
                      the unsaturated zone for the occurrence of pesticides in
                      groundwater. Remarkable isoproturon concentrations in
                      groundwater are predicted for locations with thin layered
                      and permeable soils. For four selected locations we used
                      measured piezometric heads to validate predicted groundwater
                      levels. In general, the model results are consistent and
                      reasonable. Thus the developed integrated model approach is
                      seen as a promising tool for the quantification of the
                      agricultural practice impact on groundwater quality. (c)
                      2005 Elsevier Ltd. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-IV},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB50},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Geosciences, Multidisciplinary / Meteorology $\&$
                      Atmospheric Sciences / Water Resources},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000232842200008},
      doi          = {10.1016/j.pce.2005.07.009},
      url          = {https://juser.fz-juelich.de/record/47325},
}