IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.4
Uncertainty Assessment of Soil Erosion Model Using Particle Filtering
Yeonsu KIM; Giha LEE; Hyunuk AN; Jae E YANG
Corresponding AuthorGiha LEE
Source PublicationJournal of Mountain Science
AbstractRecent advances in computer with geographic information system (GIS) technologies have allowed modelers to develop physics-based models for modeling soil erosion processes in time and space. However, it has been widely recognized that the effect of uncertainties on model predictions may be more significant when modelers apply such models for their own modeling purposes. Sources of uncertainty involved in modeling include data, model structural, and parameter uncertainty. To deal with the uncertain parameters of a catchment-scale soil erosion model (CSEM) and assess simulation uncertainties in soil erosion, particle filtering modeling (PF) is introduced in the CSEM. The proposed method, CSEM-PF, estimates parameters of non-linear and non-Gaussian systems, such as a physics-based soil erosion model by assimilating observation data such as discharge and sediment discharge sequences at outlets. PF provides time-varying feasible parameter sets as well as uncertainty bounds of outputs while traditional automatic calibration techniques result in a time-invariant global optimal parameter set. CSEM-PF was applied to a small mountainous catchment of the Yongdam dam in Korea for soil erosion modeling and uncertainty assessment for three historical typhoon events. Finally, the most optimal parameter sets and uncertainty bounds of simulation of both discharge and sediment discharge at each time step of the study events are provided.
KeywordData Assimilation Particle Filter Soil Erosion Modeling Parameter Estimation Time Variant Parameter Mountainous Catchment
Indexed BySCI
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Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.4
Corresponding AuthorGiha LEE
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GB/T 7714
Yeonsu KIM,Giha LEE,Hyunuk AN,et al. Uncertainty Assessment of Soil Erosion Model Using Particle Filtering[J]. Journal of Mountain Science,2015,12(4):828-840.
APA Yeonsu KIM,Giha LEE,Hyunuk AN,&Jae E YANG.(2015).Uncertainty Assessment of Soil Erosion Model Using Particle Filtering.Journal of Mountain Science,12(4),828-840.
MLA Yeonsu KIM,et al."Uncertainty Assessment of Soil Erosion Model Using Particle Filtering".Journal of Mountain Science 12.4(2015):828-840.
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