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  Sensitivity and Calibration of Three‐Dimensional SPH Formulations in Large‐Scale Landslide Modeling

Li, S., Tang, H., Peng, C., Turowski, J., Schöpa, A., An, H., Chen, X., Ouyang, C., Chen, J. (2023): Sensitivity and Calibration of Three‐Dimensional SPH Formulations in Large‐Scale Landslide Modeling. - Journal of Geophysical Research: Solid Earth, 128, 2, e2022JB024583.
https://doi.org/10.1029/2022JB024583

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Li, Shuai1, Autor              
Tang, Hui1, Autor              
Peng, Chong2, Autor
Turowski, J.3, Autor              
Schöpa, Anne3, Autor              
An, Huicong2, Autor
Chen, Xiaoqing2, Autor
Ouyang, Chaojun2, Autor
Chen, Jiangang2, Autor
Affiliations:
14.7 Earth Surface Process Modelling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_1729888              
2External Organizations, ou_persistent22              
34.6 Geomorphology, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146045              

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Schlagwörter: DEAL Wiley
 Zusammenfassung: Numerical prediction of landslide runout and deposition is important for estimating landslide risk and developing mitigation plans. The choice of a suitable model and its parameters and a confident calibration strategy are crucial for numerical simulations. Here, we evaluated two constitutive models with a three-dimensional smoothed particle hydrodynamics (SPH) method by simulating the catastrophic 11 October 2018 Baige landslide. The results indicate that both the soil mechanic and fluid models can capture the dynamic runout and deposition morphology while using different values of input parameters. A point-wise comparison of deposit elevation can minimize the calibration error. Numerical models were constrained accurately by utilizing both the static observation data and dynamic seismic signals. The effects of friction on deep-seated landslides motion and deposition are more significant than cohesion. The 3D model includes the effects of shear stresses and velocities inside the material body, resulting in a reduced friction coefficient compared to the 2D model (e.g., depth-averaged model). Our study highlights the potential of the 3D SPH method for modeling large-scale complex landslides.

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Sprache(n): eng - Englisch
 Datum: 2023-01-282023
 Publikationsstatus: Final veröffentlicht
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1029/2022JB024583
GFZPOF: p4 T3 Restless Earth
OATYPE: Hybrid - DEAL Wiley
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Titel: Journal of Geophysical Research: Solid Earth
Genre der Quelle: Zeitschrift, SCI, Scopus
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 128 (2) Artikelnummer: e2022JB024583 Start- / Endseite: - Identifikator: ISSN: 2169-9313
ISSN: 2169-9356
CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/jgr_solid_earth
Publisher: Wiley
Publisher: American Geophysical Union (AGU)