3D numerical modelling of negative apparent conductivity anomalies in loop-loop electromagnetic measurements: a case study at a dacite intrusion in Sugisawa, Akita Prefecture, Japan

2017 ◽  
Vol 48 (3) ◽  
pp. 177-191 ◽  
Author(s):  
Ame Thato Selepeng ◽  
Shin’ya Sakanaka ◽  
Tadashi Nishitani
Keyword(s):  
Numerical Modelling ◽  
Apparent Conductivity ◽  
Electromagnetic Measurements ◽  
Conductivity Anomalies ◽  
3D Numerical Modelling ◽  
Akita Prefecture

Stability analyses of large waste dumps via 3D numerical modelling considering cracks and earthquake loading: a case study of Zhujiabaobao waste dump

2019 ◽  
Vol 53 (2) ◽  
pp. 252-265 ◽  
Author(s):  
Yiding Bao ◽  
Jianping Chen ◽  
Xiaohui Sun ◽  
Xudong Han ◽  
Shengyuan Song
Keyword(s):  
Numerical Modelling ◽  
Earthquake Loading ◽  
Waste Dump ◽  
Stability Analyses ◽  
Waste Dumps ◽  
3D Numerical Modelling

3D numerical modelling of graben interaction and linkage: a case study of the Canyonlands grabens, Utah

2013 ◽  
Vol 25 (4) ◽  
pp. 436-449 ◽  
Author(s):  
Vaneeda Allken ◽  
Ritske S. Huismans ◽  
Haakon Fossen ◽  
Cedric Thieulot
Keyword(s):  
Numerical Modelling ◽  
3D Numerical Modelling

3D numerical modelling for interpreting topographic effects in rocky hills for Seismic Microzonation: The case study of Arquata del Tronto hamlet

2020 ◽  
Vol 279 ◽  
pp. 105868
Author(s):  
Ilaria Primofiore ◽  
Julie Baron ◽  
Peter Klin ◽  
Giovanna Laurenzano ◽  
Cristina Muraro ◽  
...  
Keyword(s):  
Numerical Modelling ◽  
Seismic Microzonation ◽  
Topographic Effects ◽  
3D Numerical Modelling

3D numerical modelling of a pulsed pumping process of a large DNAPL pool: In situ pilot-scale case study of hexachlorobutadiene in a keyed enclosure

2018 ◽  
Vol 214 ◽  
pp. 24-38 ◽  
Author(s):  
Quentin Giraud ◽  
Julio Gonçalvès ◽  
Benoît Paris ◽  
Antoine Joubert ◽  
Stéfan Colombano ◽  
...  
Keyword(s):  
Numerical Modelling ◽  
Pilot Scale ◽  
3D Numerical Modelling ◽  
Pulsed Pumping

Advanced rockfall modelling for risk mitigation: tree impact and fragmentation

2021 ◽  
Author(s):  
Camilla Lanfranconi ◽  
Paolo Frattini ◽  
Giovanni Battista Crosta ◽  
Gianluca Sala ◽  
Davide Bertolo ◽  
...  
Keyword(s):  
Numerical Modelling ◽  
Case Studies ◽  
Risk Mitigation ◽  
Cost Effective ◽  
Protective Role ◽  
Main Body ◽  
Forest Density ◽  
3D Numerical Modelling

<p>Despite their centrality to rockfall risk management, two issues are frequently overlooked: the role of forests in rockfall dynamic and the fragmentation phenomenon. To investigate the importance of these issues we have developed advanced modelling case studies in two representative sites that have been recently affected by rockfall events in the Aosta Valley Region (Western Italian Alps). In the Saint Oyen case study, about 17,500 m3 of rock detached in March 2019 and reached a service road and the sport center in the lower part of the slope, passing through a mature fir forest. The presence of the forest has significantly influenced the rocks distribution along the slope, increasing the lateral dispersion of trajectories and reducing the mobility. For the design of defensive works, 3D rockfall models of three future potential risk scenarios were therefore performed by using the tree-impact algorithm of the code HY-STONE (Frattini et al., 2012). This algorithm provides the location of impacts on trees, the absorbed energy, and the deviation angle. The input parameters (i.e., the value of diameter at breast height and the forest density) were based on direct measurements of the fir forest. Compared with a traditional simulation without the protective role of forests, the results of 3D numerical modelling with tree-impact algorithm show a decrease in the number of blocks impacting the barriers (91%), no variations in the bouncing heights (for 95<sup>th</sup> percentile), and an increase in the kinetic energies due to a filter effect by the forest (85% for 95<sup>th</sup> percentile). In the Roisan case study, about 1,050 m3 of rock toppled in October 2019. While the main body of the rockfall stopped in a relatively flat area close to the failure, two blocks were exceptionally able to reach the foot of the slope causing the interruption of a municipal road. An attempt to back-calibrate this event with HY-STONE showed difficulties to describe the behaviour of these isolated blocks with respects to the main landslide body. A possible explanation for this behaviour is that the detached volume fragmented soon after impacting the slope, giving rise to flying fragments with higher mobility. To test this hypothesis we accounted for fragmentation through a specific algorithm of HY-STONE that fragments the falling blocks when their energy overcomes a certain threshold and simulate the behaviour of the resulting fragments. This approach allowed to accurately replicate the rockfall event. We therefore adopted this approach for defensive-works design, simulating all the unstable volumes overhanging the municipal road. Compared with a traditional simulation, the results of 3D numerical modelling with fragmentation algorithm show an increase in the number of blocks impacting the barriers (86%) and in the bouncing heights (96% for 95<sup>th</sup> percentile), with a decrease of the kinetic energy due to comminution (39% for 95<sup>th</sup> percentile). These two case studies demonstrate the importance of accounting for the forest or for fragmentation in the design of cost-effective defensive works.</p><p> </p><p>Frattini P, Crosta GB, Agliardi F (2012) Rockfall characterization and modeling. Landslides: types, mechanisms and modelling 22:267-281</p>

scholarly journals Numerical modelling for tsunami wave propagation (case study: Manado bays)

2019 ◽  
Vol 567 ◽  
pp. 012005
Author(s):  
G Pasau ◽  
G H Tamuntuan ◽  
A Tanauma
Keyword(s):  
Wave Propagation ◽  
Numerical Modelling ◽  
Tsunami Wave

3D numerical modelling of asynchronous propagation characteristics of flood and sediment peaks in three gorges reservoir

2021 ◽  
Vol 593 ◽  
pp. 125896
Author(s):  
Bangwen Zhang ◽  
Baosheng Wu ◽  
Ruoyin Zhang ◽  
Shi Ren ◽  
Minhui Li
Keyword(s):  
Numerical Modelling ◽  
Three Gorges Reservoir ◽  
Three Gorges ◽  
Propagation Characteristics ◽  
3D Numerical Modelling

scholarly journals HYDROCARBON GENERATION AND MIGRATION FROM BARREMIAN – APTIAN SOURCE ROCKS, NORTHERN ORANGE BASIN, OFFSHORE WESTERN SOUTH AFRICA: A 3D NUMERICAL MODELLING STUDY

2021 ◽  
Vol 44 (2) ◽  
pp. 187-208
Author(s):  
C. A. Samakinde ◽  
J. M. van Bever Donker ◽  
R. Durrheim ◽  
M. Manzi
Keyword(s):  
South Africa ◽  
Numerical Modelling ◽  
Source Rocks ◽  
Hydrocarbon Generation ◽  
3D Numerical Modelling ◽  
And Migration ◽  
Modelling Study
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