scholarly journals A STUDY ON GROUND DISPLACEMENT OF LIQUEFIED SOIL CAUSED BY QUAYWALL COLLAPSED

2010 ◽  
Vol 66 (2) ◽  
pp. 387-396
Author(s):  
Jiho JANG ◽  
Masanori HAMADA
Keyword(s):  
Ground Displacement

scholarly journals The Influence of Surface Topography on the Weak Ground Shaking in Kathmandu Valley during the 2015 Gorkha Earthquake, Nepal

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 678
Author(s):  
Mark van der Meijde ◽  
Md Ashrafuzzaman ◽  
Norman Kerle ◽  
Saad Khan ◽  
Harald van der Werff
Keyword(s):  
Numerical Simulations ◽  
Surface Topography ◽  
Seismic Energy ◽  
Spectral Element ◽  
Kathmandu Valley ◽  
Ground Displacement ◽  
Gorkha Earthquake ◽  
Ground Shaking ◽  
Earthquake Scenarios ◽  
2015 Gorkha Earthquake

It remains elusive why there was only weak and limited ground shaking in Kathmandu valley during the 25 April 2015 Mw 7.8 Gorkha, Nepal, earthquake. Our spectral element numerical simulations show that, during this earthquake, surface topography restricted the propagation of seismic energy into the valley. The mountains diverted the incoming seismic wave mostly to the eastern and western margins of the valley. As a result, we find de-amplification of peak ground displacement in most of the valley interior. Modeling of alternative earthquake scenarios of the same magnitude occurring at different locations shows that these will affect the Kathmandu valley much more strongly, up to 2–3 times more, than the 2015 Gorkha earthquake did. This indicates that surface topography contributed to the reduced seismic shaking for this specific earthquake and lessened the earthquake impact within the valley.

Ground Displacement Evaluation of the Ischia Island (Phlegraean Volcanic District, Italy) Applying Advanced Satellite SAR Interferometry Techniques

2021 ◽  
Author(s):  
Lisa Beccaro ◽  
Cristiano Tolomei ◽  
Claudia Spinetti ◽  
Marina Bisson ◽  
Laura Colini ◽  
...  
Keyword(s):  
Sar Interferometry ◽  
Ground Displacement ◽  
Ischia Island

scholarly journals LIQUEFACTION-INDUCED GROUND DISPLACEMENT AND ITS RELATED DAMAGE TO LIFELINE FACILITIES

1996 ◽  
Vol 36 (Special) ◽  
pp. 81-97 ◽  
Author(s):  
MASANORI HAMADA ◽  
RYOJI ISOYAMA ◽  
KAZUE WAKAMATSU
Keyword(s):  
Ground Displacement

scholarly journals STUDY ON APPLICABILITY OF GROUND DISPLACEMENT MEASUREMENTS BY RTK-GNSS TO SLOPE FACE OF EXPRESSWAYS

2020 ◽  
Vol 76 (1) ◽  
pp. 18-31
Author(s):  
Yu FUJIWARA ◽  
Seiya YOKOTA ◽  
Akira TAKEISHI ◽  
Koichiro IIJIMA ◽  
Masafumi EKAWA
Keyword(s):  
Ground Displacement ◽  
Displacement Measurements

scholarly journals Modelling ground displacement and gravity changes with the MUFITS simulator

2020 ◽  
Vol 54 ◽  
pp. 89-98
Author(s):  
Andrey Afanasyev ◽  
Ivan Utkin
Keyword(s):  
Scientific Community ◽  
Hydrothermal Activity ◽  
Campi Flegrei ◽  
Ground Displacement ◽  
Benchmark Study ◽  
Comprehensive Method ◽  
Gravity Changes ◽  
Subsurface Flows ◽  
Reservoir Simulator ◽  
First Time

Abstract. We present an extension of the MUFITS reservoir simulator for modelling the ground displacement and gravity changes associated with subsurface flows in geologic porous media. Two different methods are implemented for modelling the ground displacement. The first approach is simple and fast and is based on an analytical solution for the extension source in a semi-infinite elastic medium. Its application is limited to homogeneous reservoirs with a flat Earth surface. The second, more comprehensive method involves a one-way coupling of MUFITS with geomechanical code presented for the first time in this paper. We validate the accuracy of the development by considering a benchmark study of hydrothermal activity at Campi Flegrei (Italy). We investigate the limitations of the first approach by considering domains for the geomechanical problem that are larger than those for the fluid flow. Furthermore, we present the results of more complicated simulations in a heterogeneous subsurface when the assumptions of the first approach are violated. We supplement the study with the executable of the simulator for further use by the scientific community.

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