Surface displacement based on InSAR analysis and seismic damage associated with the 2016 Kumamoto earthquake

2021 ◽  
Author(s):  
Yoshiya Oda ◽  
Nanako Yokota ◽  
Hiroyuki Azuma
Keyword(s):  
Surface Displacement ◽  
Seismic Damage ◽  
2016 Kumamoto Earthquake ◽  
Kumamoto Earthquake ◽  
The 2016 Kumamoto Earthquake ◽  
Displacement Based

SEISMIC DAMAGE PREDICTION FOR JAPANESE-STYLE WOODEN HOUSE IN THE 2016 KUMAMOTO EARTHQUAKE

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Tomiya Takatani ◽  
Hayato Nishikawa
Keyword(s):  
Process Analysis ◽  
Ground Surface ◽  
Seismic Damage ◽  
2016 Kumamoto Earthquake ◽  
Damage Prediction ◽  
Kumamoto Earthquake ◽  
Seismic Fault ◽  
Prediction Function ◽  
The 2016 Kumamoto Earthquake ◽  
Wooden House

Thousands of wooden houses were destroyed by the 2016 Kumamoto Earthquake. A seismic damage prediction function for wooden houses taking into consideration the consecutive strong earthquake motions, the amplification effect of ground surface layer, and the rupture propagation effect of seismic fault was proposed in this paper. Relationship between three ground characteristics above mentioned and the seismic damage for wooden house in the 2016 Kumamoto earthquake was analytically investigated by 3-D collapsing process analysis. The maximum drift angle was evaluated in this collapsing analysis of two-story wooden house.

scholarly journals Seismic damage analysis on the river levees reinforced with steel sheet pile by the 2016 Kumamoto earthquake

2020 ◽  
Vol 15 (2) ◽  
pp. 395-404
Author(s):  
Kiyonobu KASAMA ◽  
Shuhei YAMAMOTO ◽  
Makoto OHNO ◽  
Hirotoshi MORI ◽  
Shinichi TSUKAMOTO ◽  
...  
Keyword(s):  
Steel Sheet ◽  
Seismic Damage ◽  
Damage Analysis ◽  
Sheet Pile ◽  
2016 Kumamoto Earthquake ◽  
Kumamoto Earthquake ◽  
The 2016 Kumamoto Earthquake

scholarly journals Seasonal and transient surface displacements in the Kumamoto area, Japan, associated with the 2016 Kumamoto earthquake: implications for seismic-induced groundwater level change

2020 ◽  
Vol 72 (1) ◽  
Author(s):  
Kazuya Ishitsuka ◽  
Takeshi Tsuji ◽  
Weiren Lin ◽  
Makoto Kagabu ◽  
Jun Shimada
Keyword(s):  
Groundwater Level ◽  
Surface Displacement ◽  
Earthquake Sequence ◽  
2016 Kumamoto Earthquake ◽  
Persistent Scatterer Interferometry ◽  
Kumamoto Earthquake ◽  
Level Change ◽  
Surface Displacements ◽  
The 2016 Kumamoto Earthquake ◽  
Groundwater Level Change

Abstract The 2016 Kumamoto earthquake sequence on April 14 (Mw 6.2) and April 16 (Mw 7.0) altered the regional groundwater level. To better understand the relationship between groundwater level change and surface displacement, we estimated surface displacement in the Kumamoto area (Japan) using persistent scatterer interferometry from 19 ALOS/PALSAR images acquired between January 7, 2007 and March 5, 2011, 28 ALOS-2/PALSAR-2 images acquired between April 17, 2016 and December 10, 2018, and 113 Sentinel-1 images acquired between May 26, 2016 and December 30, 2018. Our estimation shows that transient surface displacement occurred following the 2016 Kumamoto earthquake sequence, together with seasonal surface displacement that was not detected from the 2007–2011 images. We suggest that a portion of the transient displacement occurred via groundwater drawdown through new ruptures that formed owing to the 2016 Kumamoto earthquake sequence and sediment compaction. Seasonal surface displacements detected after the 2016 Kumamoto earthquake sequence are linked to groundwater level variations.

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