Visualization of Strong Ground Motion from the 2011 Off Tohoku, Japan (Mw=9.0) Earthquake Obtained from Dense Nation-Wide Seismic Network and Large-Scale Parallel FDM Simulation

2013 ◽  
pp. 9-16
Author(s):  
Takashi Furumura
Keyword(s):  
Ground Motion ◽  
Large Scale ◽  
Strong Ground Motion ◽  
Seismic Network ◽  
Strong Ground

Damage to Oil Tanks Caused by Severe Strong Ground Motion due to the 2018 Hokkaido, Japan Iburi-Tobu Earthquake (Mw6.6)

2020 ◽  
Author(s):  
Ken Hatayama ◽  
Haruki Nishi ◽  
Masahiko Hayashi ◽  
Koya Tokutake
Keyword(s):  
Ground Motion ◽  
Large Scale ◽  
Strong Ground Motion ◽  
Source Region ◽  
Large Earthquake ◽  
Storage Tanks ◽  
Oil Storage ◽  
Shell Plate ◽  
Oil Tanks ◽  
Strong Ground

Abstract Damage and influences to oil tanks caused by severe strong ground motion due to a large earthquake (Mw6.6) that occurred in the district of Iburi-tobu, Hokkaido, Japan on September 6, 2018 are reported in this paper. In the vicinity of the seismic source region, two large-scale crude-oil storage bases are located. The neighboring two bases had in total 86 large oil storage tanks with a capacity of 115,000 m3. The oil storage bases were hit by strong ground motion with peak ground accelerations of 590 to 1,570 cm/s2 and with peak ground velocities of 50 to 80 cm/s. Shell plates of a small bunker A tank with a capacity of 306 m3 suffered diamond buckling and elephant-foot buckling. No large oil storage tanks lost their function of oil storage despite of the severe strong ground motion. However, most of them splashed oil from the gap between the floating roof and the shell plate, and many of them had damage to their pontoons, gauge poles, guide poles, rolling ladders, liquid-level meters, and shoulders of foundation. One of the 115,000-m3-in-capacity tanks was equipped with a displacement gauge system to measure uplift of the bottom of the shell plate from the shoulder of tank foundation. The system recorded a maximum uplift of 4.4 cm. This is the world’s first record of uplift of a large tank caused by a natural earthquake.

scholarly journals Experimental investigation of strong ground motion due to thrust fault earthquakes

2014 ◽  
Vol 119 (2) ◽  
pp. 1316-1336 ◽  
Author(s):  
Vahe Gabuchian ◽  
Ares J. Rosakis ◽  
Nadia Lapusta ◽  
David D. Oglesby
Keyword(s):  
Experimental Investigation ◽  
Ground Motion ◽  
Strong Ground Motion ◽  
Thrust Fault ◽  
Strong Ground
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