TY - JOUR
T1 - Volcanic mountain area disaster caused by the Iwate-Miyagi Nairiku Earthquake of 2008, Japan
AU - Kazama, Motoki
AU - Kataoka, Shunichi
AU - Uzuoka, Ryosuke
N1 - Funding Information:
The authors offer their sincere thanks to the Japanese Geotechnical Society and the Japan Society of Civil Engineers, who supported the field investigation. The Tohoku Regional Bureau of Ministry of Land and Infrastructure and Transport (MLIT), the Tohoku Branch of the Ministry of Agriculture, Forestry and Fisheries (MAFF), the Miyagi Prefectural Government, the Iwate Prefectural Government, the Akita Prefectural Government and the Tohoku Construction Association (TCA) also provided valuable support for the site investigation. The Miyagi Prefectural Government provided a plane and a sectional topographic map of the Aratosawa landslide site and the strong motion records of the dam sites. Mr. Shingo Sato of Fukken Gijutsu Consultant Co. Ltd. provided valuable data on the debris flow route. Dr. Hiroyuki Goto of the Disaster Prevention Research Institute (DPRI) of Kyoto University provided us with strong motion spectra. Professor Mitsuyoshi Akiyama of Waseda University provided us with information on bridge damage. Mr. Yusuke Nakajima and Mr. Genki Seo, undergraduate students in the Geotechnical Laboratory of Tohoku University, arranged all the strong motion records. The KiK-net records, used in the study, were observed by the National Research Institute for Earth Science and Disaster Prevention. The Tohoku Construction Association (TCA) and Emaki Corporation provided us with the aerial photographs of the damaged area after the earthquake. The Tohoku Regional Bureau, MLIT, provided the laser profiling data and the water level monitoring data at Yunokura. The in situ tests and the soil sampling were supported by MLIT, Hazama Corporation and Oyo Corporation. Mr. Takafumi Uchino of Oyo Corporation provided a valuable interpretation on the boring data. Mr. Tomohiro Ichiyama, a graduate student in the Geotechnical Laboratory of Tohoku University, performed laboratory tests and a topography analysis. A part of the landslide dam is financially supported by JSPS, Japan Society for the Promotion of Science, KAKENHI (No. 21360220) and Tohoku Construction Association. The authors wish to express their deep appreciation to these people and organizations for their great assistance.
PY - 2012/2
Y1 - 2012/2
N2 - We conducted an investigation of the geotechnical damage caused by an earthquake that struck on June 14, 2008. The earthquake was of magnitude 7.2 and hit a volcanic mountain area in Northern Japan. During the earthquake, the largest strong motion ever, over 4G, was recorded at the ground surface in the source region. As a result of the earthquake, a landslide of 1.5 million m 3 was generated near the top of the mountain and became a mud flow, traveling about 10 km downstream. The geomorphic characteristics of the mud flow are reported in this paper. Another huge landslide was generated upstream near the Aratosawa Dam. It was about 1 km in length, about 700 m in width and had a sliding mass volume of about 67 million m3, which slipped about 320 m. The geological features, the time series of the slide and the cause of the slide are also discussed. In addition, more than 50 landslide dams, formed due to the collapsed soil and rock, appeared after the earthquake. In this paper, the geotechnical properties of all the damage are introduced.
AB - We conducted an investigation of the geotechnical damage caused by an earthquake that struck on June 14, 2008. The earthquake was of magnitude 7.2 and hit a volcanic mountain area in Northern Japan. During the earthquake, the largest strong motion ever, over 4G, was recorded at the ground surface in the source region. As a result of the earthquake, a landslide of 1.5 million m 3 was generated near the top of the mountain and became a mud flow, traveling about 10 km downstream. The geomorphic characteristics of the mud flow are reported in this paper. Another huge landslide was generated upstream near the Aratosawa Dam. It was about 1 km in length, about 700 m in width and had a sliding mass volume of about 67 million m3, which slipped about 320 m. The geological features, the time series of the slide and the cause of the slide are also discussed. In addition, more than 50 landslide dams, formed due to the collapsed soil and rock, appeared after the earthquake. In this paper, the geotechnical properties of all the damage are introduced.
KW - Debris flow
KW - Earthquake disaster
KW - Landslide
KW - Landslide dam
KW - Strong motion
KW - The 2008 Iwate-Miyagi Nairiku Earthquake
KW - Volcanic area
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U2 - 10.1016/j.sandf.2012.01.003
DO - 10.1016/j.sandf.2012.01.003
M3 - Article
AN - SCOPUS:84871315626
SN - 0038-0806
VL - 52
SP - 168
EP - 184
JO - Soils and Foundations
JF - Soils and Foundations
IS - 1
ER -