Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Liquefaction as an important source of the A.D. 2011 Tohoku-Oki tsunami deposits at Sendai Plain, Japan

Kazuhisa Goto, Daisuke Sugawara, Tomoya Abe, Tsuyoshi Haraguchi and Shigehiro Fujino
Liquefaction as an important source of the A.D. 2011 Tohoku-Oki tsunami deposits at Sendai Plain, Japan
Geology (Boulder) (August 2012) 40 (10): 887-890

Abstract

This paper describes the topographic change and the recovery process, as well as the sediment sources, for tsunami deposits based on field surveys and analysis of digital elevation model data before and after the A.D. 2011 Tohoku-oki tsunami at the Sendai Plain, Japan. We found that the amount of sediment deposited on land was approximately four times greater than the eroded volume of sediment at the beach. Large amounts of the sediments deposited at the studied transect probably originated from liquefaction. This result suggests that the vented sediments might have been an important source of the tsunami deposits if liquefaction is generated by the strong ground motion of a near-field earthquake. In contrast, minor erosion was observed at the beach, and the beach berm was rebuilt within three months after the tsunami. Moreover, the erosional channel that had cut into the beach had been filled by sand within 13 days after the tsunami. Therefore, it is not expected that a sedimentary record of the tsunami will be preserved in the nearshore zone along the Sendai coast, although remnants of small scours on land might remain long after the tsunami.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 40
Serial Issue: 10
Title: Liquefaction as an important source of the A.D. 2011 Tohoku-Oki tsunami deposits at Sendai Plain, Japan
Affiliation: Chiba Institute of Technology, Planetary Exploration Research Center, Chiba, Japan
Pages: 887-890
Published: 20120809
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 13
Accession Number: 2012-082360
Categories: Environmental geologySedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: With GSA Data Repository Item 2012252; accessed on August 21, 2012
Illustration Description: illus. incl. sketch map
Source Medium: WWW
N38°00'00" - N38°30'00", E140°30'00" - E141°00'00"
Secondary Affiliation: Tohoku University, JPN, JapanNagoya University, JPN, JapanOsaka City University, JPN, JapanUniversity of Tsukuba, JPN, Japan
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201243
Close Modal

or Create an Account

Close Modal
Close Modal