Abstract
A moderate earthquake (Mw 6.4) caused a submarine mass movement in Suruga Bay, Japan on 11th August, 2009. The earthquake was also accompanied by a tsunami, which was observed at various observatories around Suruga Bay. A micro-bathymetric map was obtained from an autonomous underwater vehicle (AUV) survey of Urashima in the area where the submarine mass movement occurred. The Urashima cruised close to the seafloor and collected very high resolution bathymetric data as a raster graphic image with pixels arranged in a 1 m by 1 m square grid. The 3D seafloor image obtained clearly shows an escarpment (450 m wide and 10–15 m deep) approximately 5 km off the coast. Bedforms which were considered to have been formed due to earthquake-induced turbidity currents, spread wide in the survey area. The bedforms appear at about 20–30 m interval, and are lower than 1 m in height. A numerical simulation of the tsunami assuming that the fault motion and submarine mass movement occurred simultaneously provided a better match with the tsunami observation records at Yaizu tidal station and other stations than a simulation based on fault motion alone.
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References
Abe I, Goto K, Imamura F, Shimizu K (2008) Numerical simulation of the tsunami generated by the 2007 Noto Hanto earthquake and implications for unusual tidal surges observed in Toyama Bay. Earth Planet Space 60:133–138
Aoi S, Enescu B, Suzuki W, Asano Y, Obara K, Kunugi T, Shiomi K (2010) Stress transfer in the Tokai subduction zone from the 2009 Suruga Bay earthquake in Japan. Nat Geosci. doi:10.1038/NGEO885
Aoki T, Tsukioka S, Yoshida H, Hyakudome T, Ishibashi S, Sawa T, Ishikawa A, Tahara J, Yamamoto I, Ohkusu M (2008) Advanced technologies for cruising AUV Urashima. Int J Offshore Polar Eng 18:1–10
Flood RD, Shor AN, Manley PL (1993) Morphology of abyssal mud waves at Project MUDWAVES site in the Argentine Basin. Deep Sea Res II 40:859–888
Geospatial Information Authority of Japan (2009) Report of the earthquake in the Suruga Bay on 11 August, 2009 (Japanese only): http://www.gsi.go.jp/kohokocho/h21-8-11-sizuoka.html
Hsu SK, Kuo J, Lo CL, Tsai CH, Doo WB, Ku CY, Sibuet JC (2008) Turbidity currents, submarine landslide and the 2006 Pingtung earthquake off SW Taiwan. Terr Atmos Ocean Sci 19:767–772. doi:103319/TAO.2008.19.6.767(PT
Iwase R, Asakawa K, Mikada H, Goto T, Mitsuzawa K, Kawaguchi K, Hirata K, Kahio Y (2003) Off Hatsushima Island observatory in Sagami Bay: multidisciplinary long term observation at cold seepage site with underwater mateable connectors for future use. In: Proceedings of the 3rd international workshop on scientific use of submarine cables and related technologies, pp 31–34
Japan Meteorological Agency (2009) Monthly report on earthquake and volcanoes in Japan 2009, pp 42–67 (in Japanese)
Kajiura K (1963) The leading wave of a tsunami. Bull Earthq Res Inst Univ Tokyo 41:545–571
Kato T, Terada Y, Ito K, Hattori R, Abe T, Miyatake T, Koshimura S, Nagai T (2005) Tsunami due to the 2004 September 5th off the Kii peninsula earthquake, Japan, recorded by a new GPS buoy. Earth Planet Space 57:297–301
Matsumoto H, Baba T, Kashiwase K, Misu T, Kaneda Y (2012) Discovery of submarine landslide evidence due to the 2009 Suruga Bay earthquake. In: Yamada Y et al (eds) Submarine mass movements and their consequences, vol. 31, Advances in natural and technological hazards research. Springer, Dordrecht, pp 549–559
Nagai T (2002) Development and improvement of the nationwide coastal wave observation network. Techno-Ocean’2002: Paper-TI-1-2, p 4
Satake K (2001) Tsunami modeling from submarine landslides. Proc ITS 2001:665–674
Tappin DR, Watts P, Grill ST (2008) The Papua New Guinea tsunami of 17 July 1998: anatomy of a catastrophic event. Nat Hazards Earth Syst Sci 8:243–266
Wynn RB, Stow DAV (2002) Classification and characterisation of deep-water sediment waves. Mar Geol 192:7–22
Yamanaka Y (2009) Nagoya University seismological note, No. 20 (in Japanese). http://www.seis.nagoya-u.ac.jp/sanchu/Seismo_Note/2009/NGY20.html
Acknowledgments
The authors thank the captain, marine technicians, and crews of JAMSTEC Research Vessel, Yokosuka, and the operations team of the AUV Urashima for their expert help. The tide gauge and NOWPHAS records were provided by the Japan Meteorological Agency and the Port and Airport Research Institute, respectively. We also thank the editor, Dr. Roger Urgeles, and the two reviewers, Drs. David Völker and Kazuo Konagai, for helpful comments.
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Baba, T., Matsumoto, H., Kashiwase, K., Hyakudome, T., Kaneda, Y., Sano, M. (2012). Micro-bathymetric Evidence for the Effect of Submarine Mass Movement on Tsunami Generation During the 2009 Suruga Bay Earthquake, Japan. In: Yamada, Y., et al. Submarine Mass Movements and Their Consequences. Advances in Natural and Technological Hazards Research, vol 31. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2162-3_43
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DOI: https://doi.org/10.1007/978-94-007-2162-3_43
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