Dynamic process of turbidity generation triggered by the 2011 Tohoku-Oki earthquake
作者： Takuroh Noguchi , Wataru Tanikawa , Takehiro Hirose , Weiren Lin , Shinsuke Kawagucci
DOI: 10.1029/2012GC004360
关键词: Peak ground acceleration 、 Bathymetry 、 Submarine landslide 、 Epicenter 、 Slope stability 、 Seismology 、 Turbidity 、 Geology 、 Geomorphology 、 Seafloor spreading 、 Sediment
摘要: [1] We analyzed the distribution of turbidity in seawater near epicenter 2011 Tohoku earthquake (Mw 9.0) as well mineral composition and grain size suspended particles shallow sediments cores from same area. One month after an area where large changes bathymetry accompanied earthquake, we observed a strong anomaly above seafloor (maximum 5 mg/L) that greatly exceeded measured several years before (average 0.59 mg/L). The were composed material similar to surface sediment cores, inferred they generated locally by disturbance due slope failure. We estimated stability on basis geophysical characteristics acceleration earthquake. Our results showed submarine landslide could have been induced very ground high 10–15 m/s2, even if layer sliding was thin. interpreted one result landsliding stirring up unconsolidated around epicentral
harvard.edu
sci-hub.se 参考文章(18)
David Jon Furbish, Fluid Physics in Geology: An Introduction to Fluid Motions on Earth's Surface and within Its Crust ,(1996)
T. Goldfinger, C., Nelson, C.H., Morey, A.E., Johnson, J.E., Patton, J.R., Karabanov, E., Gutiérrez- Pastor, J., Eriksson, A.T., Gràcia, E., Dunhill, G., Enkin, R.J., Dallimore, A., and Vallier, Turbidite Event History—Methods and Implications for Holocene Paleoseismicity of the Cascadia Subduction Zone Professional Paper. ,(2012) , 10.3133/PP1661F
Robert Thunell, Eric Tappa, Ramon Varela, Martin Llano, Yrene Astor, Frank Muller-Karger, Richard Bohrer, Increased marine sediment suspension and fluxes following an earthquake Nature. ,vol. 398, pp. 233- 236 ,(1999) , 10.1038/18430
Takashi Furumura, Shunsuke Takemura, Shinako Noguchi, Teito Takemoto, Takuto Maeda, Kazuhisa Iwai, Simanchal Padhy, Strong ground motions from the 2011 off-the Pacific-Coast-of-Tohoku, Japan (Mw = 9.0) earthquake obtained from a dense nationwide seismic network Landslides. ,vol. 8, pp. 333- 338 ,(2011) , 10.1007/S10346-011-0279-3
K.R. McClay, Thrust and nappe tectonics Tectonophysics. ,vol. 50, pp. 79- 79 ,(1978) , 10.1016/0040-1951(78)90200-7
S. Ide, A. Baltay, G. C. Beroza, Shallow Dynamic Overshoot and Energetic Deep Rupture in the 2011 Mw 9.0 Tohoku-Oki Earthquake Science. ,vol. 332, pp. 1426- 1429 ,(2011) , 10.1126/SCIENCE.1207020
Takuto Maeda, Takashi Furumura, Shin’ichi Sakai, Masanao Shinohara, Significant tsunami observed at ocean-bottom pressure gauges during the 2011 off the Pacific coast of Tohoku Earthquake Earth, Planets and Space. ,vol. 63, pp. 803- 808 ,(2011) , 10.5047/EPS.2011.06.005
Monty A. Hampton, Arnold H. Bouma, Paul R. Carlson, Bruce F. Molnia, Edward C. Clukey, Dwight A. Sangrey, Quantitative Study of Slope Instability in the Gulf of Alaska Offshore Technology Conference. ,(1978) , 10.4043/3314-MS
Hitoshi Mikada, Kyohiko Mitsuzawa, Hiroyuki Matsumoto, Tomoki Watanabe, Shigehiko Morita, Riyo Otsuka, Hiroko Sugioka, Toshitaka Baba, Eiichiro Araki, Kiyoshi Suyehiro, New discoveries in dynamics of an M8 earthquake-phenomena and their implications from the 2003 Tokachi-oki earthquake using a long term monitoring cabled observatory Tectonophysics. ,vol. 426, pp. 95- 105 ,(2006) , 10.1016/J.TECTO.2006.02.021
T. Fujiwara, S. Kodaira, T. No, Y. Kaiho, N. Takahashi, Y. Kaneda, The 2011 Tohoku-Oki Earthquake: Displacement Reaching the Trench Axis Science. ,vol. 334, pp. 1240- 1240 ,(2011) , 10.1126/SCIENCE.1211554