Paleotsunami researches along the Ryukyu Trench
نویسندگان
چکیده
منابع مشابه
Distribution of low-frequency earthquakes accompanying the very low frequency earthquakes along the Ryukyu Trench
This study investigated the activity and distribution of low-frequency earthquakes (LFEs) accompanying the very low frequency earthquakes (VLFEs) in the central and southern Ryukyu Trench. This investigation was based on shortperiod seismometer waveforms obtained by the Japan Meteorological Agency from April 2004 to December 2015. The LFEs were detected using the Envelope Correlation Method, an...
متن کاملStructure of the tsunamigenic plate boundary and low-frequency earthquakes in the southern Ryukyu Trench
It has been recognized that even weakly coupled subduction zones may cause large interplate earthquakes leading to destructive tsunamis. The Ryukyu Trench is one of the best fields to study this phenomenon, since various slow earthquakes and tsunamis have occurred; yet the fault structure and seismic activity there are poorly constrained. Here we present seismological evidence from marine obser...
متن کاملThe potential for a great earthquake along the southernmost Ryukyu subduction zone
[1] Interseismic GPS data along the Hualien-Suao coast (NE Taiwan) shows a pattern of strain accumulation that is consistent with a potential future large shallow earthquake along the southernmost Ryukyu subduction zone. The measured shortening rate parallel to the Ryukyu Trench is 80 mm/yr, about twice of the shortening rate perpendicular to the Ryukyu Trench. We invert for slip-deficit rates ...
متن کاملWhat controls the lateral variation of large earthquake occurrence along the Japan Trench?
The lateral (along trench axis) variation in the mode of large earthquake occurrence near the northern Japan Trench is explained by the variation in surface roughness of the subducting plate. The surface roughness of the ocean bottom near the trench is well correlated with the large-earthquake occurrence. The region where the ocean bottom is smooth is correlated with 'typical' large underthrust...
متن کاملAlong-trench variation in seafloor displacements after the 2011 Tohoku earthquake
The 2011 Tohoku-oki earthquake was the largest earthquake ever observed with seafloor geodetic techniques in and around its source region. Large crustal deformation associated with both the coseismic rupture and the rapid postseismic deformation has been reported. However, these observations are insufficient to describe the postseismic deformation processes occurring around the broad rupture ar...
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ژورنال
عنوان ژورنال: The Journal of the Geological Society of Japan
سال: 2017
ISSN: 0016-7630,1349-9963
DOI: 10.5575/geosoc.2017.0046