Are "three successive earthquakes" or M9 earthquakes are possible in the Nankai Trough ?

Authors=SENO Tetsuzo

Journal/Book_names=GSJ Chishitsu News

volume=2

number=7

pages=212-214

Publish_year=2013

Publish_Country=JPN

Publisher=Geological Survey of Japan, AIST

Language_of_Text=JA

ISSN=21866287

ID=201310345