[IEEE 2011 IEEE Symposium on Underwater Technology (UT) and Workshop on Scientific Use of Submarine Cables and Related Technologies (SSC) - Tokyo, Japan (2011.04.5-2011.04.8)] 2011 IEEE Symposium on Underwater Technology and Workshop on Scientific Use of Submarine Cables and Related Technologies - Automated real-time acoustic detection of Fin Whale calls at the deep sea floor observatory off Kushiro-Tokachi, Japan