Automatic first arrival picking of P and S-wave using machine learning from temporary observation records on a volcanic island, Hachijojima

Hiroyuki Azuma1, Hikaru Kunimasa1, Ryohei Tottori1, Yoshiya Oda1, Toshiki Watanabe2 and Toshifumi Matsuoka3, (1)Tokyo Metropolitan Univ, Hachioji, Japan, (2)Nagoya University, Nagoya, Aichi, Japan, (3)Fukada Geological Institute, Tokyo, Japan