Extraction of P Wave From Ambient Seafloor Noise Observed by Distributed Acoustic Sensing. - Tonegawa, T.; Araki, E.; Matsumoto, H.; Kimura, T.; Obana, K.; Fujie, G.; Arai, R.; Shiraishi, K.; Nakano, M.; Nakamura, Y.; Yokobiki, T.; Kodaira, S. (Geophysical Research Letters, 2022)