Tsunakawa-Shaw method - an absolute paleointensity technique using alternating field demagnetization

Yuhji Yamamoto1, Nobutatsu Mochizuki2, Hidetoshi Shibuya2 and Hideo Tsunakawa3, (1)Kochi University, Marine Core Research Institute, Kochi, Japan, (2)Kumamoto University, Kumamoto, Japan, (3)Tokyo Institute of Technology, Tokyo, Japan