From: Two independent signals detected by ocean bottom electromagnetometers during a non-eruptive volcanic event: Ogasawara Island arc volcano, Nishinoshima
Site
Rotation angle (arc-degrees)
Before Period A
After Period A
Entire observation period
NS02
− 105.85
− 105.76
− 105.79
NS03
137.18
137.39
137.21
NS04
111.33
111.27
111.31
NS05
175.59
175.71
175.70
NS06
64.40
58.81
64.36