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Rights: The International Ocean Discovery Program, Dr Patrick Fulton Published 5 April 2018 Size: 190 KB

To measure fluid pressure at different depths in the borehole, casing (pink pipe) is lowered into the seafloor, guided by a re-entry cone (grey funnel) already deployed. The casing has three tubes (turquoise lines) strapped to it that are connected to pressure sensors (orange zones) at three different depths – above, within and below the fault zone.