The IODP Expedition 332 : Eyes on the Prism, The NanTroSEIZE Observatories
1Center for Deep Earth Exploration (CDEX), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama Institute for Earth Sciences, 3173- 25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236- 0001 Japan
2MARUM and Department of Geosciences, University of Bremen, 28359 Bremen, Germany
3Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061 Japan
Abstract. The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) is a major long-term drilling project designed to investigate the seismogenic behavior of subduction zone plate boundaries. Integrated Ocean Drilling Program (IODP) Expedition 332 deployed a long-term borehole monitoring system (LTBMS), an advanced Circulation Obviation Retrofit Kit (CORK)-type observatory. The recovery of pressure and temperature data from a temporary observatory (SmartPlug) deployed during IODP Expedition 319 helped prove the SmartPlug concept. The permanent LTBMS was deployed n the upper 1000 m of Site C0002, while the SmartPlug was recovered from Site C0010 and replaced with a more capable "GeniusPlug", incorporating an extension with a geochem-ical sampler and biological experiment to the original SmartPlug design. SmartPlug pressure and temperature data showed signs of transient pressure events.
Toczko, S. T., Kopf, A. J., Araki, E., and the IODP Expedition 332 Scientific Party: The IODP Expedition 332 : Eyes on the Prism, The NanTroSEIZE Observatories, Sci. Dril., 14, 34-38, doi:10.2204/iodp.sd.14.04.2012, 2012.