Apply to Sail: Expedition 358 NanTroSEIZE Plate Boundary Riser 4



The International Ocean Discovery Program (IODP) is now accepting applications for scientific participants on Expedition 358 (NanTroSEIZE Plate Boundary Riser 4) aboard the D/V Chikyu, operated by the Center for Deep Earth Exploration (CDEX) within the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). For more information about the scientific objectives of this expedition and implementation plan, watch a recorded webinar that was held on 29 November 2017 (click here to access).


The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) Project comprises multiple expeditions over a multi-year period aimed at sampling and instrumenting the up-dip transition into the subduction seismogenic zone. The goal of Expedition 358 is to deepen riser hole C0002F/N/P from 3000 mbsf to the primary megathrust fault target at ~5200 mbsf, using logging-while-drilling (LWD), downhole measurements, and drill cuttings analysis extensively, in addition to limited coring intervals. This expedition will be the culmination of 10 years of IODP NanTroSEIZE deep drilling efforts to reach the plate interface fault system at seismogenic / slow slip depths.


Drilling at Site C0002F/N/P aims to further deepen this hole to access the subduction plate boundary fault system, testing hypotheses for the mechanics and geological/geochemical evolution of megathrust faults, as well as determining the nature of the prominent seismic reflector. Sampling and characterization of rock lithology, chemical and physical properties, structure, and in situ stress & pore pressure conditions of the lower wedge, immediate hanging wall, fault zone and upper footwall are the primary objectives. Please read the Expedition 358 Call For Participation for further details on the planned science and operations.


The expedition is currently planned to begin on 7 October 2018 and finish on 21 March 2019 (164 days). This expedition is planned for more than five months at sea and therefore will not be staffed in the standard expedition “shipboard scientific party” model. Rather, we solicit applicants for the scientific party who can commit to the following activities:


(1)  Scientific party member should make themselves available for time windows of 2-3 months’ duration, during which they will likely be asked to board Chikyu for one or more 2 to 4 week “shifts.” The shipboard tasks of cuttings, log, and downhole experiment analysis will take place in these concentrated efforts during the expedition. Members of the scientific party will be asked to maintain flexible schedules to accommodate this need.


(2)  All members of the scientific party will be expected to participate in a final analysis and sampling meeting at the end of the expedition, anticipated to require several weeks in March or April of 2019.


(3)  Participants will require helicopter underwater escape training (HUET) certification from an approved OPTIO training center.


Opportunities exist for researchers (including graduate students) to sail on the expedition. Scientists with interest and expertise in: fault zone structure and mechanics, accretionary complex geology and evolution, lithostratigraphy, physical and hydrogeological properties, diagenetic/metamorphic processes and effects, micropaleontology, microbiology, rock magnetism, and core-log-seismic integration in structurally-complex settings are all invited to apply. Because of the nature of the drilling operation and need for near-real time analysis, expertise in the use of drill cuttings, mud gas, and modern well logging to address sedimentary petrology, structure, physical properties and geomechanics are all especially useful.


U.S.-affiliated scientists interested in participating in this expedition should review the application guidelines and apply to sail through the U.S. Science Support Program. The deadline to apply is January 4, 2018.


For questions, please email