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Expedition 314 methods1

Expedition 314 Scientists2


Integrated Ocean Drilling Program (IODP) Expedition 314 is the first step in a multiexpedition, multiyear project to carry out the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE). The three expeditions that make up Stage 1 of the project focus on coring and logging operations at high-priority riserless sites on the Kumano transect. During Expedition 314, we focused exclusively on in situ measurements of subseafloor physical properties, lithology, stress, and geomechanics using logging-while-drilling (LWD) techniques, including real-time uphole data transmission (commonly referred to as measurement while drilling [MWD]). In this chapter, we explain the operation of LWD instruments and the physical principles behind the geophysical measurements obtained. In addition, we describe the methods used by shipboard scientists to arrive at the data analyses and interpretations reported in the site chapters of this volume.

1 Expedition 314 Scientists, 2009. Expedition 314 methods. In Kinoshita, M., Tobin, H., Ashi, J., Kimura, G., Lallemant, S., Screaton, E.J., Curewitz, D., Masago, H., Moe, K.T., and the Expedition 314/315/316 Scientists, Proc. IODP, 314/315/316: Washington, DC (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/​iodp.proc.314315316.112.2009

2 Expedition 314/315/316 Scientists’ addresses.

Publication: 11 March 2009
MS 314315316-112