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doi:10.2204/iodp.proc.344.202.2015

Introduction

Integrated Ocean Drilling Program (IODP) Expedition 344 is the second expedition of the Costa Rica Seismogenesis Project (CRISP). The primary objective of Expeditions 334 and 344 was to investigate the processes that control seismic rupture at erosive plate boundaries. Expedition 344 recovered cores from offshore the Osa Peninsula of Costa Rica (Fig. F1). In this study, we used flow-through permeability tests to measure the permeability of core samples from Sites U1380 and U1381 and Sites U1412–U1414 (Fig. F2). Grain size analyses were conducted on a subset of the samples to characterize the fraction of sand-, silt-, and clay-sized particles. The purpose of these measurements is to help construct permeability–porosity relationships (e.g., Daigle and Screaton, 2015) for use in modeling of fluid flow and pore pressure generation.

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