Collaborative Research: Laboratory Investigations of Fault Zone Mechanical Behavior and Fluid Overpressure (EOR for IODP NanTroSEIZE Expeditions 314, 315, and 316)

这是一项建议，目的是对综合大洋钻探计划在南海海槽地震带实验（NantroSEIZE）钻探中回收的沉积物的性质和成分进行一系列协调一致的实验室分析。拟议的工作将产生测试NanTroSEIZE核心假设所需的实验室数据，特别是当它们与断层强度、孔隙压力和断层滑动稳定性有关时。这项工作将产生全面的数据集，描述力学和运输性能，基于实验室的限制，在原位孔隙压力和渗透性的断层系统，产生巨大的地震和海啸，并整合数据集，以更好地了解如何流体，颗粒结构，矿物成分联合收割机结合，以调制故障的行为。和孔隙压力的产生。Nantroseize工作的社会相关性非常强。该项目将支持七名研究生，其中几名被选为第一阶段的船上科学家。它还将支持几个本科生作为实验室助理和高级论文。实验室工作将为NanTroSEIZE研究界的其他人提供有价值的数据，为规划即将进行的隔水管钻井奠定科学基础，并在全球断层带钻井界产生相当大的兴趣。通过IODP、CDEX和JOI E O结构开展外联方案。

This is a proposal to complete a coordinated series of laboratory analyses of the properties and composition of sediments recovered from the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) drilling by the Integrated Ocean Drilling Program. The proposed work will generate laboratory data needed to test the core hypotheses of NanTroSEIZE, particularly as they relate to fault strength, pore pressure, and fault sliding stability. The work will produce comprehensive datasets describing mechanical and transport properties, lab-based constraints on in situ pore pressure and permeability within a fault system that generates great earthquakes and tsunamis, and integration of datasets to better understand how fluids, grain fabric, and mineral composition combine to modulate fault behavior.Broader Impacts The results will be broadly applicable to understanding fault strength, slip behavior, and pore pressure generation in seismogenic fault zones of all types. Societal relevance of NanTroSEIZE work is very strong. The project will support seven graduate students, several of whom were selected to sail during Stage 1 as shipboard scientists. It will also support several undergrads as lab assistants and for senior theses. Lab work will provide valuable data for the rest of the NanTroSEIZE research community, build a scientific foundation for planning forthcoming riser drilling, and generate considerable interest within the global fault-zone-drilling community. Outreach programs through IODP, CDEX, and JOI E&O structure.