Numerical Constraints on the Causes and Processes of Submarine Slope Failure along Active, Passive, and Volcanic Margins

PI将试图通过数值模拟来模拟沉积堆积物中应力和流体压力(和流动)的演变，从而试图了解海底斜坡在何时何地坍塌。他们建议使用离散元方法(DEM)来模拟这些过程，输入实验室和井眼约束，如剪切强度、内耗、密度和孔隙率，并通过建模得出内耗、压剪强度和拉伸剪切强度以及弹性模量。研究研究的重点将是试图了解这些环境中故障的原因，这是通过直接观察很难实现的。更广泛的影响包括研究生培训、对地球科学中代表性不足的群体的支持、K-12外联、增强的计算基础设施、向更广泛的地质灾害社区传播成果，以及了解与海底滑坡灾害相关的风险的社会益处。

The PIs will attempt to understand why submarine slopes fail where and when they do, through numerical modeling that will simulate the evolution of stresses and fluid pressures (and flow) in sedimentary buildups. They propose to use Discrete Element Methods (DEM) to model these processes, inputting laboratory and borehole constraints such as shear strength, internal friction, density and porosity and deriving internal friction, compressive and tensile shear strengths, and elastic modulii through modeling. The focus of the study research will be to attempt to understand the causes of failure in these environments, which is difficult to accomplish through direct observation. Broader impacts include graduate student training, support of underrepresented groups in the Earth Sciences, K-12 outreach, enhanced computational infrastructure, dissemination of results to the broader geohazards community, and the societal benefits of understanding the risk associated with submarine landslide hazards.