Ice gouge depth determination via an efficient stochastic dynamics technique

• Published in: Journal of Offshore Mechanics and Arctic Engineering
• Main Authors: Gazis, Nikolaos, Kougioumtzoglou, Ioannis A., Patelli, Edoardo
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 2017
• Subjects: Naval architecture. Shipbuilding. Marine engineering; Environmental engineering; Arctic
• Online Access: https://strathprints.strath.ac.uk/70475/; https://strathprints.strath.ac.uk/70475/1/Gazis_etal_JOMAE_2016_Ice_gouge_depth_determination_via_an_efficient_stochastic_dynamics_technique.pdf; https://doi.org/10.1115/1.4034372

A simplified model of the motion of a grounding iceberg for determining the gouge depth into the seabed is proposed. Specifically, taking into account uncertainties relating to the soil strength, a nonlinear stochastic differential equation governing the evolution of the gouge length/depth in time is derived. Further, a recently developed Wiener path integral (WPI) based approach for solving approximately the nonlinear stochastic differential equation is employed; thus, circumventing computationally demanding Monte Carlo based simulations and rendering the approach potentially useful for preliminary design applications. The accuracy/reliability of the approach is demonstrated via comparisons with pertinent Monte Carlo simulation (MCS) data.