|About this Abstract
||7th World Congress on Integrated Computational Materials Engineering (ICME 2023)
||Geospatiotemporal Modeling of Near Subsurface Temperatures of the Continental United States for Assessment of Materials Degradation
||Deepa Bhuvanagiri, Hope E. Omodolor, Erika I. Barcelos, Vibha Mandayam, Sameera Nalin Venkat, R. Mohan Srivastava, Roger H French, Jeffrey Yarus
|On-Site Speaker (Planned)
In this study, we assess the variation in temperature at selected subsurface depths between the surface of the earth extending to approximately 300m. It is a common rule of thumb that a 10 degree Celsius change in temperature doubles the degradation and failure rates of systems deployed. Thus, understanding temperature distribution both laterally and vertically in the subsurface is an important factor in understanding substructure materials degradation. We produced maps depicting subsurface temperature variation at selected shallow depths across the continental United States; respectively, 100m, 200m, and 300m using (ordinary) kriging. Additionally, Nevada, Michigan, and Ohio were selected for more detailed temperature mapping evaluation including a comparison of three different geostatistical methods; Ordinary Kriging, Fixed Rank Kriging, and Conditional Simulation. Results from all methods employed and at all depths analyzed confirmed heterogeneous temperature patterns across the United States and within the individual states.