51 - 60 of 91 results for: GEOPHYS

Physics of earthquakes, including nucleation, propagation, and arrest; slip-weakening and rate-and-state friction laws; thermal pressurization and dynamic weakening mechanisms; off-fault plasticity; dynamic fracture mechanics; earthquake energy balance. Problem sets involve numerical simulations on CEES cluster. Prerequisites: GEOPHYS 287. Offered occasionally.

Basic topics and approaches (theory and numerical simulations) on acoustic, electromagnetic, and elastic waves and fields for geophysical applications: dispersion, phase and group velocities, attenuation, reflection and transmission at planar interfaces, high frequency and low frequency approximations, heterogeneous media. Prerequisites: UG level class on waves or consent of instructor.

Borehole seismic imaging for applications to subsurface reservoir characterization and monitoring. Topics include data acquisition, data processing, imaging and inversion. Analysis and processing of synthetic and field datasets. Prerequisites: Waves class equivalent to GP 230, Matlab or other computer programming.

(Same as GP241) Practical methods for quantitative characterization and uncertainty assessment of subsurface reservoir models integrating well-log and seismic data. Multidisciplinary combination of rock-physics, seismic attributes, sedimentological information and spatial statistical modeling techniques. Student teams build reservoir models using limited well data and seismic attributes typically available in practice, comparing alternative approaches. Software provided (SGEMS, Petrel, Matlab). Offered every other year.nRecommended: ERE240/260, or GP222/223, or GP260/262 or GES253/257; ERE246, GP112

Introduction to the physics governing the circulation of the atmosphere and ocean and their control on climate with emphasis on the atmospheric circulation. Topics include the global energy balance, the greenhouse effect, the vertical and meridional structure of the atmosphere, dry and moist convection, the equations of motion for the atmosphere and ocean, including the effects of rotation, and the poleward transport of heat by the large-scale atmospheric circulation and storm systems. Prerequisites: MATH 51 or CME100 and PHYSICS 41.

What processes determine the large-scale structure and motion of Earth? How does convection deep within Earth drive plate tectonics and the formation of ocean basins and mountain ranges? Drawing from fundamental principles of mechanics and thermodynamics, we develop mathematical theories for heat flow, mantle convection, and the bending and breaking of Earth's brittle crust. Scaling arguments and dimensional analysis provide intuition that is refined through analytical and numerical solution (in MATLAB) of the governing equations and validated through comparison with observations. Prerequisites: differential equations ( CME 104 or MATH 53); mechanics and thermodynamics ( PHYSICS 41 and 45); prior programming experience ( CME 192 or CS 106A) is recommended. Offered every other year.

On-the-job-training for master's and doctoral degree students under the guidance of on-site supervisors. Students submit a report detailing work activities, problems, assignment, and key results. May be repeated for credit. Prerequisite: written consent of adviser.

Application of optimization and estimation methods to the analysis and modeling of large observational data sets. Laboratory exercises using inverse theory and applied linear algebra to solve problems of indirect and noisy measurements. Emphasis on practical solution of scientific and engineering problems, especially those requiring large amounts of data, on digital computers using scientific languages. Also addresses advantages of large-scale computing, including hardware architectures, input/output and data bus bandwidth, programming efficiency, parallel programming techniques. Student projects involve analyzing real data by implementing observational systems such as tomography for medical and Earth observation uses, radar and matched filtering, multispectral/multitemporal studies, or migration processing. Prequisites: Programming with high level language. Recommended: EE261, EE263, EE178, ME300 or equivalent.