A. Brad Murray

A. Brad Murray

Professor

GEC Program Chair

Primary Appointment

Earth & Ocean Sciences Division

I am interested in many surface processes and patterns, including rivers and a range of desert, arctic, and alpine phenomena. My recent efforts have focused on coastal and nearshore processes. The nearshore environment is a spatially extended system that exhibits complex, dynamic spatial patterns, including the arrangement of bars and channels, waves, and often an array of alongshore and cross-shore currents. I approach such systems with the perspective and techniques developed in the study of nonlinear dynamics and complex systems, looking for possibly simple, large-scale interactions that could explain complex behaviors. I use relatively simple, cellular-automata-like models to test such hypotheses. (click here for recent abstracts) Recently I have been applying these methods to beach and surf-zone problems, but I am expanding my focus onshore and offshore, to include studies of storm-driven currents and sediment transport kilometers from shore, as well as the formation and evolution of shoreline-scale features such as cuspate forelands and capes, cuspate spits, and 'sand waves'. Another aspect of my research involves comparing field or laboratory observations with models of complex systems, for which linear statistics concerning the system's behavior may not sensitively reflect the interactions that produced them. I apply and develop nonlinear data analysis techniques to sensitively test how realistic model interactions are. I also advocate using different model-testing strategies for maximally-realistic simulations and highly simplified models. (See model testing for more information.)

In The News

SELECTED PUBLICATIONS

Murray, AB, Gasparini, NM, Goldstein, EB, and van der Wegen, M. "Uncertainty quantification in modeling earth surface processes: more applicable for some types of models than for others." Computers & Geosciences 90 (May 2016): 6-16.
French, J, Payo, A, Murray, B, Orford, J, Eliot, M, and Cowell, P. "Appropriate complexity for the prediction of coastal and estuarine geomorphic behaviour at decadal to centennial scales." Geomorphology 256 (March 2016): 3-16.
Lazarus, ED, Ellis, MA, Brad Murray, A, and Hall, DM. "An evolving research agenda for human–coastal systems." Geomorphology 256 (March 2016): 81-90.
Hurst, MD, Barkwith, A, Ellis, MA, Thomas, CW, and Murray, AB. "Exploring the sensitivities of crenulate bay shorelines to wave climates using a new vector-based one-line model." Journal of Geophysical Research: Earth Surface 120, no. 12 (December 2015): 2586-2608.

Courses

EOS 203S: The Surface of the Earth (EOS 203S: The Surface of the Earth)
EOS 715: Introduction to Coastal Environmental Change Processes (EOS 715: Introduction to Coastal Environmental Change Processes)
EOS 567: Analyzing Time and Space Series (EOS 567: Analyzing Time and Space Series)
ENVIRON 593: Independent Studies and Projects (ENVIRON 593: Independent Studies and Projects)
EOS 316A: Beach and Island Geological Processes (EOS 316A: Beach and Island Geological Processes)

Contact Information

Box 90230
Durham, NC 27708-0230
334 Old Chem Bldg
Durham, NC 27708

Education

Ph.D., University of Minnesota, Twin Cities (1995)
M.S., University of Minnesota, Twin Cities (1990)
B.A., University of Minnesota, Twin Cities (1986)