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Alan Shiller

Dr. Alan Shiller

Full Professor


Alan M. Shiller is Bennett Distinguished Professor in the Sciences and Director of the Center for Trace Analysis: I'm an aqueous geochemist in USM's Division of Marine Science located at Stennis Space Center (~75 miles S of Hattiesburg). Work in my lab goes on in various environments from alpine rivers to the coastal zone to the open ocean. We study dissolved trace metals, methane, nutrients, O2, radium and radon. In the open ocean, we participate in the international GEOTRACES program, looking at sections of dissolved trace elements across major ocean basins. In the coastal zone, we’re particularly interested in submarine groundwater discharge, a major, but hidden, route of material input to the ocean. Our river work focuses on understanding what controls concentrations of dissolved trace elements and what this tells us about watershed processes. See my online profiles at and

  • PHD - University of California-San Diego (1982)
  • BS - California Institute of Technology (1975)

Marine Chemistry (includes laboratory)
Estuaries (co-taught with others)
Marine Sediments and Sedimentary Geochemistry (co-taught with C. Brunner)
Aquatic Chemistry
Seminar in Marine Science (emphasizes making scientific presentations)

  • Gallium: a new tracer of Pacific water in the Arctic Ocean, Journal of Geophysical Research: Oceans, 2020, 10.1029/2019jc015842
  • Processes controlling the distribution of dissolved Al and Ga along the U.S. GEOTRACES East Pacific Zonal Transect (GP16), Deep Sea Research Part I: Oceanographic Research Papers, 2019, 10.1016/j.dsr.2019.04.009
  • Extent of Mississippi River water in the Mississippi Bight and Louisiana Shelf based on water isotopes, Estuarine, Coastal and Shelf Science, 2019, 10.1016/j.ecss.2019.04.030
  • Temporal and spatial distributions of nutrients and trace elements (Ba, Cs, Cr, Fe, Mn, Mo, U, V and Re) in Mississippi coastal waters: Influence of hypoxia, submarine groundwater discharge, and episodic events, Continental Shelf Research, 2019, 10.1016/j.csr.2019.01.013
  • Tracking sea surface salinity and dissolved oxygen on a river-influenced, seasonally stratified shelf, Mississippi Bight, northern Gulf of Mexico, Continental Shelf Research, 2018, 10.1016/j.csr.2018.09.009
  • Light rare earth element depletion during Deepwater Horizon blowout methanotrophy, Scientific Reports, 2017, 10.1038/s41598-017-11060-z
  • Preventing Discrimination & Harassment: Employees V2.3
  • Family Educational Rights and Privacy Act
  • Title IX: Preventing Sexual Misconduct for Faculty and Staff – "Responsible Employee" Edition
  • American Chemical Society
  • American Geophysical Union
  • Association for the Sciences of Limnology and Oceanography
  • Geochemical Society
  • The Oceanography Society

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Contact Me

Stennis Space Center 1020-131




Areas of Expertise

Marine geochemistry, trace elements, methane, radium/radon, oceanography, rivers, estuaries