Gregory Lang

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All GLERL Publications:
Note: Although not all publications are available via our website, electronic copies may be available. Contact the publications office at pubs.glerl@noaa.gov.
  • VANDERPLOEG, H.A., S.A. POTHOVEN, D.M. Krueger, D.M. MASON, J.R. LIEBIG, J.F. CAVALETTO, S.A. RUBERG, G.A. LANG, and R. Ptacnikova. Spatial and predatory interactions of visually preying nonindigenous zooplankton and fish in Lake Michigan during midsummer. Journal of Great Lakes Research 41(Supplement 3):125-142 (DOI:10.1016/j.jglr.2015.10.005) (2015).
  • GRONEWOLD, A.D., E.J. ANDERSON, B.M. LOFGREN, P.D. Blanken, J. WANG, J.P. SMITH, T.S. HUNTER, G.A. LANG, C.A. STOW, D. BELETSKY, and J.F. BRATTON. Impacts of extreme 2013-2014 winter conditions on Lake Michigan's fall heat content, surface temperature, and evaporation. Geophysical Research Letters 42:7 pp. (DOI:10.1002/2015GL063799) (2015).
  • Alves, J.H., A. Chawla, H.L. Tolman, D.J. SCHWAB, G.A. LANG, and G. Mann. The operational implementation of a Great Lakes wave forecasting system at NOAA/NCEP. Weather and Forecasting 29(6):1473-1497 (DOI:10.1175/WAF-D-12-00049.1) (2014). https://www.glerl.noaa.gov/pubs/fulltext/2014/20140069.pdf
  • NALEPA, T.F., D.L. FANSLOW, G.A. LANG, K. MABREY, and M. ROWE. Lake-wide benthic surveys in Lake Michigan in 1994-95, 2000, 2005, and 2010: Abundances of the amphipod Diporeia spp. and abundances and biomass of the mussels Dreissena polymorpha and Dreissena rostriformis bugensis. NOAA Technical Memorandum GLERL-164. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 21 pp. (2014). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-164/tm-164.pdf
  • ROCKWELL, D.C., K.B. CAMPBELL, G.A. LANG, D.J. SCHWAB, G. Mann, and R. Wagenmaker. Beach water quality decision support system. NOAA Technical Memorandum GLERL-156. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 64 pp. (2013). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-156/tm-156.pdf
  • Alves, J.H., A. Chawla, H.L. Tolman, D.J. SCHWAB, G.A. LANG, and G. Mann. The Great Lakes wave model at NOAANCEP: challenges and future developments. 12th International Workshop on Wave Hindcasting and Forecasting, Kohala Coast, Hawaii, October 30, 2011 - November 4, 2011. Environment Canada, the Canadian Federal Program of Energy R&D, and the WMO/IOC Joint Technical Commission for Oceanography and Marine Meteorology (JCOMM), 6 pp. (2011). https://www.glerl.noaa.gov/pubs/fulltext/2011/20110041.pdf
  • Chu, P.Y., J.G.W. Kelley, G.V. Mott, A.J. Zhang, and G.A. LANG. Development, implementation, and skill assessment of the NOAA/NOS Great Lakes Operational Forecast System. Ocean Dynamics 61(9):1305-1316 (DOI:10.1007/s10236-011-0424-5) (2011). https://www.glerl.noaa.gov/pubs/fulltext/2011/20110016.pdf
  • Kelley, J.G.W., A.J. Zhang, P. Chu, and G.A. LANG. Skill assessment of NOS Lake Huron Operational Forecast System (LHOFS). NOAA Technical Memorandum NOS CS 23. NOAA, National Ocean Service, Coast Survey Development Laboratory, Silver Spring, MD, 57 pp. (2010). https://www.glerl.noaa.gov/pubs/fulltext/2010/2010tmNOS_CS23.pdf
  • ANDERSON, E.J., D.J. SCHWAB, and G.A. LANG. Real-time hydraulic and hydrodynamic model of the St. Clair River, Lake St. Clair, Detroit River system. Journal of Hydraulic Engineering August 2010:507-518 (2010). https://www.glerl.noaa.gov/pubs/fulltext/2010/20100017.pdf
  • VANDERPLOEG, H.A., S.A. Ludsin, J.F. CAVALETTO, T.O. Höök, S.A. POTHOVEN, S.B. Brandt, J.R. LIEBIG, and G.A. LANG. Hypoxic zones as habitat for zooplankton in Lake Erie: Refuges from predation or exclusion zones? Journal of Experimental Marine Biology and Ecology 381:S108-S120 (2009).
  • VANDERPLOEG, H.A., S.A. Ludsin, S.A. RUBERG, T.O. Höök, S.A. POTHOVEN, S.B. Brandt, G.A. LANG, J.R. LIEBIG, and J.F. CAVALETTO. Hypoxia affects spatial distributions and overlap of pelagic fish, zooplankton, and phytoplankton in Lake Erie. Journal of Experimental Marine Biology and Ecology 381:S92-S107 (2009).
  • NALEPA, T.F., D.L. FANSLOW, and G.A. LANG. Transformation of the offshore benthic community in Lake Michigan: Recent shift from the native amphipod Diporeia spp. to the invasive mussel Dreissena rostriformis bugensis. Freshwater Biology 54(3):466-479 (2009). https://www.glerl.noaa.gov/pubs/fulltext/2009/20090007.pdf
  • RUBERG, S.A., S.T. Kendall, B.A. Biddanda, T. Black, S.C. Nold, W.R. Lusardi, R. Green, T. Casserley, E. Smith, T.G. Sanders, G.A. LANG, and S.A. CONSTANT. Observations of the Middle Island sinkhole in Lake Huron: A unique hydrogeologic and glacial creation of 400 million years. Marine Technology Society Journal 42(4):12-21 (2009). https://www.glerl.noaa.gov/pubs/fulltext/2009/20090012.pdf
  • Kelley, J.G.W., A.-J. Zhang, P. Chu, and G.A. LANG. Skill assessment of NOS Lake Ontario Operational Forecast System (LOOFS). NOAA Technical Memorandum NOS CS 13. NOAA Office of Coast Survey, Coast Survey Development Lab, Silver Spring, MD, 40 pp. (2008). https://www.glerl.noaa.gov/pubs/fulltext/2008/2008tmNOS_CS13.pdf
  • NALEPA, T.F., D.L. FANSLOW, G.A. LANG, D.B. LAMARAND, L.G. CUMMINS, and G.S. CARTER. Abundances of the amphipod Diporeia spp. and the mussels Dreissena polymorpha and Dreissena rostriformis bugensis in Lake Michigan in 1994-1995, 2000, and 2005. NOAA Technical Memorandum GLERL-144. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 25 pp. (2008). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-144/tm-144.pdf
  • Chu, P., J.G.W. Kelley, A.-J. Zhang, G.A. LANG, and K.W. Bedford. Skill assessment of NOS Lake Erie Operational Forecast System (LEOFS). NOAA Technical Memorandum NOS CS 12. NOAA Office of Coast Survey, Coast Survey Development Lab, Silver Spring, MD, 73 pp. (2007). https://www.glerl.noaa.gov/pubs/fulltext/2007/2007tmNOS_CS12
  • Kelley, J.G.W., P. Chu, A.-J. Zhang, and G.A. LANG. Skill assessment of NOS Lake Superior Operational Forecast System (LSOFS). NOAA Technical Memorandum NOS CS 9. NOSS Office of Coast Survey, Coast Survey Development Lab, Silver Spring, MD, 48 pp. (2007). https://www.glerl.noaa.gov/pubs/fulltext/2007/2007tmNOS_CS9.pdf
  • Kelley, J G.W., P. Chu, A.-J. Zhang, G.A. LANG, and D.J. SCHWAB. Skill assessment of NOS Lake Michigan Operational Forecast System (LMOFS). NOAA Technical Memorandum NOS CS 8. NOAA, Office of Coast Survey, Coast Survey Development Laboratory, Silver Spring, MD, 67 pp. (2007). https://www.glerl.noaa.gov/pubs/fulltext/2007/2007tmNOS_CS8.pdf
  • NALEPA, T.F., D.L. FANSLOW, S.A. POTHOVEN, A.J. FOLEY III, and G.A. LANG. Long-term trends in benthic macroinvertebrate populations in Lake Huron over the past four decades. Journal of Great Lakes Research 33(2):421-436 (2007). https://www.glerl.noaa.gov/pubs/fulltext/2007/20070020.pdf
  • NALEPA, T.F., D.L. FANSLOW, S.A. POTHOVEN, A.J. FOLEY III, G.A. LANG, S.C. Mozley, and M.W. Winnell. Abundance and distribution of benthic macroinvertebrate populations in Lake Huron in 1972 and 2000-2003. NOAA Technical Memorandum GLERL-140. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 33 pp. (2007). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-140/tm-140.pdf
  • VANDERPLOEG, H.A., T.H. JOHENGEN, P.J. Lavrentyev, C. Chen, G.A. LANG, M.A. Agy, M.H. Bundy, J.F. CAVALETTO, B.J. EADIE, J.R. LIEBIG, G.S. MILLER, S.A. RUBERG, and M.J. McCORMICK. Anatomy of the recurrent coastal sediment plume in Lake Michigan and its impacts on light climate, nutrients, and plankton. Journal of Geophysical Research 112(C03S90, doi:10.1029/2004JC002379):23 pp. (2007). https://www.glerl.noaa.gov/pubs/fulltext/2007/20070010.pdf
  • NALEPA, T. F., D. L. FANSLOW, A. J. FOLEY III, G. A. LANG, B. J. EADIE, and M. A. QUIGLEY. Continued disappearance of the benthic amphipod Diporeia spp. in Lake Michigan: Is there evidence of food limitation? Canadian Journal of Fisheries and Aquatic Sciences 63:872-890 (2006). https://www.glerl.noaa.gov/pubs/fulltext/2006/20060003.pdf
  • NALEPA, T. F., D. L. FANSLOW, A. J. FOLEY III, G. A. LANG, B. J. EADIE, and M. A. QUIGLEY. Continued disappearance of the benthic amphipod Diporeia spp. in Lake Michigan: Is there evidence for food limitation? Aquatic Invaders 17(3):1-12 (2006). https://www.glerl.noaa.gov/pubs/fulltext/2006/20060018.pdf
  • NALEPA, T. F., D. L. FANSLOW, G. A. LANG and S. A. RUBERG. Recent trends in benthic macroinvertebrate populations in Lake Michigan. In State of Lake Michigan (SOLM) - Ecology, Health, and Management. T. Edsall and M. Munawar (eds.). Ecovision World Monograph Series, Aquatic Ecosystem Health and Management Society, 269-292 (2005).
  • RUBERG, S.A., D.F. Coleman, T.H. JOHENGEN, G.A. Meadows, H.W. VanSumeren, G. A. LANG, and B. A. Biddanda. Groundwater plume mapping in a submerged sinkhole in Lake Huron. Marine Technology Society Journal 39(2):65-69 (2005). https://www.glerl.noaa.gov/pubs/fulltext/2005/20050038.pdf
  • LANG, G. A. and D. J. SCHWAB. Episodic Events: Great Lakes Experiment Data Archive. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 2 CD-ROM Set (2003).
  • NALEPA, T. F., D. L. FANSLOW, M. B. LANSING, and G. A. LANG. Trends in the benthic macroinvertebrate community of Saginaw Bay, 1987-96: Responses to phosphorus abatement and Dreissena polymorpha. Journal of Great Lakes Research 29(1):14-33 (2003). https://www.glerl.noaa.gov/pubs/fulltext/2003/20030023.pdf
  • NALEPA, T. F., D. L. FANSLOW, M. B. LANSING, G. A. LANG, M. FORD, G. GOSTENIK, and D. J. HARTSON. Abundance, biomass, and species composition of benthic macroinvertebrate populations in Saginaw Bay, Lake Huron, 1987-96. NOAA Technical Memorandum GLERL-122, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 32 pp. (2002). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-122
  • NALEPA, T. F., D. J. HARTSON, D. L. FANSLOW, and G. A. LANG. Recent population changes in freshwater mussels (Bivalvia: Unionidae) and zebra mussels (Dreissena polymorpha) in Lake St. Clair, USA. American Malacological Bulletin 16(1/2):141-145 (2001).
  • RUBERG, S. A., H. A. VANDERPLOEG, J. F. CAVALETTO, G. A. LANG, J. R. LIEBIG, T. C. MILLER, and M. AGY. Plankton survey system. Proceedings of the Oceans 2001 MTS/IEEE Conference, Honolulu, HI, November 5-8, 2001. Marine Technology Society, Washington, DC, pp. 1899-1903 (2001). https://www.glerl.noaa.gov/pubs/fulltext/2001/20010017.pdf
  • NALEPA, T. F., G. A. LANG, and D. L. FANSLOW. Trends in benthic macroinvertebrate populations in southern Lake Michigan. Verh. Internat. Verein. Limnol. 27:2540-2545 (2000).
    https://www.glerl.noaa.gov/pubs/fulltext/2000/20000004.pdf
  • JOHENGEN, T. H., T. F. NALEPA, G. A. LANG, D. L. FANSLOW, H. A. VANDERPLOEG, and M. A. AGY. Physical and chemical variables of Saginaw Bay, Lake Huron in 1994-1996. NOAA Technical Memorandum GLERL-115, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, NTIS# PB2000-102421/XAB, 39 pp. (2000). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-115
  • NALEPA, T. F., D. J. HARTSON, J. Buchanan, J. F. CAVALETTO, G. A. LANG, and S. J. Lozano. Spatial variation in density, mean size, and physiological condition of the holoarctic amphipod Diporeia spp. in Lake Michigan. Freshwater Biology 43:107-119 (2000).
  • SCHWAB, D. J., G. A. LANG, K. W. Bedford, and Y. F. P. Chu. Recent developments in the Great Lakes Forecasting System (GLFS). Preprints, Third Conference on Coastal Atmospheric and Oceanic Prediction and Processes, New Orleans, LA, November 3-5, 1999. American Meteorological Society, Boston, MA, pp. 201-206 (1999).
  • Lohrenz, S. E., G. L. FAHNENSTIEL, D. G. Redalje, G. A. LANG, M. J. Dagg, T. E. Whitledge, and Q. Dortch. Nutrients, irradiance, and mixing factors regulating primary production in coastal waters impacted by the Mississippi River plume. Continental Shelf Research 19:1113-1141 (1999).
  • O'CONNOR, W. P., D. J. SCHWAB, and G. A. LANG. Forecast verification for Eta Model winds using Lake Erie storm surge water levels. Weather and Forecasting February 1999:119-133 (1999). https://www.glerl.noaa.gov/pubs/fulltext/1999/19990001.pdf
  • NALEPA, T. F., D. J. HARTSON, D. L. FANSLOW, G. A. LANG, and S. J. Lozano. Declines in benthic macroinvertebrate populations in southern Lake Michigan, 1980-1993. Canadian Journal of Fisheries and Aquatic Sciences 55(11):2402-2413 (1998). https://www.glerl.noaa.gov/pubs/fulltext/1998/19980005.pdf
  • Lohrenz, S. E., FAHNENSTIEL, G. L., Redalje, D. G., LANG, G. A., Chen, X., and Dagg, M. J. Variations in primary production of northern Gulf of Mexico continental shelf waters linked to nutrient inputs from the Mississippi River. Marine Ecology Progress Series 155: 45-54 (1997).
  • CAVALETTO, J.F., T.F. NALEPA, R. Dermott, W.S. GARDNER, M.A. QUIGLEY, and G.A. LANG. Seasonal variation of lipid composition, weight, and length in juvenile Diporeia spp. (Amphipoda) from Lakes Michigan and Ontario. Canadian Journal of Fisheries and Aquatic Sciences 53(9):2044-2051 (1996). https://www.glerl.noaa.gov/pubs/fulltext/1996/19960002.pdf
  • LANG, G.A., and G.L. FAHNENSTIEL. Great Lakes primary production modelmethodology and use. NOAA Technical Memorandum ERL GLERL-90, Great Lakes Environmental Research Laboratory, Ann Arbor, MI (NTIS# PB96-157664/XAB) 15 pp. (1996).
  • NALEPA, T.F., G.L. FAHNENSTIEL, M.J. McCORMICK, T.H. JOHENGEN, G.A. LANG, J.F. CAVALETTO, and G. Goudy. Physical and chemical variables of Saginaw Bay, Lake Huron in 1991-93. NOAA Technical Memorandum ERL GLERL-91, Great Lakes Environmental Research Laboratory, Ann Arbor, MI (NTIS# PB96-182357/XAB) 78 pp. (1996). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-091/tm-091.pdf
  • NALEPA, T.F., D.J. HARTSON, G.W. GOSTENIK, D.L. FANSLOW, and G.A. LANG. Changes in the freshwater mussel community of Lake St. Clair: from Unionidae to Dreissena polymorpha in eight years. Journal of Great Lakes Research 22(2):354-369 (1996). https://www.glerl.noaa.gov/pubs/fulltext/1996/19960005.pdf
  • BRIDGEMAN, T.B., G.L. FAHNENSTIEL, G.A. LANG, and T.F. NALEPA. Zooplankton grazing during the zebra mussel (Dreissena polymorpha) colonization of Saginaw Bay, Lake Huron. Journal of Great Lakes Research 21(4):567-573 (1995). https://www.glerl.noaa.gov/pubs/fulltext/1995/19950016.pdf
  • FAHNENSTIEL, G.L., T.B. BRIDGEMAN, G.A. LANG, M.J. McCORMICK, and T.F. NALEPA. Phytoplankton productivity in Saginaw Bay, Lake Huron: Effects of zebra mussel (Dreissena polymorpha) colonization. Journal of Great Lakes Research 21(4):465-475 (1995). https://www.glerl.noaa.gov/pubs/fulltext/1995/19950010.pdf
  • FAHNENSTIEL, G.L., G.A. LANG, T.F. NALEPA, and T.H. JOHENGEN. Effects of zebra mussel (Dreissena polymorpha) colonization on water quality parameters in Saginaw Bay, Lake Huron. Journal of Great Lakes Research 21(4):435-448 (1995). https://www.glerl.noaa.gov/pubs/fulltext/1995/19950008.pdf
  • FANSLOW, D.L., T.F. NALEPA, and G.A. LANG. Filtration rates of the zebra mussel (Dreissena polymorpha) on natural seston from Saginaw Bay, Lake Huron. Journal of Great Lakes Research 21(4):489-500 (1995). https://www.glerl.noaa.gov/pubs/fulltext/1995/19950011.pdf
  • NALEPA, T.F., J.A. WOJCIK, D.L. FANSLOW, and G.A. LANG. Initial colonization of the zebra mussel (Dreissena polymorpha) in Saginaw Bay: Population recruitment, density, and size structure. Journal of Great Lakes Research 21(4):417-434 (1995). https://www.glerl.noaa.gov/pubs/fulltext/1995/19950007.pdf
  • FAHNENSTIEL, G.L., M.J. McCORMICK, G.A. LANG, D.G. Redalje, S.E. Lohrenz, M. MARKOWITZ, B. WAGONER, and H.J. CARRICK. Taxon-specific growth and loss rates for dominant phytoplankton populations from the northern Gulf of Mexico. Marine Ecology Progress Series 117:229-239 (1995).
  • Lohrenz, S.E., D.G. Redalje, G.L. FAHNENSTIEL, M.J. McCORMICK, G. LANG, K. Prasad, X. Chen, D.A. Arwood, and B. Chen. Phytoplankton rate processes in coastal waters of the northern Gulf of Mexico and relationships to environmental conditions. Proceedings, Nutrient Enhanced Coastal Ocean Productivity Workshop, Baton Rouge, LA, June 26-27, 1994. (1994).
  • Lohrenz, S.E., D.G. Redalje, G.L. FAHNENSTIEL, and G.A. LANG. Regulation and distribution of primary production in the northern Gulf of Mexico. Proceedings, Nutrient Enhanced Coastal Ocean Productivity Workshop, Louisiana Universities Marine Consortium, New Orleans, LA, October, 1-4, 1991. NOAA, Coastal Ocean Program Office, 95-104 (1992).
  • LANG, G.A., and T.D. FONTAINE. Modeling the fate and transport of organic contaminants in Lake St. Clair. Journal of Great Lakes Research 16(2):216-232 (1990). https://www.glerl.noaa.gov/pubs/fulltext/1990/19900004.pdf
  • QUIGLEY, M.A., and G.A. LANG. Measurement of amphipod body length using a digitizer. Hydrobiologia 171:255-259 (1989).
  • LANG, G.A., J.A. MORTON, and T.D. FONTAINE. Total phosphorus budget for Lake St. Clair: 1975-80. Journal of Great Lakes Research 14(3):257-266 (1988). https://www.glerl.noaa.gov/pubs/fulltext/1988/19880006.pdf
  • FAHNENSTIEL, G.L., D. SCAVIA, G.A. LANG, J.H. SAYLOR, G.S. MILLER, and D.J. SCHWAB. Impact of inertial period internal waves on fixed-depth primary production estimates. Journal of Plankton Research 10(1):77-87 (1988).
  • LAIRD, G.A., D. SCAVIA, G.L. FAHNENSTIEL, L.A. STRONG, and G.A. LANG. Dynamics of Lake Michigan phytoplankton: Relationship to nitrogen and silica fluxes. Canadian Journal of Fisheries and Aquatic Sciences 45(8):1459-1466 (1988). https://www.glerl.noaa.gov/pubs/fulltext/1988/19880021.pdf
  • SCAVIA, D., G.A. LANG, and J.F. Kitchell. Dynamics of Lake Michigan plankton: a model evaluation of nutrient loading, competition, and predation. Canadian Journal of Fisheries and Aquatic Sciences 45(1):165-177 (1988). https://www.glerl.noaa.gov/pubs/fulltext/1988/19880022.pdf
  • LAIRD, G.A., D. SCAVIA, G.L. FAHNENSTIEL, L.A. STRONG, J.M. MALCZYK, G.A. LANG, and W.S. GARDNER. Southern Lake Michigan nutrients, temperature, chlorophyll, plankton, and water movement during 1983 and 1984. NOAA Technical Memorandum ERL GLERL-67, Great Lakes Environmental Research Laboratory, Ann Arbor, MI (PB88-148572/XAB) 27 pp. (1987). https://www.glerl.noaa.gov/pubs/tech_reports/glerl-067
  • LANG, G.A., and M.A. QUIGLEY. A method for using a CalComp Digitizer coupled with menu-driven software to measure amphipod body length and gut fullness. NOAA Technical Memorandum ERL GLERL-62, Great Lakes Environmental Research Laboratory, Ann Arbor, MI (PB87-186920/XAB) 18 pp. (1987).
  • LANG, G.A., and D. SCAVIA. Calculation of vertical diffusivity in Lake Washington based on long-term simulation of thermal structure. NOAA Technical Memorandum ERL GLERL-59, Great Lakes Environmental Research Laboratory, Ann Arbor, MI (PB86-205515/XAB) 79 pp. (1986).
  • LANG, G.A. Update of U.S. Great Lakes tributary loadings, 1979-80. NOAA Technical Memorandum ERL GLERL-54, Great Lakes Environmental Research Laboratory, Ann Arbor, MI (PB85-171528/XAB) 41 pp. (1984).
  • CHAPRA, S.C., D. SCAVIA, G.A. LANG, and K.H. Reckhow. Nutrient food chain models. In Engineering Approaches for Lake Management, Vol. 2: Mechanistic Modeling, S.C. Chapra and K.H. Reckhow (eds.). Butterworth Publishers, Boston, MA, 243-351 (1983).
  • LANG, G.A. The Mineral River--A unique tributary chloride load to Lake Superior. Journal of Great Lakes Research 9(4):584-587 (1983). https://www.glerl.noaa.gov/pubs/fulltext/1983/19830004.pdf
  • LANG, G.A., and S.C. CHAPRA. Documentation of SED--A sediment/water column contaminant model. NOAA Technical Memorandum ERL GLERL-41, Great Lakes Environmental Research Laboratory, Ann Arbor, MI (PB83-169946) 49 pp. (1982).

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