Jessie Lacy

Research Oceanographer US Geological Survey Pacific Coastal & Marine Science Center Pacific Science Center 400 Natural Bridges Drive Santa Cruz, CA 95060 (831) 460-7520 jlacy@usgs.gov

Research Interests

• Hydrodynamics of the coastal ocean, estuaries, and lakes.
• Lateral dynamics in estuaries with complex topography, and their influence on mixing.
• The dynamics of stratification and baroclinic transport.
• Estimation of bottom roughness, bottom shear stress, and sediment resuspension in wave-dominated environments.
• Interaction between aquatic vegetation and hydrodynamics.

Links

• Turbid Bay: Sediment in Motion
  Video of sediment transport research in the shallows of San Francisco Bay
  
  
• Making Waves and Ripples in a Giant Flume in Japan
  USGS Sound Waves, April 2005
   
• Eelgrass in Puget Sound: A New Study of Flow, Sediment Transport, and Zostera marina
  USGS Sound Waves, September 2004
   
• USGS Pacific Coastal and Marine Science Center
   
• South Bay Salt Pond Restoration Project
   
• Elkhorn Slough Tidal Wetland Plan
   
• Environmental Fluid Mechanics Laboratory, Stanford University

Selected Publications

J.R. Lacy, S. Gladding, A. Brand, A. Collignon, and M.T. Stacey. Lateral baroclinic forcing enhances transport of sediment from shallows to channel in an estuary. In review, Estuaries and Coasts.

D. Buscombe, D.M. Rubin, J.R. Lacy, C.R. Sherwood, C.D. Storlazzi, G.Hatcher, H. Chezar, and R. Wyland. Seabed dynamics on the inner continental shelf: Insights from eighteen months of hourly grain size measurements. In review, Continental Shelf Research.

J.R. Lacy, D. M. Rubin, and D. Buscombe. 2012, Currents, drag, and sediment transport induced by a tsunami. Journal of Geophysical Research 117 (C09028). doi:10.1029/2012JC007954.

A.W. Stevens and J.R. Lacy. 2012. The influence of wave energy and sediment transport on seagrass distribution. Estuaries and Coasts 35, 92–108. doi:10.1007/s12237-011-9435-1.

J.R. Lacy and D.J. Hoover. 2011. Wave exposure of Corte Madera Marsh, Marin County, California: A field investigation. U.S. Geological Survey Open-File Report 2011-1183. http://pubs.usgs.gov/of/2011/1183/.

J. Figurski, D. Malone, J.R. Lacy, and M. Denny. 2011. An inexpensive instrument for measuring wave exposure and water velocity. Limnology and Oceanography: Methods 9, 204–214. doi:10.4319/lom.2011.9.204.

Lacy, Jessica R. and Sandy Wyllie-Echeverria, 2011. The influence of current speed and vegetation density on flow structure in two macrotidal eelgrass canopies. Limnology and Oceanography: Fluids and Environments 1 (2011): 38–55.
http://lofe.dukejournals.org/content/early/2011/02/17/21573698-1152489.full

A. Brand, J.R. Lacy, S. Gladding, D. Hoover, and M.T. Stacey. 2010. Wind-enhanced resuspension in the shallow waters of South San Francisco Bay: Mechanisms and potential implications for cohesive sediment transport. Journal of Geophysical Research 115 (C11024) doi:10.1029/2010JC006172.

A.W. Stevens, J.R. Lacy, D.P. Finlayson, and G. Gelfenbaum. 2008. Evaluation of a single-beam sonar system to map seagrass at two sites in northern Puget Sound, Washington. USGS Scientific Investigations Report 2008-5009.

J.R. Lacy, D.M. Rubin, H. Ikeda, K. Mokodai, and D.M. Hanes. 2007. Bedforms created by simulated waves and currents in a large flume. Journal of Geophysical Research 112 (C10018). doi:10.1029/2006JC003942.

C.R. Sherwood, J.R. Lacy, and G. Voulgaris. 2006. Shear velocity estimates on the inner shelf off Grays Harbor, Washington, USA. Continental Shelf Research 26 (17-18): 1995-2018. doi:10.1016/j.csr.2006.07.025.

J.R. Lacy, C.R. Sherwood, D. Wilson, T. Chisholm, and G. Gelfenbaum. 2005. Estimating hydrodynamic roughness in a wave-dominated environment with a high resolution acoustic Doppler profiler. Journal of Geophysical Research 110 (C06014). doi:10.1029/2003JC001814.

J.R. Lacy and C.R. Sherwood. 2004. Accuracy of a pulse-coherent acoustic Doppler profiler in a wave-dominated flow. Journal of Atmospheric and Oceanic Technology 21 (9): 1448-1461.

J.R. Lacy, M.T. Stacey, J.R. Burau, and S.G. Monismith. 2003. The interaction of lateral baroclinic forcing and turbulence in an estuary. Journal of Geophysical Research 108 (C3), 3089. doi:10.1029/2002JC001392.

J.R. Lacy and S.G. Monismith. 2001. Secondary currents in a curved, stratified, estuarine channel. Journal of Geophysical Research 106 (C12): 31283-31302.

J.R. Lacy, M.T. Stacey, S.G. Monismith, and J.R. Burau. 1997. Stratification and turbulence over a tidal cycle in northern San Francisco Bay. In S.S.Y. Wang and T. Carstes, eds., Proceedings of the 27th IAHR Biennial Congress vol. 1, 1108-1113. New York: American Society of Civil Engineers.

J.R. Lacy, D.H. Schoellhamer, and J.R. Burau. 1996. Suspended-solids flux at a shallow-water site in South San Francisco Bay, California. In C.T. Bathala, ed., Proceedings of the North American Water and Environment Congress, June 23-28, 1996. New York: American Society of Civil Engineers.