Jessie Lacy
Research Oceanographer with the USGS Pacific Coastal and Marine Science Center
My research interests include: 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
Science and Products
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Interaction of lateral baroclinic forcing and turbulence in an estuary
Observations of density and velocity in a channel in northern San Francisco Bay show that the onset of vertical density stratification during flood tides is controlled by the balance between the cross-channel baroclinic pressure gradient and vertical mixing due to turbulence. Profiles of velocity, salinity, temperature, and suspended sediment concentration were measured in transects across Suisun
Authors
J.R. Lacy, M.T. Stacey, J.R. Burau, Stephen G. Monismith
Secondary currents in a curved, stratified, estuarine channel
This paper presents a study of secondary circulation in a curved stratified channel in northern San Francisco Bay over a 12.5-hour tidal cycle. Secondary currents were strong at times (varying by up to 35 cm/s from top to bottom) but relatively transient, as the balance between centrifugal and lateral baroclinic forcing changed over time. The short travel time around the bend did not allow a stead
Authors
J.R. Lacy, Stephen G. Monismith
Suspended-solids flux at a shallow-water site in south San Francisco Bay, California
Time series measurements of current velocity and suspended solids-concentration (SSC) made during December 1993 and March 1994 at a shallow-water site in South San Francisco Bay were used to estimate and compare suspended-solids flux during the two periods. In December, the average residual flux at the site was 2.88 g/m/s, to the northeast, whereas in March the average residual flux was four times
Authors
Jessica R. Lacy, David H. Schoellhamer, Jon R. Burau
1994 Annual report: San Francisco Estuary regional monitoring program for trace substances
This is the second Annual Report of the Regional Monitoring Program for Trace Substances (RMP). It describes concentrations of pollutants in water, sediment, and tissue samples of oysters, mussels, and clams at 15 to 24 sampling locations for three discrete sampling events - during the wet season in February, in April during a period of declining Delta outflows, and during the dry season in August
Authors
Bruce Carlyle Thompson, Jay Davis, Margaret Johnston, E. Johnston, Jessica R. Lacy, Kimberly A. Taylor, John W. Hunt, Brian Anderson
Science and Products
Filter Total Items: 14
No Result Found
Filter Total Items: 40
Interaction of lateral baroclinic forcing and turbulence in an estuary
Observations of density and velocity in a channel in northern San Francisco Bay show that the onset of vertical density stratification during flood tides is controlled by the balance between the cross-channel baroclinic pressure gradient and vertical mixing due to turbulence. Profiles of velocity, salinity, temperature, and suspended sediment concentration were measured in transects across Suisun
Authors
J.R. Lacy, M.T. Stacey, J.R. Burau, Stephen G. Monismith
Secondary currents in a curved, stratified, estuarine channel
This paper presents a study of secondary circulation in a curved stratified channel in northern San Francisco Bay over a 12.5-hour tidal cycle. Secondary currents were strong at times (varying by up to 35 cm/s from top to bottom) but relatively transient, as the balance between centrifugal and lateral baroclinic forcing changed over time. The short travel time around the bend did not allow a stead
Authors
J.R. Lacy, Stephen G. Monismith
Suspended-solids flux at a shallow-water site in south San Francisco Bay, California
Time series measurements of current velocity and suspended solids-concentration (SSC) made during December 1993 and March 1994 at a shallow-water site in South San Francisco Bay were used to estimate and compare suspended-solids flux during the two periods. In December, the average residual flux at the site was 2.88 g/m/s, to the northeast, whereas in March the average residual flux was four times
Authors
Jessica R. Lacy, David H. Schoellhamer, Jon R. Burau
1994 Annual report: San Francisco Estuary regional monitoring program for trace substances
This is the second Annual Report of the Regional Monitoring Program for Trace Substances (RMP). It describes concentrations of pollutants in water, sediment, and tissue samples of oysters, mussels, and clams at 15 to 24 sampling locations for three discrete sampling events - during the wet season in February, in April during a period of declining Delta outflows, and during the dry season in August
Authors
Bruce Carlyle Thompson, Jay Davis, Margaret Johnston, E. Johnston, Jessica R. Lacy, Kimberly A. Taylor, John W. Hunt, Brian Anderson