Theresa Fregoso (Former Employee)
Science and Products
Filter Total Items: 15
Bathymetry and acoustic backscatter data of the Sacramento River, from the Feather River to Knights Landing, California in February, 2011 Bathymetry and acoustic backscatter data of the Sacramento River, from the Feather River to Knights Landing, California in February, 2011
On February 1, 2011, the USGS Pacific Coastal and Marine Science Center (PCMSC) team carried out a project using interferometric sidescan sonar to characterize the riverbed and channel banks of a 12 mile reach of the Sacramento River near the town of Knights Landing, California (River Mile 79 through River Mile 91). The project was developed in coordination with David Smith, Engineering...
Gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California Gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California
This data release contains information on gravity cores that were collected by the U.S. Geological Survey in the area of San Pablo Bay and Carquinez Strait, California in 1990, 1991, and 2000. Ten (10) pdf files describe gravity cores that were split, photographed, and imaged by X-rays, and another pdf file contains a core-log legend. In addition, a shapefile (sanpablo_spls.shp) provides...
San Francisco Bay Delta Bathymetric/Topographic digital elevation model (DEM) - 2016 SF Bay Delta DEM 10-m San Francisco Bay Delta Bathymetric/Topographic digital elevation model (DEM) - 2016 SF Bay Delta DEM 10-m
A high-resolution (10-meter per pixel) digital elevation model (DEM) was created for the Sacramento-San Joaquin Delta using both bathymetry and topography data. This DEM is the result of collaborative efforts of the U.S. Geological Survey (USGS) and the California Department of Water Resources (DWR). The base of the DEM is from a 10-m DEM released in 2004 and updated in 2005 (Foxgrover...
Filter Total Items: 18
Burial and exhumation of temperate bedrock reefs as elucidated by repetitive high-resolution sea floor sonar surveys: Spatial patterns and impacts to species' richness and diversity Burial and exhumation of temperate bedrock reefs as elucidated by repetitive high-resolution sea floor sonar surveys: Spatial patterns and impacts to species' richness and diversity
To understand how chronic sediment burial and scour contribute to variation in the structure of algal and invertebrate communities on temperate bedrock reefs, the dynamics of the substrate and communities were monitored at locations that experience sand inundation and adjacent areas that do not. Co-located benthic scuba-transect surveys and high-resolution swath-sonar surveys were...
Authors
Curt D. Storlazzi, Theresa A. Fregoso, Jared D. Figurski, Jan Freiwald, Steve I. Lonhart, David P. Finlayson
Bathymetry and digital elevation models of Coyote Creek and Alviso Slough, South San Francisco Bay, California Bathymetry and digital elevation models of Coyote Creek and Alviso Slough, South San Francisco Bay, California
In 2010, the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center completed three cruises to map the bathymetry of the main channel and shallow intertidal mudflats in the southernmost part of south San Francisco Bay. The three surveys were merged to generate comprehensive maps of Coyote Creek (from Calaveras Point east to the railroad bridge) and Alviso Slough (from...
Authors
Amy C. Foxgrover, David P. Finlayson, Bruce E. Jaffe, Theresa A. Fregoso
Sediment dynamics and the burial and exhumation of bedrock reefs along an emergent coastline as elucidated by repetitive sonar surveys: Northern Monterey Bay, CA Sediment dynamics and the burial and exhumation of bedrock reefs along an emergent coastline as elucidated by repetitive sonar surveys: Northern Monterey Bay, CA
Two high-resolution bathymetric and acoustic backscatter sonar surveys were conducted along the energetic emergent inner shelf of northern Monterey Bay, CA, USA, in the fall of 2005 and the spring of 2006 to determine the impact of winter storm waves, beach erosion, and river floods on biologically-important siliclastic bedrock reef habitats. The surveys extended from water depths of 4 m...
Authors
C. D. Storlazzi, T.A. Fregoso, N.E. Golden, D.P. Finlayson
Estuarine sedimentation, sediment character, and foraminiferal distribution in central San Francisco Bay, California Estuarine sedimentation, sediment character, and foraminiferal distribution in central San Francisco Bay, California
Central San Francisco Bay is the deepest subembayment in the San Francisco Bay estuary and hence has the largest water volume of any of the subembayments. It also has the strongest tidal currents and the coarsest sediment within the estuary. Tidal currents are strongest over the west-central part of central bay and, correspondingly, this area is dominated by sand-size sediment. Much of...
Authors
John L. Chin, Donald L. Woodrow, Mary McGann, Florence L. Wong, Theresa A. Fregoso, Bruce E. Jaffe
Sediment deposition, erosion, and bathymetric change in central San Francisco Bay: 1855-1979 Sediment deposition, erosion, and bathymetric change in central San Francisco Bay: 1855-1979
Central San Francisco Bay is the hub of a dynamic estuarine system connecting the San Joaquin and Sacramento River Deltas, Suisun Bay, and San Pablo Bay to the Pacific Ocean and South San Francisco Bay. To understand the role that Central San Francisco Bay plays in sediment transport throughout the system, it is necessary to first determine historical changes in patterns of sediment...
Authors
Theresa A. Fregoso, Amy C. Foxgrover, Bruce E. Jaffe
Mapping South San Francisco Bay's seabed diversity for use in wetland restoration planning Mapping South San Francisco Bay's seabed diversity for use in wetland restoration planning
In an effort to understand the role of sediment of South San Francisco Bay (South Bay) salt ponds, an acoustic seabed classification was performed with the condition of over two hundred sediment samples. The success of the large-scale tidal wetland restoration of up to 15,000 acres of South Bay partly depends on the ability of the converted ponds to acquire and retain enough sediment to...
Authors
Theresa A. Fregoso, B. Jaffe, G. Rathwell, W. Collins, K. Rhynas, V. Tomlin, S. Sullivan
Science and Products
Filter Total Items: 15
Bathymetry and acoustic backscatter data of the Sacramento River, from the Feather River to Knights Landing, California in February, 2011 Bathymetry and acoustic backscatter data of the Sacramento River, from the Feather River to Knights Landing, California in February, 2011
On February 1, 2011, the USGS Pacific Coastal and Marine Science Center (PCMSC) team carried out a project using interferometric sidescan sonar to characterize the riverbed and channel banks of a 12 mile reach of the Sacramento River near the town of Knights Landing, California (River Mile 79 through River Mile 91). The project was developed in coordination with David Smith, Engineering...
Gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California Gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California
This data release contains information on gravity cores that were collected by the U.S. Geological Survey in the area of San Pablo Bay and Carquinez Strait, California in 1990, 1991, and 2000. Ten (10) pdf files describe gravity cores that were split, photographed, and imaged by X-rays, and another pdf file contains a core-log legend. In addition, a shapefile (sanpablo_spls.shp) provides...
San Francisco Bay Delta Bathymetric/Topographic digital elevation model (DEM) - 2016 SF Bay Delta DEM 10-m San Francisco Bay Delta Bathymetric/Topographic digital elevation model (DEM) - 2016 SF Bay Delta DEM 10-m
A high-resolution (10-meter per pixel) digital elevation model (DEM) was created for the Sacramento-San Joaquin Delta using both bathymetry and topography data. This DEM is the result of collaborative efforts of the U.S. Geological Survey (USGS) and the California Department of Water Resources (DWR). The base of the DEM is from a 10-m DEM released in 2004 and updated in 2005 (Foxgrover...
Filter Total Items: 18
Burial and exhumation of temperate bedrock reefs as elucidated by repetitive high-resolution sea floor sonar surveys: Spatial patterns and impacts to species' richness and diversity Burial and exhumation of temperate bedrock reefs as elucidated by repetitive high-resolution sea floor sonar surveys: Spatial patterns and impacts to species' richness and diversity
To understand how chronic sediment burial and scour contribute to variation in the structure of algal and invertebrate communities on temperate bedrock reefs, the dynamics of the substrate and communities were monitored at locations that experience sand inundation and adjacent areas that do not. Co-located benthic scuba-transect surveys and high-resolution swath-sonar surveys were...
Authors
Curt D. Storlazzi, Theresa A. Fregoso, Jared D. Figurski, Jan Freiwald, Steve I. Lonhart, David P. Finlayson
Bathymetry and digital elevation models of Coyote Creek and Alviso Slough, South San Francisco Bay, California Bathymetry and digital elevation models of Coyote Creek and Alviso Slough, South San Francisco Bay, California
In 2010, the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center completed three cruises to map the bathymetry of the main channel and shallow intertidal mudflats in the southernmost part of south San Francisco Bay. The three surveys were merged to generate comprehensive maps of Coyote Creek (from Calaveras Point east to the railroad bridge) and Alviso Slough (from...
Authors
Amy C. Foxgrover, David P. Finlayson, Bruce E. Jaffe, Theresa A. Fregoso
Sediment dynamics and the burial and exhumation of bedrock reefs along an emergent coastline as elucidated by repetitive sonar surveys: Northern Monterey Bay, CA Sediment dynamics and the burial and exhumation of bedrock reefs along an emergent coastline as elucidated by repetitive sonar surveys: Northern Monterey Bay, CA
Two high-resolution bathymetric and acoustic backscatter sonar surveys were conducted along the energetic emergent inner shelf of northern Monterey Bay, CA, USA, in the fall of 2005 and the spring of 2006 to determine the impact of winter storm waves, beach erosion, and river floods on biologically-important siliclastic bedrock reef habitats. The surveys extended from water depths of 4 m...
Authors
C. D. Storlazzi, T.A. Fregoso, N.E. Golden, D.P. Finlayson
Estuarine sedimentation, sediment character, and foraminiferal distribution in central San Francisco Bay, California Estuarine sedimentation, sediment character, and foraminiferal distribution in central San Francisco Bay, California
Central San Francisco Bay is the deepest subembayment in the San Francisco Bay estuary and hence has the largest water volume of any of the subembayments. It also has the strongest tidal currents and the coarsest sediment within the estuary. Tidal currents are strongest over the west-central part of central bay and, correspondingly, this area is dominated by sand-size sediment. Much of...
Authors
John L. Chin, Donald L. Woodrow, Mary McGann, Florence L. Wong, Theresa A. Fregoso, Bruce E. Jaffe
Sediment deposition, erosion, and bathymetric change in central San Francisco Bay: 1855-1979 Sediment deposition, erosion, and bathymetric change in central San Francisco Bay: 1855-1979
Central San Francisco Bay is the hub of a dynamic estuarine system connecting the San Joaquin and Sacramento River Deltas, Suisun Bay, and San Pablo Bay to the Pacific Ocean and South San Francisco Bay. To understand the role that Central San Francisco Bay plays in sediment transport throughout the system, it is necessary to first determine historical changes in patterns of sediment...
Authors
Theresa A. Fregoso, Amy C. Foxgrover, Bruce E. Jaffe
Mapping South San Francisco Bay's seabed diversity for use in wetland restoration planning Mapping South San Francisco Bay's seabed diversity for use in wetland restoration planning
In an effort to understand the role of sediment of South San Francisco Bay (South Bay) salt ponds, an acoustic seabed classification was performed with the condition of over two hundred sediment samples. The success of the large-scale tidal wetland restoration of up to 15,000 acres of South Bay partly depends on the ability of the converted ponds to acquire and retain enough sediment to...
Authors
Theresa A. Fregoso, B. Jaffe, G. Rathwell, W. Collins, K. Rhynas, V. Tomlin, S. Sullivan