A5001414727- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Tropical and Extratropical Cyclones Research
- Geological formations and processes
- Geology and Paleoclimatology Research
- Water Quality and Resources Studies
- Remote Sensing and LiDAR Applications
- Flood Risk Assessment and Management
- Underwater Acoustics Research
- Coastal and Marine Management
- Aeolian processes and effects
- Marine and fisheries research
- Marine and environmental studies
- Isotope Analysis in Ecology
- Geological Modeling and Analysis
- Hydrology and Sediment Transport Processes
- Geochemistry and Elemental Analysis
- Archaeology and Natural History
- Soil Geostatistics and Mapping
- Landslides and related hazards
- Mercury impact and mitigation studies
- Soil erosion and sediment transport
- Environmental and Sediment Control
- Ocean Waves and Remote Sensing
- Remote Sensing in Agriculture
Pacific Science Center
2005-2024
United States Geological Survey
2007-2024
Pacific Coastal and Marine Science Center
2012-2024
Pacific Island Ecosystems Research Center
2014
United States Department of the Interior
2008
Coastal inundation due to sea level rise (SLR) is projected displace hundreds of millions people worldwide over the next century, creating significant economic, humanitarian, and national-security challenges. However, majority previous efforts characterize potential coastal impacts climate change have focused primarily on long-term SLR with a static tide level, not comprehensively accounted for dynamic physical drivers such as tidal non-linearity, storms, short-term variability, erosion...
Abstract Subtropical coastlines are impacted by both tropical and extratropical cyclones. While may lead to substantial damage coastal communities, it is difficult determine the contribution of cyclones flooding relative that We conduct a large-scale flood hazard impact assessment across subtropical Southeast Atlantic Coast United States, from Virginia Florida, including different hazards. The physics-based hydrodynamic modeling skillfully reproduces water levels based on comprehensive...
Palaseanu-Lovejoy, M.; Danielson, J.; Thatcher, C.; Foxgrover, A.; Barnard, P.; Brock, J., and Young, A., 2016. Automatic delineation of seacliff limits using lidar-derived high-resolution DEMs in Southern California. In: J.C.; Gesch, D.B.; Parrish, C.E.; Rogers, J.N., Wright, C.W. (eds.), Advances Topobathymetric Mapping, Models, Applications. Journal Coastal Research, Special Issue, No. 76, pp. 162–173. Coconut Creek (Florida), ISSN 0749-0208.Seacliff erosion is a serious hazard with...
Due to the effects of climate change over course next century, combination rising sea levels, severe storms, and coastal will threaten sustainability communities, development, ecosystems as we know them today. To clearly identify vulnerabilities develop appropriate adaptation strategies due projected increased levels flooding erosion, managers need local-scale hazards projections using best available science. In collaboration with leading scientists world-wide, USGS designed Coastal Storm...
Since the California Gold Rush of 1849, sediment deposition, erosion, and bathymetry South San Francisco Bay have been altered by both natural processes human activities. Historical hydrographic surveys can be used to assess how this system has evolved over past 150 years. The National Ocean Service (NOS) (formerly United States Coast Geodetic Survey (USCGS), collected five from 1858 1983. Analysis these enables us reconstruct surface bay floor for each time period quantify spatial temporal...
Spatial trends in the shape of profiles South San Francisco Bay (SSFB) tidal flats are examined using bathymetric and lidar data collected 2004 2005. Eigenfunction analysis reveals a dominant mode morphologic variability related to degree convexity or concavity cross-shore profile—indicative (i) depositional, tidally (ii) erosional, wave impacted conditions. Two contrasting areas characteristic shape—north south constriction estuary width located near Dumbarton Bridge—are recognized. This...
This paper is the second of two that describes Coastal Storm Modeling System (CoSMoS) approach for quantifying physical hazards and socio-economic hazard exposure in coastal zones affected by sea-level rise changing storms. The modelling approach, presented Part 1, downscales atmospheric global-scale projections to local scale flood impacts deterministically computing combined rise, waves, storm surges, astronomic tides, fluvial discharges, changes shoreline positions. method demonstrated...
Stanley, J.-D. and Corwin, K.A., 2013. Measuring strata thicknesses in cores to assess recent sediment compaction subsidence of Egypt's Nile Delta coastal margin. Coastal flood risk California is concentrated around urbanized embayments that are protected by infrastructure, such as levees, pumps, walls, which pose a challenge accurate prediction. A capability predict urban flooding at the parcel-scale (individual home or street) from high ocean levels (extreme tides) shown here coupling...
Subtropical coastlines are impacted by both tropical and extratropical cyclones. While may lead to substantial damage coastal communities, it is difficult determine the contribution of cyclones in flooding relative that We conduct a large-scale flood hazard impact assessment across subtropical Southeast Atlantic Coast United States, from Virginia Florida, including different hazards. The physics-based hydrodynamic modeling skillfully reproduces water levels based on comprehensive validation...
Sediment deposition and erosion in South San Francisco Bay from 1956 to 2005 was studied by comparing bathymetric surveys made 1956, 1983, 2005. From the region erosional. In contrast, 1983 2005, depositional. Analysis of subregions defined depth, morphology location revealed similarities behavior during both erosional depositional periods. During entire period study, there net shallows (<1 m depth) on eastern shore bay north Dumbarton Bridge south Bridge. The rates, however, reflected...
Central San Francisco Bay is the hub of a dynamic estuarine system connecting Joaquin and Sacramento River Deltas, Suisun Bay, Pablo to Pacific Ocean South Bay. To understand role that plays in sediment transport throughout system, it necessary first determine historical changes patterns deposition erosion from both natural anthropogenic forces.The extensive hydrographic survey was conducted 1853 by National Service (NOS) (formerly United States Coast Geodetic Survey (USCGS)). From 1894...
The southern edge of San Francisco Bay is surrounded by former salt evaporation ponds, where tidal flow has been restricted since the mid to late 1890s. These ponds are now focus a large wetland restoration project, and accurate measurement current pond bathymetry adjacent mud flats critical planning. Aerial light detection ranging (lidar) become tool for mapping surface elevations, but its accuracy had rarely assessed habitats. We used singlebeam echosounder system we developed surveying...
Abstract Large wood is an integral part of many rivers, often defining river‐corridor morphology and habitat, but its occurrence, magnitude, evolution in a river system are much less well understood than the sedimentary hydraulic components, due to methodological limitations, have seldom previously been mapped substantial detail. We present new method for this, representing advance automated deep‐learning‐based image segmentation. From these maps, we measured large sediment deposits from...
Abstract Coastal change is a complex combination of multi-scale processes (e.g., wave-driven cross-shore and longshore transport; dune, bluff, cliff erosion; overwash; fluvial inlet sediment supply; sea-level-driven recession). Historical coastal recession on open ocean coasts often outpaced by change. However, future expected to increase significantly in tandem with accelerating rates global sea-level rise. Few models transport can resolve the multitude coastal-change at given beach, fewer...
First posted March 7, 2023 For additional information, contact: Director,Water Resources, Earth System Processes DivisionU.S. Geological Survey345 Middlefield RoadMenlo Park, California, 94025 The South Bay Salt Pond Restoration Project (SBSPRP) encompasses over 6,000 hectares of former salt production ponds along the south edge San Francisco and represents largest wetland restoration effort on west coast North America. A series studies associated with Phase 1 (2010–2018) activities that are...
A seamless, 2-meter resolution digital elevation model (DEM) of the north-central California coast has been created from most recent high-resolution bathymetric and topographic datasets available. The DEM extends approximately 150 kilometers along coastline, Half Moon Bay north to Bodega Head. Coverage inland an +20 meters offshore at least 3 nautical mile limit state waters. This report describes procedures construction, details input data sources, provides for download in both ESRI Arc...
First posted January 5, 2012 Revised June 24, 2020 For additional information, contact: Pacific Coastal and Marine Science CenterU.S. Geological Survey2885 Mission StreetSanta Cruz, CA 95060 In 2010, the U.S. Survey (USGS), Center completed three cruises to map bathymetry of main channel shallow intertidal mudflats in southernmost part south San Francisco Bay. The surveys were merged generate comprehensive maps Coyote Creek (from Calaveras Point east railroad bridge) Alviso Slough bay town...
Tidal wetlands in South San Francisco Bay (South Bay) have decreased by over 80% the past 150 years. The California Coastal Conservancy, conjunction with other state and federal agencies, is collaboratively managing an effort to restore approximately 61 km2 (15,100 acres) of commercial salt evaporation ponds mixed intertidal habitat. In order best develop restoration strategies, as well track morphologic change throughout process, a topographic lidar survey was conducted May 2004. collected...