A5016750004- Oceanographic and Atmospheric Processes
- Tropical and Extratropical Cyclones Research
- Marine and coastal ecosystems
- Coastal and Marine Dynamics
- Marine and fisheries research
- Fish Ecology and Management Studies
- Coastal wetland ecosystem dynamics
- Hydrology and Watershed Management Studies
- Hydrology and Sediment Transport Processes
- Oil Spill Detection and Mitigation
- Ocean Acidification Effects and Responses
- Water Quality and Resources Studies
- Marine Biology and Ecology Research
- Arctic and Antarctic ice dynamics
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Ocean Waves and Remote Sensing
- Soil erosion and sediment transport
- Toxic Organic Pollutants Impact
- Marine and coastal plant biology
- Soil and Water Nutrient Dynamics
- Hydraulic flow and structures
- Marine and environmental studies
- Underwater Acoustics Research
- Groundwater flow and contamination studies
Pacific Northwest National Laboratory
2016-2025
University of Washington
2024
University of Washington Tacoma
2021-2023
Fisheries and Oceans Canada
2012
Battelle
2004-2011
Washington State Department of Ecology
2010
National Technical Information Service
2007-2010
United States Department of Commerce
2007-2010
Office of Scientific and Technical Information
2007-2010
Seattle University
2010
This study used suspect and nontarget screening with high-resolution mass spectrometry to characterize the occurrence of contaminants emerging concern (CECs) in nearshore marine environment Puget Sound (WA). In total, 87 non-polymeric CECs were identified; those confirmed reference standards (45) included pharmaceuticals, herbicides, vehicle-related compounds, plasticizers, flame retardants. Eight polyfluoroalkyl substances detected; perfluorooctanesulfonic acid (PFOS) concentrations as high...
The Pacific Northwest National Laboratory (PNNL) is evaluating the performance of adsorption materials to extract uranium from natural seawater. Testing consists measurements and other elements seawater as a function time using flow-through columns recirculating flume determine adsorbent capacity kinetics. amidoxime-based polymer AF1, produced by Oak Ridge (ORNL), had 56-day 3.9 ± 0.2 g U/kg material, saturation 5.4 half-saturation 23 2 days. ORNL AF1 has very high affinity for uranium,...
Abstract Given annual occurrences of hypoxia, harmful algal blooms, and evidence coastal acidification, the potential impacts climate change on water quality are increasing concern in U.S. Pacific Northwest estuaries such as Salish Sea. While large‐scale global projections well documented, our understanding nearshore estuarine‐scale response is not developed. In this study, future within Sea fjord‐like environment was examined using Model driven by downscaled outputs from National Center for...
Abstract Increasing levels of nutrients, persistent hypoxia, harmful algal blooms, and increased frequency fish kills are degrading the ecological health Salish Sea. An improved version a diagnostic hydrodynamic biogeochemical model (nutrients, phytoplankton, carbon, dissolved oxygen, pH) Sea has been developed with ability to simulate characteristic circulation water quality features. Sensitivity tests were conducted assess responsiveness system land‐based (rivers wastewater sources)...
Nutrient pollution from rivers, nonpoint source runoff, and nearly 100 wastewater discharges is a potential threat to the ecological health of Puget Sound with evidence hypoxia in some basins. However, relative contributions loads entering natural anthropogenic sources, effects exchange flow Pacific Ocean are not well understood. Development quantitative model thus presented help improve our understanding annual biogeochemical cycles this system using unstructured grid Finite-Volume Coastal...
Effects and impacts of the Northeast Pacific marine heatwave 2014–2016 on inner coastal estuarine waters Salish Sea were examined using a combination monitoring data an established three-dimensional hydrodynamic biogeochemical model region. The anomalous high temperatures reached U.S. Northwest continental shelf toward end 2014 primarily entered through existing strong exchange. Elevated up to + 2.3°C observed at stations throughout 2015 2016 relative 2013 before dissipating in 2017....
Enewetak Atoll underwent 43 historical nuclear tests from 1948 to 1958, including the first hydrogen bomb test, resulting in a substantial material fallout contaminating and lagoon waters. The radionuclide deposited sediments soil on islands will remain for decades come. With intensifying climate extreme weather events, possibility of redistribution has become great concern. This study uses numerical modeling approach estimate potential elevated concentrations that can be distributed during...
While ocean acidification was first investigated as a global phenomenon, coastal has received significant attention in recent years, its impacts have been felt by different socio-economic sectors (e.g., high mortality of shellfish larvae aquaculture farms). As region that connects land and ocean, the Salish Sea (consisting Puget Sound Straits Juan de Fuca Georgia) receives inputs from many sources (rivers, wastewater treatment plants, industrial waste facilities, etc.), making these waters...
A theory for determining the dynamic effect of intense rain on water waves is established, based momentum exchange. The takes into account intensity, angle incidence and fall velocity, wave amplitude, frequency depth. It found that induces a uniform increase pressure in column mass transport thin boundary layer affected by also fluctuating shear stress free surface. For vertical or near rainfall, these surface forces are responsible non-negligible amplitude decay, particularly high range. In...
A three-dimensional Reynolds-averaged Navier–Stokes computational fluid dynamics (CFD) model is developed for simulating initial mixing in the near field of thermal discharges at real-life geometrical configurations. The domain decomposition method with multilevel embedded overset grids employed to handle complexity diffusers as well efficiently account large disparity length scales arising from relative size ambient river reach and typical diffuser diameter. An algebraic a Richardson-number...
Introduction In temperate regions, one of the most critical determinants present range-wide genetic diversity was Pleistocene climate oscillations, recent created by last glacial maximum (LGM). This study aimed to describe N. luetkeana structure across its entire range (Alaska California) and test different models population connectivity within Salish Sea. region colonized after LGM has been under increased disturbance in decades. Methods We utilized microsatellite markers at 53 sites range....
The Snohomish River is one of the largest rivers to discharge into Puget Sound estuarine system. tidal circulation, mixing and salt intrusion processes in estuary are complex due presence a large intertidal region, multiple distributary channels, sharp gradient bottom elevation from fjordal depths Sound. To accurately simulate such system, high-resolution model grid both horizontal vertical directions required represent details geometry bathymetry changes study domain. In this paper, finite...