A5070888792- Radioactive element chemistry and processing
- Radioactive contamination and transfer
- Ocean Acidification Effects and Responses
- Geochemistry and Elemental Analysis
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Radioactivity and Radon Measurements
- Fire effects on ecosystems
- Landslides and related hazards
- Atmospheric and Environmental Gas Dynamics
- Mine drainage and remediation techniques
- Insects and Parasite Interactions
- Entomopathogenic Microorganisms in Pest Control
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Cryospheric studies and observations
- Chemical Synthesis and Characterization
- Geological formations and processes
- Nuclear Materials and Properties
- Occupational Health and Safety Research
- Plant Pathogens and Fungal Diseases
- Nuclear and radioactivity studies
Woods Hole Oceanographic Institution
2017-2021
Marine Biological Laboratory
2015
Dalhousie University
2008
Abstract Recent fire activity throughout Alaska has increased the need to understand postfire impacts on soils and permafrost vulnerability. Our study utilized data modeling from a ecosystem gradient develop mechanistic understanding of short‐ long‐term tundra boreal forest fires soil thermal dynamics. Fires influenced variety factors that altered surface energy budget, moisture, organic‐layer thickness with overall effect increasing temperatures thaw depth. The organic layer its impact...
The Fukushima Dai-ichi Nuclear Power Plants (FDNPPs) accident in 2011 led to an unprecedented release of radionuclides into the environment. Particularly important are 90Sr and 137Cs due their known health detriments long half-lives (T1/2 ≈ 30 y) relative ecological systems. These can be combined with longer-lived 129I = 15.7 My) trace hydrologic, atmospheric, oceanic, geochemical processes. This study seeks evaluate 137Cs, 90Sr, concentrations seawater off coast Japan, reconcile sources...
Amidoxime-based adsorbents have become highly promising for seawater uranium extraction. However, current deployment schemes are stand-alone, intermittent operation systems that significant practical and economic challenges. This paper presents two 1:10 scale prototypes of a Symbiotic Machine Ocean uRanium Extraction (SMORE) which pairs with an existing offshore structure. pairing reduces mooring costs while enabling continuous, autonomous Utilizing shell enclosure to decouple the mechanical...
The EXport Processes in the Ocean from RemoTe Sensing (EXPORTS) program of National Aeronautics and Space Administration focuses on linking remotely sensed properties satellites to mechanisms that control transfer carbon surface waters depth. Here, naturally occurring radionuclide thorium-234 was used as a tracer sinking particle flux. More than 950 234Th measurements were made during August–September 2018 at Station Papa northeast Pacific Ocean. High-resolution vertical sampling enabled...
The EXport Processes in the Ocean from RemoTe Sensing (EXPORTS) program of National Aeronautics and Space Administration focuses on linking remotely sensed properties satellites to mechanisms that control transfer carbon surface waters depth. Here, naturally occurring radionuclide thorium-234 was used as a tracer sinking particle flux. More than 950 234Th measurements were made during August–September 2018 at Station Papa northeast Pacific Ocean. High-resolution vertical sampling enabled...
Decarbonization of anthropogenic activities is progressing too slowly, creating an urgent need to actively remove carbon dioxide (CO2) from our atmosphere if we are prevent the most severe consequences a disrupted climate system. The marine environment offers several potential approaches for sequestering carbon, with iron-enhanced biological productivity being extensively studied. However, past iron addition studies were not primarily aimed at quantifying durability storage, nor did they...
This study aims to evaluate the impact of shell enclosures on uranium uptake amidoxime-based polymeric adsorbents contained within. Researchers have observed that tensile strength adsorbent's polyethylene backbone is degraded after γ-irradiation induce grafting amidoxime ligand. A two-part system was developed decouple mechanical and chemical requirements adsorbent by encapsulating them in a hard, permeable shell. The water flow six designs an unenclosed for control recirculating flume...