A5010829381- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Climate change and permafrost
- Oceanographic and Atmospheric Processes
- Ocean Waves and Remote Sensing
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Arctic and Russian Policy Studies
- Cryospheric studies and observations
- Wave and Wind Energy Systems
- Wind Energy Research and Development
- Water-Energy-Food Nexus Studies
- Coastal and Marine Dynamics
- Food Industry and Aquatic Biology
- Geology and Paleoclimatology Research
- Tropical and Extratropical Cyclones Research
- Electromagnetic Launch and Propulsion Technology
- Icing and De-icing Technologies
- Climate variability and models
- Meteorological Phenomena and Simulations
- Building Energy and Comfort Optimization
- Plant responses to water stress
- Innovative Energy Harvesting Technologies
- Landslides and related hazards
- Transportation Safety and Impact Analysis
University of Alaska Fairbanks
2012-2024
Woods Hole Oceanographic Institution
2012
University of Alaska System
2010
Eroding permafrost coasts are likely indicators and integrators of changes in the Arctic System as they susceptible to combined effects declining sea ice extent, increases open water duration, more frequent impactful storms, sea-level rise, warming permafrost.However, few observation sites have yet link decadal-scale erosion rates with changing environmental conditions due temporal data gaps.This study fidelity coastal bluff observations using near-annual high spatial resolution (<1 m)...
Abstract. Diminishing sea ice is impacting the wave field across Arctic region. Recent observation- and model-based studies highlight spatiotemporal influence of on offshore climatologies, but effects within nearshore region are still poorly described. This study characterizes climate in central Beaufort Sea coast from 1979 to 2019 by utilizing a hindcast model that uses ERA5 winds, waves, concentrations as input. The spectral SWAN (Simulating Waves Nearshore) calibrated validated based more...
Data from a five-mooring array extending the inner shelf to continental slope in vicinity of Mackenzie Canyon, Beaufort Sea are analyzed elucidate components boundary current system and their variability. The array, part Marine Arctic Ecosystem Study (MARES), was deployed October 2016 September 2017. Four distinct currents were identified: an eastward-directed flow adjacent coast; westward-flowing, surface-intensified centered on outer-shelf; bottom-intensified shelfbreak jet flowing east;...
Abstract Idealized numerical simulations using the Regional Ocean Modeling System demonstrate effects of an immobile landfast ice cover that is frictionally coupled to underice buoyant plume established by river discharge. The discharge rapidly increases and decreases over a 30-day period has maximum 6000 m 3 s −1 . This study examined response 26-km width one encompasses entire shelf width. model setting mimics spring conditions on Alaskan Beaufort Sea (ABS) shelf. In comparison with...
Idealized models and a simple vertically averaged vorticity equation illustrate the effects of an upwelling favorable wind spatially variable landfast ice cover on circulation beneath ice. For case no along‐shore variations in ice, winds seaward edge result vortex squashing leading to (1) large decreases coastal sea levels, (2) cross‐shore level slopes weak (<∼.05 m s −1 ) under‐ice currents flowing upwind, (3) strong downwind jets, (4) offshore transport bottom boundary layers zone. The...
The heat recovery efficiency of ventilation systems utilizing ventilators (HRVs) depends not only on the HRV units themselves but also intake and exhaust ducts that connect to outside environment. However, these are often neglected in loss calculations, as their impact overall is understood and, knowledge authors, a mathematical model for accounts has been published. In this research, was derived validated using real-life data. model-predicted decrease due reasonable agreement (relative...
The northern coast of Alaska is experiencing significant climatic change enhancing hazards from reduced sea ice and increased coastal erosion. This same region home to offshore oil/gas activities. Foggy Island Bay one along the Beaufort Sea with planned development that will need account for changing climate. High water levels impact infrastructure through erosion flooding hazards. In this study, 21 high level events exceeding top 95th percentile were identified at gauge in Prudhoe Bay,...
This paper presents the results of a multifaceted study behavior novel hydrokinetic energy harvester that utilizes vertical oscillations. Unlike traditional rotating turbines used in energy, this particular device fluid structure interactions vortex-induced-vibration and gallop. Due to unique characteristics motion, thorough examination proposed system was conducted via three-pronged approach simulation, emulation, field testing. Using permanent magnet synchronous generator as electrical...
Integration of renewable power sources into grids remains an active research and development area, particularly for less developed energy technologies such as wave converters (WECs). WECs are projected to have strong early market penetration remote communities, which serve natural microgrids. Hence, accurate predictions manage the interactions a WEC array with microgrids is especially important. Recently developed, low-cost measurement buoys allow operational assimilation data at locations...
Abstract. Diminishing sea ice is impacting the wave field across Arctic region. Recent observation and model-based studies highlight spatiotemporal influence of on offshore climatologies, but effects within nearshore region are still poorly described. This study characterizes climate in central Beaufort Sea coast from 1979 to 2019 by utilizing a hindcast model that uses ERA5 winds, waves, concentrations as input. The spectral SWAN calibrated validated based more than 10,000 situ measurements...