A5072284865- Geochemistry and Geologic Mapping
- Planetary Science and Exploration
- Geological and Geochemical Analysis
- Geological Studies and Exploration
- COVID-19 epidemiological studies
- Disaster Response and Management
- Astro and Planetary Science
- Aeolian processes and effects
- Paleontology and Stratigraphy of Fossils
- COVID-19 Pandemic Impacts
- Marine and environmental studies
- Geology and Paleoclimatology Research
University of Washington
2018-2020
Earth and Space Research
2018-2020
Institute for Health Metrics and Evaluation
2020
Abstract We use COVID-19 case and mortality data from 1 February 2020 to 21 September a deterministic SEIR (susceptible, exposed, infectious recovered) compartmental framework model possible trajectories of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections the effects non-pharmaceutical interventions in United States at state level 22 through 28 2021. Using this model, projections critical driving covariates (pneumonia seasonality, mobility, testing rates mask per...
Abstract Atmospheres are dynamic over geologic timescales, making large changes in planetary air density possible. For the Earth, geological proxies suggest that Neoarchean was similar to or lower than today. This variation possibly affected eolian dune grain sizes by controlling trajectories of grains though air. Balancing fall velocity and threshold friction velocity, a metric separating saltation suspension transport, suggests could increase mean size dunes because decreased drag extends...
Abstract Earth’s global barometric pressure, currently 1 bar at sea level, may have changed over its 4.5-billion-year history. Proxy measurements, including N2/36Ar ratios in ~3.5 to 3.0 Ga hydrothermal quartz, ~2.7 raindrop imprints, and vesicle sizes subaerial basalt lava flows indicate Archean air pressure could been between 0.1 1.2 bar. However, some models argue the should much higher than now allow broadening of greenhouse gas absorption lines counteract “Faint Young Sun”. Thus,...