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Multi-Event Study on the Connection Between Subauroral Polarization Streams and Deep Energetic Particle Injections in the Inner Magnetosphere
Get PDFEnergetic electron flux enhancements for 100s keV energies are often observed at low L shells (L < 4) in the inner magnetosphere during geomagnetic storms. However, protons with similar energies do not penetrate as deeply as electrons. Electric fields from subauroral polarization streams (SAPS) have been proposed as a mechanism to explain the difference between the 100s keV electron and proton behavior by altering the particles' drift paths and allowing electrons to access lower L shells than protons. Although the primary signature of SAPS is a strong radial electric field, there are corresponding westward/eastward azimuthal electric fields on the eastern/western regions of the SAPS that cause inward/outward radial transport and a differential response between the oppositely drifting electrons and protons. We examine three events where SAPS were observed by the Van Allen Probes near the same time and L shell range as 100s keV electron enhancements deep within the inner magnetosphere. The observations demonstrate that 100s keV electrons were progressively transported radially inward and trapped at low L shells that were consistent with the spatial extent of the SAPS electric fields. Proton flux enhancements were limited to <100 keV energies and were only observed temporarily in the SAPS region, indicating that these particles were on open drift paths. The particle observations are consistent with the differential drift paths for electrons and protons predicted by a simple SAPS electric field model, suggesting that SAPS play an important role in 100s keV particle dynamics at low L shells in the inner magnetosphere.PublishedYe
Los Angeles Aqueduct
No full textThis file contains a digital map of the Los Angeles Aqueduct (U.S.A.) in Google Earth KMZ format that was produced as part of The IBT Water Project at Auburn University. The Los Angeles Aqueduct is a complex, “gravity-flow” system constructed in three major phases to transport water from the Owens Valley and Mono Lake area in eastern California to the city of Los Angeles. The First LA Aqueduct (LAA1), completed in 1913, consisted of a combination of canals, pipelines, and tunnels to capture water from the Owens River. The Mono Basin Extension, completed in 1941, extended the route over 100 miles farther up the Owens Valley to capture water from the mountain streams flowing into Mono Lake. The Second LA Aqueduct (LAA2), completed in 1970, branches off the First LA Aqueduct at the Haiwee Reservoir and runs essentially parallel to LAA1 to Los Angeles. This addition essentially doubled the capacity for transporting water to the city. Metadata embedded in the KMZ file include author contact, Creative Commons License information, and list of references. See the project website (URL shortcut: aub.ie/ibtwater) for information about methods, data sources, additional digital IBT maps, Google Earth tips, and a glossary of key terms
An Introduction to Microaggressions for Library Workers
Get PDFThe term “microaggression” was coined to identify subtle occurrences of racism couched in casual comments directed at people of color. At the end of the webinar, participants will be able to:
Better understand how their personal biases may inadvertently lead to harmful mircoaggressions in the workplace, and take actions to be an anti-racist colleague.
Develop bystander intervention strategies against microaggressions
Identify techniques to combat microaggressions in the library as a workplace and within the professio
Skills for success: Tailoring research boot camps to graduate student needs
Get PDFAs they prepare for academic and professional careers, graduate students must acquire skills needed to conduct scholarly research, organize and work with information sources, and effectively communicate research findings. These are skills that are often not addressed by the curricular content of their graduate programs. To help bridge this gap, library faculty at Auburn University organized a one-day research boot camp. Student response to the weekend boot camp has been overwhelmingly positive, and boot camps are now held once each semester. Since February 2019, nearly 1,000 students have attended the boot camps.Ye
Review of Katherine Judith Anderson's Twisted Words, Torture and Liberalism in Imperial Britain
No full textArticle from the George Eliot Review. Digitized and hosted by the George Eliot Review Online, editor Beverley Park Rilett.Publishe
Review of Elaine Auyoung's When Fiction Feels Real: Representation and the Reading Mind
No full textArticle from the George Eliot Review. Digitized and hosted by the George Eliot Review Online, editor Beverley Park Rilett.Publishe
Review of Abbey Theatre's The Undoing of Polly Button, 19/20 February 2022
No full textArticle from the George Eliot Review. Digitized and hosted by the George Eliot Review Online, editor Beverley Park Rilett.Publishe
Optimal Parameter Upscaling for Partial Differential Equation Models in Mathematical Biology
Get PDFPartial differential equation models in mathematical biology often involve space-dependent parameters, such as diffusion coefficients and advection fields, that cannot be measured explicitly and are therefore uncertain. In this work, we compute spatially adaptive, lower-dimensional approximations of these fields, using machine learning tools. Such parsimonious representations of the parameter space would greatly improve the efficiency of the resulting stochastic simulations, allow for more targeted use of reduced order models, and aid in the related design of interventions. Numerical examples demonstrate our theoretical results