title: Scale locality of the energy cascade in magnetohydrodynamics

authors: Nickless, Morganna Sophie

subjects: magnetohydrodynamics

abstract: Turbulence behaves differently in electrically charged fluids, such as plasmas, due to the turbulent motions being accompanied by magnetic field influences. This thesis looks at how the magnetic field in these fluids impacts energy transferred from large scales to small scales—the energy cascade—by analyzing data from numerical simulations of turbulence. We will be following Doan et al's approach of decomposing the fluctuations into large-scale and small-scale contributions using bandpass filtering, then plotting the flux of the energy and enstrophy in 2D and 3D magnetohydrodynamics. This will help quantify various aspects of the energy cascade, including the degree of scale-locality. The results will be compared to those from Doan et al's analysis of non-electrically charged fluids.

text: Scale locality of the energy cascade in magnetohydrodynamics Turbulence behaves differently in electrically charged fluids, such as plasmas, due to the turbulent motions being accompanied by magnetic field influences. This thesis looks at how the magnetic field in these fluids impacts energy transferred from large scales to small scales—the energy cascade—by analyzing data from numerical simulations of turbulence. We will be following Doan et al's approach of decomposing the fluctuations into large-scale and small-scale contributions using bandpass filtering, then plotting the flux of the energy and enstrophy in 2D and 3D magnetohydrodynamics. This will help quantify various aspects of the energy cascade, including the degree of scale-locality. The results will be compared to those from Doan et al's analysis of non-electrically charged fluids.

year: 2024

title: Addressing the climate crisis: An action plan for psychologists (summary)

authors: APA Task Force on Climate Change

abstract: Psychologists have conducted valuable work on the climate crisis and can make even greater contributions to understanding the crisis, mitigating and adapting to climate change, and achieving climate justice. This summary of the report from the American Psychological Association’s (APA) Task Force on Climate Change examines the multiple roles psychologists play in research, practice, education, advocacy, and communications related to the climate crisis and how APA can facilitate expansion of psychologists’ work in these domains. The task force recommends that APA pursue a set of activities that will both (a) strengthen the field by encouraging a larger number of psychologists, across all specializations, to work on climate change, and (b) broaden the impact of psychologists’ work on climate change by supporting their engagement and collaborations with other fields and sectors. Further, the task force offers recommendations for how APA can help mitigate climate change by improving its own energy use and sustainability practices and encouraging improvements by other organizations and the public.

text: Addressing the climate crisis: An action plan for psychologists (summary) Psychologists have conducted valuable work on the climate crisis and can make even greater contributions to understanding the crisis, mitigating and adapting to climate change, and achieving climate justice. This summary of the report from the American Psychological Association’s (APA) Task Force on Climate Change examines the multiple roles psychologists play in research, practice, education, advocacy, and communications related to the climate crisis and how APA can facilitate expansion of psychologists’ work in these domains. The task force recommends that APA pursue a set of activities that will both (a) strengthen the field by encouraging a larger number of psychologists, across all specializations, to work on climate change, and (b) broaden the impact of psychologists’ work on climate change by supporting their engagement and collaborations with other fields and sectors. Further, the task force offers recommendations for how APA can help mitigate climate change by improving its own energy use and sustainability practices and encouraging improvements by other organizations and the public.

year: 2022

title: Polynesian settlement of New Zealand and the impacts of volcanism on early Maori society: An update

authors: Lowe, David J.

subjects: Polynesian settlement

abstract: Presents an overview of the timing of Polynesian settlement in New Zealand, discussing the application of tephrochronology and rat and avian bone dating to the problem. The impacts of volcanism on early Maori society are examined, including the catastrophic impacts of the Tarawera eruption of 1886.

text: Polynesian settlement of New Zealand and the impacts of volcanism on early Maori society: An update Presents an overview of the timing of Polynesian settlement in New Zealand, discussing the application of tephrochronology and rat and avian bone dating to the problem. The impacts of volcanism on early Maori society are examined, including the catastrophic impacts of the Tarawera eruption of 1886.

year: 2008