Transit-Oriented Brownfield Redevelopment

Best Poster Award, Department of Economics, Fall 2019Brownfield properties are properties wherein future use is inhibited either by the presence or perceived presence of harmful pollutants. As a consequence, these properties are difficult to develop and prospective developers require sufficient positive incentives in order to be attracted to these projects. To investigate the extent to which public transit can act as an amenity for these properties, this study examines the relationship between commuter rail transit stations and brownfield property redevelopment rates in Mecklenburg County, NC using both a linear probability model and a propensity score matching approach. The analysis results indicate that there is indeed a relationship between light rail and brownfield redevelopment, but the direction of the relationship depends on the analysis technique used.No embargoAcademic Major: Economic

Eruption of magnetic flux ropes during flux emergence

Aims: We investigate the formation of flux ropes in a flux emergence region and their rise into the outer atmosphere of the Sun. Methods: We perform 3D numerical experiments solving the time-dependent and resistive MHD equations. Results: A sub-photospheric twisted flux tube rises from the solar interior and expands into the corona. A flux rope is formed within the expanding field, due to shearing and reconnection of field lines at low atmospheric heights. If the tube emerges into a non-magnetized atmosphere, the flux rope rises, but remains confined inside the expanding magnetized volume. On the contrary, if the expanding tube is allowed to reconnect with a preexisting coronal field, the flux rope experiences a full eruption with a rise profile which is in qualitative agreement with erupting filaments and Coronal Mass Ejections