The Variability of High-Frequency Motions and Their Interactions with the Mesoscale on the Mississippi Shelf

In this study, we examine the spatial and temporal variability of high-frequency and low-frequency motions across the Mississippi Shelf and how the high-frequency motions are modulated by low-frequency mesoscale motions. For this purpose, we use Acoustic Doppler Current Profiler (ADCP) measurements collected at nearshore (23 m), mid-shelf (60 m), and shelf break (88 m) stations. High-frequency motions are defined as motions with periods less than 36 hours, whereas mesoscale motions have larger periods. The collected datasets are analyzed through bandpass filtering, least square harmonic analysis, spectral analysis, and empirical orthogonal functions (EOF). We find that along-shelf barotropic mesoscale motions contain the most energy. While weak barotropic tidal motions are present, near-inertial motions with diurnal frequencies constitute a significant fraction of the high-frequency motions. In shallow water, the wind-induced near-inertial motions are found to be suppressed by low-frequency downwelling that destroys or subdues the water column stratification. However, the correlation between mesoscale processes and high-frequency motions is not found at the mid-shelf and shelf break stations

Global Intersections: a History of Women\u27s Liberation in Egypt

The following work investigates the role that colonialism and its modern neocolonial predecessors have played in the oppression of Egyptian women. The work is situated in Kimberle Crenshaw\u27s articulation of intersectional feminist theory, which argues that feminists must investigate the intersections of oppression which augment gender inequality or else risk reinforcing the oppressions which are left unaddressed. The framework for the investigation utilizes feminist sociologist Dorothy Smith\u27s work on relations of the ruling, which are the systems of power and social processes that produce oppression. In order to examine how colonialism and its predecessors influenced women\u27s oppression in Egypt, the thesis provides a historical reading of how colonialism and its predecessors influenced the formation of Egypt\u27s relations of the ruling and, in turn, how these relations impacted women in Egypt. The work begins with Egypt\u27s enmeshment into the British colonial system under the rule of Pasha Muhammad \u27Ali and ends with an overview of the role that the neocolonial capitalist world order played in the Arab Spring and the rise of the violently repressive regime of President Sisi who rules Egypt today

Global Intersections: a History of Women\u27s Liberation in Egypt

The following work investigates the role that colonialism and its modern neocolonial predecessors have played in the oppression of Egyptian women. The work is situated in Kimberle Crenshaw\u27s articulation of intersectional feminist theory, which argues that feminists must investigate the intersections of oppression which augment gender inequality or else risk reinforcing the oppressions which are left unaddressed. The framework for the investigation utilizes feminist sociologist Dorothy Smith\u27s work on relations of the ruling, which are the systems of power and social processes that produce oppression. In order to examine how colonialism and its predecessors influenced women\u27s oppression in Egypt, the thesis provides a historical reading of how colonialism and its predecessors influenced the formation of Egypt\u27s relations of the ruling and, in turn, how these relations impacted women in Egypt. The work begins with Egypt\u27s enmeshment into the British colonial system under the rule of Pasha Muhammad \u27Ali and ends with an overview of the role that the neocolonial capitalist world order played in the Arab Spring and the rise of the violently repressive regime of President Sisi who rules Egypt today

Modulation of Near-Inertial Motions On the Mississippi-Alabama Shelf

In this study, we diagnose the time variability and vertical structure of the high- and low-frequency motions on the Mississippi-Alabama Shelf as observed with a bottom-mounted ADCP (Acoustic Doppler Current Profiler) and CTD (Conductivity-Temperature-Depth). The mooring was deployed about 20 km offshore of Mobile Bay for a period from May 17 to August 23, 2018. At this latitude, the diurnal land and sea breeze has the same frequency as the local inertial frequency. Similar to the wind, the observed high-frequency baroclinic velocities (\u3e 30 cm/s) have a broadband diurnal peak and more energy in the clockwise motions. About 60% of the variance in these motions is due to mode 1, which resembles a two-layer structure with surface and bottom velocities that are 180∘ out of phase. These are all characteristics of wind-driven motions that interact with the coastal wall. The month of June features the best conditions for energetic near-inertial motions: upwelling, consistent sea breeze, and a more continuous instead of a two-layer stratification. This causes near-inertial energy to be also projected on a baroclinic mode 2, featuring a subsurface maximum. This maximum may be attributed to the downward propagation of near-inertial internal wave energy. The observed alongshore low-frequency flows and the up- and downwelling are mostly driven by low-frequency winds. About 83% of the variance in the alongshore low-frequency flows is due to mode 1, which eigenfunction resembles a vertically sheared flow. We find that the amplitude of the near-inertial motions is modulated by the up- and downwelling. During downwelling, the near-inertial baroclinic kinetic energy is greatly reduced because of a reduction in stratification and weaker diurnal winds

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