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Showing 1 to 20 of 210 for “"Mississippi River"”.
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Differential Sedimentation In A Mississippi River Crevasse Splay
… basin of a crevasse splay in the modern Mississippi River delta are examined, with emphasis on the development of a distributary mouth bar. Simultaneous hydroacoustic and optical measurements on the mouth bar show that the bar conforms to the progradational stage of an existing conceptual …
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Numerical Modeling of River Diversions in the Lower Mississippi River
The presence of man-made levees along the Lower Mississippi River (MR) has significantly reduced the River sediment input to the wetlands and much of the River's sediment is now lost to the Gulf of Mexico. The sediment load in the River has also been decreased by dams and river revetments along the …
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Late Quaternary Mississippi River Incised Valley Fill: Transgressive Depositional Packages
… sea leve lresulted in reentrenchment of the Mississippi River incised valley. Meltwater floods from proglacial lakes incised into older deposits followed by braided fluvial (substratum) aggradation due to reduced carrying capacity after floods followed by meandering fluvial(topstratum …
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Numerical Simulation of Unsteady Hydrodynamics in the Lower Mississippi River
Alterations along the Mississippi River, such as dams and levees, have greatly reduced the amount of freshwater and sediment that reaches the Louisiana coastal area. Several freshwater and sediment diversions have been proposed to combat the associated land loss problem. To aid in this restoration …
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A spatial analysis of phosphorus in the Mississippi River Basin
Phosphorus (P) in rivers and streams in the Mississippi River Basin (MRB) is a contributing nutrient to hypoxia in the Gulf of Mexico and impacts local water quality. Although nitrogen has been extensively studied and attributed to be the main nutrient causing the Gulf hypoxic zone, P has …
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Cahokia's origins: Religion, complexity and ridge-top mortuaries in the Mississippi River Valley
This dissertation contextualizes religion and complexity as it influenced the emergence of the city of Cahokia through an exploration of ridge-top mortuary practices across the three precincts of Cahokia, East St. Louis and St. Louis ca. AD 1050-1200. Through the theoretical lens of relational …
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The Mississippi River Delta Basin and Why We are Failing to Save its Wetlands
Every thousand years or so, when the Mississippi River's sediment load lengthened and blocked the River’s route to the Gulf of Mexico, the mother stream changed course completely, finding a shorter route to the sea. Then, it built a new delta, thus spreading the gift of land creation along a wide …
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The fate and transport of light petroleum hydrocarbons in the Lower Mississippi River Delta
… of light petroleum hydrocarbons in the Lower Mississippi River and other river delta systems are not adequately represented in existing oil spill models. In response, three methods were introduced to include the effects of dynamic annual discharges and variation of shoreline type on shoreline …
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The Cost of Forward Contracting in Mississippi River Barge Freight and CIF NOLA Markets
… to the buyer. For elevators located along the Mississippi River system selling to Gulf export elevators in New Orleans, that mode of grain transportation is most likely river barge. Contracts for barges are bought and sold by grain merchants either directly with barge lines or through private …
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A GIS Approach to Modeling Groundwater Levels in the Mississippi River Valley Alluvial Aquifer
… challenges for the Arkansas Delta region. The Mississippi River Valley Alluvial Aquifer is the uppermost aquifer and features the largest groundwater capacity in the Mississippi Embayment Aquifer System. The Mississippi River Valley Alluvial Aquifer, commonly referred to as the “alluvial …
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Deconstructing the Mississippi River : restoring a continental system through the integration of flexible infrastructure
… ecological scale thinking. This thesis uses the Mississippi River as a case to illustrate how ecological scale thinking can reframe present urban design and planning paradigm. The research aims to answer the following questions: What are the principal causes of the Mississippi River's ecological …
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Utilizing archival data to assess historic changes in flood flow conveyance of the Mississippi River
The assessment of change in river systems requires reference conditions. However, most large navigable waterways in the United States and elsewhere around the world have a wealth of archival data because of past engineering projects and flood control efforts. For example, in the United States, …
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Effects of Hydrological Connectivity on the Benthos of a Large River (Lower Mississippi River, USA)
… effects of hydrological connectivity between the Mississippi River main channel and adjacent secondary channel and floodplain habitats on macroinvertebrate community structure, water chemistry, and sediment makeup and chemistry are analyzed. In river-floodplain systems, connectivity between the …
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Bacterial Assemblages And Microbial Enzyme Activity In The Major Tributaries Of The Lower Mississippi River
… analyses of bacterial assemblages in large rivers. Rivers form important connections between terrestrial land use and marine biogeochemistry and act as conduits for organisms and allochthonous nutrients. Bacteria dominate carbon cycling and nutrient processing in rivers, and therefore can …
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Regionalism and Universality on the Big Muddy: A Trail of Pavilions along the Mississippi River
For over 2,500 miles, the Mississippi passes through distinct regions, each with unique climatic, cultural, geologic, and ecological traits. This thesis proposes a trail of pavilions along the full length of the Mississippi to encourage exploration of the river's diverse settings and cultures. A …
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Small-bodied fish response to Environmental Pool Management in Pool 26 of the Mississippi River
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
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Assemblage characteristics and sampling considerations for aquatic macroinvertebrates inhabiting a lower Mississippi River stone dike
… associated with stone dikes on the Lower Mississippi River and to obtain basic information on assemblage composition, structure, and patterns of distribution over a dike. For study purposes, stone-filled baskets were implanted into a dike near Vicksburg, Mississippi, in February 1979, and …
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Sedimentary Characteristics and Nutrient Sequestration of Embanked Floodplains Along the Lower Mississippi River, Mississippi and Louisiana
<p>The Mississippi River Basin is the largest river basin in North America and the third largest river basin in the world. Most of the corn, soybeans, wheat, cattle, and hogs harvested in the United States come from the Mississippi River Basin and about 58% of the entire drainage basin is …
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