An evaluation of mobile mud dynamics in the Mississippi River deltaic region

Corbett, D. Reide; McKee, Brent A.; Duncan, D.

doi:10.1016/j.margeo.2004.05.028

Cited by 119 publications

(92 citation statements)

References 53 publications

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“…These studies highlight the importance of storm remobilization and gravity-driven transport in these subaqueous regions. Using short-lived radionuclides, Corbett et al (2004) showed that river-borne sediment was transported less than ~30 km from the river mouth before initial deposition. However, seasonal variation in 7 Be and 137 Cs suggest that significant remobilization and potential export of sediment out of the Mississippi subaqueous delta occurs during high-energy winter months.…”

Section: Sediment Dispersal In the Coastal Oceanmentioning

confidence: 99%

A comparative study of the flux and fate of the Mississippi and Yangtze river sediments

Yang

2015

Proc. IAHS

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Large rivers play a key role in delivering water and sediment into the global oceans. Large-river deltas and associated coastlines are important interfaces for material fluxes that have a global impact on marine processes. In this study, we compare water and sediment discharge from Mississippi and Yangtze rivers by assessing: (1) temporal variation under varying climatic and anthropogenic impacts, (2) delta response of the declining sediment discharge, and (3) deltaic lobe switching and Holocene sediment dispersal patterns on the adjacent continental shelves. Dam constructions have decreased both rivers' sediment discharge significantly, leading to shoreline retreat along the coast. The sediment dispersal of the river-dominated Mississippi Delta is localized but for the tide-dominated Yangtze Delta is more diffuse and influenced by longshore currents. Sediment declines and relative sea level rises have led to coastal erosion, endangering the coasts of both rivers.

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Section: Sediment Dispersal In the Coastal Oceanmentioning

confidence: 99%

A comparative study of the flux and fate of the Mississippi and Yangtze river sediments

Yang

2015

Proc. IAHS

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“…Surface shelf sediments adjacent to the Mississippi River are homogeneously fine-grained (silts and clays) in the upper meter of the seabed and within the river plume (Abu and Coleman, 1985;Corbett et al, 2004). Mississippi Sound is a protected shallow environment developed by the coast and a barrier island system.…”

Section: Field Samplesmentioning

confidence: 99%

Using MODIS Terra 250 m imagery to map concentrations of total suspended matter in coastal waters

Miller

McKee

2004

Remote Sensing of Environment

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High concentrations of suspended particulate matter in coastal waters directly effect or govern numerous water column and benthic processes. The concentration of suspended sediments derived fiom bottom sediment resuspension or discharge of sediment-laden rivers is highly variable over a wide range of time and space scales. Although there has been considerable effort to use remotely sensed images to provide synoptic maps of suspended particulate matter, there are limited routine applications of this technology due in-part to the low spatial resolution, long revisit period, or cost of most remotely sensed data. In contrast, near daily coverage of medium-resolution data is available from the MODIS Terra instrument without charge from several data distribution gateways. Equally important, several display and processing programs are available that operate on low cost computers. The utility of MODIS 250 m data for analyzing complex coastal waters was examined in the NorthernGulf of Mexico. Using simple processing procedures, MODIS images were used to map the concentration of Total Suspended Matter (TSM). A robust linear relationship was established between band 1 (620 -670 nm) MODIS Terra 250 m data and in situ measurements of TSM (r2 = 0.89; n = 52) acquired during six field campaigns. This study demonstrates that the moderately high resolution of MODIS 250 m data and the operating characteristics of the instrument provide data useful for examining the transport and fate of materials in coastal environments, particularly smaller bodies of water such as bays and estuaries.

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mentioning

confidence: 99%

“…It is responsible for ~66% of the total dissolved organic and inorganic matter transported from the conterminous United States to the ocean (Corbett et al 2004). The Mississippi River is the main factor in shaping the morphology and hydrography of the coastal northern GoM (Corbett et al 2004). During the late Pleistocene, the drainage area of the Mississippi River included meltwater from the Laurentide Ice Sheet, from proglacial lakes like Lake Agassiz and the glacial Great Lakes (Tripsanas et al, 2007).…”

mentioning

confidence: 99%

Mississippi River discharge over the last ~560,000years — Indications from X-ray fluorescence core-scanning

Kujau

Nürnberg

Zielhofer³

et al. 2010

Palaeogeography, Palaeoclimatology, Palaeoecology

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The long term history of terrigenous flux to the Gulf of Mexico via the Mississippi River is hardly known. We here present geochemical and sedimentological data to approximate the varying Mississippi River sediment influx into the northeastern Gulf of Mexico (GoM) over the last six glacial-interglacial cycles (MIS 1 to 14). Our study is based on the IMAGES sediment core MD02-2576 that was recovered from the DeSoto Canyon and is located ~200 km south to the recent Mississippi River delta and ~150 km east of the recent coastline of Florida. Concentrations of siliciclastic elements in bulk sediment samples were estimated from XRF scanning and calibrated by single bulk XRF-analyses. Elemental ratios of the sedimentary record correspond to ratios from the Mississippi River catchment rather than to the core close Alabama and Mobile River catchments. The siliciclastic major element potassium (K) with enhanced surface concentrations in the northwestern Mississippi River catchment shows varying occurrence downcore and here serves as a proxy for Mississippi River sediment discharge variability. Changes in sedimentation rate and magnetic susceptibility further support the variations in Mississippi River influx. Our data were compared with Mississippi River terrestrial archives in the form of loess and terrace deposits that back up our interpretations of enhanced glacial phase Mississippi River influx triggered by strengthened fluvial river runoff and changing fluvial and ice sheet dynamics. Mississippi River influx was at a maximum during glacial MIS 2/3, late MIS 8 and MIS 10. Late glacial MIS 6 deviates from this pattern being a period of reduced Mississippi River influx at the core location, probably due to a westward shift of the Mississippi River delta.

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An evaluation of mobile mud dynamics in the Mississippi River deltaic region

Cited by 119 publications

References 53 publications

A comparative study of the flux and fate of the Mississippi and Yangtze river sediments

A comparative study of the flux and fate of the Mississippi and Yangtze river sediments

Using MODIS Terra 250 m imagery to map concentrations of total suspended matter in coastal waters

Mississippi River discharge over the last ~560,000years — Indications from X-ray fluorescence core-scanning

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