Sources and distribution of suspended sediment in northern Chesapeake Bay

Biggs, Robert B.

doi:10.1016/0025-3227(70)90014-9

Cited by 120 publications

(49 citation statements)

References 3 publications

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“…Suspended-sediment data, which includes USGS Fall Line TSS load measurements (Langland and others, 1999), and TSS monitoring data from the bay and tributaries, deals exclusively with particulate material in the water column for a particular time and region. Notable studies of suspended particulates that resulted in sediment budget information include well-known papers by Biggs (1970), Schubel and Carter (1976), and Nichols and others, (1991). Although TSS studies may be of importance to water clarity and the SAV-TSS-light issues discussed earlier in this report, they are not sufficient alone to construct a comprehensive sediment budget.…”

Section: Estuarine Budgetsmentioning

confidence: 99%

“…Second, in one of the few studies to consider the composition of suspended sediments in the bay, Biggs (1970) concluded that skeletal material and organic production contributed 18 and 22 percent, respectively, to suspended matter in the mid-bay. In the northern bay, these values were only 2 percent, being overwhelmed by riverine input from the Susquehanna River.…”

Section: Internal Sources Of Sedimentmentioning

confidence: 99%

“…Building on the work of Ryan (1953), Biggs (1970), and Schubel and Carter (1976), Hobbs and others (1990; compiled data from parallel studies in Maryland others, 1983, 1988) and Virginia (Carron, 1979;Byrne and others, 1982;Hobbs, 1983) and produced maps and tables that quantified net erosion and deposition of sediment throughout the bay. Unlike many other studies based on data from a longitudinal transect, or from a limited study area, this work produced a baywide sediment budget based on 3-dimensional data.…”

Section: Estuarine Budgetsmentioning

confidence: 99%

“…It is recognized that there are areas where data is lacking, including lack of river input monitoring measurements for all tributaries, relatively few below the Fall Line tributary suspended sediment estimates, internal biogenic productivity data are lacking, and oceanic and shoreline inputs are only roughly estimated. Biogenic productivity has been shown to be significant in certain areas of the bay in certain seasons (Biggs, 1970) and needs to be more fully addressed in future studies. These results also may not include the effects of extreme climatic events.…”

Section: Estimates Of Major Sediment Sourcesmentioning

confidence: 99%

“…The shoreline erosion studies of Ibison and others (1990; cited soil scientists in using a bulk density measurement of 1.5 g cc -1 to convert shoreline erosion volumes to mass. Biggs (1970) used mineral grain densities in calculating a sediment budget for the northern Chesapeake Bay, which at 2.65 to 2.72 g cc -1 would overestimate the percentage of sediment derived from fastland shoreline erosion. Direct measurements of dry bulk densities at a number of sites in the Maryland portion of the Chesapeake Bay yielded an average value of 1.5 g cc -1 (Hill and others, oral commun., 2003).…”

Section: Shoreline Erosionmentioning

confidence: 99%

See 4 more Smart Citations

A summary report of sediment processes in Chesapeake Bay and watershed

Langland¹,

Cronin²

2003

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Section: Estuarine Budgetsmentioning

confidence: 99%

Section: Internal Sources Of Sedimentmentioning

confidence: 99%

Section: Estuarine Budgetsmentioning

confidence: 99%

Section: Estimates Of Major Sediment Sourcesmentioning

confidence: 99%

Section: Shoreline Erosionmentioning

confidence: 99%

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A summary report of sediment processes in Chesapeake Bay and watershed

Langland¹,

Cronin²

2003

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River runoff effect on the suspended sediment property in the upper Chesapeake Bay using MODIS observations and ROMS simulations

Liu

Wang

2014

JGR Oceans

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Ocean color data derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) on the satellite Aqua from 2002 to 2012 and simulations from the Regional Ocean Modeling System (ROMS) are used to study the impact of the Susquehanna River discharge on the total suspended sediment (TSS) concentration in the upper Chesapeake Bay. Since the water in the upper Chesapeake Bay is highly turbid, the shortwave infrared (SWIR)-based atmospheric correction algorithm is used for deriving the normalized water-leaving radiance nL w (k) spectra from MODIS-Aqua measurements. nL w (k) spectra are further processed into the diffuse attenuation coefficient at the wavelength of 490 nm K d (490) and TSS. MODIS-Aquaderived monthly TSS concentration in the upper Chesapeake Bay and in situ Susquehanna River discharge data show similar patterns in seasonal variations. The TSS monthly temporal variation in the upper Chesapeake Bay is also found in phase with the monthly averaged river discharge data. Since the Susquehanna River discharge is mainly dominated by a few high discharge events due to winter-spring freshets or tropical storms in each year, the impact of these high discharge events on the upper Chesapeake Bay TSS is investigated. Both MODIS-measured daily TSS images and sediment data derived from ROMS simulations show that the Susquehanna River discharge is the dominant factor for the variations of TSS concentration in the upper Chesapeake Bay. Although the high river discharge event usually lasts for only a few days, its induced high TSS concentration in the upper Chesapeake Bay can sustain for 10-20 days. The elongated TSS rebounding stage is attributed to horizontal advection of slowly settling fine sediment from the Susquehanna River.

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Water column particulate matter: A key contributor to phosphorus regeneration in a coastal eutrophic environment, the Chesapeake Bay

Reardon

McKinley

et al. 2017

JGR Biogeosciences

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Particulate phosphorus (PP) in the water column is an essential component of phosphorus (P) cycling in the Chesapeake Bay because P often limits primary productivity, yet its composition and transformation remain undercharacterized. To understand the mobilization of PP and P sequestration in the water column, we studied seasonal variations in particulate organic and inorganic P species at three sites in the Chesapeake Bay, using chemical extractions, 1‐D (31P) and 2‐D (1H‐31P) NMR spectroscopies, and electron microprobe analyses. Our results suggest that an average of 9% and 50% of water column PP was recycled in shallow and deep sites, respectively, primarily through remineralization of organic P, which was 3 times higher than Fe‐bound P remobilization. P recycling efficiency was highest in the warm and anoxic seasons. Organic P compositions and concentrations responded strongly to seasonal and redox variations: orthophosphate monoesters and diesters, and diester‐to‐monoester ratios (D/M) decreased with depth; both esters and D/M ratios were lower in the anoxic waters in July and September. In contrast, pyrophosphate concentration increased with depth and polyphosphate concentration was high in anoxic seasons. Our analyses suggest the presence of Ca‐phosphate minerals (Ca‐P) in the water column but with concentrations comparable to sediment Ca‐P. It is unclear, however, whether authigenic precipitation occurred in the water column or resuspended from sediments. Overall, these results reveal the dominance of internal P cycling particularly via organic P remineralization and controlling P availability in the water column of the Chesapeake Bay.

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Sources and distribution of suspended sediment in northern Chesapeake Bay

Cited by 120 publications

References 3 publications

A summary report of sediment processes in Chesapeake Bay and watershed

A summary report of sediment processes in Chesapeake Bay and watershed

River runoff effect on the suspended sediment property in the upper Chesapeake Bay using MODIS observations and ROMS simulations

Water column particulate matter: A key contributor to phosphorus regeneration in a coastal eutrophic environment, the Chesapeake Bay

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