Cold-front-induced flushing of the Louisiana Bays

Feng, Zhixuan; Li, Chunyan

doi:10.1016/j.jmarsys.2010.05.015

Cited by 94 publications

(74 citation statements)

References 23 publications

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“…These stations represented the measurement obtained on 23 February 2010 when the high-pressure system was passing over the bay. Strong winds associated with this system could have potentially mixed the shallow water column and released the CDOM trapped in sediments [10,56,57]. Furthermore, the lower salinities at the marine end member stations indicated the influence of strong wind forcing that could have introduced CDOM from other locations [27].…”

Section: Spatial and Seasonal Assessmentmentioning

confidence: 99%

Seasonal Variation of Colored Dissolved Organic Matter in Barataria Bay, Louisiana, Using Combined Landsat and Field Data

Joshi

D’Sa

2015

Remote Sensing

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Abstract:Coastal bays, such as Barataria Bay, are important transition zones between the terrigenous and marine environments that are also optically complex due to elevated amounts of particulate and dissolved constituents. Monthly field data collected over a period of 15 months in 2010 and 2011 in Barataria Bay were used to develop an empirical band ratio algorithm for the Landsat-5 TM that showed a good correlation with the Colored Dissolved Organic Matter (CDOM) absorption coefficient at 355 nm (ag355) (R 2 = 0.74). Landsatderived CDOM maps generally captured the major details of CDOM distribution and seasonal influences, suggesting the potential use of Landsat imagery to monitor biogeochemistry in coastal water environments. An investigation of the seasonal variation in ag355 conducted using Landsat-derived ag355 as well as field data suggested the strong influence of seasonality in the different regions of the bay with the marine end members (lower bay) experiencing generally low but highly variable ag355 and the freshwater end members (upper bay) experiencing high ag355 with low variability. Barataria Bay experienced a significant increase in ag355 during the freshwater release at the Davis Pond Freshwater Diversion (DPFD) following the Deep Water Horizon oil spill in 2010 and following the Mississippi River (MR) flood conditions in 2011, resulting in a weak linkage to salinity in comparison to the other seasons. Tree based statistical analysis showed the influence of high river flow conditions, high-and low-pressure systems that appeared to control ag355 by ~28%, 29% and 43% of the time duration over the study period at the marine end member just outside the bay. An analysis of CDOM variability in 2010 revealed OPEN ACCESSRemote Sens. 2015, 7 12479 the strong influence of the MR in controlling CDOM abundance in the lower bay during the high flow conditions, while strong winds associated with cold fronts significantly increase CDOM abundance in the upper bay, thus revealing the important role these events play in the CDOM dynamics of the bay.

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Section: Spatial and Seasonal Assessmentmentioning

confidence: 99%

Seasonal Variation of Colored Dissolved Organic Matter in Barataria Bay, Louisiana, Using Combined Landsat and Field Data

Joshi

D’Sa

2015

Remote Sensing

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“…With this setting, it is an area vulnerable to hurricane and winter storm surges. While hurricanes can cause severe damages as we have witnessed in recent years by Hurricanes Katrina (e.g., Pardue et al, 2005;Adams et al, 2007;Stout et al, 2007;Suedel et al, 2007), Rita (e.g., Rego & Li, 2009a, b, 2010a, Gustav, and Ike (Li et al, 2009, the effect of winter storms (cold fronts) cannot be neglected because of the much higher frequency of occurrence and its cumulative effects (e.g., Roberts et al, 1987;Moeller, et al, 1993;Walker & Hammack, 2000;Pepper & Stone, 2004;Feng & Li, 2010). The hydrodynamics can significantly influence the sediment transport (e.g., Cundy et al, 2007) and wetland stability (e.g., Valdemoro et al, 2007).…”

Section: Significance Of Studymentioning

confidence: 99%

Wind surge and saltwater intrusion in Atchafalaya Bay during onshore winds prior to cold front passage

Roberts

Stone

et al. 2010

Hydrobiologia

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“…There are some clear advantages to operating a sediment diversion, both initially and over the long-term, on wintertime river peak flows. The sea surface elevation in the Gulf of Mexico is lowest in the winter, which can facilitate the movement of water out of the basin, thereby reducing residence times and the risk of elevated water levels for extended periods of time [53,54]. Additionally, the first peak of the water year tends to carry the greatest concentration of sand, silt and clay [55] and the highest suspended sediment concentrations occur from November through February, even though the highest sediment loads do not occur until March [38].…”

Section: Geology and Hydrodynamicsmentioning

confidence: 99%

Optimizing Sediment Diversion Operations: Working Group Recommendations for Integrating Complex Ecological and Social Landscape Interactions

Peyronnin

Caffey

Cowan

et al. 2017

Water

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Future conditions of coastal Louisiana are highly uncertain due to the dynamic nature of deltas, climate change, tropical storms, and human reliance on natural resources and ecosystem services. Managing a system in which natural and socio-economic components are highly integrated is inherently difficult. Sediment diversions are a unique restoration tool that would reconnect the Mississippi River to its deltaic plain to build and sustain land. Diversions are innately adaptable as operations can be modified over time. An expert working group was formed to explore how various operational strategies may affect the complex interactions of coastal Louisiana's ecological and social landscape and provide preliminary recommendations for further consideration and research. For example, initial operations should be gradually increased over 5 to 10 years to facilitate the development of a distributary channel network, reduce flood risk potential to communities, limit erosion of adjacent marshes and reduce stress to vegetation and fish and wildlife species. Diversions should operate over winter peaks to capture the highest sediment concentration, reduce vegetation loss while dormant, and reduce detrimental effects to fish and wildlife. Operations during the spring/summer should occur over shorter periods to capture the highest sediment load during the rising limb of the flood peak and minimize impacts to the ecosystem. Operational strategies should strive to build and sustain as much of the coastal landscape as possible while also balancing the ecosystem and community needs.

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Cold-front-induced flushing of the Louisiana Bays

Cited by 94 publications

References 23 publications

Seasonal Variation of Colored Dissolved Organic Matter in Barataria Bay, Louisiana, Using Combined Landsat and Field Data

Seasonal Variation of Colored Dissolved Organic Matter in Barataria Bay, Louisiana, Using Combined Landsat and Field Data

Wind surge and saltwater intrusion in Atchafalaya Bay during onshore winds prior to cold front passage

Optimizing Sediment Diversion Operations: Working Group Recommendations for Integrating Complex Ecological and Social Landscape Interactions

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