Fine-grained Sedimentation on the Chenier Plain Coast and Inner Continental Shelf, Northern Gulf of Mexico


Book Description

This thesis examines the evolution of a mud-dominated coastal sedimentary system on multiple time scales. Fine-grained systems exhibit different properties and behavior from sandy coasts, and have received relatively little research attention to date. Evidence is presented for shoreline accretion under energetic conditions associated with storms and winter cold fronts. The identification of energetic events as agents of coastal accretion stands in contrast to the traditional assumption that low-energy conditions are required for deposition of fine-grained sediment. Mudflat accretion is proposed to depend upon the presence of an unconsolidated mud sea floor immediately offshore, proximity to a fluvial sediment source, onshore winds, which generate waves that resuspend sediment and advect it shoreward, and a low tidal range. This study constrains the present influence of the Atchafalaya River on stratigraphic evolution of the inner continental shelf in western Louisiana. Sedimentary and acoustic data are used to identify the western limit of the distal Atchafalaya prodelta and to estimate the proportion of Atchafalaya River sediment that accumulates on the inner shelf seaward of Louisiana's chenier plain coast. The results demonstrate a link between sedimentary facies distribution on the inner shelf and patterns of accretion and shoreline retreat on the chenier plain coast.




Biogeochemical Dynamics at Major River-Coastal Interfaces


Book Description

A comprehensive, state-of-the-art synthesis of biogeochemical dynamics and the impact of human alterations at major river-coastal interfaces for advanced students and researchers.







Report to Congress


Book Description







The Coastal Zone


Book Description

This volume on coastal systems and coastal research is in honor of H. Jesse Walker, who has takes his place with the original founders of the present-day Louisiana State University Department of Geography and Anthropology -- Drs. Fred B. Kniffen, Richard J. Russell, Robert C. West, and William G. Haag.Through its coverage of coastal research from theory to applied, from modeling in the lab to measuring in the field, from the varied lessons of managing the human impact on the coast, and from distant Hawaii, to California, to New Jersey, and to the adjacent Gulf of Mexico, the volume replicates in its incomplete fashion the wide-ranging interest and persistent adventure of its honoree.










Habitats and Biota of the Gulf of Mexico: Before the Deepwater Horizon Oil Spill


Book Description

This book is open access under a CC BY-NC 2.5 license. The Gulf of Mexico is an open and dynamic marine ecosystem rich in natural resources but heavily impacted by human activities, including agricultural, industrial, commercial and coastal development. The Gulf of Mexico has been continuously exposed to petroleum hydrocarbons for millions of years from natural oil and gas seeps on the sea floor, and more recently from oil drilling and production activities located in the water near and far from shore. Major accidental oil spills in the Gulf are infrequent; two of the most significant include the Ixtoc I blowout in the Bay of Campeche in 1979 and the Deepwater Horizon Oil Spill in 2010. Unfortunately, baseline assessments of the status of habitats and biota in the Gulf of Mexico before these spills either were not available, or the data had not been systematically compiled in a way that would help scientists assess the potential short-term and long-term effects of such events. This 2-volume series compiles and summarizes thousands of data sets showing the status of habitats and biota in the Gulf of Mexico before the Deepwater Horizon Oil Spill. Volume 1 covers: water and sediment quality and contaminants in the Gulf; natural oil and gas seeps in the Gulf of Mexico; coastal habitats, including flora and fauna and coastal geology; offshore benthos and plankton, with an analysis of current knowledge on energy capture and energy flows in the Gulf; and shellfish and finfish resources that provide the basis for commercial and recreational fisheries.




ASPRS/ACSM/RT 92 Technical Papers


Book Description

"Washington, D.C., August 3-8, 1992"--Covers.