Testing

Dataset: Sediment core porewater and particulate measurements from three sites on the Louisiana Shelf sampled during R/V Pelican cruises in August 2021

Preliminary and in progressVersion 1 (2024-12-12)Dataset Type:Cruise Results

Principal Investigator: Shaily Rahman (University of Colorado at Boulder)

Co-Principal Investigator: Jeffrey W. Krause (Dauphin Island Sea Lab)

Scientist: Lindsey R. Lemke (Dauphin Island Sea Lab)

Student: Ryan Roseburrough (Dauphin Island Sea Lab)

Technician: Alison Siersma (Troy University)

BCO-DMO Data Manager: Dana Stuart Gerlach (Woods Hole Oceanographic Institution)


Project: Collaborative Research: Understanding substrate limitation and Lithium and Silicon isotope fractionation during secondary clay formation in marine systems (Marine Secondary Clay Formation)


Abstract

Thirteen days prior to Hurricane Ida’s landfall in Port Fourchon, Louisiana in August 2021, sediment cores were collected at three sites in the topset delta sediment between the Southwest Pass (major Mississippi River distributary) and Cocodrie, LA aboard the R/V Pelican. All sites experienced Category 4 hurricane conditions from Ida with maximum sustained winds of 130 knots (67 m/s). Using a multi-proxy approach, this project analyzed the initial conditions prior to the storm event, and a compa...

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This dataset provides information on initial conditions from topset delta sediment prior to a major storm event. Less than two weeks after this initial sampling, Hurricane Ida made landfall on August 29th, 2021.

A companion project allowed for additional sampling after the event to study important aspects of silica cycling in coastal sediments. For post-storm data, please see related dataset https://www.bco-dmo.org/dataset/915912.


Related Datasets

IsContinuedBy

Dataset: Sediment porewater and particulates of Louisiana Shelf
Lemke, L. R., Roseburrough, R., Rahman, S., Krause, J. W. (2023) Sediment core porewater and particulate measurements from three sites on the Louisiana Shelf sampled during R/V Pelican cruises from December 2021 through August 2022. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-12-11 http://lod.bco-dmo.org/id/dataset/915912

Related Publications

Methods

Brzezinski, M. A., & Nelson, D. M. (1986). A solvent extraction method for the colorimetric determination of nanomolar concentrations of silicic acid in seawater. Marine Chemistry, 19(2), 139–151. doi:10.1016/0304-4203(86)90045-9
Methods

Comeaux, R. S., Allison, M. A., & Bianchi, T. S. (2012). Mangrove expansion in the Gulf of Mexico with climate change: Implications for wetland health and resistance to rising sea levels. Estuarine, Coastal and Shelf Science, 96, 81–95. https://doi.org/10.1016/j.ecss.2011.10.003
Methods

DeMaster, D. J. (1981). The supply and accumulation of silica in the marine environment. Geochimica et Cosmochimica Acta, 45(10), 1715–1732. doi:10.1016/0016-7037(81)90006-5
Methods

Harris, D., Horwáth, W. R., & van Kessel, C. (2001). Acid fumigation of soils to remove carbonates prior to total organic carbon or CARBON-13 isotopic analysis. Soil Science Society of America Journal, 65(6), 1853–1856. doi:10.2136/sssaj2001.1853
Methods

Kemp, E., Roseburrough, R., Elliott, E., & Krause, J. (2021). Spatial Variability of Sediment Amorphous Silica and its Reactivity in a Northern Gulf of Mexico Estuary and Coastal Zone. Gulf and Caribbean Research, 32, SC6–SC11. https://doi.org/10.18785/gcr.3201.14