Dataset: Grain size and radiometric data from multi-core sediments collected Fall 2017 from the R/V Acadiana in the northwestern Gulf of Mexico to assess Hurricane Harvey impacts

Release Date:2021-12-31Final no updates expectedDOI: 10.26008/1912/bco-dmo.825252.1Version 1 (2021-02-15)Dataset Type:Cruise Results

Principal Investigator: Kanchan Maiti (Louisiana State University)

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


Project: Collaborative Research: A RAPID response to Hurricane Harvey's impacts on coastal carbon cycle, metabolic balance and ocean acidification (HarveyCarbonCycle)


Abstract

Sediments of the northwestern Gulf of Mexico were analyzed for grain size and radiometric data (210-Pb, 234-Th, and 7-Be) to assess Hurricane Harvey impacts.

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Sediments of the northwestern Gulf of Mexico were analyzed for grain size and radiometric data (210Pb, 234Th, and 7Be) to assess Hurricane Harvey impacts. Samples were collected from the Louisiana-Texas shelf in September and October 2017 using the ship R/V Acadiana. Sediment cores were obtained using a multi corer and subsampled at 2 cm depth intervals. 

Sediment core subsamples were dried, homogenized, and subsequently analyzed.  Grain size distribution was determined using laser diffraction after deflocculation in a 0.05% sodium metaphosphate solution, and disaggregation with an ultrasonic probe (Denommee et al., 2016).  Radiometric data (210Pb, 234Th, and 7Be) were obtained using gamma spectroscopy (Maiti et al., 2010).  


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Methods

Denommee, K. C., Bentley, S. J., Harazim, D., & Macquaker, J. H. S. (2016). Hydrodynamic controls on muddy sedimentary-fabric development on the Southwest Louisiana subaqueous delta. Marine Geology, 382, 162–175. doi:10.1016/j.margeo.2016.09.013
Methods

Maiti, K., Carroll, J., & Benitez-Nelson, C. R. (2010). Sedimentation and particle dynamics in the seasonal ice zone of the Barents Sea. Journal of Marine Systems, 79(1-2), 185–198. doi:10.1016/j.jmarsys.2009.09.001