Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

SEDIMENT - GRAIN SIZE collected using a vibracorer from an airboat at a washover deposit near Port Fourchon in Coastal Waters of Louisiana from 2019-08-28 to 2019-08-28 (NCEI Accession 0276483)

Metadata Updated: November 1, 2023

Core 2A was subsampled downcore at various cm-scale intervals. Grain size analysis was conducted using a Beckmann–Coulter laser diffraction particle size analyzer (Model LS 13 320). This analyzer can measure particle sizes ranging from 0.02 to 2000 um, and the method of Xu et al. [2016] was used. About 1 g subsample from each slice was placed in a centrifuge tube, and 10–20 milliliters of 30% hydrogen peroxide was added. The samples were left on a hot plate set to 70 degree C for up to 12 hours to oxidize any organic matter. The samples were then rinsed with deionized water to remove any leftover particles, centrifuged to separate sediment from water, and disaggregated using a Vortex mixer. After that, the samples were placed into the laser analyzer for measurement. The percentages of sand (>63 um; phi < 4), silt (4–63 um; phi is 4–8) and clay ( 8) were determined. Median grain size (D50) was calculated in both um and phi. Depths of core 2A are in cm.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date 2023-07-29T16:30:09Z
Metadata Created Date March 17, 2023
Metadata Updated Date November 1, 2023
Reference Date(s) February 6, 2023 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA/NESDIS/ncei/accessions

Graphic Preview

Preview graphic

Additional Metadata

Resource Type Dataset
Metadata Date 2023-07-29T16:30:09Z
Metadata Created Date March 17, 2023
Metadata Updated Date November 1, 2023
Reference Date(s) February 6, 2023 (publication)
Responsible Party (Point of Contact)
Contact Email
Guid gov.noaa.nodc:0276483
Access Constraints Cite as: Xu, Kehui (2023). SEDIMENT - GRAIN SIZE collected using a vibracorer from an airboat at a washover deposit near Port Fourchon in Coastal Waters of Louisiana from 2019-08-28 to 2019-08-28 (NCEI Accession 0276483). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0276483. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long -90.20981
Bbox North Lat 29.09474
Bbox South Lat 29.09474
Bbox West Long -90.20981
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0276483
Graphic Preview Type PNG
Harvest Object Id be45494e-90eb-4879-893d-6747da67c1ef
Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
Harvest Source Title NOAA/NESDIS/ncei/accessions
Licence accessLevel: Public
Lineage
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Point", "coordinates": [-90.20981, 29.09474]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2019-08-28
Temporal Extent End 2019-08-28

Didn't find what you're looking for? Suggest a dataset here.