Abstract:
To understand sediment deposition in marsh environments, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center (USGS-SPCMSC) selected four study sites in the Grand Bay National Estuarine Research Reserve, Mississippi (GNDNERR). Each site consisted of four plots located along a transect perpendicular to the marsh-estuary shoreline at 5-meter (m) increments (5, 10, 15, and 20 m from the shoreline). Each plot contained four net sedimentation tiles (NST) that were secured flush to the marsh surface using polyvinyl chloride (PVC) pipe. NST are an inexpensive and simple tool to assess short- and long-term deposition that can be deployed in highly dynamic environments without the compaction associated with traditional coring methods. The NST were deployed for three months, measuring quarterly sediment deposition for one year from October 2016 to October 2017. In addition, three NST were deployed at the 10-m plot on October 5th prior to the landfall of Hurricane Nate (October 8, 2017) and retrieved after 12 days, providing measurements of storm deposition. Sediment deposited on the NST were processed to determine physical characteristics, such as deposition thickness, volume, wet weight/dry weight, and organic content (loss-on-ignition [LOI]). When available, additional data collected at each site including water level, elevation, and turbidity data are provided in this data release. Data were collected during Field Activities Numbers (FAN) 2017-303-FA, 2017-315-FA, 2017-333-FA, 2017-346-FA, and 2017-363-FA (also known as subFANs 17CCT01, 17CCT02, 17CCT03, 17CCT04, and 17CCT05, respectively). Additional survey and data details are available from the U.S. Geological Survey Coastal and Marine Geoscience Data System (CMGDS) at,
https://cmgds.marine.usgs.gov/. Please read the full metadata for details on data collection, dataset variables, and data quality.
Purpose:
Net sedimentation tiles (also called sediment plates, tiles, or traps) are an inexpensive tool to assess sediment deposition in coastal zones. Each of the four study sites consisted of four NST plots at 5, 10, 15, and 20m from the shoreline, with four NSTs per distance (total of 16 NSTs per site). Multiple NSTs per distance were used to assess the spatial variation within the marsh and across the shoreline to the marsh interior. The NSTs were collected and redeployed every three months to assess sediment deposition seasonally and over the one-year study period.
Supplemental_Information:
Each field visit was assigned a FAN by the USGS SPCMSC to assist with dataset tracking. Data were collected from each site during quarterly field visits. An additional survey was conducted at the end of the sampling period to measure storm deposition associated with the landfall of Hurricane Nate, on October 8, 2017. This dataset contains data from five field activities: 1) 2017-303-FA (17CCT01), Fall, October 2016 to January 2017, 2) 2017-315-FA (17CCT02), Winter, January 2017 to April 2017, 3) 2017-333-FA (17CCT03), Spring, April 2017 to July 2017, 4) 2017-346-FA (17CCT04), Summer, July 2017 to October 2017, and 5) 2017-363-FA (17CCT05), Hurricane Nate, October 5thto October 18th, 2017. NSTs were deployed on the start date and collected on the end date.
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:dd585ee3-1612-4be1-8158-d43fedf6adfd
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: oceans
Theme_Keyword: geoscientificinformation
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: unconsolidated deposits
Theme_Keyword: geology
Theme_Keyword: geomorphology
Theme_Keyword: coastal processes
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: sediment
Theme_Keyword: net sedimentation tile
Theme_Keyword: NST
Theme_Keyword: sediment plate
Theme_Keyword: physical parameters
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword:
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Theme_Keyword: SPCMSC
Theme_Keyword: deposition
Theme_Keyword: marsh
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Grand Bay National Estuarine Research Reserve
Place_Keyword: NERR
Place:
Place_Keyword_Thesaurus: Common Geographic Areas
Place_Keyword: Alabama
Place_Keyword: Gulf of Mexico
Place_Keyword: United States
Place_Keyword: Mississippi
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: sediment
Stratum_Keyword: surface
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests that it be acknowledged as the originator of this dataset in any future products or research derived from these data. This metadata record should be reviewed in its entirety.
Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other time periods may be inaccurate due to inconsistencies in data collection methods. These data are not legal documents and are not to be used as such.
Environment as of Metadata Creation: Microsoft Windows 10 Version 1709 (Build 16299.431); Esri ArcGIS 10.5.1 (Build 7333) Service Pack N/A (Build N/A)
Citation_Information:
Originator: Joseph F. Terrano
Publication_Date: 2018
Title:
An Evaluation of Marsh Shoreline Erosion and Sediment Deposition in the Grand Bay National Estuarine Research Reserve, Mississippi, USA
Publication_Information:
Publication_Place: Tampa, Florida
Publisher: University of South Florida Scholar Commons
Other_Citation_Details:
Contains detailed process descriptions for NST construction, deployment, collection, and laboratory processing.
Online_Linkage: https://scholarcommons.usf.edu/etd/7371/