Citation:
Citation_Information:
Originator: Robert Welk
Originator: Zafer Defne
Originator: Neil K. Ganju
Publication_Date: 20200602
Title:
Rate of shoreline change of marsh units in north shore Long Island salt marsh complex, New York
Edition: 1.0
Geospatial_Data_Presentation_Form: Vector Digital Data Set (Polygon)
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9UNOMM8
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.5066/P9UNOMM8
Online_Linkage:
Larger_Work_Citation:
Citation_Information:
Originator: Robert Welk
Originator: Zafer Defne
Originator: Neil Ganju
Publication_Date: 2020
Title: Coastal wetlands of north shore Long Island, New York
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9UNOMM8
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Welk, R., Defne, Z., and Ganju, N.K., 2020, Coastal wetlands of north shore Long Island, New York: U.S. Geological Survey data release,
https://doi.org/10.5066/P9UNOMM8.
Online_Linkage: https://doi.org/10.5066/P9UNOMM8
Online_Linkage:
Description:
Abstract:
This data release contains coastal wetland synthesis products for the geographic region of north shore Long Island, New York. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, mean tidal range, and shoreline change rate are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, the U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands. For this purpose, the response and resilience of coastal wetlands to physical factors need to be assessed in terms of the ensuing change to their vulnerability and ecosystem services.
This dataset displays shoreline change rates for north shore Long Island. Shoreline change rates are based on analysis of digital vector shorelines acquired from historical topographic sheets provided by National Oceanic and Atmospheric Administration (NOAA). Analysis was performed using the Digital Shoreline Analysis System (DSAS), an extension for ArcMap, created by the U.S. Geological Survey. Linear Regression Rates (LRR) and End Point Rates (EPR) of shoreline change were averaged along the shoreline of each salt marsh unit to generate this dataset. LRR rates were used in areas where three or more historical shorelines were available while EPR was used in areas where two were available. Positive and negative values indicate accretion and erosion respectively.
Purpose:
Analysis of shoreline change rates is part of a comprehensive assessment to identify the factors and their weights in determining the vulnerability and resiliency of salt marshes. This polygon dataset facilitates quantifying these rate changes in the north shore Long Island salt marsh complex by summarizing the rate change results over the previously determined conceptual salt marsh unit polygons.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2020
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.7523079
East_Bounding_Coordinate: -72.7695214
North_Bounding_Coordinate: 40.9750166
South_Bounding_Coordinate: 40.7771079
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5e85f188e4b01d50927ef70d
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geospatial datasets
Theme_Keyword: wetland ecosystems
Theme_Keyword: wetland functions
Theme_Keyword: coastal ecosystems
Theme_Keyword: coastal processes
Theme_Keyword: tides (oceanic)
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: shoreline
Theme_Keyword: coastline
Theme_Keyword: accretion
Theme_Keyword: sediment
Theme_Keyword: salt marsh
Theme_Keyword: vegetation
Theme_Keyword: marsh health
Theme_Keyword: estuary
Theme_Keyword: resilience
Theme_Keyword: vulnerability
Theme_Keyword: polygon shapefile
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: inlandWaters
Theme_Keyword: environment
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Atlantic Ocean
Place_Keyword: United States
Place_Keyword: New York
Place_Keyword: Suffolk County
Place_Keyword: Nassau County
Place_Keyword: Long Island Sound
Access_Constraints: None
Use_Constraints:
The shoreline change rates in this dataset are defined for scientific research purposes and should not be used as a sole source of reference for any regulations and policy making. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Robert Welk
Contact_Position: Hydrologic Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 2045 Route 112
City: Coram
State_or_Province: NY
Postal_Code: 11743
Contact_Voice_Telephone: 631-736-0783 x141
Contact_Electronic_Mail_Address: rwelk@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description:
Graphic that shows the shoreline change rate overlaying Esri Map.
Browse_Graphic_File_Type: PNG
Native_Data_Set_Environment:
Environment as of Metadata Creation: Microsoft [Unknown] Version 6.2 (Build 9200); Esri ArcGIS 10.7.1 (Build 11595) Service Pack N/A (Build N/A)