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  3. Coastal wetlands of north shore Long Island, New York
  4. Mean tidal range of marsh units in north shore Long Island salt marsh complex, New York

Mean tidal range of marsh units in north shore Long Island salt marsh complex, New York

Dates

Publication Date
Time Period
2020

Citation

Welk, R.J., 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.

Summary

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, and mean tidal range, 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 [...]

Contacts

Point of Contact :
Robert J Welk
Originator :
Robert J Welk, Zafer Defne, Neil Kamal Ganju
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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MN_NSLI_browse.png
“Mean tidal range of marsh units overlaying Esri basemap” 		thumbnail 331.61 KB image/png
Shapefile: mu_MN_NSLI.zip
mu_MN_NSLI.xml
Original FGDC Metadata
View 		26.9 KB
mu_MN_NSLI.cpg 5 Bytes
mu_MN_NSLI.dbf 105.69 KB
mu_MN_NSLI.prj 425 Bytes
mu_MN_NSLI.sbn 13.41 KB
mu_MN_NSLI.sbx 612 Bytes
mu_MN_NSLI.shp 11.97 MB
mu_MN_NSLI.shx 10.92 KB
mu_MN_NSLI.sld 7.73 KB

Purpose

The purpose of this shapefile is to calculate mean tidal range in each marsh unit. Analysis of mean tidal range is part of a comprehensive assessment to identify the factors and their weights in determining the vulnerability and resiliency of salt marshes. Biomass production is positively correlated with mean tidal range in salt marshes along the Atlantic coast of the United States. Recent studies support the idea that enhanced stability of the marshes can be attributed to increased vegetative growth due to increased tidal range. This dataset displays the spatial variation of mean tidal range (i.e. Mean Range of Tides, MN) in the north shore Long Island salt marsh complex. MN was based on the calculated difference in height between mean high water (MHW) and mean low water (MLW) using the VDatum (v3.5) database ( http://vdatum.noaa.gov/ ).
Mean tidal range of marsh units overlaying Esri basemap
Mean tidal range of marsh units overlaying Esri basemap

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