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  4. Mean tidal range of marsh units in Chesapeake Bay salt marshes

Mean tidal range of marsh units in Chesapeake Bay salt marshes

Dates

Publication Date

Citation

Ackerman, K.V., Defne, Z., and Ganju, N.K., 2022, Geospatial characterization of salt marshes in Chesapeake Bay: U.S. Geological Survey data release, https://doi.org/10.5066/P997EJYB.

Summary

This data release contains coastal wetland synthesis products for Chesapeake Bay. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. 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 [...]

Contacts

Point of Contact :
Kate V Ackerman
Author :
Kate V Ackerman, Zafer Defne, Neil Kamal Ganju
Data Owner :
Woods Hole Coastal and Marine Science Center
USGS Program :
Coastal and Marine Hazards and Resources Program
Publisher :
United States Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Woods Hole Coastal and Marine Science Center
USGS Mission Area :
Natural Hazards

Attached Files

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MN_CB_Browse.png
“Mean tidal range of Chesapeake Bay marsh units.” 		thumbnail 4.36 MB image/png
Shapefile: mu_MN_CB.zip
mu_MN_CB.xml
Original FGDC Metadata
View 		29.71 KB
mu_MN_CB.cpg 5 Bytes
mu_MN_CB.dbf 3.46 MB
mu_MN_CB.prj 425 Bytes
mu_MN_CB.sbn 439.87 KB
mu_MN_CB.sbx 16.43 KB
mu_MN_CB.shp 289.6 MB
mu_MN_CB.shx 363.04 KB
mu_MN_CB.sld 6.1 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 Chesapeake Bay salt marsh complexes. Mean tidal range, MN, was based on the calculated difference in height between mean high water (MHW) and mean low water (MLW) using the VDatum (v.4.4.1) database (http://vdatum.noaa.gov/).
Mean tidal range of Chesapeake Bay marsh units.
Mean tidal range of Chesapeake Bay marsh units.

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