Model data 2017-309-MD

Identifier 2017-309-MD
Location Assateague Island, Maryland and Virginia and Point Pleasant Beach to Ocean City, New Jersey
Summary The Barrier Island and Estuarine Wetland Physical Change Assessment Dataset was created to calibrate and test probability models of barrier island sandline and estuarine shoreline change for study areas in Virginia, Maryland, and New Jersey. The models examined the influence of hydrologic and physical variables related to storm-derived overwash and estuarine shoreline change. Variables were calculated using a transect-based method in a geographic information system (GIS) by creating shoreline-perpendicular lines at regular intervals along the oceanfront shoreline and extrapolating the features from geospatial data, including lidar, bathymetry and aerial imagery. In addition, the dataset provides storm-derived barrier island change for Hurricane Sandy, as well as linear rates of change for long-term sandline and estuarine shorelines. Shoreline rates of change are considered a crucial element in performing change analysis for erosion and accretion studies and for tracking shoreline movement over time. The Digital Shoreline Analysis System (DSAS) is computer software that uses transects as a method to extract shoreline change rates from shorelines at a given interval across a baseline. For this long term analysis, transects were spaced out at a 50-m interval across the baseline and shoreline change rates were calculated for the long-term (1849-2013). The rates of change were joined to the transects to allow for a visual representation of these rates. The elevation, bathymetric depths, wave heights, surge, runup, and total water level (TWL) were calculated for each transect so that the rates of change corresponded with this new data.
Start (port not specified) 1849-01-01
End (port not specified) 2013-09-05
West -75.358892
East -73.920363
North 40.486781
South 37.857255


Crew members
Information specialist(s)
Kathryn Smith
Specialist, Information
Joseph F Terrano
Specialist, Information

Data types and categories

Data category:
Data type: Mathematical (model)

Equipment used

Equipment Usage description Data types Datasets
Simulated data Mathematical (model) 2


Datasets produced in this activity

Dataset name Equipment Description Dataset contact
Assateague_Island_Model_Variables Simulated data Dataset contains hydrologic and physical variables for Assateague Island, Maryland and Virginia. Joseph F Terrano
New_Jersey_Model_Variables Simulated data Dataset contains hydrologic and physical variables for six study areas in New Jersey. Joseph F Terrano


Samples collected during this field activity