Online Links:
Online Links:
Range of values | |
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Minimum: | 1 |
Maximum: | 205 |
Range of values | |
---|---|
Minimum: | 4799.999497786014 |
Maximum: | 4799.999638073829 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 5391.0 |
Maximum: | 5599.0 |
Range of values | |
---|---|
Minimum: | 160001 |
Maximum: | 160205 |
Range of values | |
---|---|
Minimum: | 0.34 |
Maximum: | 0.34 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 0 |
Maximum: | 13009 |
Range of values | |
---|---|
Minimum: | 430232.79 |
Maximum: | 434713.82 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 4127825.43 |
Maximum: | 4133440.69 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -75.78718 |
Maximum: | -75.737076 |
Units: | decimal degrees |
Range of values | |
---|---|
Minimum: | 37.29447 |
Maximum: | 37.345354 |
Units: | decimal degrees |
Range of values | |
---|---|
Minimum: | 0.0 |
Maximum: | 959.4 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -633.9 |
Maximum: | 861.4 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -311.1 |
Maximum: | 837.5 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -231.4 |
Maximum: | 849.6 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -99999 |
Maximum: | -99999 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -1.63 |
Maximum: | 4.12 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 0.0046 |
Maximum: | 29.1421 |
Units: | percent |
Range of values | |
---|---|
Minimum: | -1.97 |
Maximum: | 3.78 |
Units: | meters |
Value | Definition |
---|---|
1 | Beach. The relatively thick and temporary accumulation of loose, water-borne material (usually well-sorted sand and pebbles, accompanied by mud, cobbles, boulders, and smoothed rock and shell fragments) that is in active transit along, or deposited on, the shore zone between the limits of low water and high water (Neuendorf and others, 2011). In this study, the beach geomorphic setting occurred between the ocean- or sound-side study area boundary and the mean high-water line (approximated for by the upper-most wrack line in the field). |
2 | Backshore. The upper, usually dry, zone of the shore or beach, lying between the high-water line of mean spring tides and the upper limit of shore-zone processes; it is acted upon by waves or covered by water only during exceptionally severe storms or unusually high tides (Neuendorf and others, 2011). In this study, the Backshore geomorphic setting occurred between the mean high-water line and either (i) the dune toe, (ii) the edge of developed areas, or (iii) the edge of dense vegetation (or forest). |
3 | Dunes. A low mound, ridge, bank, or hill of loose, windblown granular material (generally sand), either bare or covered by vegetation, capable of movement from place to place but retaining its characteristic shape (Neuendorf and others, 2011). In this study, “dune” also describes low-lying areas between dunes (or “interdune” regions) that are part of the larger dune complex. |
4 | Washover. A fan of material deposited from the ocean landward on a mainland beach or barrier island, produced by storm waves breaking over low parts of the mainland beach or barrier and depositing sediment either landward (mainland beaches) or across a barrier island into the bay/sound (barrier islands). A washover typically displays a characteristic fan-like shape (Neuendorf and others, 2011). |
5 | Barrier Interior. In this study, the Barrier Interior geomorphic setting described all areas spanning the interior boundary of the dunes (or backshore in the absence of dunes) on the ocean-side to the interior boundary of the marsh, dunes, or backshore on the back-barrier side. This setting was typically used to describe areas that did not fall into any other geomorphic setting (e.g., washovers, ridge/swale complexes). |
6 | Marsh. A relatively flat, low-lying, intermittently water-covered area with generally halophytic grasses existing landward of a barrier island (Neuendorf and others, 2011). |
7 | Ridge/Swale complex: Long subparallel ridges and swales aligned obliquely across the regional trend of the contours (Neuendorf and others, 2011). |
-99999 | Missing value. |
Value | Definition |
---|---|
1000 | Sand or Mud/Peat: In this study, wet, sandy substrates could not be differentiated from mud/peat in marshy areas. Therefore, we identified substrate as being either of these two types in the Substrate raster layer. Mud/Peat is a sticky, fine-grained, predominantly clay- or silt-sized marine detrital sediment (Neuendorf and others, 2011). Sand included rock or mineral grains with diameters between 0.074 and 4.76 mm (Neuendorf and others, 2011). |
1111 | Sand: predominantly sandy substrates that contain rock or mineral grains with diameters between 0.074 and 4.76 mm (Neuendorf and others, 2011) with no discernible shell fragments or large rock fragments. |
2222 | Shell/Gravel/Cobble: substrates containing a mixture of sand, shell or rock fragments, or large rocks. |
3333 | MudPeat: A sticky, fine-grained, predominantly clay- or silt-sized marine detrital sediment (Neuendorf and others, 2011). |
4444 | Water: Any location that (i) is always submerged (e.g., locations several meters into the ocean, bay, or inland water body), (ii) was submerged at the time aerial imagery was captured (i.e., intertidal regions of beaches), or (iii) was not submerged at the time aerial imagery was captured but was outside of the shoreline polygon. |
6666 | Development: Any location that fell within areas obviously influenced by anthropogenic activities (e.g., housing developments, paved roads or parking lots, recreational sports fields, etc.). |
{1111, 2222} | Sand or ShellGravelCobble: Substrate is either predominantly sand or a mix of sand with shell or rock fragments. Sand included rock or mineral grains with diameters between 0.074 and 4.76 mm (Neuendorf and others, 2011) with no discernible shell fragments or large rock fragments. ShellGravelCobble described substrates containing a mixture of sand, shell or rock fragments, or large rocks. |
{1111, 3333} | Sand or Mud/Peat: In this study, wet, sandy substrates could not be differentiated from mud/peat in marshy areas. Therefore, we identified substrate as being either of these two types in the Substrate raster layer. Mud/Peat is a sticky, fine-grained, predominantly clay- or silt-sized marine detrital sediment (Neuendorf and others, 2011). Sand included rock or mineral grains with diameters between 0.074 and 4.76 mm (Neuendorf and others, 2011). |
-99999 | Unknown: Substrate type could not be determined based on aerial imagery |
Value | Definition |
---|---|
111 | None: Areas lacking terrestrial vegetation of any type. Such areas were most frequently associated with the beach geomorphic setting (found seaward of the study area shoreline) assumed to be covered by water. |
222 | Sparse: areas where vegetation was apparent and covered less than 20% of the 5x5-m raster cell. |
333 | Moderate: areas where vegetation appeared to cover 20–90% of the 5x5-m raster cell. |
444 | Dense: areas where vegetation appeared to cover greater than 90% of the 5x5-m raster cell. |
555 | Development: In this study, we selected development as the vegetation density for any location that fell within areas obviously influenced by anthropogenic activities (e.g., housing developments, paved roads or parking lots, recreational sports fields, etc.). |
{111, 222} | None or Sparse: The given location either appeared to lack vegetation completely in the aerial imagery or, if vegetation was apparent, covered less than 20% of the approximately 5 x 5 m area designated by the transect point. |
{222, 333} | Sparse or Moderate: In this study, areas with sparse vegetation could not consistently be differentiated from areas containing moderate vegetation in the orthoimagery alone. Therefore, we identified vegetation as being either of these two types in the Vegetation Density raster layer. Areas described as having 'Sparse' vegetation appeared to have vegetation that covered less than 20% of the 5x5-m raster cell. In areas described as 'Moderate', vegetation appeared to cover 20-90% of the 5x5-m raster cell. |
{333, 444} | Moderate or Dense: The given location either appeared to have vegetation covering 20-90% or >90% of the approximately 5 x 5 m area designated by the transect point. |
-99999 | Unknown: Vegetation density could not be determined based on the aerial imagery |
Value | Definition |
---|---|
11 | None: Areas lacking terrestrial vegetation of any type. Such areas were associated with the beach geomorphic setting (found seaward of the study area shoreline) assumed to be covered by water. |
22 | Herbaceous: areas containing primarily herbaceous vegetation of the forb/herb growth habit (USDA, 2015) and lacking shrubs, trees, or any other vegetation with woody stems (Neuendorf and others, 2011). In this study, the Herbaceous vegetation type typically described the vegetation cover found in Godfrey’s (1976) (i) ‘grassland’ ecological zone along the backshore and dunes, dominated by beach grasses (e.g., Ammophila breviligulata) or (ii) ‘intertidal marsh’ ecological zone dominated by cordgrass (e.g., Spartina patens). |
33 | Shrub: Areas containing low (less than 5 m height), multi-stemmed woody plants of the subshrub or shrub growth habits (USDA, 2015). In this study, the Shrub vegetation type typically described vegetation cover found in Godfrey’s (1976) heath-like ‘shrublands’ ecological zone in stable dune systems. |
44 | Forest: Areas containing trees and tall (> 5 m) shrubs of the tree growth habit (USDA, 2015). In this study, the Forest vegetation type typically described vegetation cover found in Godfrey’s (1976) ‘woodlands–forests’ ecological zone found in barrier island interiors and dominated by deciduous (e.g., Quercus velutina), pine (e.g., Pinus rigida), and juniper (e.g., Juniperus virginiana) species. |
55 | Development: Located within areas obviously influenced by anthropogenic activities (e.g., housing developments, paved roads or parking lots, recreational sports fields, etc.). |
{11, 22} | None or Herbaceous: The given location either lacked vegetation or contained primarily herbaceous vegetation of the forb/herb growth habit (USDA, 2015). In this study, the herbaceous vegetation type typically described the vegetation cover found in Godfrey’s (1976) (i) ‘grassland’ ecological zone along the backshore and dunes, dominated by beach grasses (e.g., Ammophila breviligulata) or (ii) ‘intertidal marsh’ ecological zone dominated by cordgrass (e.g., Spartina patens). |
{22, 33} | Herbaceous or Shrub: The given location either contained primarily herbaceous vegetation of the forb/herb growth habit or low (less than 5 m height), multi-stemmed woody plants of the subshrub or shrub growth habits (USDA, 2015). In this study, the herbaceous vegetation type typically described the vegetation cover found in Godfrey’s (1976) (i) ‘grassland’ ecological zone along the backshore and dunes, dominated by beach grasses (e.g., Ammophila breviligulata) or (ii) ‘intertidal marsh’ ecological zone dominated by cordgrass (e.g., Spartina patens). The shrub vegetation type typically described vegetation cover found in Godfrey’s (1976) heath-like ‘shrublands’ ecological zone in stable dune systems. |
{33, 44} | Shrub or Forest: The given location contained either tall (greater than 5 m height) multi-stemmed woody plants of the shrub growth habit or plants of the tree growth habit (USDA, 2015). In this study, the shrub vegetation type typically described vegetation cover found in Godfrey’s (1976) heath-like ‘shrublands’ ecological zone in stable dune systems. The forest vegetation type typically described vegetation cover found in Godfrey’s (1976) ‘woodlands–forests’ ecological zone found in barrier island interiors and dominated by deciduous (e.g., Quercus velutina), pine (e.g., Pinus rigida), and juniper (e.g., Juniperus virginiana) species. |
-99999 | Unknown: Vegetation type could not be determined based on aerial imagery |
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 205 |
Range of values | |
---|---|
Minimum: | 5391 |
Maximum: | 5599 |
Range of values | |
---|---|
Minimum: | 160001 |
Maximum: | 160205 |
Range of values | |
---|---|
Minimum: | 307.7 |
Maximum: | 307.7 |
Units: | degrees |
Range of values | |
---|---|
Minimum: | -4.88 |
Maximum: | 0.96 |
Units: | meters/year |
Range of values | |
---|---|
Minimum: | 430430.5 |
Maximum: | 434713.82 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 4127825.43 |
Maximum: | 4133324.41 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -0.1919 |
Maximum: | -0.0077 |
Units: | percent |
Range of values | |
---|---|
Minimum: | 430669.48 |
Maximum: | 433833.55 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 4127968.91 |
Maximum: | 4131465.75 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 1.01 |
Maximum: | 1.93 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 0.67 |
Maximum: | 1.59 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 430668.77 |
Maximum: | 433838.4 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 4127968.16 |
Maximum: | 4131472.01 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 430292.35 |
Maximum: | 434690.53 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 4127914.19 |
Maximum: | 4133362.65 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 1.1 |
Maximum: | 2.99 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 0.76 |
Maximum: | 2.65 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 430292.16 |
Maximum: | 434689.41 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 4127913.71 |
Maximum: | 4133362.88 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -99999 |
Maximum: | -99999 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -99999 |
Maximum: | -99999 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -99999 |
Maximum: | -99999 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -99999 |
Maximum: | -99999 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 7.4 |
Maximum: | 311.1 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 2.8 |
Maximum: | 231.4 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -99999 |
Maximum: | -99999 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 112.3 |
Maximum: | 3877.2 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 146.2 |
Maximum: | 861.4 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 152.6 |
Maximum: | 861.4 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 152.6 |
Maximum: | 961.9 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 2.8 |
Maximum: | 311.1 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 0.67 |
Maximum: | 1.86 |
Units: | meters |
Value | Definition |
---|---|
-99999 | No feature available to calculate beach width. |
DL | Dune toe. |
DH | Dune crest. |
Arm | Shorefront armoring used in place of dune toe to calculate beach width. |
Range of values | |
---|---|
Minimum: | -0.22 |
Maximum: | 1.06 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 0.8 |
Maximum: | 3.78 |
Units: | meters |
Value | Definition |
---|---|
111 | Denotes no constructed features. |
222 | Denotes presence of soft approaches (sand fencing, geotubes). |
333 | Denotes presence of hard approaches (rip rap, seawall, jetty, groyne). |
444 | Denotes presence of hard and soft approaches. |
Value | Definition |
---|---|
111 | Denotes no human development. |
222 | Denotes light development: the presence of a road, paved or unpaved, and the occasional structure. |
333 | Denotes moderate development: the presence of more extensive roads and/or buildings along a transect. |
444 | Denotes heavy development: a high density of paved surfaces, houses, or buildings along a transect. |
Value | Definition |
---|---|
111 | Denotes no nourishment. |
222 | Denotes occasional nourishment. |
333 | Denotes frequent nourishment. |
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 205 |
Units: | integer |
Range of values | |
---|---|
Minimum: | 9378 |
Maximum: | 15090 |
Units: | count |
Range of values | |
---|---|
Minimum: | 2.8 |
Maximum: | 311.1 |
Units: | meters |
Online Links:
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Access_Constraints | none |
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Use_Constraints | Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. |
Data format: | This dataset contains 5-m point data as a comma-separated values (CSV) table (6 MB), a polyline shapefile (0.04 MB), and a 16-bit GeoTIFF of beach width (4.7 MB). The GeoTIFF and its values attribute table must be stored together. Also included are the Jupyter notebook used for processing, the CSDGM metadata, and the browse graphic. in format CSV (version ArcGIS Pro 2.0) comma-separated values table Size: 10 |
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Network links: |
https://www.sciencebase.gov/catalog/item/5daa37aae4b09fd3b0c9ceb3 https://www.sciencebase.gov/catalog/file/get/5daa37aae4b09fd3b0c9ceb3 https://doi.org/10.5066/P9V7F6UX |
Data format: | This dataset contains 5-m point data as a comma-separated values (CSV) table (6 MB), a polyline shapefile (0.04 MB), and a 16-bit GeoTIFF of beach width (4.7 MB). The GeoTIFF and its values attribute table must be stored together. Also included are the Jupyter notebook used for processing, the CSDGM metadata, and the browse graphic. in format GeoTIFF (version ArcGIS Pro 2.0) GeoTIFF Size: 17.4 |
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Network links: |
*** *** *** |
Data format: | This dataset contains 5-m point data as a comma-separated values (CSV) table (6 MB), a polyline shapefile (0.04 MB), and a 16-bit GeoTIFF of beach width (4.7 MB). The GeoTIFF and its values attribute table must be stored together. Also included are the Jupyter notebook used for processing, the CSDGM metadata, and the browse graphic. in format Shapefile (version ArcGIS Pro 2.0) Esri polyline shapefile Size: 10 |
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Network links: |
*** *** *** |