U.S. Geological Survey
2015
Back-Island Shorelines for the Undeveloped Areas of New Jersey's Barrier Islands, Extracted from Orthoimagery, March 9, 1991, to July 30, 2013
vector digital data
U.S. Geological Survey Data Series
960
St. Petersburg, Fla.
U.S. Geological Survey
https://pubs.usgs.gov/ds/0960/downloads/sandy_hook.zip
https://pubs.usgs.gov/ds/0960/downloads/barnegat_bay.zip
https://pubs.usgs.gov/ds/0960/downloads/great_bay.zip
https://pubs.usgs.gov/ds/0960/downloads/great_channel.zip
https://pubs.usgs.gov/ds/0960/downloads/ludlum_bay.zip
https://pubs.usgs.gov/ds/0960/downloads/cape_may.zip
Assessing the physical change to shorelines and wetlands is critical in determining the resiliency of wetland systems that protect adjacent habitat and communities. The wetland and back-barrier shorelines of New Jersey's barrier islands changed as a result of wave action and storm surge that occurred during Hurricane Sandy, which made landfall on October 29, 2012. The impact of Hurricane Sandy will be assessed and placed in its historical context to understand the future vulnerability of wetland systems.
Making these assessments will rely on data extracted from current and historical resources such as maps, aerial photographs, satellite imagery, and lidar elevation data, which document physical changes over time.
This USGS Data Series publication includes several open-ocean shorelines, back-island shorelines, back-island shoreline points, sand area polygons, and sand lines for the undeveloped areas of New Jersey's barrier islands that were extracted from orthoimagery (orthoaerial photography) dated from March 9, 1991 to July 30, 2013.
This data set consists of lines that were digitized at the intersection of the back-island shoreline and a set of transects spaced at 20-meter (m) intervals. The transects, nj_transects_ln_20m_utm18.shp, are included in this Data Series publication and can be accessed via the Data Download page, located at http://pubs.usgs.gov/ds/0960/_ds_data-products.html. The lines falling between the transects do not follow the natural back-island shoreline. Only one back-island shoreline/transect intersection line vector was digitized per transect.
Orthoimagery of New Jersey were acquired in digital format from U.S. Department of Agriculture (USDA), U.S. Geological Survey (USGS), National Oceanic and Atmospheric Administration (NOAA), and New Jersey Geographic Information Network (NJGIN).
The following list provides additional details about the orthoimagery used. The digitized back-island shorelines are organized by area (Sandy Hook, Barnegat Bay, Great Bay, Ludlum Bay, Great Channel, and Cape May) with all dates for each area compiled into one data-set (shapefile) named bshrln_<range of dates>_<area name>.shp. The orthoimage date for each line is included in the shapefile attribute table "Date" field.
Date Type Source Resolution
19910309-19910313 Pan USGS, DOQQ 1 m (meter)
19950325-19950407 CIR USGS, DOQQ 1 m
20020218-20020411 CIR NJGIN 1 m*
20060805-20060613 Natural USDA, NAIP 1 m
20070318-20070415 Natural NJGIN 1 m*
20080808-20080826 Natural USDA, NAIP 1 m
20100703-20100726 Natural USDA, NAIP 1 m
20120314-20120416 RGBI NJGIN 1 m*
20121031-20121106 Natural NOAA 1 m*
20130707-20130730 Natural USDA, NAIP 1 m
Pan - Panchromatic (1 band, gray scale)
CIR - Color Infrared (infrared, red, green)
Natural - Natural Color (red, green, blue)
RGBI - Natural Color and Infrared (red, green, blue, and infrared)
DOQQ - Digital Orthophoto Quarter Quads
NAIP - National Agriculture Imagery Program
*Resampled from 1-foot resolution imagery.
These data were extracted from orthoimagery to document the changes in the undeveloped barrier island areas of New Jersey's back-island shoreline due to Hurricane Sandy and over time since 1991.
These data will aid in developing an assessment of the physical change in wetlands due to wave action and storm surge from Hurricane Sandy and in determining the resiliency of wetland systems that protect adjacent habitat and communities.
19910309
20130730
ground condition
None planned
-74.880814
-73.975599
40.481291
38.944830
USGS Metadata Identifier
USGS:4736758d-909c-4d43-aa83-f2ebfd24a174
None
aerial photography
remote sensing
orthoimagery
orthophotography
shoreline
wetlands
erosion
Global Change Master Directory (GCMD)
LAND SURFACE > LAND USE/LAND COVER > LAND COVER
OCEAN > COASTAL PROCESSES > BARRIER ISLANDS
COASTAL PROCESSES > BEACHES
DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR
None
New Jersey
Sandy Hook
Barnegat Bay
Great Bay
Ludlum Bay
Great Channel
Cape May
United States
National Seashore
Monmouth County
Ocean County
Atlantic County
Cape May County
General
1991
1995
2002
2006
2007
2008
2010
2012
2013
None.
Variability in the quality of the imagery from one date to another, from one image to another taken on the same date, and from one part of an image to another part of the same image, exists due to many factors including variation in sun angle, atmospheric conditions, season, reflectivity of the earth surface, camera angle, camera lens, camera settings, film sensitivity, water turbidity, water depth, tide level, waves, and error in image rectification. No adjustments were made to account for tide level.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, Coastal and Marine Geology Program as the originator of these data in future products or derivative research.
U.S. Geological Survey
Kristy Guy
mailing and physical
600 4th St. S.
St. Petersburg
FL
33701
USA
727-502-8000
727-502-8181
kguy@usgs.gov
Monday through Friday 9:00 AM to 5:00 PM (Eastern Time)
Acknowledgment of the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Coastal and Marine Geology Program as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photointerpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such.
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552.
Not all of the orthoimagery data-sets covered the entire study area. Inconsistencies due to differences in image quality should be expected. No adjustments were made for varying tide levels. The lines were digitized at a scale of approximately 1:2,000.
Complete.
The horizontal accuracy of the data is unknown.
USGS
2015
USGS DOQQ Orthoimagery
orthophotography
http://earthexplorer.usgs.gov/
USGS
online
19910309
19950407
ground condition
USGS Orthoimagery
This data source was used to hand-digitize back-island shorelines.
U.S. Department of Agriculture (USDA)
2015
USDA NAIP Orthoimagery
orthophotography
http://datagateway.nrcs.usda.gov/GDGOrder.aspx
USDA
online
20060805
20130730
ground condition
USDA Orthoimagery
This data source was used to hand-digitize back-island shorelines.
New Jersey Geographic Information Network (NJGIN)
2015
NJGIN Orthoimagery
orthophotography
https://njgin.state.nj.us/NJ_NJGINExplorer/DataDownloads.jsp
NJGIN
online
20130315
20130315
ground condition
NJGIN Orthoimagery
This data source was used to hand-digitize back-island shorelines.
National Oceanic and Atmospheric Administration (NOAA)
2015
NOAA Orthoimagery
orthophotography
http://storms.ngs.noaa.gov/storms/sandy/index.html
NOAA
online
20121031
20121106
ground condition
NOAA Orthoimagery
This data source was used to hand-digitize back-island shorelines.
Using ArcMap 10.2 and a scale of approximately 1:2000, shore-normal transect lines spaced 20-m apart were laid over the orthoimages. A line was hand-digitized at the intersections of the apparent back-island shoreline and the transect lines. Only one back-island shoreline/transect line intersection was digitized per transect line. The orthoimagery date was added to the "Date" field in the shapefile attribute table.
USGS Orthoimagery
USDA Orthoimagery
NJGIN Orthoimagery
NOAA Orthoimagery
2015
bshrln_*.shp
USGS
mailing and physical
600 4th St. S.
St. Petersburg
FL
33701
USA
727-502-8000
727-502-8181
Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)
If unable to reach the contact by telephone, please leave a voice message.
Added keywords section with USGS persistent identifier as theme keyword.
20201013
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
String
321
Universal Transverse Mercator
18
0.9996
-75.0
0.0
500000.0
0.0
coordinate pair
0.6096
0.6096
meter
North American Datum of 1983
Geodetic Reference System 1980
6378137.0
298.257222101
bshrln_*.shp
Back-island shorelines hand-digitized at the intersection of 20-m spaced transect lines and the apparent back-island shorelines as seen in orthoimagery.
USGS
FID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
Id
User specified identifier.
USGS
1
321
Date_
Date of orthoimage source.
USGS
Date in month, day, year that the image was collected. This date may represent a date range if the exact date is unknown. If that is the case, the range of dates is stated in the Note attribute.
yyyymmdd
Date of orthoimage source formatted as an 8-digit number representing year, month, and day.
USGS
Date formatted as an 8-digit number representing year, month, and day. This date may represent a date range if the exact date is unknown. If that is the case, the range of dates is stated in the Note attribute.
Note
Additional information.
USGS
Additional text information. If the source orthoimage was taken within a range of dates, those dates are specified here.
Kristy Guy
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Fla.
GIS/RS Analyst
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727-502-8000
Monday-Friday, 9:00-5:00 Eastern Time
DS 960
Although these data were processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
ArcGIS shapefile
https://pubs.usgs.gov/ds/0960/downloads/sandy_hook.zip
https://pubs.usgs.gov/ds/0960/downloads/barnegat_bay.zip
https://pubs.usgs.gov/ds/0960/downloads/great_bay.zip
https://pubs.usgs.gov/ds/0960/downloads/great_channel.zip
https://pubs.usgs.gov/ds/0960/downloads/ludlum_bay.zip
https://pubs.usgs.gov/ds/0960/downloads/cape_may.zip
None if obtained online; otherwise prices vary.
Publications are available from USGS Information Services, Box 25286, Federal Center, Denver, CO 80225-0046 (telephone: 1-888-ASK-USGS, e-mail: infoservices@usgs.gov).
20201013
USGS
Kristy Guy
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
727-502-8000
727-502-8181
kguy@usgs.gov
Monday through Friday 9:00 AM to 5:00 PM (Eastern Time)
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
None.
None.
None.
Unclassified
NONE