U.S. Geological Survey 2013 first binary point cloud U.S. Geological Survey Data Series 765 St. Petersburg, FL U.S. Geological Survey https://pubs.usgs.gov/ds/765 Binary point-cloud data were produced for a portion of the New York, Delaware, Maryland, Virginia, and North Carolina coastlines, post-Hurricane Sandy (Sandy was an October 2012 hurricane that made landfall as an extratropical cyclone on the 29th), from remotely sensed, geographically referenced elevation measurements collected by Photo Science, Inc. (Delaware, Maryland, Virginia, and North Carolina) and Woolpert, Inc. (Fire Island, New York) using airborne lidar sensors. The purpose of this project was to derive mean-high-water shoreline, dune crest (DHIGH) and dune toe (DLOW) elevation for a portion of the Eastern United States coastline following Hurricane Sandy, for use as a management tool and to make these data available to natural-resource managers and research scientists. Processed data products are used by the USGS Coastal and Marine Geology Program's National Assessments of Coastal Change Hazards project to quantify the vulnerability of shorelines to coastal change hazards such as severe storms, sea-level rise, and shoreline erosion and retreat. 20121105 20121108 20121109 20121110 20121111 20121112 20121116 20121126 20121128 20121129 ground condition Complete None planned -78.82552783 -72.69471375 40.81276256 34.55736585 USGS Metadata Identifier USGS:9c8d382e-1659-4ae9-a382-33efda949d9a ISO 19115 Topic Category elevation General Cessna 206 Cessna 310 Dhigh Dlow Digital Elevation Model DEM dune crest dune toe extratropical cyclone laser altimetry lidar remote sensing shoreline topography Global Change Master Science Directory (GCMD) LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION OCEAN > COASTAL PROCESSES > BARRIER ISLANDS OCEAN > COASTAL PROCESSES > BEACHES OCEAN > COASTAL PROCESSES > SHORELINE DISPLACEMENT DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR GCMD Instrument LIDAR > LIGHT DETECTION AND RANGING Data Categories for Marine Planning distributions bathymetry and elevation Marine Realms Information Bank (MRIB) Keywords altimetry topographic mapping USGS Thesaurus LIDAR topography digital elevation models Geographic Names Information System Delaware Maryland Fire Island Long Island New York North Carolina Virginia DelMarVa Peninsula United States General Bare Earth General 2012 Post-Hurricane Sandy None The U.S. Geological Survey and National Park Service request to be acknowledged as originators of these data in future products or derivative research. Hilary Stockdon U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL Research Oceanographer mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727 803-8747 (x3074) 727 803-2031 hstockdon@usgs.gov M-F, 9:00-5:00 ET Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, 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. Unclassified Unclassified None Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.3000 U.S. Geological Survey 2013 vector digital data Data Series 765 St. Petersburg, FL U.S. Geological Survey This data represents the tile index for lidar data collected for the U.S. Geological Survey in November 2012 following Hurricane Sandy, which made landfall in the eastern United States on October 29th, 2012. The lidar LAS and derived-digital elevation model (DEM) data are divided into these tiles and filenames match the tile number. The index shows the extent of data collection (portions of the coastline of New York, Delaware, Maryland, Virginia, and North Carolina) and provides tile names to aid in identifying files for data download. http://pubs.usgs.gov/ds/765/extras/tile_extents/Lidar_Tile_Index.zip The project area required lidar to be collected on 1-meter ground sample distance (GSD) or better and processed to meet a bare earth vertical accuracy of 12.5-centimeters root mean square error (RMSEz) or better. Data for Fire Island was visually inspected by Woolpert, Inc. Data for Delaware, Maryland, Virginia, and North Carolina were tested by Photo Science, Inc. for both vertical and horizontal accuracy. Although collected on a tile-by-tile basis, breaklines are merged together to produce a single dataset deliverable. Checks are done to ensure that the data is seamless from one tile to the next before being combined and that breaklines meeting the project requirements have been collected across the entire project area. Combining the breaklines with lidar data to create other deliverables is another check of the data. All data are seamless from one tile to the next, containing no gaps or "no data" areas. These data span from Long Island, New York to Cape Hatteras, North Carolina. The State of New Jersey data were collected using the EAARL-B sensor and those data will be published separately. Horizontal accuracy is +/- 0.194 meter at the 95% confidence level. Lidar file format (LAS) data were compared to survey control points to determine the FVA of the LAS Swath and of the DEM. LAS Swath Fundamental Vertical Accuracy (FVA) Tested 0.147 m (14.7 cm) fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA (National Standard for Spatial Data Accuracy), in open terrain using 0.075 m (7.5 cm) (RMSEz x 1.96000), tested against the TIN. Using an Optech Gemini lidar sensor, 11 flight lines of high-density data, at a nominal pulse spacing (NPS) of 1 meter, were collected by Woolpert along the southern shore of Long Island, New York (approximately 15 square miles). Data Acquisition Height = 3,500 feet Above Ground Level (AGL) - Aircraft Speed = 125 Knots. Multiple returns were recorded for each laser pulse along with an intensity value for each return. A total of one mission was flown on November 5th. Two airborne global positioning system (GPS) base stations were used in support of the lidar data acquisition. Eight ground control points were surveyed through static methods. The GEOID used to reduce satellite-derived elevations to orthometric heights was GEOID96. Data for the task order is referenced to the UTM Zone 18N, North American Datum of 1983 (NAD83), and North American Vertical Datum of 1988 (NAVD88), in meters. Airborne GPS data was differentially processed and integrated with the post-processed inertial measurement unit (IMU) data to derive a smoothed best estimate of trajectory (SBET). The SBET was used to reduce the lidar slant range measurements to a raw reflective surface for each flight line. The coverage was classified to extract a bare earth digital elevation model (DEM) and separate last returns. In addition to the LAS deliverables, one layer of coverage was delivered in the ERDAS Imagine (IMG) Format: bare earth. 20121105 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA 937 461-5660 937 461-0743 M-F, 8:00-5:00 ET The lidar calibration and system performance are verified on a periodic basis using Woolpert's calibration range. The calibration range consists of a large building and runway. The edges of the building and control points along the runway have been located using conventional survey methods. Inertial measurement unit (IMU) misalignment angles and horizontal accuracy are calculated by comparing the position of the building edges between opposing flight lines. The scanner scale factor and vertical accuracy are calculated through comparison of lidar data against control points along the runway. Field calibration is performed on all flight lines to refine the IMU misalignment angles. IMU misalignment angles are calculated from the relative displacement of features within the overlap region of adjacent (and opposing) flight lines. The raw lidar data are reduced using the refined misalignment angles. 2012 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA 937 461-5660 937 461-0743 M-F, 8:00-5:00 ET Once the data acquisition and GPS processing phases are complete, the lidar data were processed immediately by Woolpert to verify the coverage had no voids. The GPS and IMU data were post-processed using differential and Kalman filter algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project. 20121107 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA 937 461-5660 937 461-0743 M-F, 8:00-5:00 ET The individual flight lines were inspected by Woolpert to ensure the systematic and residual errors have been identified and removed. Then, the flight lines were compared to adjacent flight lines for any mismatches to obtain a homogenous coverage throughout the project area. The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" lidar returns. This process determined Default (Class 1), Ground (Class 2), Noise (Class 7), Water (Class 9), Ignored Ground (Class 10), Overlap Default (Class 17), and Overlap Ground (Class 18) classifications. The bare-earth (Class 2 - Ground) lidar points underwent a manual QA/QC step to verify that artifacts have been removed from the bare-earth surface. The surveyed ground control points are used to perform the accuracy checks and statistical analysis of the lidar dataset. 20121107 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA 937 461-5660 937 461-0743 M-F, 8:00-5:00 ET Photo Science, Inc. located a total of 29 calibration control points used in the post processing of the lidar data. The points were located on relatively flat terrain on surfaces that generally consisted of grass, gravel, or bare earth. Applanix software (PosPAC MMS) was used in the post processing of the airborne GPS and inertial data, which are critical to the positioning and orientation of the sensor during all flights. POSPac MMS provides the smoothed best estimate of trajectory (SBET) that is necessary for the post processor to develop the point cloud from the lidar missions. The point cloud is the mathematical three-dimensional collection of all returns from all laser pulses as determined from the aerial mission. The GEOID used to reduce satellite derived elevations to orthometric heights was GEOID96. Data for the task order is referenced to the UTM Zone 18N, NAD83, and NAVD88, in meters. At this point the data are ready for analysis, classification, and filtering to generate a bare-earth surface model in which the above ground features are removed from the data set. The point cloud was manipulated by the Optech or Leica software; GeoCue, TerraScan, and TerraModeler software were used for the automated data classification, manual cleanup, and bare-earth generation from the data. Project specific macros were used to classify the ground and to remove the side overlap between parallel flight lines. All data were manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. All ground (ASPRS Class 2) lidar data inside of the Lake Pond and Double Line Drain hydro flattening breaklines were then classified to water (ASPRS Class 9) using TerraScan macro functionality. All Lake Pond and Double Line Drain Island features were checked to ensure that the ground (ASPRS Class 2) were reclassified to the correct classification after the automated classification was completed. All overlap data were processed through automated functionality provided by TerraScan to classify the overlapping flight line data to approved classes by USGS. The overlap data were classified to Class 17 (USGS Overlap Default) and Class 18 (USGS Overlap Ground). These classes were created through automated processes only and were not verified for classification accuracy. Data were then run through additional macros to ensure deliverable classification levels matching the ASPRS LAS Version 1.2 Classification structure. GeoCue functionality was then used to ensure correct LAS Versioning. In-house software was used as a final QA/QC check to provide LAS Analysis of the delivered tiles. QA/QC checks were performed on a per tile level to verify final classification metrics and full LAS header information. 2012 Photo Science, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Lexington KY 40503 USA 859 277-8700 M-F, 9:00-5:00 ET All Woolpert, Inc. LAZ files were extracted to LAS and converted to ASCII xyz point files using LASTools las2las.exe. The ASCII point files were then written to netcdf format using MATLAB 8.0.0.783. 20130227 Kristin Sopkin Cherokee Nation Technology Solutions, U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL Data Modeler/Analyst mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727 803-8747 (x3141) ksopkin@usgs.gov M-F, 8:00-4:00 ET Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. 20170124 U.S. Geological Survey Alan O. Allwardt Contractor -- Information Specialist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060 831-460-7551 831-427-4748 aallwardt@usgs.gov 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 Tile index Point Point Universal Transverse Mercator 18 0.999600 -75.000000 0 500000.000000 0 row and column 1.00000 1.00000 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.25722210100002 North American Vertical Datum of 1988 (GEOID96) 0.15 meters Explicit elevation coordinate included with horizontal coordinates Each LAS file contains the following fields for each point: Northing, Easting, Elevation, Class, Intensity, Flight Line Number. The class field is defined as: Class 1 (Default) - mixture of the remaining points after the ground classification. These would contain bridges, overpasses, buildings, cars, parts of vegetation, etc; Class 2 (Ground) - bare earth surface. They are from the automated processing, as well as the manual surface review; Class 7 (Noise); Class 9 (Water) - inside of hydrographic features, as collected by photogrammetric methods. These are from automated processing, as well as the manual surface review; Class 10 (Ignored Ground); Class 17 (Overlap Default); and Class 18 (Overlaps Ground). The attributes and classifications met contract specifications. U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL Hilary Stockdon Research Oceanographer mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727 803-8747 (x3074) M-F, 9:00-5:00 ET DS 765 Although these data have been 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. LAS; ZIP 1 The lidar LAS files with metadata are compressed into a zip file by tile number within their respective state folders. To identify state and tile number see Cross Reference "Tile Index". https://pubs.usgs.gov/ds/765/pubs765/data/Delaware/LAS/ https://pubs.usgs.gov/ds/765/pubs765/data/Maryland/LAS/ https://pubs.usgs.gov/ds/765/pubs765/data/Virginia/LAS/ https://pubs.usgs.gov/ds/765/pubs765/data/North_Carolina/LAS/ https://pubs.usgs.gov/ds/765/pubs765/data/New_York/LAS/ 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 Xan Fredericks Cherokee Nation Technology Solutions, U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL Lidar Validation and Processing Analyst mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727 803-8747 (x3086) afredericks@usgs.gov M-F, 8:00-4:00 ET FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time