Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20161122 Title: Coastal Topography—Long Island, New York, Post-Hurricane Irene, 30 August 2011 Edition: first Geospatial_Data_Presentation_Form: binary point cloud Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F79021W7 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F79021W7 Description: Abstract: Binary point-cloud data were produced for Long Island, New York, from remotely sensed, geographically referenced elevation measurements collected by Woolpert, Inc. using an Leica ALS50-II lidar sensor flown on a Cessna 404 aircraft. These data were collected post-Hurricane Irene on August 30, 2011. Purpose: The purpose of this project was to produce a highly detailed and accurate digital elevation map for Long Island, New York, for use as a management tool and to make these data available to natural-resource managers and research scientists. To ensure that SPCMSC data management protocols were followed, this survey was retroactively assigned a USGS field activity number (FAN), 11CNT04. Additional survey and data details are available at http://cmgds.marine.usgs.gov/fan_info.php?fan=11CNT04. USGS Contract: G10PC00057 Task Order Number: G11PD01476 Supplemental_Information: Processed data products are used by the U.S. Geological Survey (USGS) CMGP's National Assessment 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. Woolpert, Inc. reports that data are provided in LAS version 1.2 and include ASPRS Class 1: Processed, but unclassified; Class 2: Bare-earth ground; Class 7: Noise. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110830 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -73.94316578 East_Bounding_Coordinate: -72.40736420 North_Bounding_Coordinate: 40.88919512 South_Bounding_Coordinate: 40.51395891 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:53fc59c1-451b-4d2a-9a37-c0b1e218d992 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Cessna 404 Theme_Keyword: laser altimetry Theme_Keyword: Leica ALS50-II Theme_Keyword: shoreline Theme: Theme_Keyword_Thesaurus: Global Change Master Science Directory Theme_Keyword: LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION Theme_Keyword: OCEAN > COASTAL PROCESSES > BARRIER ISLANDS Theme_Keyword: OCEAN > COASTAL PROCESSES > BEACHES Theme_Keyword: OCEAN > COASTAL PROCESSES > SHORELINE DISPLACEMENT Theme_Keyword: DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR Theme: Theme_Keyword_Thesaurus: GCMD Instrument Theme_Keyword: LIDAR > LIGHT DETECTION AND RANGING Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: distributions Theme_Keyword: bathymetry and elevation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: altimetry Theme_Keyword: topographic mapping Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: lidar Theme_Keyword: topography Theme_Keyword: remote sensing Theme_Keyword: digital elevation models Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Long Island Place_Keyword: New York Place_Keyword: United States Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Bare Earth Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 2011 Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Xan Fredericks Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL Contact_Position: Cartographer/Lidar Coordinator Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 502-8086 Contact_Facsimile_Telephone: 727 502-8182 Contact_Electronic_Mail_Address: afredericks@usgs.gov Hours_of_Service: M-F, 8:00-4:00 ET Data_Set_Credit: 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 for data source is expected. 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 periods may be inaccurate because of 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. Security_Information: Security_Classification_System: Unclassified Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; TerraSolid LTD: Terrascan Version 010.018 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Woolpert, Inc. reports that the LiDAR collected for this task order was collected at a vertical accuracy of 18.0 cm (0.59 ft) Root Mean Squared (RMSE), or better, so that when combined with breaklines, it will adequately support the generation of two (2) foot FEMA compliant contours. Logical_Consistency_Report: Woolpert, Inc. reports that all formatted data were validated using commercial GIS software to ensure proper formatting and loading prior to delivery. Completeness_Report: Woolpert, Inc. reports that all deliverables meet specifications in contract and that the LAS Files meet ASPRS and USGS Classification Standards at the time of data delivery, including ASPRS classes 1, 2, and 7. Positional_Accuracy: Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Woolpert, Inc. reports that the LiDAR data vertical accuracy RMSE is 4.8 cm (0.16 ft) and that the data collected under this Task Order meets the National Standard for Spatial Database Accuracy (NSSDA) accuracy standards. The NSSDA standards specify that vertical accuracy be reported at the 95 percent confidence level for data tested by an independent source of higher accuracy. (http://www.fgdc.gov/standards/projects/FGDC-standards-projects/accuracy/part3/index_html). The Fundamental Vertical Accuracy (FVA) of the TIN: 9.4 cm (0.31 ft) at a 95% confidence level, derived according to NSSDA, i.e., based on RMSE of 18.0 cm in the "open terrain" land cover category. Lineage: Process_Step: Process_Description: Woolpert, Inc. reports that 15 flight lines of high density data, at a nominal pulse spacing (NPS) of 1.0 meter, was collected over 120 kilometers of coastline (1 km swath width) along the southern shore of Long Island, New York using a Leica ALS50-II lidar sensor. Multiple returns were recorded for each laser pulse along with an intensity value for each return. A total of one (1) mission was flown on August 30, 2011. A minimum of one airborne global positioning system (GPS) base station was used in support of the LiDAR data acquisition. 11 ground control points were surveyed through static methods. The geoid used to reduce satellite derived elevations to orthometric heights was Geoid09. All data for the task order is referenced to UTM 18N, NAD83, NAVD88, in meters. Airborne GPS data was differentially processed and integrated with the post processed 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 were delivered in the ArcINFO ArcGrid binary format: bare-earth. System Parameters: - Type of Scanner = LH Systems ALS50 - Data Acquisition Height = 1,981 meters (6,500 feet) AGL - Scanner Field of View = 40 degrees - Scan Frequency = 41.8 Hertz - Pulse Repetition Rate - 115.6 Kilohertz - Aircraft Speed = 130 Knots - Swath Width = 1,442 meters (4,732 feet) - Number of Returns Per Pulse = Maximum of 4 - Distance Between Flight Lines = 1,010 meters (3,313 feet). The individual flight lines were inspected 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 bare-earth points (Class 2), Noise (Class 7), and unclassified data (Class 1). 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. Process_Date: 20110901 Source_Produced_Citation_Abbreviation: Classified LAS Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Woolpert, Inc. Contact_Address: Address_Type: mailing and physical Address: 4454 Idea Center Blvd. City: Dayton State_or_Province: OH Postal_Code: 40503 Country: USA Contact_Voice_Telephone: (937) 461-5660 Contact_Facsimile_Telephone: (937) 461-0743 Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) Process_Step: Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170124 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alan O. Allwardt Contact_Position: Contractor -- Information Specialist Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7551 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: aallwardt@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20201013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Tile Direct_Spatial_Reference_Method: Point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -75.000000 Latitude_of_Projection_Origin: 0 False_Easting: 500000.000000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1.0 Ordinate_Resolution: 1.0 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.25722210100002 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 (GEOID09) Altitude_Resolution: 0.15 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Xan Fredericks Contact_Position: Cartographer/Lidar Coordinator Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 502-8086 Hours_of_Service: M-F, 8:00-4:00 ET Resource_Description: LINY2011_HRIR_BE_z18_n88g09_classified.laz Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Compressed LAS (LAZ) Format_Version_Number: 1.2 Format_Specification: Compressed LAS (LAZ) ASPRS Classes 1,2,7 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F79021W7/data/LINY2011_HRIR_BE_z18_n88g09_classified.zip Fees: None Custom_Order_Process: Contact U.S. Geological Survey for details. Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Xan Fredericks Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL Contact_Position: Cartographer/Lidar Coordinator Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 502-8086 Contact_Electronic_Mail_Address: afredericks@usgs.gov Hours_of_Service: M-F, 8:00-4:00 ET Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time