49769 ma2005_nsf_pi_woods_hole_m2554_metadata Data Set Published / External 49401 Lidar - partner (no harvest) Project Completed 2014-06-02 The survey area is an irregular polygon (148 square kilometers) at the Plum Island River in northeast Massachusetts. The eastern third of the polygon was flown on Monday April 18, 2005. The central third was flown early Tuesday morning April 19, 2005 and the last third (the Parker River area) was flown on the afternoon of the 19th. Collected as part of the National Center for Airborne Laser Mapping research, combining land-use classification and change analysis to provide a means of analyzing an important geomorphological metric that has not been possible before. 10413 A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2554/supplemental/ma2005_nsf_pi_woods_hole_m2554.kmz . A report documenting project notes is available at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2554/supplemental/ma2005_nsf_pi_woods_hole_notes_m2554.pdf . A processing report for this project is available at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2554/supplemental/ma2005_nsf_pi_woods_hole_processingreport_m2554.pdf Theme ISO 19115 Topic Category elevation Theme Surface Theme Terrain Office for Coastal Management Charleston SC Data Set As Needed The lidar classification are stored in LAZ format: 1 - unclassified, 2 - ground All deliverables meet specifications in contract. LAS Files meet ASPRS Classification Standards Any conclusions drawn from the analysis of this information are not the responsibility of NCALM, NSF, OpenTopography, Marine Biological Laboratory, NOAA, the Office for Coastal Management or its partners. LiDAR data acquisition and processing completed by the National Center for Airborne Laser Mapping (NCALM). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1043051 Data Steward 2014-06-02 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2014-06-02 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Metadata Contact 2014-06-02 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Point of Contact 2014-06-02 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Publication Date -70.961323 -70.742528 42.812017 42.650945 Range 2005-03-18 2005-04-18 Yes Unclassified This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2554 The data set is dynamically generated based on user-specified parameters.; None Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. These data depict the heights at the time of the survey and are only accurate for that time https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2554 Customized Download Create custom data files by choosing data area, product type, map projection, file format, datum, etc. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2554/index.html Bulk Download Simple download of data files. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2554/supplemental/ma2005_nsf_pi_woods_hole_m2554.kmz Browse Graphic Browse Graphic kmz This graphic shows the lidar coverage for the 2005 Plum Island lidar collection in Massachusetts. https://coast.noaa.gov Online Resource https://coast.noaa.gov/dataviewer Online Resource 2016-05-23 Date that the source FGDC record was last modified. 2017-11-14 Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. 2018-02-08 Partial upload of Positional Accuracy fields only. 2018-03-13 Partial upload to move data access links to Distribution Info. Unknown; Quantitative Value: 1.0 meters, Test that produced the value: Horizontal accuracy is not explicitly stated, default value of 1 m Unknown; Quantitative Value: 0.09 meters, Test that produced the value: The standard deviation of the differences between the ALTM nearest neighbor shot and the ground truth points was about 9 cm on all flights. After analysis, all trajectories showed height shifts of between 10 and 15 cm. complete In order to provide on-site calibration and ground truth, a section of the Plum Island Turnpike running east and west just north of the project polygon was surveyed using vehicle-mounted GPS, and then surveyed with the ALTM during the flight. Comparisons were made between the heights of the vehicle-collected GPS and the airborne laser scanner. This allowed for a check on the calibration of the airborne scanner as well as a measure of the accuracy of the scanner heights. Processing Notes Discrete 2011-05-18 Unknown | Source Geospatial Form: model | Type of Source Media: HDD 1 During processing, a scan cutoff angle of 4.0 degrees was used to eliminate points at the edge of the scan lines. This was done to improve the overall DEM accuracy (points farthest from the scan nadir are the most affected by small errors in pitch, roll and scanner mirror angle measurements). Points with very low intensity values were also filtered out (intensity values less than 7), because these points also tend to be the least accurate. This is due to the fact that very weak return pulses yield the noisiest range measurements. These points represent a very small percentage of the total number of points, usually in the neighborhood of a few hundredths of one percent. All calibration files as well as all raw observation files (both GPS and ALTM) necessary to reprocess this project in its entirety are archived by UC Berkeley. 2 The NOAA Office for Coastal Management (OCM) received the files in laz format via download from the OpenTopography online repository. The files contained lidar elevation and intensity measurements. The data were in Mainland Massachusetts State Plane Zone 2001 (orthometric) heights in meters. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The data were converted from state plane orthometric coordinates to geographic coordinates. 2. The data were converted from NAVD88 heights in meters to GRS80 (ellipsoid) heights in meters using Geoid 03. 3. The LAS data were sorted by latitude and the headers were updated then stored as LAZ data. 2014-05-02T00:00:00 gov.noaa.nmfs.inport:49769 Anne Ball 2017-11-15T15:22:11 SysAdmin InPortAdmin 2022-08-09T17:11:36 2022-03-16 OCM Partners OCMP 1002 Public No No 2022-03-16 1 Year 2023-03-16