gov.noaa.nmfs.inport:48144 eng UTF8 dataset Office for Coastal Management resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2026-04-30T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) 2011 USGS NOAA USACE Lidar: Matanuska-Susitna Borough, AK ak2011_matsu_m2609_metadata 2012-06-27 publication NOAA/NMFS/EDM 48144 https://www.fisheries.noaa.gov/inport/item/48144 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information http://matsu.gina.alaska.edu/Project%20Wide/ WWW:LINK-1.0-http--link Project information Directory of project information. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/2609/supplemental/ak2011_matsu_m2609_qc_survey_report.pdf WWW:LINK-1.0-http--link Survey Report Quality control survey report. download The Matanuska Susitna Borough LiDAR/Imagery Project covers 3680 sq/mi of the Matanuska-Susitna Borough in Alaska. Project parnters and funding sources include: Coastal Impact Assistance Program, Alaska Industrial Development and Export Authority, Alaska Energy Authority, United States Geological Survey, Matanuska Susitna Borough, United States Army Corps of Engineers, United States Fish and Wildlife Service, The Nature Conservancy, National Oceanic and Atmospheric Administration, Mat-Su Salmon Partnership, and Alaska Pacific University. This dataset was originally in LAS 1.2 format with a non-standard class table. The format and the class table has been changed. Details are in the processing steps. The following are the collection parameters and equipment used to create these data sets. The Leica sensor was used for flights in the northern half of the Core Area. All other flights were flown with Optech sensors. Aircraft: Cessna 310(N7516Q), Piper Navajos (N6GR,T73TM and 812TB), Beechcraft KingAir (N898WW) Lidar Systems: Optech ALTM Gemini (03SEN145 and 07SEN201) and Leica ALS 70 Approximate Collection Altitude (Above Mean Terrain): Optech--1400 meters, Leica--2200 meters Ground Speed: Optech--150 kts, Leica--160 kts Pulse Rate Frequency: Optech--70 kHz, Leica--163.6 kHz Mirror Scan Frequency: Optech--40 Hz, Leica--41 Hz Scan Angle (+/-): Optech--17 degrees, Leica--16 Degrees Beam Divergence: Narrow (0.3 mrad) Accuracy statements are based on areas of moderate terrain, with points classified as ground. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard, derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the ground in these areas. Classified data sets such as this one may have varying posting due to some pulses not reaching the ground. Original contact information: Contact Name: Lidar Manager Contact Org: Aerometric, Inc. Title: Lidar Manager Phone: (907) 272-4495 Email: aerometric@aerometric-ak.com The purpose of this data set is to provide lidar-derived topographic data for the Matanuska-Susitna Borough. completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian notPlanned https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/2609/supplemental/ak2011_matsu_m2609.kmz Graphic showing the data extent. kmz EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION theme Global Change Master Directory (GCMD) Science Keywords 23.3 CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA place Global Change Master Directory (GCMD) Location Keywords 23.3 Bare-Earth Terrain theme 2011 2012 August May October temporal 2011 data from the Knik Glacier withheld from ground/vegetation classification due to movement. 2011 data from the Matanuska Glacier withheld from ground/vegetation classification due to movement. Class 14: Bridge Deck Class 15: Noise (unclassifed data 1 foot or less above ground) Class 16: Powerlines Class 18: May 24 Class 19: May 31 Class 1: Unclassified Class 2 with user byte 2: Breakline proximity ground points Class 26: May 13 Class 27: May 24 Class 28: August 26 Class 2: Ground Class 3: Low Vegetation (Less than 6 feet above ground surface) Class 4: Medium Vegetation (Between 6 and 15 feet above ground surface) Class 5: High Vegetation (More than 15 feet above ground surface) Class 6: Buildings Class 7: Error Points (Noise) Class 8: Contour Keypoints Class 9: Water stratum DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Lidar project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: 2011 USGS NOAA USACE Lidar: Matanuska-Susitna Borough, AK [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48144. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: Public otherRestrictions Use Constraints: None otherRestrictions Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of Aerometric Inc., NOAA, the Office for Coastal Management or its partners. unclassified vector eng; US elevation oceans Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; lidarTools 1.0.9 -150.758042 -147.236006 61.229401 62.900371 | Currentness: Ground Condition 2011-05-10 2011-11-12 This data set was downloaded and modified from http://matsu.gina.alaska.edu. At the time of download, two small areas were not available and were listed for collection in 2012. A project summary can be found at http://matsu.gina.alaska.edu/Project%20Wide/Project%20Documentation/MSB%20LiDAR%20Imagery%20Project%20Summary.pdf Additional products are available through the matsu.gina.alaska.edu site, including general project information at: http://matsu.gina.alaska.edu/Project%20Wide/ false eng false LAS 2022-03-16 publication LAS/LAZ - LASer Zip NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2609 WWW:LINK-1.0-http--link Customized Download Create custom data files by choosing data area, product type, map projection, file format, datum, etc. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/2609/index.html WWW:LINK-1.0-http--link Bulk Download Simple download of data files. These are orthometric heights. download dataset Horizontal Positional Accuracy No horizontal accuracy verifications have been completed Vertical Positional Accuracy Accuracies by area: Core Area: Tested 0.176 meters fundamental vertical accuracy at 95 percent confidence level in open terrain using RMSEz x 1.9600. Tested 0.307 meters supplemental vertical accuracy at 95th percentile in developed areas. Tested 0.400 meters supplemental vertical accuracy at 95th percentile in forested areas. Tested 0.331 meters supplemental vertical accuracy at 95th percentile in shrub areas. Tested 0.618 meters supplemental vertical accuracy at 95th percentile in wetlands areas. Tested 0.322 meters consolidated vertical accuracy at 95th percentile in: open terrain, developed, forest, shrub and wetlands areas. Caswell Lakes: Data has not been verified using ground survey points. Matanuska: Data has not been verified using ground survey points. North Susitna: Data has not been verified using ground survey points. Point MacKenzie: Data has not been verified using ground survey points. Willow: Data has not been verified using ground survey points. Completeness Measure Cloud Cover: 0 Completeness Report Not Complete Conceptual Consistency Data has been verified using ground survey points collected by Lounsbury and Associates, Inc. and Aerometric, Inc. Create a smoothed-best estimated trajectory (SBET) of the sensor at a rate of 200 Hz, by integrating the airborne GPS and IMU data The basis of the GPS coordinates were provided to Aero-Metric by Lounsbury, Inc., and were referenced to NAD83 (CORS96) with GEOID09 derived orthometric heights. The maximum baseline distance for this area was 15 km, the average base line length was 5 km. The mean GPS positional accuracy for this area was +/- 0.06 meters. 2011-10-12T00:00:00 Integrate SBET and raw laser data to produce point cloud data in LAS 1.2 format for each flight line. 2011-10-12T00:00:00 Data Calibration: An in-situ calibration was performed using the data collect for this project. The data was classified in each line separately for ground and other common features between lines, such as building roofs. This data was processed in TerraMatch 11.001 (TerraSolid, Ltd.), to compute corrections for roll, pitch, heading, and mirror scale. These corrections are applied in order to minimize discrepancies between flight lines. 2011-10-12T00:00:00 Automated classification of the bare-earth data from the lidar point cloud using a series of algorithms customized for the types of terrain encountered in the project. 2011-12-12T00:00:00 Manual classification of any data which appears to be properly classified using the automated methods. 2012-04-15T00:00:00 Create point cloud data, by tile in LAS 1.2 format with absolute GPS timestamps 2012-11-20T00:00:00 Data for the MatSu Bugoughs was downloaded from matsu.gina.alaska.edu/LiDAR for all areas available 2013-11-26T00:00:00 Data were modified to work with the Digital Coast Data Access Viewer in the following ways: 1) projection was changed from Alaska State Plane to Geographic coordinates; 2) Vertical datum was changed from NAVD88 to NAD83 ellipsoid using NGS GEOID09; 3) the global encoding byte in LAS format was set to indicate adjusted GPS time instead of GPS seconds of the week; and 4) the classification table was modified to avoid classes already used as a standard within Digital Coast. The classification changes were for ground points near breaklines (original class 10 moved to class 2 with user byte set to 2), powerlines (original class 11 moved to class 16), and near ground noise (original class 13 moved to class 15). Data were also compressed to LAZ format using laszip from laszip.org. Data from multiple deliveries were combined and metadata rewritten to cover them all (Caswell Lakes, Core Area, Matanuska, North Susitna, Point MacKenzie, and Willow were the original delivery groups). 2013-12-18T00:00:00 The previous change in the classes was recognized as unhelpful as most software does not provide a way to segment data by the user bytes field for LAS data. Instead of moving the classes back to their original non-standard classes, they were moved to match the LAS1.4 standards as much as possible. This includes moving the points near a breakline to class 20. One class, noise within 1 foot of the ground, is non-standard and was moved to class 77 to conform with the LAS 1.4 requirement that classes below 64 are reserved for ASPRS. The LAS format was also promoted to LAS 1.4. The resulting class table is: classnumber classname 1 Unclassified 2 Ground 3 Low Vegetation 4 Medium Vegetation 5 High Vegetation 6 Building 7 Low Point (noise) 8 Reserved 9 Water 14 Wire-Conductor 17 Bridge Deck 20 Ignored Ground/Bathymetry 77 Near-Ground Noise 2021-06-22T00:00:00 NOAA Office for Coastal Management (843) 740-1202 coastal.info@noaa.gov processor Source Contribution: Aerometric | Source Geospatial Form: digital point data | Type of Source Media: online MatSu Point Clouds 2012-06-27 publication 2011-05-10 2011-11-12