gov.noaa.nmfs.inport:51268
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
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
2016 NOAA NGS Topobathy Lidar DEM: Marthas Vineyard and Nantucket Island, MA
2017-07-12
publication
NOAA/NMFS/EDM
51268
https://www.fisheries.noaa.gov/inport/item/51268
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
NGS Communications and Outreach Branch
(301) 713-3242
(301) 713-4172
ngs.infocenter@noaa.gov
originator
https://coast.noaa.gov/dataviewer
WWW:LINK-1.0-http--link
Citation URL
Data Access Viewer for discovering coastal imagery, land cover, and elevation data
download
https://coast.noaa.gov/dataregistry
WWW:LINK-1.0-http--link
Citation URL
Web page for Digital Coast for finding coastal data
download
https://coast.noaa.gov
WWW:LINK-1.0-http--link
Citation URL
Web page for the NOAA Office for Coastal Managemen
download
imageDigital
These data were collected by Leading Edge Geomatics using a Leica Chiroptera II Bathymetric & Topographic Sensor. The data were acquired from October 4, 2016 through November 1, 2016. The data includes topobathy data in LAS 1.2 format classified as created, never classified (0); Unclassified (1); Ground (2); Topo Noise (7); Water (9); Refracted Bathymetric Noise (22); Water Column (25); Bathymetric Bottom or Submerged Topography (26); Water Surface (27); Derived Water Surface (28); Submerged Object (29); Submerged Object International Hydrographic Organization S-57 object, not otherwise specified (30) in accordance with project specifications. The project area covers Marthas Vineyard and Nantucket Islands along with some shoal areas surrounding the islands. The project covers a total of 234 square miles within the AOI. This dataset contains 7030 - 500 m x 500 m lidar tiles.
Original contact information:
Contact Org: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
Title: Chief, Remote Sensing Division
Phone: 240-533-9576
This lidar data are an ancillary product of NOAA's Coastal Mapping Program (CMP), created through a wider Integrated Ocean and Coastal Mapping initiative to increase support for multiple uses of the data. The Martha's Vineyard and Nantucket Islands have been identified as having critical topographic and bathymetric data gaps by NOAA. This lidar data will fill those critical gaps. It is not intended for mapping, charting, or navigation.
We request that you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these data in a report, publication, or presentation.
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
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
theme
Global Change Master Directory (GCMD) Science Keywords
17.0
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MASSACHUSETTS
place
Global Change Master Directory (GCMD) Location Keywords
17.0
20161004
20161101
temporal
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
DEMs
project
InPort
otherRestrictions
Cite As: Office for Coastal Management, [Date of Access]: 2016 NOAA NGS Topobathy Lidar DEM: Marthas Vineyard and Nantucket Island, MA [Data Date Range], https://www.fisheries.noaa.gov/inport/item/51268.
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: None
otherRestrictions
Use Constraints: 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.
otherRestrictions
Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Geodetic Survey, the Office for Coastal Management, or its partners.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
51268
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/51268.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
grid
eng; US
elevation
OS Independent
-70.869328
-69.9375
41.225857
41.515799
| Currentness: Ground Condition
2016-10-04
2016-11-01
Data include all lidar returns. Outliers or false returns (e.g., returns from birds, atmospheric particles, and/or system noise) may be present in the data. An automated ground classification algorithm was used to determine bare earth point classification. It should be noted that not all returns were correctly classified; therefore the user should examine for acceptability.
Data for Marthas Vineyard and Nantucket Islands project was acquired by Leading Edge Geomatics using a Leica Chiroptera II Bathymetric and Topographic lidar sensor.
Data is referenced to:
Horizontal Datum-NAD83 (2011) epoch: 2010
Projection-UTM Zone 19 North
Horizontal Units-meters
Vertical Datum-NAVD88, GEOID12B
Vertical Units-meters
IMG - ERDAS Imagine
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=8461
WWW:LINK-1.0-http--link
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8461
Link to custom download points, grids, or contours from the Data Access Viewer (DAV)
download
https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/NGS_MA_marthasvineyard_nantucket_DEM_2016_8461/index.html
WWW:LINK-1.0-http--link
https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/NGS_MA_marthasvineyard_nantucket_DEM_2016_8461/index.html
Link to bulk download img files
download
dataset
Representativeness
The vertical accuracy is tested by extracting the elevation of the pixel that contains the x/y coordinates of the checkpoint and comparing these DEM elevations to the surveyed elevations.
Vertical Positional Accuracy
This DEM dataset was tested to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 10 cm RMSEz Vertical Accuracy Class. Actual NVA accuracy was found to be RMSEz = 8.1 cm, equating to +/- 15.8 cm at 95% confidence level.
Completeness Report
This dataset contains 7030 - 500 m x 500 m lidar tiles.
Conceptual Consistency
Not applicable
Data for Marthas Vineyard and Nantucket Islands project was acquired by Leading Edge Geomatics using a Leica Chiroptera II Bathymetric and Topographic lidar sensor. All delivered lidar data is referenced to:
Horizontal Datum-NAD83 (2011) epoch: 2010
Projection-UTM Zone 19 North
Horizontal Units-meters
Vertical Datum-NAVD88, GEOID12B
Vertical Units-meters
This dataset encompasses 7,030 500m x 500m tiles. Both green lidar data and NIR lidar data was acquired.
Leading Edge Geomatics acquired, calibrated and performed the refraction correction to the lidar data.
Dewberry received the calibrated green and NIR data and verified complete coverage. Relative accuracy of the green swaths compared to overlapping and adjacent green swaths as well as the relative accuracy of green swaths compared to overlapping and adjacent NIR swaths was verified through the use of Delta-Z (DZ) orthos created in GeoCue software. Intraswath or within a swath relative accuracy was verified using Quick Terrain Modeler. Profiles of elevated planar features, such as roofs, were used to verify horizontal alignment between overlapping swaths. Dewberry then verified absolute vertical accuracy of the swath data prior to full-scale production.
Dewberry used ArcGIS to create 2-D breaklines. The bathymetric points exported by the Leica processing software were aggregated into polygons. These 2D breaklines representing the bathy areas were manually reviewed and adjusted where necessary to ensure all well-defined hydrographic features (at 1:1200-scale) were captured with breaklines.
Dewberry used algoritms in TerraScan to create the intial ground/submerged topography surface.
Dewberry used the 2-D breaklines to classify the bathymetric bottom and ground points properly in TerraScan.
All lidar data was peer-reviewed. Dewberry's QAQC also included creating void polygons for use during review. All necessary edits were applied to the dataset. GeoCue software was used to update LAS header information, including all projection and coordinate reference system information. The final lidar data are in LAS format 1.2 and point data record format 3.
The final classificaton scheme is as follows:
1-Unclassified
2-Ground
7-Topo Noise
9-Water
22-Refracted Bathymetric Noise
25-Water Column
26-Bathymetric Bottom or Submerged Topography
27-Water Surface
28-Derived Water Surface
29-Submerged Object
30-International Hydrograpic Organization (IHO) S-57 objects
All data is then verified by an Independent QC department within Dewberry. The independent QC is performed by separate analysts who do not perform manual classification or editing. The independent QC involves quantitative and qualitative reviews.
2017-01-01T00:00:00
Lidar data classified as ground (2) and submerged topography (26) were then converted to ESRI multipoint format. These multipoints were then used to generate a terrain and the terrain was converted to a raster in IMG format with 1 meter pixel resolution. The terrain and output raster were created over the full project area to reduce edge-matching issues and improve seamlessness. The raster was clipped to the tile grid and named according to project specifications to result in tiled topobathymetric DEMs.
All tiled DEMs incorporate the use of the void polygons. The void polygons represent bathymetric areas with no bathymetric bottom returns and are set as NoData in the DEMs. Void polygon creation is described in the final project report and the void polygon metadata.
2017-11-01T00:00:00