2021 NOAA NGS Topobathy Lidar: Gloucester, MA
Data Set (DS) | National Geodetic Survey (NGS)GUID: gov.noaa.nmfs.inport:71105 | Updated: November 1, 2023 | Published / External
Summary
Short Citation
National Geodetic Survey, 2024: 2021 NOAA NGS Topobathy Lidar: Gloucester, MA, https://www.fisheries.noaa.gov/inport/item/71105.
Full Citation Examples
These data were collected by the National Oceanic Atmospheric Administration National Geodetic Survey Remote Sensing Division using a Leica Chiroptera 4X system. The data were acquired from 20210729 - 20220814. The data includes topobathy data in an LAS 1.4 format file classified as unclassified (1), ground (2), noise (7), water surface (topographic sensor) (9), high noise (18), bathymetric point (40), water surface (41), synthetic water surface (42), submerged feature (43) in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. This data set may also include lidar intensity values.
Distribution Information
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Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
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LAS/LAZ - LASer
Simple download of data files.
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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.
Controlled Theme Keywords
COASTAL BATHYMETRY, COASTAL ELEVATION, elevation, TOPOGRAPHICAL RELIEF MAPS
Child Items
Type | Title |
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Entity | NOAA NGS Topobathy Lidar Class Scheme: Gloucester, MA |
Contact Information
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-70.978° W,
-70.532° E,
42.7122° N,
42.4382° S
2021-07-29 - 2021-08-14
Item Identification
Title: | 2021 NOAA NGS Topobathy Lidar: Gloucester, MA |
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Status: | Completed |
Creation Date: | 2023 |
Abstract: |
These data were collected by the National Oceanic Atmospheric Administration National Geodetic Survey Remote Sensing Division using a Leica Chiroptera 4X system. The data were acquired from 20210729 - 20220814. The data includes topobathy data in an LAS 1.4 format file classified as unclassified (1), ground (2), noise (7), water surface (topographic sensor) (9), high noise (18), bathymetric point (40), water surface (41), synthetic water surface (42), submerged feature (43) in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. This data set may also include lidar intensity values. |
Purpose: |
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. It is not intended for mapping, charting, or navigation. In addition, it will be used for ongoing research efforts for testing and developing standards for airborne lidar. |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY > COASTAL BATHYMETRY
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
|
ISO 19115 Topic Category |
elevation
|
Spatial Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MASSACHUSETTS
|
Instrument Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Instrument Keywords |
LIDAR > Light Detection and Ranging
|
Platform Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Platform Keywords |
Airplane > Airplane
|
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Elevation |
Maintenance Frequency: | None Planned |
Data Presentation Form: | Model (digital) |
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. |
Data Set Credit: | We request that you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these data in a report, publication, or presentation. |
Support Roles
Data Steward
Date Effective From: | 2023 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Distributor
Date Effective From: | 2023 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Metadata Contact
Date Effective From: | 2023 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Originator
Date Effective From: | 2023 |
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Date Effective To: | |
Contact (Organization): | National Geodetic Survey (NGS) |
Address: |
1315 East-West Hwy Silver Spring, MD 20910 |
URL: | https://geodesy.noaa.gov/ |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -70.978 | |
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E° Bound: | -70.532 | |
N° Bound: | 42.7122 | |
S° Bound: | 42.4382 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2021-07-29 |
End: | 2021-08-14 |
Spatial Information
Spatial Representation
Representations Used
Vector: | Yes |
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Reference Systems
Reference System 1
Coordinate Reference System |
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Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
Data is available online for bulk and custom downloads. |
Data Access Constraints: |
None |
Data 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. |
Distribution Information
Distribution 1
Start Date: | 2023 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9963 |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2023 - Present) |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
File Type (Deprecated): | ZIP |
Compression: | Zip |
Distribution 2
Start Date: | 2023 |
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End Date: | Present |
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9963/index.html |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2023 - Present) |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
File Type (Deprecated): | LAZ |
Distribution Format: | LAS/LAZ - LASer |
Compression: | Zip |
URLs
URL 1
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9963/supplemental/extent_ngs_2021_gloucester_m9962.kmz |
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Name: | Browse Graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | kmz |
Description: |
This graphic shows the lidar footprint for this dataset. |
Technical Environment
Description: |
OS Independent |
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Data Quality
Vertical Positional Accuracy: |
Absolute accuracy was assessed using Non-Vegetated Vertical Accuracy (NVA) survey methods. Survey check points were evenly distributed as feasible throughout the project area. NVA compares known ground check point data that were withheld from the calibration and post-processing of the lidar point cloud to the triangulated surface generated by the ground classified lidar point cloud. NVA is a measure of the accuracy of lidar point data in open areas with level slope (less than 20 degrees) where the lidar system has a high probability of measuring the ground surface and is evaluated at the 95% confidence interval (1.96*RMSE). The non-vegetated vertical accuracy tested 0.065m at the 95% confidence interval. |
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Completeness Report: |
Data covers 1293 tiles (500m x 500m tiles). |
Conceptual Consistency: |
Not applicable |
Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
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Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
Do these Data Comply with the Data Access Directive?: | Yes |
Actual or Planned Long-Term Data Archive Location: | NCEI-CO |
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Data is backed up to tape and to cloud storage. |
Lineage
Sources
Acquisition and Processing
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | National Geodetic Survey |
Process Steps
Process Step 1
Description: |
Data were processed to an initial LAS format using the Leica Lidar Survey Studio (LSS) software. The NovAtel Inertial Explorer software was utilized for GPS and inertial processing. Water refraction correction was applied to returns below the water surface within LSS. Data were then combined into 500m x 500m tiles. GeoCue, Terrasolid, and LP360 software was used for data visualization, 3D editing, and export to final LAS file. Final data were exported in LAS 1.4 format in NAD83 (2011) horizontal and vertical datum. |
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Process Date/Time: | 2023-08-22 00:00:00 |
Process Contact: | National Geodetic Survey (NGS) |
Process Step 2
Description: |
The NOAA Office for Coastal Management (OCM) received files in laz format. The files contained lidar elevation and intensity measurements of Gloucester, MA. The data were in UTM Zone 19 coordinates and ellipsoid elevations in meters. OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. Converted from UTM Zone 18 to geographic coordinates 2. Sorted by gps time |
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Process Date/Time: | 2023-10-16 00:00:00 |
Process Contact: | Office for Coastal Management (OCM) |
Child Items
Rubric scores updated every 15m
Type | Title | |
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Entity | NOAA NGS Topobathy Lidar Class Scheme: Gloucester, MA |
Catalog Details
Catalog Item ID: | 71105 |
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GUID: | gov.noaa.nmfs.inport:71105 |
Metadata Record Created By: | Maryellen Sault |
Metadata Record Created: | 2023-10-13 11:55+0000 |
Metadata Record Last Modified By: | Blake Waring |
Metadata Record Last Modified: | 2023-11-01 18:26+0000 |
Metadata Record Published: | 2023-10-30 |
Owner Org: | NGS |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2022-04-11 |
Metadata Review Frequency: | 3 Years |
Metadata Next Review Date: | 2025-04-11 |