2021 NOAA NGS Topobathy Lidar: Gloucester, MA
National Geodetic Survey
Data Set
(DS)
| ID: 71105
| Published / External
Created: 2023-10-13
|
Last Modified: 2023-11-01
Project (PRJ) | ID: 59025
ID: 71105
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
| * » Title | 2021 NOAA NGS Topobathy Lidar: Gloucester, MA |
|---|---|
| Short Name | |
| * Status | Completed |
| Creation Date | 2023 |
| Revision Date | |
| • Publication Date | |
| * » 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. |
| Notes | |
| Other Citation Details | |
| • Supplemental Information | |
| DOI (Digital Object Identifier) | |
| DOI Registration Authority | |
| DOI Issue Date |
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 |
Temporal Keywords
| Thesaurus | Keyword |
|---|---|
* Spatial Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Location Keywords | CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MASSACHUSETTS |
Stratum Keywords
| Thesaurus | Keyword |
|---|---|
Instrument Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Instrument Keywords | LIDAR > Light Detection and Ranging |
Platform Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Platform Keywords | Airplane > Airplane |
Physical Location
| • » Organization | Office for Coastal Management |
|---|---|
| • » City | Charleston |
| • » State/Province | SC |
| • Country | |
| • » Location Description |
Data Set Information
| * Data Set Scope Code | Data Set |
|---|---|
| • Data Set Type | Elevation |
| • Maintenance Frequency | None Planned |
| Maintenance Note | |
| » Data Presentation Form | Model (digital) |
| • Entity Attribute Overview | |
| Entity Attribute Detail Citation | |
| Entity Attribute Detail URL | |
| 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
| * » Support Role | Data Steward |
|---|---|
| * » Date Effective From | 2023 |
| Date Effective To | |
| 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 |
| Fax | |
| Mobile | |
| URL | https://coast.noaa.gov |
| Business Hours | |
| Contact Instructions |
| * » Support Role | Distributor |
|---|---|
| * » Date Effective From | 2023 |
| Date Effective To | |
| 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 |
| Fax | |
| Mobile | |
| URL | https://coast.noaa.gov |
| Business Hours | |
| Contact Instructions |
| * » Support Role | Metadata Contact |
|---|---|
| * » Date Effective From | 2023 |
| Date Effective To | |
| 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 |
| Fax | |
| Mobile | |
| URL | https://coast.noaa.gov |
| Business Hours | |
| Contact Instructions |
| * » Support Role | Originator |
|---|---|
| * » Date Effective From | 2023 |
| Date Effective To | |
| Organization | National Geodetic Survey (NGS) |
| Address |
1315 East-West Hwy Silver Spring, MD 20910 |
| Email Address | |
| Phone | |
| Fax | |
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| URL | https://geodesy.noaa.gov/ |
| Business Hours | |
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Extents
| Currentness Reference | Ground Condition |
|---|
Extent Group 1
| Extent Description |
|---|
Extent Group 1 / Geographic Area 1
| * » W° Bound | -70.978 |
|---|---|
| * » E° Bound | -70.532 |
| * » N° Bound | 42.7122 |
| * » S° Bound | 42.4382 |
| * » Description |
Extent Group 1 / Vertical Extent
| EPSG Code | |
|---|---|
| Vertical Minimum | |
| Vertical Maximum |
Extent Group 1 / Time Frame 1
| * » Time Frame Type | Range |
|---|---|
| * » Start | 2021-07-29 |
| End | 2021-08-14 |
| Alternate Start As Of Info | |
| Alternate End As Of Info | |
| Description |
Spatial Information
Spatial Resolution
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Spatial Representation
| Grid Representation Used? | |
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| Vector Representation Used? | Yes |
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Vector Representation
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Reference Systems
Reference System
| EPSG Code | EPSG:6319 | ||||||||||||||||||||||||||||
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Access Information
| Data License | |
|---|---|
| Data License URL | |
| Data License Statement | |
| * » Security Class | Unclassified |
| * Security Classification System | |
| Security Handling Description | |
| • Data Access Policy | |
| » 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. |
| Metadata Access Constraints | |
| Metadata Use Constraints |
Distribution Information
| Start Date | 2023 |
|---|---|
| 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 Date/Time | |
| File Type (Deprecated) | ZIP |
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| File Size | |
| Application Version | |
| Compression | Zip |
| Review Status |
| Start Date | 2023 |
|---|---|
| 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 Date/Time | |
| File Type (Deprecated) | LAZ |
| Distribution Format | LAS/LAZ - LASer |
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| Compression | Zip |
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Archive Information
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URLs
| URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9963/supplemental/extent_ngs_2021_gloucester_m9962.kmz |
|---|---|
| Name | Browse Graphic |
| URL Type | Browse Graphic |
| File Resource Format | kmz |
| Description |
This graphic shows the lidar footprint for this dataset. |
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Activity Log
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Issues
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Technical Environment
| Description |
OS Independent |
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Data Quality
| Representativeness | |
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| Accuracy | |
| Analytical Accuracy | |
| Horizontal Positional Accuracy | |
| 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 |
| » Quality Control Procedures Employed |
Data Management
| » Have Resources for Management of these Data Been Identified? | Yes |
|---|---|
| » Approximate Percentage of Budget for these Data Devoted to Data Management | Unknown |
| » Do these Data Comply with the Data Access Directive? | Yes |
| » Is Access to the Data Limited Based on an Approved Waiver? | |
| » If Distributor (Data Hosting Service) is Needed, Please Indicate | |
| » Approximate Delay Between Data Collection and Dissemination | |
| » If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed | |
| » Actual or Planned Long-Term Data Archive Location | NCEI-CO |
| » Approximate Delay Between Data Collection and Archiving | |
| » 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
| » Lineage Statement |
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Sources
| Citation Title | Acquisition and Processing |
|---|---|
| Contact Role Type | Originator |
| Contact Type | Organization |
| Contact Name | National Geodetic Survey |
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Process Steps
| Process Step Number | 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. |
| Process Date/Time | 2023-08-22 00:00:00 |
| Process Contact | National Geodetic Survey (NGS) |
| Phone (Voice) | |
| Email Address | |
| Source |
| Process Step Number | 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 |
| Process Date/Time | 2023-10-16 00:00:00 |
| Process Contact | Office for Coastal Management (OCM) |
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Acquisition Information
Instruments
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Platforms
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FAQs
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Child Items
Rubric scores updated every 15m
| Score | Type | Title |
|---|---|---|
| Entity (ENT) | NOAA NGS Topobathy Lidar Class Scheme: Gloucester, MA | |
Related Items
| Item Type | Relationship Type | Title |
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Catalog Details
| Catalog Item ID | 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 Workflow State | Published / External |
| Metadata Last Review Date | 2022-04-11 |
| Metadata Review Frequency | 3 Years |
| Metadata Next Review Date | 2025-04-11 |
| Tags |
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