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NGS Metadata Library > NGS Lidar >

2021 NOAA NGS Topobathy Lidar: Fisherman Island to Chincoteague, Virginia

Data Set (DS)  |  National Geodetic Survey (NGS)
GUID: gov.noaa.nmfs.inport:71095  |  Updated: November 8, 2023  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Tech Environment
Data Quality
Data Management
Lineage
Child Items
Catalog Details

Summary

Browse Graphic

Short Citation
National Geodetic Survey, 2024: 2021 NOAA NGS Topobathy Lidar: Fisherman Island to Chincoteague, Virginia, https://www.fisheries.noaa.gov/inport/item/71095.
Full Citation Examples

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 20210327 - 20210913. 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

  • LAS/LAZ - LASer

    Simple download of data files.

  • Not Applicable

    Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Access Constraints:

None

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

Controlled Theme Keywords

COASTAL BATHYMETRY, COASTAL ELEVATION, elevation, TOPOGRAPHICAL RELIEF MAPS

Child Items

Type Title
Entity NOAA NGS Topobathy Lidar Class Scheme: Fisherman Island to Chincoteague, Virginia

Contact Information

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-75.99° W, -75.216° E, 38.033° N, 37.029° S

Time Frame 1
2021-03-27 - 2021-09-13

Item Identification

Title: 2021 NOAA NGS Topobathy Lidar: Fisherman Island to Chincoteague, Virginia
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 20210327 - 20210913. 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 > VIRGINIA

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

Data Set Information

Data Set Scope Code: Data Set
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

CC ID: 1276211
Date Effective From: 2023
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

CC ID: 1276212
Date Effective From: 2023
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

CC ID: 1276213
Date Effective From: 2023
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

CC ID: 1276214
Date Effective From: 2023
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

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1276231
W° Bound: -75.99
E° Bound: -75.216
N° Bound: 38.033
S° Bound: 37.029

Extent Group 1 / Time Frame 1

CC ID: 1276230
Time Frame Type: Range
Start: 2021-03-27
End: 2021-09-13

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Reference Systems

Reference System 1

CC ID: 1276225

Coordinate Reference System
CRS Type: Geographic 3D
EPSG Code: EPSG:6319
EPSG Name: NAD83(2011)
▾ See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
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

CC ID: 1276216
Start Date: 2023
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9931/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: LAZ

Distribution 2

CC ID: 1276215
Start Date: 2022
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9931
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
Distribution Format: Not Applicable
Compression: Zip

URLs

URL 1

CC ID: 1276220
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9931/supplemental/extent_ngs_va_easternShore_topobathy_m9931.kmz
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

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°) 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 0.093m at the 95% confidence interval.

Completeness Report:

Data covers 8383 tiles (500m x 500m tiles).
Conceptual Consistency:

Not applicable

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
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

CC ID: 1276226
Contact Role Type: Originator
Contact Type: Organization
Contact Name: National Geodetic Survey

Process Steps

Process Step 1

CC ID: 1276227
Description:

These data was acquired by NOAA using a Leica Chiroptera 4X topobathymetric lidar system. 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: 2023-10-10 00:00:00
Process Contact: National Geodetic Survey (NGS)

Process Step 2

CC ID: 1276228
Description:

The NOAA Office for Coastal Management (OCM) received files in laz format. The files contained lidar elevation and intensity measurements from Fisherman Island to Chincoteague, Virginia. The data were in UTM Zone 18 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)

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity NOAA NGS Topobathy Lidar Class Scheme: Fisherman Island to Chincoteague, Virginia

Catalog Details

Catalog Item ID: 71095
GUID: gov.noaa.nmfs.inport:71095
Metadata Record Created By: Maryellen Sault
Metadata Record Created: 2023-10-12 11:24+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2023-11-08 15:47+0000
Metadata Record Published: 2023-10-26
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