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Catalog Details

Summary

Browse Graphic

Short Citation
OCM Partners, 2024: 2013 USACE NCMP Topobathy Lidar: Molokai (HI), https://www.fisheries.noaa.gov/inport/item/49753.
Full Citation Examples

Abstract

These files contain classified topo/bathy lidar data. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data). Classes 1 and 2 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. These data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis.

Horizontal positions, provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 National Adjustment of 2011 (NAD83 PA11).

Vertical positions are referenced to the (NAD83 PA11) ellipsoid and provided in meters. The 3-D position data are sub-divided into a series of LAS files, which are tiled into quarter-quads or 5km boxes. In addition to the lidar point data, Digital Elevation Models (DEMs), created from the lidar point data are also available. DEMs were created from all classes of points (1, 2, 29) at a 1 meter grid size and bare earth DEMs were created from the ground and bathymetric data classes (2, 29) at a 1 meter grid size. These products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM. The data are available upon request via email at: coastal.info@noaa.gov. Please provide the name of the data set and "DEM Request" in the subject line.

The FTP versions of the LAZ files have GPS-derived orthometric heights. To adjust to the Local Mean Sea Level (LMSL) use the folloing value to correct the vertical heights: -0.601 m.

Distribution Information

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

  • Simple download of data files.

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

elevation

Child Items

No Child Items for this record.

Contact Information

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov

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

Extents

Geographic Area 1

-157.32792° W, -156.69697° E, 21.23425° N, 21.03179° S

Time Frame 1
2013-10-09 - 2013-11-15

Item Identification

Title: 2013 USACE NCMP Topobathy Lidar: Molokai (HI)
Short Name: hi2013_usace_ncmp_molokai_m5015_metadata
Status: Completed
Publication Date: 2016-03-11
Abstract:

These files contain classified topo/bathy lidar data. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data). Classes 1 and 2 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. These data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis.

Horizontal positions, provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 National Adjustment of 2011 (NAD83 PA11).

Vertical positions are referenced to the (NAD83 PA11) ellipsoid and provided in meters. The 3-D position data are sub-divided into a series of LAS files, which are tiled into quarter-quads or 5km boxes. In addition to the lidar point data, Digital Elevation Models (DEMs), created from the lidar point data are also available. DEMs were created from all classes of points (1, 2, 29) at a 1 meter grid size and bare earth DEMs were created from the ground and bathymetric data classes (2, 29) at a 1 meter grid size. These products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM. The data are available upon request via email at: coastal.info@noaa.gov. Please provide the name of the data set and "DEM Request" in the subject line.

The FTP versions of the LAZ files have GPS-derived orthometric heights. To adjust to the Local Mean Sea Level (LMSL) use the folloing value to correct the vertical heights: -0.601 m.

Purpose:

These data were collected as a part of the NCMP to depict the elevations above and below the water in the Hawaii coastal zone.

Notes:

10397

Supplemental Information:

A footprint of this data set may be viewed in Google Earth at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/5015/supplemental/hi2013_usace_ncmp_molokai_m5015.kmz

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation
UNCONTROLLED
CoRIS Discovery Thesaurus lidar
CoRIS Theme Thesaurus EARTH SCIENCE > Land Surface > Topography> Terrain Elevation
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
NOAA NOS Harvest Catalog CoRIS
None IWG-OCM
None National Coastal Mapping Program (NCMP)
None U.S. Army Corps of Engineers (USACE)

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2013
None December
None November

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Molokai Island (21N157W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Molokai Island > Molokai Island (21N157W0001)

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Entity Attribute Overview:

LAS 1.2 format (classes 1,2,29)

Entity Attribute Detail Citation:

none

Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of JALBTCX, the Office for Coastal Management or its partners.

Data Set Credit: Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) would be appreciated in any publications or derived products.

Support Roles

Data Steward

CC ID: 675571
Date Effective From: 2016-03-11
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: 675573
Date Effective From: 2016-03-11
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: 675574
Date Effective From: 2016-03-11
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

Point of Contact

CC ID: 675572
Date Effective From: 2016-03-11
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

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1137704
W° Bound: -157.32792
E° Bound: -156.69697
N° Bound: 21.23425
S° Bound: 21.03179

Extent Group 1 / Time Frame 1

CC ID: 1137703
Time Frame Type: Range
Start: 2013-10-09
End: 2013-11-15

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=5015;

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: 741146
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=5015
Distributor:
File Name: Customized Download
Description:

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

Distribution 2

CC ID: 741147
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/5015/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 741149
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 741150
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 3

CC ID: 741151
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/5015/supplemental/hi2013_usace_ncmp_molokai_m5015.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar coverage for the 2013 JALBTCX topobathy project along the shores of Molokai.

Activity Log

Activity Log 1

CC ID: 675604
Activity Date/Time: 2016-09-12
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 675603
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718313
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741148
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:

These data are not attributed. | Quantitative Value: N/A | Quantitative Test Explanation: These data are not attributed.

Horizontal Positional Accuracy:

Topo data - Compiled to meet 1 m @ 95% confidence level. Bathy data - compiled to meet 3.5 + 0.05*d m @ 95% confidence level (d is depth).

Vertical Positional Accuracy:

Topo data - 19.6 cm @ 95% confidence level (10 cm RMSE). Bathy shallow FOV data - SQRT((0.25^2)+((0.0075d)^2)) m at @ 95% confidence level. Bathy deep FOV data - SQRT((0.30^2)+((0.013d)^2)) m @ 95% confidence level (d is depth).

Completeness Report:

This data set covers the spatial extent of topographic lidar data obtained during this survey.

Conceptual Consistency:

During inspection and QC of the lidar point cloud, flightline to flightline elevation differences met the CZMIL sensor specifications.

Lineage

Process Steps

Process Step 1

CC ID: 1137699
Description:

These data were collected using the CZMIL system. It is owned and operated by the U.S. Army Corps of Engineers (USACE). The system collects topobathy lidar data at 10 kHz and RGB imagery at 2 Hz. A CASI-1500 hyperspectral line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and POS A/V 510 equipment. All raw data streams are transferred to the office for downloading and processing in CZMIL's Hydro Fusion software. Aircraft position data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. Upon inspection and QA/QC in the software packages Fledermaus and PFM_ABE, anomalous data are flagged as invalid and have the withheld bit set.

Process Date/Time: 2013-10-16 00:00:00

Process Step 2

CC ID: 1137700
Description:

LAS files are imported into GeoCue V2014.1.21.1, which is a geospatial workflow production and management software tool employed by JALBTCX to perform and monitor production of data products. Upon import into GeoCue, a customized classification macro, built upon the TerraScan V13 module within Microstation V8i, classifies valid topobathy data as ground points (2) and unclassified points (1), and valid bathymetric points (29). Upon completion the macro, the classification results undergo quality control and any misclassified points are manually edited. In areas of dense vegetation the bare earth ground points might be incorrectly classified due to the inability of the laser to penetrate the canopy and reach the bare ground. In these areas, JALBTCX defaults to the algorithm's "ground" surface instead of manually reclassifying those points. They are partitioned into a series of 5km or quarter quad delivery boxes, one Classified LAS file per box. The format of the file is LAS version 1.2. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data).

Process Date/Time: 2015-12-16 00:00:00

Process Step 3

CC ID: 1137701
Description:

The NOAA Office for Coastal Management (OCM) received files in las format from JALBTCX. The files contained LiDAR intensity and elevation measurements and derived products for the island of Molokai. OCM performed the following processing on the data for storage purposes and to make it available within Digital Coast:

1. The LAS files were processed to remove outlier points but maintained original projections information. Tiles were delivered horizontally referenced to geographic coordinate system (decimal degress) and vertical heights were referenced to the Hawaiian ellipsoid in meters.

The FTP versions of the LAZ files have GPS-derived orthometric heights. To adjust to the Local Mean Sea Level (LMSL) use the following value to correct the vertical heights: -0.601 m.

Process Date/Time: 2016-03-09 00:00:00

Catalog Details

Catalog Item ID: 49753
GUID: gov.noaa.nmfs.inport:49753
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:22+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2022-03-16
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-03-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-03-16