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Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Activity Log
Data Quality
Lineage
Related Items
Catalog Details

Summary

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Short Citation
Office for Coastal Management, 2024: 2013 Topographic Lidar DEM: Oahu, https://www.fisheries.noaa.gov/inport/item/52020.
Full Citation Examples

Abstract

The Oahu, Hawaii Elevation Data Task Order involves collecting and delivering topographic elevation point data derived from multiple return light detection and ranging (LiDAR) measurements on the island of Oahu in Hawaii. The Statement of Work (SOW) for the area covering the northern 2/3 of Oahu was developed by the National Oceanic and Atmospheric Administration's (NOAA) Office for Coastal Management. A separate but related task order was issued by the USGS National Geospatial Technical Operations Center (NGTOC), under their Geospatial Products and Services Contract (GPSC), to leverage the same resources committed to the NOAA LiDAR project for the acquisition of LiDAR data in the southern 1/3 portion of Oahu. The combined task orders yielded one study area covering the entire island of Oahu. The data collected for the island of Oahu will exhibit Hydro Flattened DEMs for inclusion into the NED. The purpose of the data is for use in coastal management decision making, including applications such as flood plain mapping and water rights management. The point density for this data set was specified in the SOW at 1.15 pts/m2. The NOAA Office for Coastal Management tested the NPS (nominal pulse spacing) for this data set in April 2015. The NPS was determined to be 0.84 m. The data used in the NPS determination were the first returns of classes 1,2,9, and 10.

Distribution Information

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

  • IMG - ERDAS Imagine

    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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. These data depict the heights at the time of the survey and are only accurate for that time.

This data is in the public domain.

Controlled Theme Keywords

COASTAL ELEVATION, elevation, SEAFLOOR TOPOGRAPHY, TOPOGRAPHICAL RELIEF MAPS

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

-158.294904° W, -157.645193° E, 21.727501° N, 21.251804° S

Time Frame 1
2013-06-01 - 2013-08-09

Item Identification

Title: 2013 Topographic Lidar DEM: Oahu
Short Name: 2013 Oahu DEM m8497
Status: Completed
Publication Date: 2015-04-14
Abstract:

The Oahu, Hawaii Elevation Data Task Order involves collecting and delivering topographic elevation point data derived from multiple return light detection and ranging (LiDAR) measurements on the island of Oahu in Hawaii. The Statement of Work (SOW) for the area covering the northern 2/3 of Oahu was developed by the National Oceanic and Atmospheric Administration's (NOAA) Office for Coastal Management. A separate but related task order was issued by the USGS National Geospatial Technical Operations Center (NGTOC), under their Geospatial Products and Services Contract (GPSC), to leverage the same resources committed to the NOAA LiDAR project for the acquisition of LiDAR data in the southern 1/3 portion of Oahu. The combined task orders yielded one study area covering the entire island of Oahu. The data collected for the island of Oahu will exhibit Hydro Flattened DEMs for inclusion into the NED. The purpose of the data is for use in coastal management decision making, including applications such as flood plain mapping and water rights management. The point density for this data set was specified in the SOW at 1.15 pts/m2. The NOAA Office for Coastal Management tested the NPS (nominal pulse spacing) for this data set in April 2015. The NPS was determined to be 0.84 m. The data used in the NPS determination were the first returns of classes 1,2,9, and 10.

Purpose:

Lifts are planned to meet project specifications and are flown under cloud-free conditions in order to collect LIDAR points at an average of 1.0 meter point spacing. This allows the user to create Intensity Images, Break Lines, Hydro Flattened DEMs and fully Classified LiDAR LAS files.

Notes:

10210

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 > SEAFLOOR TOPOGRAPHY
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
ISO 19115 Topic Category
elevation
UNCONTROLLED
CoRIS Discovery Thesaurus Geographic Information > LiDAR
CoRIS Theme Thesaurus EARTH SCIENCE > Land Surface > Topography > Terrain Elevation
None Surface
None Terrain

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > HAWAII
Global Change Master Directory (GCMD) Location Keywords
OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > HAWAIIAN ISLANDS > OAHU
UNCONTROLLED
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)

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
Distribution Liability:

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

Data Set Credit: Photo Science, Inc. acquired and post-processed the LiDAR for the island of Oahu in Hawaii.

Support Roles

Data Steward

CC ID: 744091
Date Effective From: 2015-04-14
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: 744093
Date Effective From: 2015-04-14
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: 744094
Date Effective From: 2015-04-14
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: 744092
Date Effective From: 2015-04-14
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: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1290640
W° Bound: -158.294904
E° Bound: -157.645193
N° Bound: 21.727501
S° Bound: 21.251804

Extent Group 1 / Time Frame 1

CC ID: 1290639
Time Frame Type: Range
Start: 2013-06-01
End: 2013-08-09

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Grid Representation 1

CC ID: 1071787
Dimension Count: 2
Cell Geometry: Point
Transformation Parameters Available?: Yes

Axis Dimension 1

Dimension Type: Column
Size: 66857
Resolution Type: Length
Resolution: 1.0 Meter

Reference Systems

Reference System 1

CC ID: 1290637

Coordinate Reference System

CRS Type: Compound Engineering
EPSG Code: EPSG:6634
EPSG Name: NAD83(PA11) / UTM zone 4N
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
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. These data depict the heights at the time of the survey and are only accurate for that time.

This data is in the public domain.

Distribution Information

Distribution 1

CC ID: 744095
Start Date: 2018-03-13
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8497
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2015-04-14 - Present)
File Name: Customized Download
Description:

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

File Type (Deprecated): Zip
Compression: Zip

Distribution 2

CC ID: 744096
Start Date: 2018-03-13
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/NOAA_Oahu_DEM_2013_8497/index.html
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2015-04-14 - Present)
File Name: Bulk Download
Description:

Simple download of data files.

File Type (Deprecated): IMG
Distribution Format: IMG - ERDAS Imagine

URLs

URL 1

CC ID: 744097
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/3655/supplemental/hi2013_noaa_oahu_surveyreport_m3655.pdf
Name: Survey Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Report of the ground survey supporting this collection.

URL 2

CC ID: 744098
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/3655/supplemental/hi2013_noaa_oahu_collectionreport_m3655.pdf
Name: Collection Report
URL Type:
Online Resource
File Resource Format: PDF
Description:

Project report from the contractor.

URL 3

CC ID: 744099
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/3655/supplemental/hi2013_noaa_oahu_m3655.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar coverage for the 2013 collection of topographic lidar in Oahu.

URL 4

CC ID: 1071785
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/3655/supplemental/hi2013_noaa_oahu_lidarreport_m3655.pdf
Name: Quality Assurance Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

QA report assessing the lidar data used to create this DEM.

Activity Log

Activity Log 1

CC ID: 744101
Activity Date/Time: 2017-08-01
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 744100
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: 744102
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 744103
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Horizontal Positional Accuracy:

The LiDAR data was compiled to meet a 1 meter horizontal accuracy. The calibration of the LiDAR sensor itself and the calibration process of the data produced by this sensor ensure that this accuracy is met.; Quantitative Value: 1.0 meters, Test that produced the value: Value stated in meters

Vertical Positional Accuracy:

The classified LiDAR data was tested by Photo Science, Inc. for vertical accuracy. Photo Science collected a total of 42 ground control points for use in verifying the vertical accuracy of the classified LiDAR data on the island of Oahu in Hawaii. These points were tested against the classified LiDAR data and a vertical adjustment was made to the classified LiDAR for each county in order to obtain a higher level of accuracy. All data are seamless from one tile to the next, no gaps or no data areas. The vertical unit of the data file is in meters with 2-decimal point precision. The Photo Science tested vertical accuracy for this data set was 8.7 cm RMSEz. An independent accuracy assessment was also done. NOAA OCM collected check points for the vertical accuracy determination. These points were then provided to Dewberry, who completed an independent accuracy assessment. The results of the independent assessment resulted in a FVA (Fundamental Vertical Accuracy) of 19.8 cm or an RMSEz of 10.1 cm.; Quantitative Value: 0.101 meters, Test that produced the value: The RMSEz for this data set is 10.1 cm as determined in the independent vertical assessment performed by Dewberry. The Fundamental vertical accuracy (FVA) was determined to be 19.8 cm in bare earth-open terrain areas. Consolidated vertical accuracy (CVA) of 26.8 cm in all classifications. And Supplemental Vertical Accuracy (SVA) of 25 cm for urban land covers and 33.2 cm in vegetative land covers.

Completeness Report:

Datasets contain complete coverage of tiles

Conceptual Consistency:

Deliverables were tested by Photo Science, Inc. for vertical accuracy. All data are seamless from one tile to the next, no gaps or no data areas.

Lineage

Sources

LiDAR

CC ID: 1290632
Publish Date: 2013-01-01
Extent Type: Range
Extent Start Date/Time: 2013-06-01
Extent End Date/Time: 2013-08-09
Source Contribution:

LiDAR points were used to produce the deliverables. | Source Geospatial Form: digital data | Type of Source Media: Hard Drive

Process Steps

Process Step 1

CC ID: 1290633
Description:

Applanix software was used in the post processing of the airborne GPS and inertial data that is critical to the positioning and orientation of the sensor during all flights. POSPac MMS provides the smoothed best estimate of trajectory (SBET) that is necessary for Optech's post processor to develop the point cloud from the LiDAR missions. The point cloud is the mathematical three dimensional collection of all returns from all laser pulses as determined from the aerial mission. At this point this data is ready for analysis, classification, and filtering to generate a bare earth surface model in which the above ground features are removed from the data set. The point cloud was manipulated within the Optech or Leica software; GeoCue, TerraScan, and TerraModeler software was used for the automated data classification, manual cleanup, and bare earth generation from this data. Project specific macros were used to classify the ground and to remove the side overlap between parallel flight lines.

All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler.

Class 2 LIDAR was used to create a bare earth surface model. The surface model was then used to heads-up digitize 2D breaklines of inland streams and rivers. Inland Ponds and Lakes of 2 acres or greater were also collected.

Elevation values were assigned to all Inland Ponds and Lakes using TerraModeler functionality.

Elevation values were assigned to all Inland Streams and Rivers using Photo Science proprietary software.

All Class 2 LIDAR data falling inside of the collected breaklines were then classified to Class 9 and Class 2 LIDAR data falling within a proximity of one meter will be classified to Class 10 using TerraScan macro functionality.

The breakline files were translated to ESRI Shapefile format using ESRI conversion tools.

Data was then run through additional macros to ensure deliverable classification levels matching LAS ASPRS Classification structure. GeoCue functionality was used to ensure correct LAS Version. In house software was used as a final QA/QC check to provide LAS Analysis of the delivered tiles.

Tiles were run through automated scripting within ArcMap and were combined with the Hydro Flattened Breaklines to create the 1 meter DEM. Final DEM tiles were clipped to the tile boundary in order to provide a seamless dataset.

A manual QA review of the tiles was completed in ArcMap and Global Mapper to ensure full coverage with no gaps or slivers within the project area.

Process Date/Time: 2013-01-01 00:00:00
Source: LiDAR

Process Step 2

CC ID: 1290634
Description:

The NOAA Office for Coastal Management (OCM) received the DEM files in img format via hard drive from PhotoScience, Inc. Data were ingested into the Digital Coast Data Access Viewer.

Process Date/Time: 2018-03-13 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov

Process Step 3

CC ID: 1290635
Description:

DEM data were found to be tagged with NAD83(2011) UTM zone 4, which is valid for Alaska. The proper tag should have been NAD83(PA11) UTM zone 4. The proper tagging was added and the data was converted to cloud optimized Tiff format at the same time. Note that the tagging does not have a vertical component, though the data are in ellipsoid heights.

Process Date/Time: 2021-07-08 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2013 NOAA Oahu Topographic Lidar

Point cloud from which the DEMs were generated.

Catalog Details

Catalog Item ID: 52020
GUID: gov.noaa.nmfs.inport:52020
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2018-03-13 15:35+0000
Metadata Record Last Modified By: Kirk Waters
Metadata Record Last Modified: 2024-01-10 19:00+0000
Metadata Record Published: 2024-01-10
Owner Org: OCM
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