Short Citation:
Office for Coastal Management, 2021: 2013 NOAA Oahu Topographic Lidar, https://www.fisheries.noaa.gov/inport/item/48187.

Item Identification

Title: 2013 NOAA Oahu Topographic Lidar
Short Name: hi2013_noaa_oahu_m3655_metadata
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

Supplemental Information:

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

https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/3655/supplemental/hi2013_noaa_oahu_m3655.kmz .

A report documenting project notes is available at:

https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/3655/supplemental/hi2013_noaa_oahu_collectionreport_m3655.pdf .

A processing report for this project is available at: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/3655/supplemental/hi2013_noaa_oahu_surveyreport_m3655.pdf The LiDAR Quality Assurance Report is available at: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/3655/supplemental/hi2013_noaa_oahu_lidarreport_m3655.pdf

Keywords

Theme Keywords

Thesaurus Keyword
CoRIS Discovery Thesaurus Geographic Information > LiDAR
CoRIS Theme Thesaurus EARTH SCIENCE > Land Surface > Topography > Terrain Elevation
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
None Bathymetry/Topography
None Elevation
None LiDAR
None LiDAR LAS digital terrain model
None Model
None Surface
None Terrain

Spatial Keywords

Thesaurus Keyword
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)
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
None Hawaii
None Honolulu County
None Oahu
None US

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 files (NOAA OCM classes 1,2,7,9,10,17,18); 1) unclassified, 2) ground, 7) Low point (noise), 9) water, 10) ignored ground (within 10 ft of a breakline), 17) overlap unclassified, 18) overlap ground.

Entity Attribute Detail Citation:

All deliverables meet specifications in contract. LAS Files meet ASPRS Classification Standards.

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: 624071
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: 624073
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: 624074
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: 624072
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: 624077
W° Bound: -158.294904
E° Bound: -157.645193
N° Bound: 21.727501
S° Bound: 21.251804

Extent Group 1 / Time Frame 1

CC ID: 624076
Time Frame Type: Range
Start: 2013-06-01
End: 2013-08-09

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=3655

The data set is dynamically generated based on user-specified parameters.;

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

Distribution Information

Distribution 1

CC ID: 743860
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=3655
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: 743861
Download URL: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/3655
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 743863
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 743864
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 3

CC ID: 743865
URL: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/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.

Activity Log

Activity Log 1

CC ID: 624100
Activity Date/Time: 2017-08-01
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 624099
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: 717863
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 743862
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: 624060
Contact Name: Photo Science, Inc.
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: 624061
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: 624062
Description:

The NOAA Office for Coastal Management (OCM) received the files in laz format via hard drive from PhotoScience, Inc. The data arrived referenced to the Universal Transverse Mercator (UTM) Zone 4 projection and vertical elevations were in ellipsoidal values.

1. The data were converted from projected coordinates to geographic coordinates.

2. Originally delivered as class 25 points (Overlap water) were merged into class 9.

Process Date/Time: 2014-05-02 00:00:00

Process Step 3

CC ID: 624063
Description:

After review by USGS, a revised version of the data was delivered to OCM. The data were revised to change classifications in bridge/culvert locations.

1. Data were updated to change bridge/culvert from Class 2 (ground) to Class 1 (unclassified).

Process Date/Time: 2015-03-15 00:00:00

Catalog Details

Catalog Item ID: 48187
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 14:19+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-07-02 15:17+0000
Metadata Record Published: 2018-03-13
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2019-03-14