2000 USACE Bathymetric LiDAR: Hawaiian Islands

Title:	2000 USACE Bathymetric LiDAR: Hawaiian Islands
Short Name:	hi2000_usace_hawaii_m1458_metadata
Status:	Completed
Publication Date:	2013-03
Abstract:	These data were collected by the SHOALS (Scanning Hydrographic Operational Airborne Lidar Survey) system which consists of an airborne laser transmitter/receiver capable of measuring 400 soundings per second. The system operates from a deHavilland DHC-6 Twin Otter flying at altitudes between 200 and 400 meters with a ground speed of about 100 knots. The SHOALS system also includes a ground-based data processing system for calculating acurate horizontal position and water depth. Lidar is an acronym for LIght Detection And Ranging. The system operates by emitting a pulse of light that travels from an airborne platform to the water surface where a small portion of the laser energy is backscattered to the airborne receiver. The remaining energy at the water's surface propogates through the water column and reflects off the sea bottom and back to the airborne detector. The time difference between the surface return and the bottom return corresponds to water depth. The maximum depth the system is able to sense is related to the complex interaction of radiance of bottom material, incident sun angle and intensity, and the type and quantity of organics or sediments in the water column. As a rule-of-thumb, the SHOALS system should be capable of sensing bottom to depths equal to two or three times the Secchi depth. Original contact information: Contact Org: U.S. Army Corps of Engineers JALBCTX Phone: 251-690-3467
Purpose:	The purpose of the survey was to collect and map data from the shoreline to -30m depths.
Notes:	10384
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/mllw/1458/supplemental/hi2000_usace_footprint.kmz

Keywords

Theme Keywords

Theme Keywords
Thesaurus	Keyword
ISO 19115 Topic Category	elevation
UNCONTROLLED
None	Hydrographic Survey

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
Data Presentation Form:	las
Entity Attribute Overview:	LiDAR points in LAS 1.2 format
Entity Attribute Detail Citation:	none
Distribution Liability:	Any conclusions drawn from the analysis of this information are not the responsibility of JALBCTX, NOAA, the Office for Coastal Management or its partners.
Data Set Credit:	U.S. Army Engineer Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBCTX)

Support Roles

Data Steward

CC ID: 674948

Date Effective From:	2013-03
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: 674950

Date Effective From:	2013-03
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: 674951

Date Effective From:	2013-03
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: 674949

Date Effective From:	2013-03
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: 1133522

W° Bound:	-158.275
E° Bound:	-154.803683
N° Bound:	21.718898
S° Bound:	18.90012

Extent Group 1 / Time Frame 1

CC ID: 1133521

Time Frame Type:	Discrete
Start:	2000-11

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=1458 ;
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: 741068

Download URL:	https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1458
Distributor:	NOAA Office for Coastal Management (NOAA/OCM) (2013-03 - 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
Compression:	Zip

Distribution 2

CC ID: 741069

Download URL:	https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/mllw/1458/index.html
Distributor:	NOAA Office for Coastal Management (NOAA/OCM) (2013-03 - Present)
File Name:	Bulk Download
Description:	Simple download of data files.
File Type (Deprecated):	LAZ
Distribution Format:	LAS/LAZ - LASer
Compression:	Zip

URLs

URL 1

CC ID: 741071

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

URL 2

CC ID: 741072

URL:	https://coast.noaa.gov
URL Type:	Online Resource

URL 3

CC ID: 741073

URL:	https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/mllw/1458/supplemental/hi2000_usace_footprint.kmz
Name:	Browse Graphic
URL Type:	Browse Graphic
File Resource Format:	kmz
Description:	This graphic shows the lidar coverage for coastal regions of Oahu, Moloka'i, Lana'i and Hawaii (Big Island) in the state of Hawaii.

Activity Log

Activity Log 1

CC ID: 674968

Activity Date/Time:	2016-05-23
Description:	Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 674967

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: 718300

Activity Date/Time:	2018-02-08
Description:	Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741070

Activity Date/Time:	2018-03-13
Description:	Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:	SHOALS has demonstrated capabilities that meet US Army Corps of Engineers Hydrographic Survey accuracy requirements for Class 1 surveys and the International Hydrographic Organization nautical charting standards for Order 1.
Horizontal Positional Accuracy:	+/- 3 meters (1 sigma); Quantitative Value: 3.0 meters, Test that produced the value: Not tested, compiled to meet value (meters) at 1 sigma (1 standard deviation).
Vertical Positional Accuracy:	+/- 15 cm (1 sigma); Quantitative Value: 0.15 meters, Test that produced the value: Collected to meet value (meters) at 1 sigma (1 standard deviation)
Completeness Report:	N/A
Conceptual Consistency:	N/A

Lineage

Process Steps

Process Step 1

CC ID: 1133518

Description:	The SHOALS airborne system acquires a tremendous volume of raw data during a single mission. The lidar data are unique and require a specialized Data Processing System (DPS) for post-processing. The DPS main funcions 1) import airborne data stored on high density data tape; 2) perform quality control checks on initial depths and horizontal positions; 3) provide display and edit capabilities; 4) calculate depth and position (XYZ) values for each sounding; and 5) output final positions and depths for each sounding.
Process Date/Time:	2000-12-01 00:00:00

Description:

The SHOALS airborne system acquires a tremendous volume of raw data during a single mission. The lidar data are unique and require a specialized Data Processing

System (DPS) for post-processing. The DPS main funcions 1) import airborne data stored on high density data tape; 2) perform quality control checks on initial

depths and horizontal positions; 3) provide display and edit capabilities; 4) calculate depth and position (XYZ) values for each sounding; and 5) output final positions

and depths for each sounding.

Process Date/Time:

2000-12-01 00:00:00

Process Step 2

CC ID: 1133519

Description:	The NOAA Office for Coastal Management (OCM) received topographic files in ASCII format. The files contained bathymetric depth measurements. Some sections of the data were received in NAD27 Hawaii State Plane (various zones), other sections were received in NAD27 UTM Zones 4 and 5. The data were vertically referenced to MLLW (feet or meters). OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The topographic las files were converted from Projected coordinates (State Plane or UTM) to Geographic coordinates. 2. If the vertical units were feet they were converted to meters. 3. The data were converted from ASCII to LAS V1.2 4. All points were classified to Class 11 (Bathymetry).
Process Date/Time:	2012-01-01 00:00:00
Process Contact:	NOAA Office for Coastal Management (NOAA/OCM)
Email Address:	coastal.info@noaa.gov
Phone (Voice):	(843) 740-1202

Catalog Details

Catalog Item ID:	49740
GUID:	gov.noaa.nmfs.inport:49740
Metadata Record Created By:	Anne Ball
Metadata Record Created:	2017-11-15 15:21+0000
Metadata Record Last Modified By:	SysAdmin InPortAdmin
Metadata Record Last Modified:	2023-10-17 16:12+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

Item Identification