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Short Citation:
National Centers for Coastal Ocean Science, 2022: NOAA Geotiff - 4 meter LiDAR bathymetry, U.S. Caribbean - Puerto Rico (southwest) - Projects OPR-I305-KRL-06, (2006), UTM 19N NAD83, https://www.fisheries.noaa.gov/inport/item/39253.

Item Identification

Title: NOAA Geotiff - 4 meter LiDAR bathymetry, U.S. Caribbean - Puerto Rico (southwest) - Projects OPR-I305-KRL-06, (2006), UTM 19N NAD83
Short Name: bathymetry_metadata
Status: Completed
Publication Date: 2007-11
Abstract:

This image represents a LiDAR (Light Detection and Ranging) bathymetric mosaic (mean 4 meter gridded) collected along the coastline of southwestern Puerto Rico. The Tenix LADS Corporation (TLI) acquired bathymetric LIDAR for NOAA from 4/07/2006 to 5/15/2006. Data was acquired with a LADS (Laser Airborne Depth Sounder) Mk II Airborne System from altitudes between 1,200 and 2,200ft at ground speeds between 140 and 175 knots. The 900 Hertz Nd: YAG (neodymium-doped yttrium aluminum garnet) laser (1064 nm) acquired 4x4 meter spot spacing and 200% seabed coverage. In total, 265 square nautical miles of LiDAR were collected between -50 m (topographic) and up to 70 m (depth), requiring a total of 102 flight hours (134 hours, including flight time to and from San Juan airport). Environmental factors such as wind strength and direction, cloud cover, and water clarity influenced the area of data acquisition on a daily basis. The data was processed using the LADS Mk II Ground System and data visualization, quality control and final products were created using CARIS HIPS and SIPS 6.1 and CARIS BASE Editor 2.1 The project was conducted to meet the IHO (International Hydrograph Organization)Order 1 accuracy standards, dependant on the project area and depth. All users should individually evaluate the suitability of this data according to their own needs and standards.

Purpose:

The purpose of this survey was to provide NOAA with modern, accurate hydrographic survey data with which to update the nautical charts of the assigned area.

Notes:

885

Supplemental Information:

During April/May 2006 under contract to the National Ocean Service, TLI collected airborne LiDAR bathymetry under Contract Number DG133C-03-CQ-0011, Task Order T0008 and Project Number OPR-I305-KRL-06. Information about Depth Resolution: See DAPR for project OPR-I305-KRL-06 for more details

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
CoRIS Discovery Thesaurus Geographic Information > Bathymetry
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat > Description
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
ISO 19115 Topic Category 006
ISO 19115 Topic Category 007
ISO 19115 Topic Category 008
ISO 19115 Topic Category 010
ISO 19115 Topic Category 014
ISO 19115 Topic Category elevation
ISO 19115 Topic Category environment
ISO 19115 Topic Category geoscientificInformation
ISO 19115 Topic Category imageryBaseMapsEarthCover
ISO 19115 Topic Category oceans
None Backscatter
None Bathymetry
None Benthic
None Biogeography
None Coral
None GIS
None Habitat
None Integrated Ocean and Coastal Mapping
None Intensity
None IOCM
None LADS Mk II
None LiDAR
None Light
None Mosaic
None NOAA
None OPR-I305-KRL-06
None Puerto Rico
None Raster
None Reef
None Reflectivity
None Seafloor
None U.S. Caribbean

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2006

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
Place_Keyword_Thesaurus: CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Puerto Rico > Mayaguez (18N067W0010)
Place_Keyword_Thesaurus: CoRIS Place Thesaurus OCEAN BASIN > Atlantic Ocean > Caribbean Sea /North Atlantic Ocean > Puerto Rico > Mayaguez (18N067W00010)
None Southwestern Puerto Rico

Physical Location

Organization: National Centers for Coastal Ocean Science
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: remote-sensing image
Distribution Liability:

These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.

Data Set Credit: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS)

Support Roles

Data Steward

CC ID: 462545
Date Effective From: 2007-11
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 462547
Date Effective From: 2007-11
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 462548
Date Effective From: 2007-11
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 462546
Date Effective From: 2007-11
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 462549
Date Effective From: 2007-11
Date Effective To:
Contact (Person): Battista, Tim
Email Address: tim.battista@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 462552
W° Bound: -67.439646
E° Bound: -66.938861
N° Bound: 18.19272
S° Bound: 17.857963

Extent Group 1 / Time Frame 1

CC ID: 462551
Time Frame Type: Range
Start: 2006-04-07
End: 2006-05-15

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Grid Representation 1

CC ID: 584180
Dimension Count: 3
Cell Geometry: Point
Transformation Parameters Available?: No

Axis Dimension 1

Dimension Type: Row
Size: 9135

Axis Dimension 2

Dimension Type: Column
Size: 13169

Axis Dimension 3

Dimension Type: Vertical
Size: 1

Access Information

Security Class: Unclassified
Data Access Constraints:

Please cite any use of this data.

Data Use Constraints:

These data depict the elevations at the time of the survey and are only accurate for that time. 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 being fully aware of its limitations.These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.

Distribution Information

Distribution 1

CC ID: 462553
Download URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/lidar_pr/Bathymetry.zip
Distributor:
Description:

Downloadable Data

File Type: TIFF
File Size: 500

URLs

URL 1

CC ID: 462542
URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/lidar_pr/Bathymetry.zip
URL Type:
Online Resource

URL 2

CC ID: 462543
URL: http://ccma.nos.noaa.gov/products/biogeography/lidar_pr/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 462597
Activity Date/Time: 2014-08-12
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 462596
Activity Date/Time: 2017-04-05
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: 584178
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 600888
Activity Date/Time: 2017-11-01
Description:

Replaced entire Lineage section to populate new Source Contribution field.

Activity Log 5

CC ID: 716620
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Technical Environment

Description:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350

Data Quality

Horizontal Positional Accuracy:

See Data Acquisition and Processing Report (DAPR) and Vertical and Horizontal Control Report for OPR-I305-KRL-06.

Vertical Positional Accuracy:

See Data Acquisition and Processing Report (DAPR) and Vertical and Horizontal Control Report for OPR-I305-KRL-06.

Completeness Report:

The survey area was sounded at 4x4m laser spot spacing with main lines of sounding spaced at 80m, which provided the required 200% coverage. It should be noted that at 4x4m laser spot spacing, there is a gap of 1 to 1.5m between the illuminated areas of adjacent soundings at the sea surface. There is a possibility that small objects in shallow water along the coastline may fall between consecutive 4x4m soundings and not be detected. There are also some gaps in the data due to turbidity and very shallow water, as well as an intermittent laser problem on the last survey sortie. This has resulted in some along track and cross track anomalies and at the time this satisfied the requirement of the survey.

Conceptual Consistency:

While the project was conducted to meet IHO Order 1 accuracy standards, dependant on project area and depth, all users should independently analyze the dataset according to their own needs and standards to determine data usability.

Lineage

Sources

OPR-I305-KRL-06 LiDAR Data

CC ID: 600889
Contact Name: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS)
Extent Type: Range
Extent Start Date/Time: 2006-04-07
Extent End Date/Time: 2006-05-15
Source Contribution:

Original full resolution dataset. | Source Geospatial Form: vector digital data | Type of Source Media: external hard drive

Process Steps

Process Step 1

CC ID: 600890
Description:

Data Acquisition: For this project (OPR-I305-KRL-06), the Chief of Party was TLIs Darren Stephenson and Hydrographer was TLIs Mark Sinclair. Data was collected between 4/7/2006 and 5/15/2006 using the LADS Mk II Airborne System. The LADS Mk II Airborne System (AS) consists of a Dash 8-200 series aircraft, which has a transit speed of 250 knots at altitudes of up to 25,000ft and an endurance of up to eight hours. Survey operations are conducted from heights between 1,200 and 2,200ft at ground speeds between 140 and 175 knots. The aircraft was fitted with an Nd: YAG laser, which operates at 900 Hertz from a stabilized platform to provide a number of different spot spacings. The survey area was sounded at 4x4m laser spot spacing with main lines of sounding spaced at 80m, which provided the required 200% coverage. Green laser pulses are scanned beneath the aircraft in a rectilinear pattern. The pulses are reflected from the land, sea surface, within the water column and from the seabed. The height of the aircraft is determined by the infrared laser return, which is supplemented by the inertial height from the Attitude and Heading Reference System and GPS height. Real-time positioning is obtained by an Ashtech GG24 GPS receiver combined with Wide Area DGPS (Differential Global Positioning System) provided by the Fugro Omnistar to provide a differentially corrected position. Ashtech Z12 GPS receivers are also provided as part of the Airborne System and Ground Systems to log KGPS (Kinetic Global Positioning System) data on the aircraft and at a locally established GPS (Global Positioning System) base station. For more details on the airborne system, refer to the DAPR (Data Acquisition and Processing Report).

Process Date/Time: 2006-01-01 00:00:00
Source: OPR-I305-KRL-06 LiDAR Data

Process Step 2

CC ID: 600891
Description:

Data Processing: The data was processed using the LADS Mk II Ground System. It consists of a portable Compaq Alpha ES40 Series 3 processor server with 1 GB EEC RAM, 764 GB disk space, digital linear tape (DLT) drives and magazines, digital audio tape (DAT) drive, CD ROM drive and is networked to up to 12 Compaq 1.5 GHz PCs and a HP 800ps Design Jet Plotter, printers and QC workstations. The GS supports survey planning, data processing, quality control and data export. The GS component also includes a KGPS base station, which provides independent post-processed position and height data. A comprehensive description of the GS is provided in the Data Acquisition and Processing Report delivered for project number OPR-I305-KRL-06. Corrections to Soundings: The optics and electronics for laser transmission and reflected waveform collection for all soundings is done by equipment mounted on a stabilized platform within the aircraft. This platform is stabilized by an Attitude and Heading Reference System (AHRS) that minimizes the motion effect (roll and pitch) of the aircraft and all residuals from the local horizontal are logged by the Airborne System for correctional processing by the Ground System. Sounding depths and positions are determined in the Ground System from the raw waveform, aircraft height and platform attitude parameters as logged by the Airborne System. The Ground System automatically corrects soundings for aircraft height and heading, offsets between sensors, latency, mirror and platform angles, sea surface model errors, refraction of the laser beam at the sea surface, the effects of scattering of the beam in the water column and reduction for tide. Correct operation of the system is verified by static and dynamic position checks, benchmark lines and analysis of overlaps, redundancy from the 200% coverage of the seabed and crossline comparison results.

Process Date/Time: 2006-01-01 00:00:00

Process Step 3

CC ID: 600892
Description:

Quality Control and Product Creation: CARIS HIPS and SIPS 6.1, Terramodel, Generic Mapping Tool, Visualization Tool Kit and Olex were used for data visualization, quality control and final product creation. Validation proceeds through the following steps:1. Examining the Depth Profile for the correct processing of each expected Survey Run.2. Examining the Position Confidence (C3) profile to verify that adequate position accuracy is maintained during the Survey Run. Note: Other profiles of supporting data such as EHE, number of satellites, and latency may also be examined as run profiles.3. Examining the Coverage Confidence (C6) profile to verify that no coverage gaps exist in the Survey Run. Resolving anomalous soundings by examining data points in the Survey Run by checking: a. The Primary Depth Display b. The Waterfall Display c. The Waveform Display d. The Local Area Display. Editing operations include selection of the alternate depth, assignment of NBA or deletion of the sounding as appropriate. Based on assessments made in the above steps the operator segments the line classifying each segment as: a. Accepted b. Anomalous (data not to be used) or c. Rejected (for refly). All operator interactions during the validation phase are logged so that complete traceability is maintained. Data Visualization - All validated and checked data is exported from the GS in a defined ASCII format for spatial presentation and checking. The position, depth, run and other relevant information are extracted from the line-based data for use in the generation of Triangulated Irregular Networks (TINs) and gridded data sets. Both of these are used to produce contour plots, sun-illuminated color banded images and coverage check plots. Anomalies found in these plots are reported back to the checkers for remedial action in the GS. Data Gaps -The survey area was sounded at 4x4m laser spot spacing with main lines of sounding spaced at 80m, which provided the required 200% coverage. It should be noted that at 4x4m laser spot spacing, there is a gap of 1 to 1.5m between the illuminated areas of adjacent soundings at the sea surface. There is a possibility that small objects in shallow water along the coastline may fall between consecutive 4x4m soundings and not be detected. There are also some gaps in the data due to turbidity and very shallow water, as well as an intermittent laser problem on the last survey sortie. This has resulted in some along track and cross track anomalies and at the time this satisfied the requirement of the survey. Position Checks - Two independent positioning systems were used during the survey. Real-time positions were aided by WADGPS (Wide Area Differential Global Positioning System). A post-processed KGPS position was also determined relative to a local GPS base station that was established on the rooftop of the Courtyard Marriott Hotel in San Juan. The post-processed KGPS position solutions were applied to each sounding during post-processing and the height used in the datum filter. Horizontal Control - Data collection and processing were conducted on the Airborne and Ground Systems in World Geodetic System (WGS84) on Universal Transverse Mercator (Northern Hemisphere) projection UTM (N) in Zone 19, Central Meridian 69 W. All units are in meters. This data was post-processed and all soundings are relative to the North American Datum 1983 (NAD83). For more details, please see the Vertical and Horizontal Control Report. (continued...)

Process Date/Time: 2006-01-01 00:00:00

Process Step 4

CC ID: 600893
Description:

(continued from above) Water Clarity - The water clarity in the survey area was ideal for laser bathymetry as the water was very clear. Coverage was obtained for the majority of the survey area. The only area where coverage was not achieved was due to turbidity or very shallow water. Water depths to 50m were achieved at the extent of the predominant reef structure in SW Puerto Rico. The majority of the survey area is less than 20m deep. There are a number of areas throughout the survey area where no depths were achieved due to turbidity or very shallow water. The water clarity in some areas did vary on a daily basis, which required careful management. Additional survey lines were planned and flown to minimize the data gaps due to turbidity. (end continuation)

Process Date/Time: 2006-01-01 00:00:00

Process Step 5

CC ID: 600894
Description:

The final images were reprojected from Transverse Mercator to NAD 1983 UTM Zone 19N using ArcGIS. Holidays (i.e., missing data values) were filled using a nearest neighbor interpolation technique.

Process Date/Time: 2007-12-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity ObjectID

Catalog Details

Catalog Item ID: 39253
GUID: gov.noaa.nmfs.inport:39253
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 12:51+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2018-02-08
Owner Org: NCCOS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-02-08
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-02-08