2007 Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Topobathy Lidar: Guam

Metadata also available as [Questions & Answers] - [Parseable text] - [XML]

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX)
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
Publication_Date: 20071211
Title:
2007 Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Topobathy Lidar: Guam
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)
Online_Linkage: <http://csc.noaa.gov/htdata/lidar1_z/geoid12a/data/551/>
Online_Linkage: <http://www.csc.noaa.gov/lidar>
Online_Linkage: <http://www.csc.noaa.gov>
Description:
Abstract:
These data were collected for the Government of Guam Department of Public Works and the Government of Guam Office of Homeland Security from February 18 through May 20, 2007. The data contained in these files contain topographic data collected by the CHARTS system. The data points representing bare earth have been classified as such using TerraScan. The topographic lidar was collected across the island of Guam to produce 2 foot contours and bathymetric lidar was collected to fill the areas where no data were obtained during previous survey efforts. The bathymetric lidar data were collected from the land/water interface seaward to a depth of 40 meters or laser extinction, whichever came first. This is a classified data set. Classification values are: Class 1: Unclassified Class 2: Ground Class 11: Water The data contain both first and last return lidar data. The topographic lidar data are vertically referenced to Mean Sea Level (MSL) and the bathymetric lidar data are referenced to Mean Lower Low Water (MLLW).
Purpose:
The purpose of this survey was to collect topographic lidar across the island of Guam to produce 2-foot contours and to collect bathymetric lidar data to fill the areas where no data were obtained during previous survey efforts. The bathymetric lidar data were to be collected from the land water interface seaward to a depth of 40 meters or laser extinction, whichever comes first.
Supplemental_Information:
A footprint of this data set may be viewed in Google Earth at: <ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/gu/2007_JALBTCX_Topobathy_Guam_Lidar.kmz>
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070218
Ending_Date: 20070520
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As Needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 144.616616
East_Bounding_Coordinate: 144.962572
North_Bounding_Coordinate: 13.654497
South_Bounding_Coordinate: 13.654497
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: 006
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry/Topography
Theme_Keyword: Lidar
Theme_Keyword: Elevation
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > LiDAR
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword: EARTH SCIENCE > Land Surface > Topography> Terrain Elevation
Theme_Keyword:
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States Territory
Place_Keyword: Guam
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: February 2007
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.
Data_Set_Credit:
Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) would be appreciated in any publications or derived products.

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: These data are not attributed.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: N/A
Attribute_Accuracy_Explanation: These data are not attributed.
Logical_Consistency_Report:
The data provided in this file were tested against ground truth data. At these locations the lidar data matched within 0.20 meters, and different flight line data agreed within 0.20 meters.
Completeness_Report:
These data covered the required survey area with minimal gaps in data coverage except near tops of mountains. These gaps are caused when the ground elevation rises so high that the lidar swath (based on maximum scan angles and altitude) from adjacent flight lines no longer overlap. The data postings are very consistent with postings nominally at 1.3 m density.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.75 m.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 0.75
Horizontal_Positional_Accuracy_Explanation: 1 Sigma
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.20 m.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 0.20
Vertical_Positional_Accuracy_Explanation: 1 Sigma
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: JALBTCX (comp.)
Publication_Date: Unpublished material
Publication_Time: Unknown
Title: 2007 HI Guam CHARTS Survey
Edition: 1
Geospatial_Data_Presentation_Form: globe
Other_Citation_Details: These data were collected by JALBTCX as project number 07006.
Type_of_Source_Media: hard drive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070218
Ending_Date: 20070520
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Not provided
Source_Contribution: Not provided
Process_Step:
Process_Description:
These data were collected using the CHARTS system. It is owned by the Naval Oceanographic Office and Operated through contract. The system collects topographic lidar data at 20 kHz and hydrographic data at 3 kHz. The system also collects RGB imagery at 1Hz. 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 equipment. Raw data are collected and transferred to the office for downloading and processing in SHOALS GCS software. GPS data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. These data are edited using Fledermaus software where anomalous data are removed from the dataset. The edited data are written to the national grid system 1 km tiles using chartsLAS, a program written by NAVO. This program reads data from the original binary format files and produces separate ASCII files for first and last return data. Using a model calculated by NAVO, data were converted from ellipsoid to Mean Sea Level heights using the program datum_shift, written by NAVO. The LAS files output from chartsLAS were read into TerraScan and filters were applied to classify ground points. Points designated as ground are assigned a classification value "2" and all other points are assigned the classification value "1" which represents an unclassified state.
Process_Date: 20071114
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: JALBTCX
Contact_Position: Data Production Manager
Contact_Address:
Address_Type: mailing and physical
Address: 7225 Stennis Airport Road, STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: USA
Contact_Voice_Telephone: 228-252-1111
Contact_Voice_Telephone: 228-252-1121
Contact_Facsimile_Telephone: 228-252-1133
Contact_Electronic_Mail_Address: shoals-info@sam.usace.army.mil
Hours_of_Service: 8 am to 5 pm Monday through Friday
Process_Step:
Process_Description:
The NOAA Coastal Services Center (CSC) received files in LAS format. The files contained LiDAR intensity and elevation measurements. CSC performed the following processing on the data to make it available within Digital Coast: 1. The data were converted from UTM coordinates to geographic coordinates. 2. The bathymetric lidar classifications were set to class 11. 3. The LAS georeference header files were set to reflect the tidal vertical datums. 4. The LAS header fields were sorted by latitude and updated.
Process_Date: 201011
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Position: Clearinghouse Manager
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405
Country: US
Contact_Voice_Telephone: 843-740-1210
Contact_Electronic_Mail_Address: clearinghouse@noaa.gov

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0000001
Longitude_Resolution: 0.0000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: Mean Sea Level
Altitude_Resolution: 0.001
Altitude_Distance_Units: Meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Depth_System_Definition:
Depth_Datum_Name: MLLW
Depth_Resolution: 0.001
Depth_Distance_Units: Meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Position: Clearinghouse Manager
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1210
Contact_Electronic_Mail_Address: clearinghouse@noaa.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Any conclusions drawn from the analysis of this information are not the responsibility of JALBTCX, the Coastal Services Center, or its partners.
Custom_Order_Process:
This data can be obtained on-line at the following URL: <http://www.csc.noaa.gov/lidar>

Metadata_Reference_Information:
Metadata_Date: 20130617
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Position: Clearinghouse Manager
Contact_Address:
Address_Type: mailing and physical
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1210
Contact_Electronic_Mail_Address: clearinghouse@noaa.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Online_Linkage:
<http://www.ncddc.noaa.gov/metadataresource/metadata-references/files/ncddcmdprofile_v2.pdf>


CoRIS:
CoRIS_Metadata_Link:
<http://www.coris.noaa.gov/metadata/records/html/usace2007_guam_metadata.html>
CoRIS_Tracking_ID: 6704

Generated by mp version 2.9.13 on Sun Apr 20 10:41:02 2014