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Short Citation:
National Centers for Coastal Ocean Science, 2022: Vectorized Shoreline of Guam, Derived from IKONOS Satellite Imagery, 2000 through 2003, https://www.fisheries.noaa.gov/inport/item/39322.

Item Identification

Title: Vectorized Shoreline of Guam, Derived from IKONOS Satellite Imagery, 2000 through 2003
Short Name: guam_shoreline_revised
Status: Completed
Publication Date: 2003-10
Abstract:

IKONOS imagery was purchased to support the Pacific Islands Geographic Information System (GIS) project and the National Ocean Service's (NOS) coral mapping activities. One-meter panchromatic and four-meter multispectral data were purchased for the Territory of Guam. A digital vector shoreline was manually digitized from the one-meter panchromatic imagery to provide accurate, up-to-date shoreline data for the region.

Purpose:

The Pacific Islands Geographic Information System (GIS) project is a multiyear initiative designed to increase the use of GIS and related spatial technology in the coast resource management programs of the Territories of American Samoa and Guam, the Commonwealth of the Northern Marian Islands (CNMI), and the State of Hawaii. The project will focus on personnel, training, equipment, software, data, and applications. Where appropriate, other related activities in the region will be incorporated into the effort.

Notes:

593

Other Citation Details:

The vectorized shoreline data was derived from one-meter panchromatic IKONOS satellite imagery.

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category environment
ISO 19115 Topic Category oceans
None IKONOS
None IKONOS multispectral imagery
None IKONOS panchromatic imagery
None land/water interface
None oceans
None Pacific Islands GIS
None Shoreline
None Shoreline data
None Shoreline vectorization
None vectorization

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Coastal Zone
None Oceania
None Territory of Guam
None United States

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: vector digital data
Distribution Liability:

Users must assume responsibility to determine the appropriate use for these data.

Support Roles

Data Steward

CC ID: 465792
Date Effective From: 2003-10
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 465794
Date Effective From: 2003-10
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 465795
Date Effective From: 2003-10
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 465793
Date Effective From: 2003-10
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 465796
Date Effective From: 2003-10
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: 465799
W° Bound: 144.616021
E° Bound: 144.959948
N° Bound: 13.655213
S° Bound: 13.233837

Extent Group 1 / Time Frame 1

CC ID: 465798
Time Frame Type: Range
Start: 2000-10-17
End: 2003-10-13

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Vector Representation 1

CC ID: 584391
Curve Object Present?: Yes
Curve Object Count: 212

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, NOAA cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Distribution Information

Distribution 1

CC ID: 465800
Download URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/guam_shoreline.zip
Distributor:
Description:

Downloadable Data

File Type: ESRI Shapefile

URLs

URL 2

CC ID: 465789
URL: http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/data/shorelines.aspx
URL Type:
Online Resource

URL 3

CC ID: 465790
URL: http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 465819
Activity Date/Time: 2013-07-17
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 465818
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: 584389
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 601011
Activity Date/Time: 2017-11-01
Description:

Replaced entire Lineage section to populate new Source Contribution field.

Activity Log 5

CC ID: 716638
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Technical Environment

Description:

Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.2.0.700

Data Quality

Horizontal Positional Accuracy:

The data were created by delineating the shoreline off of IKONOS panchromatic digital satellite imagery collected in 2000 - 2003. The horizontal resolution of the digital imagery is 1 meter. The original scale of the imagery was 1:3780. During orthorectification of the IKONOS imagery, 73 ground control points were used to determine the circular error (CE) at a 90% confidence level. For Pacific Islands, Guam, IKONOS data, 2002 the circular error is 8.5 meters for the panchromatic data set.

Completeness Report:

This shoreline dataset of Guam is dependent on the shoreline as delineated on 2001 through 2003 IKONOS digital satellite imagery from Space Imaging, LLC. The position of the shoreline might change as the natural land changes or better maps and more recent imagery become available.

Conceptual Consistency:

These data are believed to be logically consistent, though no tests were performed. All arcs were snapped by the nodes to create consistently tied strings without node dangles. Line geometry is topologically clean.

Lineage

Sources

Digital Ortho Quads for Agana, Agat, and Apra

CC ID: 601014
Contact Name: United States Geological Survey (USGS)
Publish Date: 1997-01-01
Extent Type: Discrete
Extent Start Date/Time: 1997
Scale Denominator: 2835
Source Contribution:

Used to identify and digitize the shoreline (land/water interface) for locations where the coast was obscured by cloud cover in the satellite imagery | Type of Source Media: CD-ROM

Guam Digital Raster Graphic (DRG)

CC ID: 601013
Contact Name: United States Geological Survey
Publish Date: 1998-02-26
Extent Type: Discrete
Extent Start Date/Time: 1998-02-26
Scale Denominator: 24000
Citation URL: http://mapping.usgs.gov
Source Contribution:

Used to identify and digitize the shoreline (land/water interface) for areas of the coast that were obscured by cloud cover in the satellite imagery | Source Geospatial Form: map | Type of Source Media: CD-ROM

IKONOS Panchromatic Satellite Imagery

CC ID: 601012
Contact Name: Space Imaging Incorporated
Publish Date: 2003-01-16
Extent Type: Range
Extent Start Date/Time: 2000-10-17
Extent End Date/Time: 2003-01-16
Scale Denominator: 3780
Citation URL: http://www.spaceimaging.com
Source Contribution:

Used to identify and digitize the shoreline (land/water interface) for Guam | Source Geospatial Form: remote-sensing image | Type of Source Media: CD-ROM

Process Steps

Process Step 1

CC ID: 601015
Description:

During the vectorization process, the satellite imagery was displayed on a computer screen using ESRI's ArcGIS 8.2 software. In order to obtain the highest degree of accuracy from the imagery, the one-meter panchromatic imagery was used as a base layer for digitizing. In an effort to better visualize the land-water interface, the one-meter imagery was overlaid on top of the four-meter multispectral imagery using a 35 % transparency value. The near-infrared band (Band 4) was used in the display of the multispectral imagery. The resultant base layer contained the one-meter resolution of the panchromatic imagery and the colorization of the four-meter imagery. The display was zoomed to the image resolution of the panchromatic imagery and the shoreline was manually digitized. All lines are coded with length, ID, origin, and source. Note - Areas of the shoreline that were obscured by cloud cover in the satellite imagery were digitized from USGS Digital Raster Graphics (DRGs). The USGS DRGs for Guam were adjusted in the x and y directions using ERDAS Imagine 8.5 to match the IKONOS imagery. Cloud Cover for imagery was less than 10 percent. Process Date Range is 20020905 - 20030923

Process Date/Time: 2003-09-23 00:00:00

Process Step 2

CC ID: 601016
Description:

Further modification of the Guam shoreline was conducted by staff within the Guam Coastal Zone Management Program and modified by staff of the NOS Biogeography Branch. ArcView 3.2 was used to adjust shapefile vector vertices. Most alterations were done by combining the visual information available within the one-meter panchromatic imagery of Guam together with local knowledge of the coastline, and some Digital Ortho Quad (USGS DOQ) data.

Process Date/Time: 2003-10-13 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity guamshrln

Catalog Details

Catalog Item ID: 39322
GUID: gov.noaa.nmfs.inport:39322
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