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Short Citation:
National Centers for Coastal Ocean Science, 2022: Vectorized Shoreline of Tutuila, Ofu, Olosega, Rose, Swains, and Ta'u American Samoa, Derived from IKONOS Imagery, 2001, https://www.fisheries.noaa.gov/inport/item/39249.

Item Identification

Title: Vectorized Shoreline of Tutuila, Ofu, Olosega, Rose, Swains, and Ta'u American Samoa, Derived from IKONOS Imagery, 2001
Short Name: as_shoreline_revised
Status: Completed
Publication Date: 2002-08-07
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 multi-spectral data were purchased for each study area. A digital vector shoreline was manually digitized from the one-meter panchromatic imagery to provide accurate, up-to-date shoreline data.

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 coastal resource management programs of the Territories of American Samoa and Guam, the Commonwealth of the Northern Mariana 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:

588

Other Citation Details:

The vectorized shoreline data was derived from the one-meter panchromatic IKONOS imagery. Those areas of the coastline that were obscured by cloud cover were derived from United States Geological Survey (USGS) Digital Raster Graphics (DRGs)

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 Ofu
None Olosega
None Rose
None Swains
None Ta'u
None Territory of American Samoa
None Tutuila
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: 462392
Date Effective From: 2002-08-07
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 462394
Date Effective From: 2002-08-07
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 462395
Date Effective From: 2002-08-07
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 462393
Date Effective From: 2002-08-07
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 462396
Date Effective From: 2002-08-07
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: 462399
W° Bound: -171.091291
E° Bound: -168.143282
N° Bound: -11.034746
S° Bound: -14.56612

Extent Group 1 / Time Frame 1

CC ID: 462398
Time Frame Type: Range
Start: 2001-01-01
End: 2001-12-02

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Vector Representation 1

CC ID: 584170
Curve Object Present?: Yes
Curve Object Count: 219

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: 462401
Download URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/manua_shoreline.zip
Distributor:
Description:

Downloadable Data

File Type: ESRI shapefile

Distribution 2

CC ID: 462402
Download URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/rose_shoreline.zip
Distributor:
Description:

Downloadable Data

File Type: ESRI shapefile

Distribution 3

CC ID: 462403
Download URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/swains_shoreline.zip
Distributor:
Description:

Downloadable Data

File Type: ESRI shapefile

Distribution 4

CC ID: 462400
Download URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/tutuila_shoreline.zip
Distributor:
Description:

Downloadable Data

File Type: ESRI shapefile

URLs

URL 1

CC ID: 462389
URL: http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/data/shorelines.aspx
URL Type:
Online Resource

URL 2

CC ID: 462390
URL: http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 462428
Activity Date/Time: 2014-07-09
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 462427
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: 584168
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 600880
Activity Date/Time: 2017-11-01
Description:

Replaced entire Lineage section to populate new Source Contribution field.

Activity Log 5

CC ID: 716618
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Technical Environment

Description:

Microsoft Windows NT Version 4.0 (Build 1381) Service Pack 6; 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 2001. 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, 60 ground control points were used to determine the circular error (CE) at a 90% confidence level. For Pacific Islands, Tutuila, American Samoa, IKONOS data, 2001 the circular error is 2.7 meters for the Panchromatic data set.

Completeness Report:

This shoreline dataset of Tutuila is dependent on the shoreline as delineated on 2001 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 current aerial photography 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

IKONOS Panchromatic Satellite Imagery

CC ID: 600881
Contact Name: Space Imaging Incorporated
Publish Date: 2001-12-02
Extent Type: Range
Extent Start Date/Time: 2001-01-01
Extent End Date/Time: 2001-12-02
Scale Denominator: 3780
Citation URL: http://www.spaceimaging.com
Source Contribution:

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

Manua Islands Digital Raster Graphic (DRG)

CC ID: 600882
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 that coast that were obscured by cloud cover in the satellite imagery. | Source Geospatial Form: map | Type of Source Media: CD-ROM

Process Steps

Process Step 1

CC ID: 600883
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 were digitized from USGS Digital Raster Graphics (DRGs). The USGS DRG for Manua had to be 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 20020715 - 20020802.

Process Date/Time: 2002-08-02 00:00:00

Process Step 2

CC ID: 600884
Description:

The completed shoreline dataset was sent to the on-island technical assistant in American Samoa for review and adjustment. Using the same IKONOS imagery and DRG datasets, as well as GPS data and personal knowledge of the subject area, the technical assistant was able to make adjustments to the shoreline. These adjustments were needed in areas where the land-water interface was unable to be determined clearly due to cloud cover or shadow. Process Date Range is 20020809 - 20020827.

Process Date/Time: 2002-08-27 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity tutu_final_nad83harn

Catalog Details

Catalog Item ID: 39249
GUID: gov.noaa.nmfs.inport:39249
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