Vectorized Shoreline of Tutuila, Ofu, Olosega, Rose, Swains, and Ta'u American Samoa, Derived from IKONOS Imagery, 2001
Data Set (DS) | National Centers for Coastal Ocean Science (NCCOS)GUID: gov.noaa.nmfs.inport:39249 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
National Centers for Coastal Ocean Science, 2024: 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.
Full Citation Examples
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.
Distribution Information
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Shapefile
Downloadable Data
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Shapefile
Downloadable Data
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Shapefile
Downloadable Data
-
Shapefile
Downloadable Data
none
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.
Controlled Theme Keywords
environment, oceans
Child Items
| Type | Title |
|---|---|
| Entity | tutu_final_nad83harn |
Contact Information
Point of Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Metadata Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Extents
-171.091291° W,
-168.143282° E,
-11.034746° N,
-14.56612° S
2001-01-01 - 2001-12-02
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 |
|---|---|
| ISO 19115 Topic Category |
environment
|
| ISO 19115 Topic Category |
oceans
|
| UNCONTROLLED | |
| 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
| Date Effective From: | 2002-08-07 |
|---|---|
| Date Effective To: | |
| Contact (Position): | NCCOS Scientific Data Coordinator |
| Email Address: | NCCOS.data@noaa.gov |
Distributor
| Date Effective From: | 2002-08-07 |
|---|---|
| Date Effective To: | |
| Contact (Position): | NCCOS Scientific Data Coordinator |
| Email Address: | NCCOS.data@noaa.gov |
Metadata Contact
| Date Effective From: | 2002-08-07 |
|---|---|
| Date Effective To: | |
| Contact (Position): | NCCOS Scientific Data Coordinator |
| Email Address: | NCCOS.data@noaa.gov |
Point of Contact
| Date Effective From: | 2002-08-07 |
|---|---|
| Date Effective To: | |
| Contact (Position): | NCCOS Scientific Data Coordinator |
| Email Address: | NCCOS.data@noaa.gov |
Principal Investigator
| 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
| W° Bound: | -171.091291 | |
|---|---|---|
| E° Bound: | -168.143282 | |
| N° Bound: | -11.034746 | |
| S° Bound: | -14.56612 |
Extent Group 1 / Time Frame 1
| Time Frame Type: | Range |
|---|---|
| Start: | 2001-01-01 |
| End: | 2001-12-02 |
Spatial Information
Spatial Representation
Representations Used
| Vector: | Yes |
|---|
Vector Representation 1
| 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
| Download URL: | http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/manua_shoreline.zip |
|---|---|
| Distributor: | |
| Description: |
Downloadable Data |
| File Type (Deprecated): | ESRI shapefile |
| Distribution Format: | Shapefile |
Distribution 2
| Download URL: | http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/rose_shoreline.zip |
|---|---|
| Distributor: | |
| Description: |
Downloadable Data |
| File Type (Deprecated): | ESRI shapefile |
| Distribution Format: | Shapefile |
Distribution 3
| Download URL: | http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/swains_shoreline.zip |
|---|---|
| Distributor: | |
| Description: |
Downloadable Data |
| File Type (Deprecated): | ESRI shapefile |
| Distribution Format: | Shapefile |
Distribution 4
| Download URL: | http://coastalscience.noaa.gov/datasets/ccma/biogeo/us_pac_terr/shorelines/tutuila_shoreline.zip |
|---|---|
| Distributor: | |
| Description: |
Downloadable Data |
| File Type (Deprecated): | ESRI shapefile |
| Distribution Format: | Shapefile |
URLs
URL 1
| URL: | http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/data/shorelines.aspx |
|---|---|
| URL Type: |
Online Resource
|
URL 2
| URL: | http://ccma.nos.noaa.gov/ecosystems/coralreef/us_pac_terr/ |
|---|---|
| URL Type: |
Online Resource
|
Activity Log
Activity Log 1
| Activity Date/Time: | 2014-07-09 |
|---|---|
| Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
| 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
| Activity Date/Time: | 2017-09-13 |
|---|---|
| Description: |
Partial upload of Spatial Info section only. |
Activity Log 4
| Activity Date/Time: | 2017-11-01 |
|---|---|
| Description: |
Replaced entire Lineage section to populate new Source Contribution field. |
Activity Log 5
| 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
| 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)
| 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
| 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
| 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
|
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: | 2023-10-17 16:12+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 |