Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), NOAA Coastal Services Center (CSC)
200310
Vectorized Shoreline of Guam, Derived from IKONOS Satellite Imagery, 2000 through 2003
first
vector digital data
Charleston, SC
NOAA's Ocean Service, Coastal Services Center (CSC)
The vectorized shoreline data was derived from one-meter panchromatic IKONOS satellite imagery.
http://products.coastalscience.noaa.gov/collections/benthic/e99us_pac/default.aspx
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.
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.
20001017
20031013
ground condition
As needed
144.616021
144.959948
13.655213
13.233837
NCEI Geoportal FilterCoRIS_MetadataCRCP ProjectMapping the shallow-water coral reef ecosystems of American Samoa, Guam, and the Northern Marianas1209
None
Shoreline
Shoreline data
land/water interface
vectorization
Shoreline vectorization
IKONOS
IKONOS panchromatic imagery
IKONOS multispectral imagery
Pacific Islands GIS
CoRIS Discovery Thesaurus
Geographic Information > Shorelines
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Coastal Processes > Shorelines
ISO 19115 Topic Category
elevation
006
None
United States
Territory of Guam
Coastal Zone
Oceania
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)
COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)
CoRIS Region
Guam
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.
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
Biogeography Team Leader, Mapping Manager
mailing and physical address
1305 East West Highway
Silver Spring
MD
20910
301-713-3028
301-713-4388
tim.battista@noaa.gov
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.2.0.700
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.
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.
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.
Space Imaging Incorporated
20001017
IKONOS Panchromatic Satellite Imagery
remote-sensing image
Thornton, CO
Space Imaging
3780
CD-ROM
20001017
20030116
ground condition
IKONOS
Used to identify and digitize the shoreline (land/water interface) for Guam
United States Geological Survey
19980226
Guam Digital Raster Graphic (DRG)
map
Reston, VA
USGS
24000
CD-ROM
19980226
publication date
USGS DRGs
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
United States Geological Survey (USGS)
1997
Digital Ortho Quads for Agana, Agat, and Apra
Reston, VA
United States Geological Survey
USGS Digital Ortho Quads were supplied by the National Park Service.
2835
CD-ROM
1997
ground condition
Digital Ortho Quads
Used to identify and digitize the shoreline (land/water interface) for locations where the coast was obscured by cloud cover in the satellite imagery
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.
IKONOS imagery used were collected 20001017, 20001130, 20010511, 20010511, 20010514, 20021111, 20021114, 20030105, 20030116.
This step began 20020905 and ended 20030923.
20030923
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), NOAA Coastal Services Center (CSC)
Pacific Islands GIS Specialist
mailing and physical address
2234 South Hobson Avenue
Charleston
South Carolina
29405
843-740-1200
843-740-1224
csc@csc.noaa.gov
Monday through Friday, 0800 to 1700, EST
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 Program. 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.
20031013
Guam Coastal Management Program
James Byrne
mailing address
P.O Box 2950
Hagatna
Guam
96932
USA
671-472-4201
671-477-1812
jbyrne@mail.gov.gu
10
Vector
String
212
Universal Transverse Mercator
55
0.999600
147.000000
0.000000
500000.000000
0.000000
Coordinate Pair
0.000128
0.000128
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
guamshrln
Polyline shapefile
NOAA Coastal Service Center
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Id
Feature identification number
NOAA Coastal Services Center
Software generated
Length
Length of shoreline polyline segments
NOAA Coastal Services Center
Software generated
Origin
Origin of shoreline data
NOAA Coastal Services Center
1
NOAA Coastal Services Center
NOAA Coastal Services Center
2
Guam Coastal Zone Management Program
NOAA Coastal Services Center
Source
Source of shoreline data
NOAA Coastal Services Center
1
One-meter panchromatic IKONOS digital satellite imagery
NOAA Coastal Services Center
2
USGS Digital Raster Graphics (DRG)
NOAA Coastal Services Center
3
USGS Digital Ortho Quad Photos
NOAA Coastal Services Center
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
Biogeography Team Leader, Mapping Manager
mailing and physical address
1305 East West Highway
Silver Spring
MD
20910
301-713-3028
301-713-4388
tim.battista@noaa.gov
Downloadable Data
Users must assume responsibility to determine the appropriate use for these data.
Disclaimer- While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
ESRI Shapefile
https://cdn.coastalscience.noaa.gov/datasets/e99/data/shorelines/guam_shoreline.zip
None
20200329
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), NOAA Coastal Services Center (CSC)
Pacific Islands GIS Specialist
mailing and physical address
2234 South Hobson Avenue
Charleston
South Carolina
29405
843-740-1200
843-740-1224
csc@csc.noaa.gov
Monday through Friday, 0800 to 1700, EST
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
Local Time
20051109074608
None
20001017
20031013
https://www.coris.noaa.gov/metadata/records/html/shoreline_guam_2003.html
668