Guam Shoreline Vector Data Derived from IKONOS Satellite Imagery, 2000-2003

2000 through 2003 IKONOS satellite imagery was purchased to support coral mapping and GIS projects for the Pacific Islands. A digital vector shoreline for the Territory of Guam was manually digitized from the one-meter panchromatic imagery. The dataset was produced by NOAA_NCEI and last updated in October 2003.

Use Cases

• Coastal change detection and monitoring based on the manually digitized, high-resolution shoreline.
• GIS base layer creation for regional planning based on the up-to-date vector shoreline data.
• Coral reef habitat mapping and analysis based on the imagery supporting National Ocean Service activities.
• Satellite imagery validation and accuracy assessment based on the derived vector data.

Strengths

• Derived from one-meter resolution panchromatic IKONOS imagery, suggesting high spatial detail.
• Shoreline was manually digitized, which likely improves accuracy over automated methods.
• Provides up-to-date data for the region as of the early 2000s.

Limitations

• Last updated 2003-10-13 00:00:00; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect temporal bias inherent to the 2000-2003 collection period.

Provenance

Source

NOAA_NCEI

Collection Method

Manually digitized from purchased one-meter panchromatic IKONOS satellite imagery.

Time Range

2000 through 2003

Freshness

Last updated 2003-10-13 00:00:00

Geography

Territory of Guam