Accession Number:

AD0754009

Title:

Water Quality Determinations in the Virgin Islands from ERTS-A Data.

Descriptive Note:

Research rept.,

Corporate Author:

GRUMMAN AEROSPACE CORP BETHPAGE N Y RESEARCH DEPT

Personal Author(s):

• Egan,W.

Report Date:

1972-12-01

Pagination or Media Count:

27.0

Abstract:

The harbor at Charlotte Amalie on St Thomas, Virgin Islands, has a concentration of many factors affecting water quality Untreated sewage effluent Sediment from navigation and dredging operations Runoff from a garbage dump, and Hot effluent from a desalinationpower plant. Imagery from ERTS-A in association with aircraft imagery and ground truthing permits the characterization of water quality in terms of absolute color values. This necessitates the establishment of photometric standards resolvable by the ERTS-A sensors in order that atmospheric effects, which generally vary on sequential overpasses, may be determined and subtracted. The overall program for doing this is described together with typical numerical results. Author

Descriptors:

• (*SCIENTIFIC SATELLITES
• WATER POLLUTION)
• (*VIRGIN ISLANDS
• *WATER POLLUTION)
• CALIBRATION
• COLOR PHOTOGRAPHY
• SPACEBORNE
• SEWAGE
• REFLECTION
• HARBORS
• LIGHT TRANSMISSION

Subject Categories:

• Hydrology, Limnology and Potamology
• Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE