Accession Number:

ADA043788

Title:

Preliminary Eastern Indian Ocean Geoid from GEOS-3 Data,

Descriptive Note:

Corporate Author:

NAVAL SURFACE WEAPONS CENTER DAHLGREN LAB VA

Personal Author(s):

• Smith,Samuel L. , III
• Chappell,Alan C.

Report Date:

1977-06-01

Pagination or Media Count:

28.0

Abstract:

Ninety-four passes of GEOS-3 short pulse radar altimetry data taken in July-August 1975 over the eastern Indian Ocean by the DoD telemetry station at Perth, Australia have been analyzed to arrive at a preliminary ocean geoid. The self consistency of the data at track intersections has a mean geoid height difference of 75 cm with a standard deviation of 2.3 meters with normal processing. Application of bias removal techniques reduced the mean geoid height difference to 9 cm and improves the self consistency of the results to a standard deviation of less than 1 m. A comparison of the GEOS-3 Geoid is made with the NASA Marsh and Chang 1976 Geoid. The GEOS-3 Geoid correlates well with the larger features of the local bottom topography. Author

Descriptors:

• *GEODETIC SATELLITES
• *INDIAN OCEAN
• *GEOIDS
• OCEANOGRAPHIC DATA
• RADIO ALTIMETERS
• BIAS
• OCEAN BOTTOM TOPOGRAPHY
• STANDARD DEVIATION

Subject Categories:

• Physical and Dynamic Oceanography
• Geodesy
• Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE