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Transcontinental Tidal Gravity Profile across the United States
Science (New York, N.Y.)
|May 22, 1970
Summary
This study analyzed tidal gravity data across the US, revealing ocean tides significantly influence Earth tides. Accounting for this ocean tide effect harmonizes data across the transcontinental network.
Area of Science:
- Geophysics
- Earth Sciences
- Tidal Studies
Background:
- The indirect influence of ocean tides on the solid-earth tide is a long-standing problem in geophysics.
- Understanding this interaction is crucial for accurate Earth tide modeling.
Purpose of the Study:
- To analyze transcontinental tidal gravity data to understand the influence of ocean tides on solid-earth tides.
- To investigate the relationship between tidal gravity parameters and regional geology.
Main Methods:
- Analysis of data from a transcontinental tidal gravity profile across the United States.
- Focus on principal tidal constituents M(2) and O(1).
- Comparison of observed gravimetric factor and phase with ocean tidal characteristics.
Main Results:
- Observed gravimetric factor and phase values depend on Atlantic and Pacific ocean tidal characteristics.
- No correlation found between tidal gravity parameters and regional geology.
- Incorporating ocean tide influence allows consistent data within Earth tidal theory.
Conclusions:
- Ocean tides significantly impact solid-earth tide measurements.
- A consistent Earth tidal model can be achieved by accounting for ocean tidal effects.
- Geological factors do not appear to influence tidal gravity parameters in this study.
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