Abstract
Upward and downward continuation of gravity anomalies are usually based on the Poisson integral and its iteration. By using the method of domain decomposition, a local function can be used for upward and downward continuation of gravity data. This approach decomposes the total area into small domains, and uses local functions to model the disturbing potential within each of these domains. One appropriate set of local functions, used in this paper, is the 3-D Fourier series. The results of the domain decomposition approach are compared to the Poisson integral for upward continuation in a flat area (to avoid large topographic effect) and downward continuation in a rough area in the Rocky Mountains. The data consist of ′×′ grid of NGS’ surface gravity over the conterminous US (CONUS). In addition, INTERMAP’s airborne gravity tracks in the Baltimore area are used to validate the upward continuation results of the two methods. The advantages and disadvantages of the local functions versus the Poisson integral approach are discussed
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.