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Title: Geophysical investigation of lithosphere structure beneath Sri Lanka using surface and internal load variations
Authors: Prasanna, HMI
Chen, W 
Gomez-Ortiz, D
Keywords: Crustal structure
Earth structure
Gravity anomalies
Gravity inversion
Moho discontinuity
Issue Date: 2014
Publisher: Birkhauser, co-published with Springer
Source: Pure and applied geophysics, 2014, v. 171, no. 8, p. 1951-1962 How to cite?
Journal: Pure and applied geophysics 
Abstract: This paper describes a method for interpreting the lateral changes in the geological structure of the lithosphere by iteratively calculating the spatial variation of a bottom-to-top loading ratio. We use Forsyth’s coherence method, based on multi-taper spectral analysis on overlapping window areas. We discuss the geological findings and their comparison with existing geological interpretations for the Sri Lankan region. The low thickness of the elastic plate in the Sri Lankan region suggests a high geothermal gradient. The lithospheric geological structure beneath the Sri Lankan region is consistent with the main crustal units of Sri Lanka, which belong to different ancient plates. Together with interpretations based on metamorphic rock units, our findings support the existence of thrust contact in the central highlands of Sri Lanka.
ISSN: 0033-4553
EISSN: 1420-9136
DOI: 10.1007/s00024-013-0767-6
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