期刊
GEOPHYSICAL JOURNAL INTERNATIONAL
卷 189, 期 3, 页码 1217-1222出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-246X.2012.05353.x
关键词
Satellite geodesy; Gravity anomalies and Earth structure; Dynamics: gravity and tectonics; Crustal structure
We discuss a recent publication by Tedla et al., which presents a crustal thickness map of Africa determined by Euler deconvolution of gravity. In our comment, we first outline the limitations of the data set used by the authors and the deleterious effects of working with free air gravity. Next, we discuss the grievous parameter choices (grid interval, Euler window size, structural index) and incorrect assumptions made by the authors and their serious effects on the results. Finally, we demonstrate with two examples why their results are not helpful in understanding crustal thickness and consequently the tectonic history. This is not specific to Africa, but also true for the application to other parts of the Earth.
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