Global Centroid Distribution of Magnetized Layer From World Digital Magnetic Anomaly Map. Issue 12 (22nd December 2017)

• Record Type: Journal Article
• Authors: Tanaka, Akiko
• Is Part Of: Tectonics. Volume 36:Issue 12(2017)
• Page Start: 3248
• Page End: 3253
• Publication Date: 2017-12-22
• Subjects: crustal thermal regime -- magnetized layer -- World Digital Magnetic Anomaly Map; Geology, Structural -- Periodicals; 551.8
• DOI: 10.1002/2017TC004770
• Languages: English
• ISSNs: 0278-7407

Abstract

Abstract : Global distribution of the centroid of magnetic layer, Z o, was estimated from spectral analysis of aeromagnetic and marine magnetic anomalies using recently released new global digital magnetic anomaly data, World Digital Magnetic Anomaly Map (WDMAM) version 2.0. Z o distribution provides a comprehensive view of regional‐scale trends of lithospheric thickness; Z o is generally shallower in oceanic ridges and deeper older continents, which is consistent with previous works. Z o is closely related to reasonable average thermal regime, and its correspondence with tectonic regime indicates that Z o is useful to delineate regional crustal thermal structure. It is expected that Z o combined with multidisciplinary data should help to infer geophysical and geological information in less explored regions. Key Points: Global distribution of the centroid of magnetic layer, Z o, is revealed Z o can be used as a proxy for the thermal structure