Variations in crustal magma volume flux along the Hawaii-Emperor seamount chain and their implications for plume–lithosphere interactions

Published: 20 June 2022| Version 1 | DOI: 10.17632/wnd2g9rvg9.1
Contributor:
Yongliang Bai

Description

"PresentDayCrustalThick.tif" is the present-day crustal thickness of the NW Pacific based on gravity inversion. "AccretionaryCrustalThickness.tif" is the estimated accretionary crustal thickness based on the present-day crustal thickness by filtering.

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Steps to reproduce

1. Present-day crustal thickness estimation Crustal thickness is the vertical distance between the Moho depth and the sediment layer bottom. The density modeling method and the Moho inversion has been described by Bai et al. (2019). The reference oceanic crustal density is set to 2.84 g/cm3, and the normal mantle density is set to 3.30 g/cm3. The bathymetric data is from ETOPO1 (Amante and Eakins, 2009) and the sediment thickness is from the NGDC (Straume et al., 2019). 2. Accretionary crustal thickness estimation The thickness of the preexisting crust before seamount formation is estimated based on the MiFil method (Vidal and Bonneville, 2004; Adam et al., 2005). The sizes of the minimization filtering window and the median filtering window in this study are 70 km and 600 km, respectively.

Institutions

China University of Petroleum Huadong

Categories

Earth Gravity, Seamount, Crustal Thickness, Mantle Plume

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