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132861 - GlobSed- updated total sediment thickness in the world's oceans.pdf (8.43 MB)

GlobSed: updated total sediment thickness in the world's oceans

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posted on 2023-05-20, 03:54 authored by Straume, EO, Gaina, C, Medvedev, S, Hochmuth, K, Gohl, K, Joanne WhittakerJoanne Whittaker, Abdul Fattah, R, Doornenbal, JC, Hopper, JR
We present GlobSed, a new global 5‐arc‐minute total sediment thickness grid for the world's oceans and marginal seas. GlobSed covers a larger area than previously published global grids and incorporates updates for the NE Atlantic, Arctic, Southern Ocean, and Mediterranean regions, which results in a 29.7% increase in estimated total oceanic sediment volume. We use this new global grid and a revised global oceanic lithospheric age grid to assess the relationship between the total sediment thickness and age of the underlying oceanic lithosphere and its latitude. An analytical approximation model is used to mathematically describe sedimentation trends in major oceanic basins and to allow paleobathymetric reconstructions at any given geological time. This study provides a much‐needed update of the sediment thickness distribution of the world oceans and delivers a model for sedimentation rates on oceanic crust through time that agrees well with selected drill data used for comparison.

Funding

Australian Research Council

History

Publication title

Geochemistry Geophysics Geosystems

Volume

20

Issue

4

Pagination

1756-1772

ISSN

1525-2027

Department/School

Institute for Marine and Antarctic Studies

Publisher

Amer Geophysical Union

Place of publication

2000 Florida Ave Nw, Washington, USA, Dc, 20009

Rights statement

Copyright 2019 American Geophysical Union

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the earth sciences

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