GlobSed: Updated Total Sediment Thickness in the World's Oceans
Research output: Contribution to journal › Journal article › Research › peer-review
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.
| Original language | English |
|---|---|
| Journal | Geochemistry, Geophysics, Geosystems |
| Volume | 20 |
| Issue number | 4 |
| Pages (from-to) | 1756-1772 |
| Number of pages | 17 |
| ISSN | 1525-2027 |
| DOIs | |
| Publication status | Published - 2019 |
| Externally published | Yes |
Bibliographical note
Funding Information:
The Associate Editor Alina Polonia and reviewer Neil Mitchell and an anonymous reviewer are thanked for their excellent suggestions that improved our manuscript. E. S., C. G., and S. M. acknowledge support from the Research Council of Norway through its Centers of Excellence fund ing scheme, project 223272. E. S. acknowledges support from the MatNat Faculty at the University of Oslo. K. H. has been funded by the German Research Foundation (DFG) grant GO‐ 274/15. J. M. W. acknowledges funding from the Australian Research Council grant DE150130. The NAG‐TEC group and sponsors are acknowledged for use of the North Atlantic grid (Hopper et al., 2014; Péron‐Pinvidic et al., 2017). Grid compilation and figures were made using Generic Mapping Tools (GMT; Wessel et al., 2013). Perceptually uniform color maps are used in this study to prevent visual distortion of the data (Crameri, 2018a; Crameri, 2018b). The digital global total sediment thickness (GlobSed) and the oceanic lithosphere age grid will be archived by NCEI.
Funding Information:
The Associate Editor Alina Polonia and reviewer Neil Mitchell and an anonymous reviewer are thanked for their excellent suggestions that improved our manuscript. E.?S., C.?G., and S.?M. acknowledge support from the Research Council of Norway through its Centers of Excellence funding scheme, project 223272. E.?S. acknowledges support from the MatNat Faculty at the University of Oslo. K.?H. has been funded by the German Research Foundation (DFG) grant GO-274/15. J.?M.?W. acknowledges funding from the Australian Research Council grant DE150130. The NAG-TEC group and sponsors are acknowledged for use of the North Atlantic grid (Hopper et al.,; P?ron-Pinvidic et al.,). Grid compilation and figures were made using Generic Mapping Tools (GMT; Wessel et al.,). Perceptually uniform color maps are used in this study to prevent visual distortion of the data (Crameri,; Crameri,). The digital global total sediment thickness (GlobSed) and the oceanic lithosphere age grid will be archived by NCEI.
Publisher Copyright:
©2019. American Geophysical Union. All Rights Reserved.
- lithospheric age, marine geophysics, sediment thickness
Research areas
ID: 355627388