2026-07-20T00:44:13Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:87162026-06-18T10:38:18ZDOIDBDOIDB.GFZ

false4DOIDB.GFZ 10.5880/GFZ.CUEG.2026.001 Bott, Judith Judith Bott 0000-0002-2018-4754 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany May, Tilman Tilman May 0009-0002-6923-3622 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Kumar, Ajay Ajay Kumar 0000-0002-2669-355X Indian Institute of Science Education and Research Pune, Pune, India Schiller, Carl Josef Carl Josef Schiller 0009-0006-3807-500X ETH Zurich, Zurich, Switzerland Scheck-Wenderoth, Magdalena Magdalena Scheck-Wenderoth 0000-0003-0426-8269 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany GFZ Data Services 2026 Geological setting > Earth's structure > Earth mantle > lithosphere-asthenosphere boundary Rock and melt physics > Measured property > elastic wave velocity > S-wave Science Keywords > EARTH SCIENCE Science Keywords > EARTH SCIENCE > SOLID EARTH Science Keywords > EARTH SCIENCE > SOLID EARTH > GEOTHERMAL DYNAMICS Science Keywords > EARTH SCIENCE > SOLID EARTH > TECTONICS Bott, Judith Judith Bott 0000-0002-2018-4754 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Bott, Judith GFZ Helmholtz Centre for Geosciences, Potsdam, Germany 2026-06-04 Dataset 10.1007/978-3-540-88558-0_3 10.1016/j.epsl.2009.03.014 10.1029/2009GC002540 10.1016/j.epsl.2005.04.033 10.1093/petrology/egn033 10.1029/2000JB900042 https://www.geo3bcn.csic.es/es/defended-theses/thermal-and-chemical-imaging-of-the-upper-mantle-anomalies-application-to-western-mediterranean/ 10.1029/2022GL099476 10.1029/2019GC008777 10.1093/petrology/29.3.625 10.1029/2024JB029656 10.1029/JB082i005p00803 10.1093/gji/ggt095 10.1785/0120230273 10.1017/CBO9780511807442 10.5281/zenodo.1243862 10.17611/dp/emc.2025.csem2globe.1 10.17611/dp/emc.2025.csem2.europe.1 10.17611/dp/emc.2024.reveal.1 https://cos.ethz.ch/models.html https://schaeffer.ca/tomography/sl2013sv/#ModelDownloads Creative Commons Attribution 4.0 International The lithosphere-asthenosphere boundary (LAB) marks the base of the Earth’s outer layer where heat is transferred primarily by conduction as compared to prevailing convective heat transport below. Spatial variations in LAB depth reveal the differential evolution of tectonic systems (e.g., rifts and orogens), thus enabling a better understanding of geodynamic processes. Further, the topography of the LAB exerts control on the coupling of the lithosphere to asthenospheric flow, modulating the distribution of present-day stresses and active deformation of the tectonic plates. We have derived global depth variations of the LAB from temperature-converted shear-wave tomography models assuming that the threshold temperature between conduction and mantle convection is 1300 °C. Shear-wave velocity in the mantle is controlled by both in situ pressure-temperature conditions and mineralogical rock composition. Therefore, our velocity-to-temperature conversion builds on a framework of rock physical properties generated through a Gibbs free energy minimization to determine thermodynamically stable phase and mineral assemblages throughout upper mantle pressure and temperature conditions. In this data publication, we provide thermal LAB depths corresponding to one European-scale and three global-scale tomography models. The data release includes (i) a data description file with information on the input tomographic models, the conversion method and spatial variations in LAB depth (illustrated); and (ii) four data files with LAB depth values spatially sampled according to the input tomography models.
Coverage: CSEMv2 Globe -180 180 -89 89 Coverage: CSEMv2 Europe -36 61 23 80 Coverage: REVEAL and SL2013sv -180 180 -90 90