课题组研究人员使用了一个全球尺度的景观演化模型，该模型同化了过去1亿年的古海拔和古气候重建资料。该模型提供了对理解地球系统至关重要的连续量化的指标，从全球地貌到沉积物通量和地层结构。研究小组重新评估了地表过程在控制沉积物向海洋输送中所起的作用，并发现整个新生代的沉积速率稳定，沉积物从陆相盆地向海洋盆地转移的明显不同阶段。模拟提供了一种工具，可以用于识别以前对沉积地层中保存的地质记录以及可用的古海拔和古气候重建的不一致的解释。
据介绍，我们重建过去的景观和塑造它们的过程的能力是我们理解古地球的基础。
附：英文原文
Title: Hundred million years of landscape dynamics from catchment to global scale
Author: Tristan Salles, Laurent Husson, Patrice Rey, Claire Mallard, Sabin Zahirovic, Beatriz Hadler Boggiani, Nicolas Coltice, Malis Arnould
Issue&Volume: 2023-03-03
Abstract: Our capability to reconstruct past landscapes and the processes that shape them underpins our understanding of paleo-Earth. We take advantage of a global-scale landscape evolution model assimilating paleoelevation and paleoclimate reconstructions over the past 100 million years. This model provides continuous quantifications of metrics critical to the understanding of the Earth system, from global physiography to sediment flux and stratigraphic architectures. We reappraise the role played by surface processes in controlling sediment delivery to the oceans and find stable sedimentation rates throughout the Cenozoic with distinct phases of sediment transfer from terrestrial to marine basins. Our simulation provides a tool for identifying inconsistencies in previous interpretations of the geological record as preserved in sedimentary strata, and in available paleoelevation and paleoclimatic reconstructions.
DOI: add2541
Source: https://www.science.org/doi/10.1126/science.add2541