Estimating uplift rate and erodibility from the area-slope relationship: Examples from Brittany (France) and numerical modelling

被引：46

作者：

Lague, D ^{[1
]}

Davy, P ^{[1
]}

Crave, A ^{[1
]}

机构：

[1] Geosci Rennes, UPR 4661 CNRS, F-35042 Rennes, France

来源：

PHYSICS AND CHEMISTRY OF THE EARTH PART A-SOLID EARTH AND GEODESY | 2000年 / 25卷 / 6-7期

关键词：

D O I：

10.1016/S1464-1895(00)00083-1

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We used the local slope / drainage area relationship to derive the basic erosion and tectonic parameters from a topography. Assuming a dynamic equilibrium between uplift and erosion, this relationship is expected to depend quite simply on the rock erodibility, and on the tectonic uplift. This relationship may then be used to quantify independently the effect of lithological variation on the erodibility, and the uplift rate. We tested the method on a computer simulated topography and showed that the uplift information can be precisely calculated from the topographic analysis alone. We then analysed the topography of Brittany (France), and obtained a good agreement with uplift data from comparative levelling studies and river incision analysis. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：543 / 548

页数：6

共 15 条

[1] LOCAL RELIEF AND THE HEIGHT LIMITS OF MOUNTAIN RANGES [J].