Authors: Yong Liu HaiJun Huang
Publish Date: 2013/03/22
Volume: 68, Issue: 2, Pages: 687-709
Abstract
In this paper we discuss historical and recent land subsidence in the Modern Yellow River Delta Integrated analysis of leveling and relevant background data including groundwater level oil extraction and geological structure has revealed that land displacement is driven by natural and induced components acting at various depths Since the 1950s intense settlements occurred in the modern estuary delta lobes Between 2002 and 2008 the subsidence center of Dongying and Guangrao exhibited a typical subsidence area with subsidence rates of 282 and 647 mm/years respectively Higher magnitudes are associated with groundwater withdrawals and oil–gas field exploitations which induce the compaction of a deep clayey layer There existed a significant linear positive correlation between groundwater level and elevation in the center of the deep groundwater depression cone The major contributor of natural subsidence is tectonic movements while moderate sinking due to the natural consolidation of the recent delta subsoil is still actingThe authors are grateful to Professor Ding Dong at the Qingdao Institute of Marine Geology and Chief Engineer Zou Zuguang at the Lubei Institute of Geological and Prospecting Engineering in Dezhou This paper is financially supported by the National Nature Science Foundation of China Grant No 40676037 and No 41276082 and the Knowledge Innovation Program of the Chinese Academy of Sciences Grant No KZCX2EW207
Keywords: