气候变化领域集成服务门户(CCPortal): Suitability of GNSS for analysis of soil subsidence in Recife in a highly urbanized coastal area

CCPortal

DOI	10.1007/s11069-021-04513-2
	Suitability of GNSS for analysis of soil subsidence in Recife in a highly urbanized coastal area
	de Luna R.M.R.; dos Anjos Garnés S.J.; da Silva Pereira Cabral J.J.; dos Santos S.M.
发表日期	2021
ISSN	0921030X
起始页码	1821
结束页码	1837
卷号	106 期号:3
英文摘要	Recife Metropolitan Region, in the northeast of Brazil, is formed by a coastal plain bounded by hills and by the Atlantic Ocean. Recife Metropolitan Region has about 4 million inhabitants and is the sixth most populous Brazilian metropolitan region. In the last 50 years, there has been an increase in groundwater exploitation causing a piezometric level lowering that reached 100 meters in some points. Consequently, soil subsidence has become a major concern. Geodetic methods have been used worldwide to monitor and quantify vertical deformation of soil in places with large groundwater withdrawal. This article describes the GNSS methodology used in the monitoring of soil subsidence due to groundwater exploitation. Three experiments were carried out to evaluate the most adequate methodology for monitoring soil subsidence applying GNSS receivers. Two of them were carried out, under the same conditions, with the GNSS antennas located at ground level with different baselines (short baseline in experiment 1 and long baseline in experiment 2). In the third experiment, GNSS receivers were installed in landmarks located at the top of four buildings. From these experiments, it was verified that, using GNSS technology, it is possible to detect the occurrence of vertical displacements of the order of 1 cm, in obstacle-free conditions, and a tracking time of at least two or three hours depending on the baseline. Using a known displacement, it was observed that the GNSS system was able to detect the variation of vertical displacement in the order of magnitude researched. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature.
关键词	GNSS survey Groundwater overexploitation Soil subsidence Urban difficulties for GNSS
英文关键词	baseline survey; coastal plain; coastal zone; displacement; GNSS; ground settlement; groundwater abstraction; hazard assessment; metropolitan area; soil analysis; subsidence; Brazil; Pernambuco; Recife; Varanidae
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206181
作者单位	Postgraduate Course in Civil Engineering, Federal University of Pernambuco, Av. Acadêmico Hélio Ramos, s/n. Cidade Universitária, Recife, PE CEP: 50740-530, Brazil; Department of Cartographic Engineering, Federal University of Pernambuco, Av. Acadêmico Hélio Ramos, s/n. Cidade Universitária, Recife, PE CEP: 50740-530, Brazil; Polytechnic School, Postgraduate Course in Civil Engineering, University of Pernambuco, Federal University of Pernambuco, R. Benfica, 455 Av. Acadêmico Hélio Ramos, s/n. Cidade Universitária, Recife, PE CEP: 50740-530, Brazil; Department of Civil and Environmental Engineering, Federal University of Pernambuco, Av. Acadêmico Hélio Ramos, s/n. Cidade Universitária, Recife, PE CEP: 50740-530, Brazil
推荐引用方式 GB/T 7714	de Luna R.M.R.,dos Anjos Garnés S.J.,da Silva Pereira Cabral J.J.,et al. Suitability of GNSS for analysis of soil subsidence in Recife in a highly urbanized coastal area[J],2021,106(3).
APA	de Luna R.M.R.,dos Anjos Garnés S.J.,da Silva Pereira Cabral J.J.,&dos Santos S.M..(2021).Suitability of GNSS for analysis of soil subsidence in Recife in a highly urbanized coastal area.Natural Hazards,106(3).
MLA	de Luna R.M.R.,et al."Suitability of GNSS for analysis of soil subsidence in Recife in a highly urbanized coastal area".Natural Hazards 106.3(2021).