globalchange  > 气候变化与战略
DOI: 10.1007/s11069-021-04513-2
论文题名:
Suitability of GNSS for analysis of soil subsidence in Recife in a highly urbanized coastal area
作者: de Luna R.M.R.; dos Anjos Garnés S.J.; da Silva Pereira Cabral J.J.; dos Santos S.M.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期:3
起始页码: 1821
结束页码: 1837
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168980
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Natural Hazards,2021-01-01,106(3)
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