Understanding Uneven Land Subsidence in Beijing, China, Using a Novel Combination of Geophysical Prospecting and InSAR

Lin, Guo‐Qiang; Gong, Huili; Li, Jiwei; Zhu, Lin; Aimin, Xue; Liao, Lin; Li, Yongsheng; Zhang, Zhenxin; Hu, Leyin; Gao, Mengtan; Zhou, Chaofan; Rui, Cheng; Zhou, Jiahui

doi:10.1029/2020gl088676

Cited by 24 publications

(22 citation statements)

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“…It has a continental monsoon climate, with distinctive seasons and an average annual temperature of 11.7 • C [10]. From 1978 to 2016, the average annual precipitation in Beijing was 540.2 mm/year, which was mainly concentrated in June to September, accounting for over 80% of the total annual precipitation [7].…”

Section: Study Areamentioning

confidence: 99%

“…Land subsidence refers to a geological phenomenon that the ground elevation decreases in a certain area, due to natural factors or human engineering activities [1]. At present, land subsidence has occurred in more than 200 countries and regions in the world, including central Mexico, Northern Italy, central Iran, the Bandung Basin in Indonesia, Las Vegas in the United States, and the Beijing-Tianjin-Hebei region of China [2][3][4][5][6][7][8][9]. It has Remote Sens.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the superposition of complex factors, such as the world s largest groundwater bowl and the rapid expansion of urban clusters, it has become one of the world's most severe land subsidence areas [15]. By the end of 2016, the maximum accumulated settlement of the Beijing Plain was nearly 1.9 m (Jinzhan, ChaoYang), the area with an accumulated settlement of more than 100 mm has reached 4000 km 2 , and the maximum settlement rate is 159.6 mm/year (Tongzhou, 2012) [7].…”

Section: Introductionmentioning

confidence: 99%

“…Using InSAR technology, numerous scholars have carried out in-depth research on land subsidence in the Beijing Plain. The results show that eight subsidence bowls, including Dongbalizhuang-Dajiaoting, Shunyi-Tianzhu, Chaoyang-Jinzhan, etc., are connected, and the regional uneven subsidence are obvious [7,26] (Figure 1). By combining the EN-VISAT ASAR data, the leveling measurements, and the hydrogeological data, Chen et al (2016) reported that the main reason for the occurrence and evolution of land subsidence in the Beijing Plain is the excessive exploitation of groundwater, and the main contribution layer of subsidence is 100-180 m [27].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is essential to study the mutation characteristics, and the formation mechanism, of the land subsidence in the Beijing Plain. By superimposing the acceleration of urbanization, and the efficient use of underground space and other factors, the differences and non-linearities in the evolution of Beijing s land subsidence have become dramatically complicated [7]. In order to reveal the mechanism that are behind the complex factors, multi-disciplinary research from multiple perspectives is required.…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of Land Subsidence Mutation in Beijing Plain under the Background of Urban Expansion

Lin

Gong

et al. 2021

Remote Sensing

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Under the background of over-exploitation of groundwater and urban expansion, the land subsidence in the Beijing Plain has dramatically increased recently, and has demonstrated obvious mutation characteristics. Firstly, this paper used the land-use transfer matrix (LUTM) to quantify the urban expansion of Beijing, from 1990 to 2015. Secondly, the gravity center migration model (GCM) and standard deviation ellipse (SDE) methods were employed in order to quantitatively reveal the response relationship between urban expansion and land subsidence in the study area. Finally, the research innovatively combines multi-disciplinary (remote sensing, geophysical prospecting, spatial analysis, and hydrogeology), to analyze the mechanism of land subsidence mutation in the Beijing Plain, at multiple scales. The results showed the following: 1. The development direction of the urban expansion and the subsidence bowl (subsidence rate > 50 mm/year) were highly consistent, with values of 116.8° and 113.3°, respectively. 2. At the regional scale, the overall spatial distribution of subsidence mutations is controlled by the geological conditions, and the subsidence mutation time was mainly in 2005 and 2015. The area where mutation occurred in 2005 was basically located in the subsidence bowls, and the correlation between the confined water level and the subsidence rate was relatively high (r > 0.62). The area where the settlement mutation occurred in 2015, was mainly located outside the subsidence bowls, and the correlation between the confined water level and the subsidence rate was relatively low (r < 0.71). 3. In the typical subsidence area, the subsidence mutation occurred mostly in the places where the stratigraphic density is reduced, due to human activities (such as groundwater exploitation). Human activities caused the reduction in stratigraphic density, at 20 m and 90 m vertical depth in urban and rural areas, respectively. 4. At the local scale, clusters of subsidence mutation were located in the fault buffer zone, with a lateral influence range of nearly 1 km in Tongzhou. The scattered settlement mutation is distributed as a spot pattern, and the affected area is relatively small, which basically includes high-rise buildings.

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Section: Study Areamentioning

confidence: 99%