scholarly journals LAND SUBSIDENCE AND ITS EFFECTS ON THE URBAN AREA OF TEPIC CITY, MEXICO

2018 ◽  
Author(s):  
WILLIAM H. HERRERA LEÓN ◽  
JESÚS PACHECO MARTÍNEZ ◽  
MARTÍN HERNÁNDEZ MARÍN ◽  
RAUDEL PADILLA CENICEROS ◽  
MARÍA DE LA LUZ PÉREZ REA
Keyword(s):  
Urban Area ◽  
Land Subsidence

Land subsidence and Late Glacial environmental evolution of the Como urban area (Northern Italy)

2007 ◽  
Vol 173-174 ◽  
pp. 67-86 ◽  
Author(s):  
Valerio Comerci ◽  
Sabrina Capelletti ◽  
Alessandro M. Michetti ◽  
Sabina Rossi ◽  
Leonello Serva ◽  
...  
Keyword(s):  
Urban Area ◽  
Land Subsidence ◽  
Late Glacial ◽  
Northern Italy ◽  
Environmental Evolution

Land subsidence analysis in Surabaya urban area using time series InSAR method

2018 ◽  
Author(s):  
Ira Mutiara Anjasmara ◽  
Sendy Ayu Yulyta ◽  
Mokhamad Nur Cahyadi ◽  
Khomsin ◽  
Muhammad Taufik ◽  
...  
Keyword(s):  
Time Series ◽  
Urban Area ◽  
Land Subsidence ◽  
Subsidence Analysis

scholarly journals LAND SUBSIDENCE MONITORING IN DEZHOU CITY BASED ON SBAS-INSAR TECHNOLOGY

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 299-304
Author(s):  
G. Huang ◽  
H. Fan ◽  
L. Lu ◽  
W. Yu
Keyword(s):  
Urban Area ◽  
Land Subsidence ◽  
Large Scale ◽  
Vertical Direction ◽  
Ground Subsidence ◽  
Large Area ◽  
Coverage Area ◽  
Radar Images ◽  
Seasonal Characteristics ◽  
Sbas Insar

Abstract. To monitor the large area land subsidence in Dezhou city, Shandong province, China. This paper uses 23 scenes of Sentinel-1A radar images from August 2017 to February 2019, and based on small baseline subset (SBAS) technology to obtain the subsidence information in Dezhou urban area. The monitoring results show that: Dezhou city has a serious subsidence phenomenon in large coverage area. A subsidence funnel with Chenzhuang as the center was formed. The average annual subsidence rate (along the vertical direction) of the subsidence center exceeded 45 mm/yr. There was also a serious subsidence phenomenon in the eastern and northeastern parts of the urban area, and there was a tendency of forming a whole area. After detailed data analysis, it is found that the ground subsidence presents seasonal characteristics closely related to the groundwater level and is affected by large-scale engineering construction on the surface.

scholarly journals Assessing the Accuracy of ALOS/PALSAR-2 and Sentinel-1 Radar Images in Estimating the Land Subsidence of Coastal Areas: A Case Study in Alexandria City, Egypt

2021 ◽  
Vol 13 (9) ◽  
pp. 1838
Author(s):  
Noura Darwish ◽  
Mona Kaiser ◽  
Magaly Koch ◽  
Ahmed Gaber
Keyword(s):  
Standard Deviation ◽  
Urban Area ◽  
Land Subsidence ◽  
Vertical Displacement ◽  
Western Desert ◽  
Alos Palsar ◽  
Processing Scheme ◽  
Radar Images ◽  
Subsidence Rate ◽  
Alexandria City

Recently, the Differential Interferometric Synthetic Aperture Radar (DInSAR) technique is widely used for quantifying the land surface deformation, which is very important to assess the potential impact on social and economic activities. Radar satellites operate in different wavelengths and each provides different levels of vertical displacement accuracy. In this study, the accuracies of Sentinel-1 (C-band) and ALOS/PALSAR-2 (L-band) were investigated in terms of estimating the land subsidence rate along the study area of Alexandria City, Egypt. A total of nine Sentinel-1 and 11 ALOS/PALSAR-2 scenes were used for such assessment. The small baseline subset (SBAS) processing scheme, which detects the land deformation with a high spatial and temporal coverage, was performed. The results show that the threshold coherence values of the generated interferograms from ALOS-2 data are highly concentrated between 0.2 and 0.3, while a higher threshold value of 0.4 shows no coherent pixels for about 80% of Alexandria’s urban area. However, the coherence values of Sentinel-1 interferograms ranged between 0.3 and 1, with most of the urban area in Alexandria showing coherent pixels at a 0.4 value. In addition, both data types produced different residual topography values of almost 0 m with a standard deviation of 13.5 m for Sentinel-1 and −20.5 m with a standard deviation of 33.24 m for ALOS-2 using the same digital elevation model (DEM) and wavelet number. Consequently, the final deformation was estimated using high coherent pixels with a threshold of 0.4 for Sentinel-1, which is comparable to a threshold of about 0.8 when using ALOS-2 data. The cumulative vertical displacement along the study area from 2017 to 2020 reached −60 mm with an average of −12.5 mm and mean displacement rate of −1.73 mm/year. Accordingly, the Alexandrian coastal plain and city center are found to be relatively stable, with land subsidence rates ranging from 0 to −5 mm/year. The maximum subsidence rate reached −20 mm/yr and was found along the boundary of Mariout Lakes and former Abu Qir Lagoon. Finally, the affected buildings recorded during the field survey were plotted on the final land subsidence maps and show high consistency with the DInSAR results. For future developmental urban plans in Alexandria City, it is recommended to expand towards the western desert fringes instead of the south where the present-day ground lies on top of the former wetland areas.

scholarly journals MONITORING THE SURFACE SUBSIDENCE OF HANDAN CITY USING SENTINEL-1A IMAGES AND SBAS-INSAR TECHNOLOGY

2019 ◽  
Vol XLII-2/W13 ◽  
pp. 1933-1937 ◽  
Author(s):  
G. Huang ◽  
H. Chen ◽  
X. Li ◽  
G. Cheng ◽  
Z. Yu ◽  
...  
Keyword(s):  
Time Series ◽  
Urban Area ◽  
Land Subsidence ◽  
Maximum Settlement ◽  
Research Areas ◽  
Cumulative Deformation ◽  
Sbas Insar ◽  
Surrounding Areas ◽  
Subsidence Monitoring ◽  
Handan City

<p><strong>Abstract.</strong> The Sentinel-1 data is currently the latest free SAR data and is well suited for land subsidence monitoring based on InSAR technology due to its 6-day revisit cycle. In this paper, the urban area and surrounding areas of Handan City are used as research areas, and 29 scences of S1A data (December 2017 &amp;ndash; December 2018) was used for time series SBAS processing. The results shows that the surface cumulative deformation ranged from -42 to 30&amp;thinsp;mm in most regions of Handan City. The maximum settlement is 69&amp;thinsp;mm, which is near the Hankuang Group Julong Company. The areas where the settlement is obvious include Wu'an City, Daishan Village, Dashe Town, Zhangxibao Town, Baijia Street, Dongxingtai Village, Gaonan Village and Hankuang Group Julong Company. Slightly elevated in the southeast of Handan City.</p>

Ground Fracturation in Urban Area: Monitoring of Land Subsidence Controlled by Buried Faults with InSAR Techniques (Ciudad Guzmán: Mexico)

2014 ◽  
pp. 1027-1031
Author(s):  
Carlo Alberto Brunori ◽  
Christian Bignami ◽  
Francesco Zucca ◽  
Gianluca Groppelli ◽  
Gianluca Norini ◽  
...  
Keyword(s):  
Urban Area ◽  
Land Subsidence ◽  
Area Monitoring ◽  
Buried Faults

scholarly journals Multi-Scale Analysis of the Relationship between Land Subsidence and Buildings: A Case Study in an Eastern Beijing Urban Area Using the PS-InSAR Technique

2018 ◽  
Vol 10 (7) ◽  
pp. 1006 ◽  
Author(s):  
Qin Yang ◽  
Yinghai Ke ◽  
Dongyi Zhang ◽  
Beibei Chen ◽  
Huili Gong ◽  
...  
Keyword(s):  
Urban Area ◽  
Land Subsidence ◽  
Scale Analysis ◽  
Multi Scale ◽  
The Relationship ◽  
Multi Scale Analysis
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