Detecting Long-Term Deformation of a Loess Landslide from the Phase and Amplitude of Satellite SAR Images: A Retrospective Analysis for the Closure of a Tunnel Event

Zhu, Yaru; Qiu, Haijun; Liu, Zijing; Wang, Jiading; Yang, Dan; Pei, Yanqian; Ma, Shuyue; Du, Chi; Sun, Huanhuan; Wang, Luyao

doi:10.3390/rs13234841

Cited by 11 publications

(9 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The patterns at P1 and P2 suggest that the deformation at the top of the landslide continued from March 2017 until the landslide occurred, while the displacement curves at P3 and P4 imply relative stability at its bottom. These characteristics are typical for a thrust‐type landslide, that is, the upper sediment layer squeezes the lower one to cause deformation, resulting in sliding (Liu et al, 2021; Zhu et al, 2021). An acceleration trend at the top of the landslide starting on 2 August 2022 and lasting until the landslide failure suggests an entering of the tertiary creep stage, which can be used as a precursor signal for landslide warning (Figure 6d).…”

Section: Resultsmentioning

confidence: 99%

“…Shuttle Radar Topography Mission (SRTM) Digital Elevation Model (DEM) is obtained by the space shuttle through C‐band radar interferometry, and the simulated terrain phase can be used for differential interferometry with C‐band Sentinel‐A data, which can effectively reduce the systematic errors. During data processing, the topographic phase was removed using the SRTM DEM with a resolution of 30 m. POD Precise Orbit Ephemerides were used to remove the orbit error (Zhu et al, 2021).…”

Section: Materials and Methodologymentioning

confidence: 99%

“…As landslides can be extensive, complex, and quickly change in behaviour, precise measurements of high acquisition frequency and wide spatial coverage are needed (Casagli et al, 2023; Chen et al, 2021). Field monitoring technologies are usually unsuitable for large area monitoring, since they mainly focus on known landslides and may need investigators to enter dangerous areas (Liu et al, 2021; Zhu et al, 2021). Thus, remote sensing technology has become an irreplaceable method in landslide survey, as it can provide real‐time, high‐precision data to help researchers better understand the evolution of landslides and take timely and effective preventive measures (Carlà et al, 2019; Dai et al, 2020; Rehman et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Early detection of potential landslides along high‐speed railway lines: A pressing issue

Zhu,

Qiu,

Cui

et al. 2023

Earth Surf Processes Landf

Self Cite

View full text Add to dashboard Cite

Early detection of landslides is important for prevention and mitigation of landslide disasters. Especially, accurately identifying potential landslides along high‐speed railway is becoming a pressing issue for operation safety of high‐speed railway. Here, 161 Sentinel‐1A satellite images from March 2017 to September 2022 were acquired to detect potential landslides along the Lanzhou‐Urumqi high‐speed railway (LUHR) in Qinghai. Results show that rainfall is the main cause for the transition from secondary creep (steady state) to tertiary creep (accelerated) at the Jiujiawan landslide. The hot spot analysis method was used to cluster the average line‐of‐sight deformation velocity along the LUHR, effectively extracting five deformation zones that may pose a threat. Optical satellite image analysis revealed four potential landslides and one unstable slope. Furthermore, the rescaled range analysis documented that the Hurst exponent is greater than 0.8 for all four potential landslide instability points, implying that the identified potential landslide areas are still in motion and may pose a threat to the operation of the LUHR. On this basis, we propose a framework for early identification and monitoring of landslides along the high‐speed railway lines that supports landslide hazard managing with the goal to reduce landslide risk.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Materials and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Early detection of potential landslides along high‐speed railway lines: A pressing issue

Zhu,

Qiu,

Cui

et al. 2023

Earth Surf Processes Landf

Self Cite

View full text Add to dashboard Cite

show abstract

“…36.7 + 15.1 years was the mean age of women, and of men 40.5 + 20.1 years. This recommended that during the female's productive spell, women most commonly have Pott's spine [20][21] . The upper lumbar and lower thoracic regions have been supposed to be the maximum affected region in most studies 22 .…”

Section: Discussionmentioning

confidence: 99%

Retrospective Study of Magnetic Resonance Imaging (MRI) Findings in Pott’s Spine

Wahid¹,

Akhtar²,

Kamran³

et al. 2022

PJMHS

View full text Add to dashboard Cite

Tuberculosis is the very communal infection found globally and can nearly all parts of the human body can be affected by it, mostly affect the chest. Among the tuberculosis of the skeletal system; 50% of cases affect the spinal cord. Tuberculosis infection of the spinal cord results in Gibbus deformity, edema, involvement of intervertebral discs, epidural abscess, paravertebral abscess and edema with bone destruction and vertebrae collapse in the soft tissue planes. The most valuable diagnostic tool is MRI as it can clearly show all of the above results in the spine tuberculosis affected patients. Aim: The objective of this research was to know the pattern of incidence and to analyzed the several Pott’s spine pathological processes by means of the MRI scan. Study Design: A Retrospective study. Place and Duration: In the Radiology Department of HMC Peshawar and Orthopedic Department of BKMC Swabi from August 2021 to January 2022. Methods: This study analyzed MRI scans of 90 identified patients of spinal tuberculosis performed at the Radiology Department to govern the pattern of the several pathological lesions. Results: This study institute Pott's spine to be more common in the 21-50 age group, mostly among men. The lumbar and dorsal vertebrae are often affected and several vertebrae are affected frequently, with the most common affected is the L3 vertebra. The involvement of Intervertebral disc and para and pre-vertebral collections were communal, with epidural collection happening in > 75 of patients. 13.3% of the patients have cord oedema. Conclusions: MRI is very sensitive in detecting various Potts spine pathological processes, and the occurrence patterns of these findings were assessed in this research. As the prevalence and incidence of tuberculosis depends on several sensitive epidemiologically parameters, this research could deliver a standard conclusion against which further results could be compared in future studies. Keywords: Tuberculous spondylitis, lumbar abscess, Gibbus

show abstract

“…Landslide surface displacement analysis is the basis of landslide stability research and is of great significance to landslide identification and monitoring [11][12][13][14]. Traditional Remote Sens.…”

Section: Introductionmentioning

confidence: 99%

Efficient Identification and Monitoring of Landslides by Time-Series InSAR Combining Single- and Multi-Look Phases

et al. 2022

Self Cite

View full text Add to dashboard Cite

Identification and monitoring of unstable slopes across wide regions using Synthetic Aperture Radar Interferometry (InSAR) can further help to prevent and mitigate geological hazards. However, the low spatial density of measurement points (MPs) extracted using the traditional time-series InSAR method in topographically complex mountains and vegetation-covered slopes makes the final result unreliable. In this study, a method of time-series InSAR analysis using single- and multi-look phases were adopted to solve this problem, which exploited single- and multi-look phases to increase the number of MPs in the natural environment. Archived ascending and descending Sentinel-1 datasets covering Zhouqu County were processed. The results revealed that nine landslides could be quickly identified from the average phase rate maps using the Stacking method. Then, the time-series InSAR analysis with single- and multi-look phases could be used to effectively monitor the deformation of these landslides and to quantitatively analyze the magnitude and dynamic evolution of the deformation in various parts of the landslides. The reliability of the InSAR results was further verified by field investigations and Unmanned Aerial Vehicle (UAV) surveys. In addition, the precursory movements and causative factors of the recent Yahuokou landslide were analyzed in detail, and the application of the time-series InSAR method in landslide investigations was discussed and summarized. Therefore, this study has practical significance for early warning of landslides and risk mitigation.

show abstract

Detecting Long-Term Deformation of a Loess Landslide from the Phase and Amplitude of Satellite SAR Images: A Retrospective Analysis for the Closure of a Tunnel Event

Cited by 11 publications

References 66 publications

Early detection of potential landslides along high‐speed railway lines: A pressing issue

Early detection of potential landslides along high‐speed railway lines: A pressing issue

Retrospective Study of Magnetic Resonance Imaging (MRI) Findings in Pott’s Spine

Efficient Identification and Monitoring of Landslides by Time-Series InSAR Combining Single- and Multi-Look Phases

Contact Info

Product

Resources

About