Integrated remote sensing-based hazard identification and disaster-causing mechanisms of landslides in Zayu County
CAI Jian’ao1(), MING Dongping1,2(), ZHAO Wenyi1,3, LING Xiao1, ZHANG Yu1, ZHANG Xingxing1
1. School of Information Engineering, China University of Geosciences(Beijing), Beijing 100083, China 2. Frontiers Science Center for Deep-time Digital Earth, China University of Geosciences (Beijing), Beijing 100083, China 3. China Geological Environment Monitoring Institute, Beijing 100081, China
Zayu County, located in the southeastern portion of the Qinghai-Tibet Plateau, is characterized by a large area, significantly varying topographic and climatic characteristics, and frequent landslides. The hazard identification and early warning of landslides are critical to disaster prevention and mitigation in the county. Based on the data acquired from January 2020 to November 2022, including 162 scenes of Sentinel-1A Radar remote sensing images taken on ascending and descending passes and high-resolution optical remote sensing images, this study conducted hazard identification, cataloging, mapping, analysis, and assessment of active landslides in Zayu County using the integrated remote sensing (IRS) technique on the Google Earth platform. A total of 237 active landslide hazards were identified primarily along the Gongrigabuqu River (the western tributary of the Zayu River), Zayu River, both sides of the Nujiang River, and the eastern Zayu River to the western Nujiang River. As revealed by the statistical analysis of the interpretation results combined with quantitative factors such as topography (elevation, slope, lithology) and natural environment (rainfall, temperature), the landslides in Zuobu and Azha villages pose high disaster risks, necessitating further mitigation measures. With relatively accurate results, this study can serve as a reference for disaster prevention and mitigation in Zayu County.
Wang D F, Li Y X, Ren J, et al. Application of Joint UAV Optics and Airborne LiDAR in high level landslide element identification:Taking the Longxigou landslide in Wenchuan,West Sichuan as an example[J/OL]. Geoscience, 2023.https://doi.org/10.19657/j.geoscience.1000-8527.2023.101.
Zhang Y, Ming D P, Zhao W Y, et al. The extraction and analysis of Luding earthquake-induced landslide based on high-resolution optical satellite images[J]. Remote Sensing for Natural Resources, 2023, 35(1):161-170.doi:10.6046/zrzyyg.2022434.
Zhao H W, Zhou L, Tan M L, et al. Early identification of landslide hidden danger in Sichuan-Chongqing power transmission network based on optical remote sensing and SBAS-InSAR[J/OL]. Remote Sensing for Natural Resources, 2023(2023-04-24). https://kns.cnki.net/kcms/detail/10.1759.P.20230423.1809.008.html.
Yang Z Y, Han L Y, Zheng X X, et al. Landslide identification using remote sensing images and DEM based on convolutional neural network:A case study of loess landslide[J]. Remote Sensing for Natural Resources, 2022, 34(2):224-230.doi:10.6046/zrzyyg.2021204.
[13]
Li L, Yao X, Zhang Y, et al. Surface recovery of landslides triggered by 2008 Ms8.0 Wenchuan earthquake (China):A case study in a typical mountainous watershed[J]. Landslides, 2016, 13(4):787-794.
doi: 10.1007/s10346-015-0594-1
Dong J H, Ma Z G, Liang J T, et al. A comparative study of the identification of hidden landslide hazards based on time series InSAR techniques[J]. Remote Sensing for Natural Resources, 2022, 34(3):73-81.doi:10.6046/zrzyyg.2021333.
[15]
Shi X, Xu Q, Zhang L, et al. Surface displacements of the Heifangtai Terrace in Northwest China measured by X and C-band InSAR observations[J]. Engineering Geology, 2019, 259:105181.
doi: 10.1016/j.enggeo.2019.105181
Liu X J. Research on key technologies for early identification,monitoring and forecasting of wide-area landslides with spaceborne radar remote sensing[D]. Xi’an: Chang’an University, 2022.
[17]
Hilley G E, Bürgmann R, Ferretti A, et al. Dynamics of slow-moving landslides from permanent scatterer analysis[J]. Science, 2004, 304(5679):1952-1955.
pmid: 15218146
[18]
Lanari R, Mora O, Manunta M, et al. A small-baseline approach for investigating deformations on full-resolution differential SAR interferograms[J]. IEEE Transactions on Geoscience and Remote Sensing, 2004, 42(7):1377-1386.
doi: 10.1109/TGRS.2004.828196
[19]
Ferretti A, Fumagalli A, Novali F, et al. A new algorithm for processing interferometric data-stacks:SqueeSAR[J]. IEEE Transactions on Geoscience and Remote Sensing, 2011, 49(9):3460-3470.
doi: 10.1109/TGRS.2011.2124465
[20]
Dong J, Liao M, Xu Q, et al. Detection and displacement characterization of landslides using multi-temporal satellite SAR interferometry:A case study of Danba County in the Dadu River basin[J]. Engineering Geology, 2018, 240:95-109.
doi: 10.1016/j.enggeo.2018.04.015
Ge D Q, Dai K R, Guo Z C, et al. Early identification of serious geological hazards with integrated remote sensing technologies:Thoughts and recommendations[J]. Geomatics and Information Science of Wuhan University, 2019, 44(7):949-956.
Lu H Y, Li W L, Xu Q, et al. Early detection of landslides in the upstream and downstream areas of the baige landslide,the Jinsha River based on optical remote sensing and InSAR technologies[J]. Geomatics and Information Science of Wuhan University, 2019, 44(9):1342-1354.
[23]
Hu J, Wu W, Motagh M, et al. FIM-based DSInSAR method for mapping and monitoring of reservoir bank landslides:An application along the Lancang River in China[J]. Landslides, 2023, 20(11):2479-2495.
doi: 10.1007/s10346-023-02097-5
[24]
Zhang C, Li Z, Yu C, et al. An integrated framework for wide-area active landslide detection with InSAR observations and SAR pixel offsets[J]. Landslides, 2022, 19(12):2905-2923.
doi: 10.1007/s10346-022-01954-z
[25]
Dai K, Li Z, Xu Q, et al. Identification and evaluation of the high mountain upper slope potential landslide based on multi-source remote sensing:The Aniangzhai landslide case study[J]. Landslides, 2023, 20(7):1405-1417.
doi: 10.1007/s10346-023-02044-4
[26]
Xie M, Zhao W, Ju N, et al. Landslide evolution assessment based on InSAR and real-time monitoring of a large reactivated landslide,Wenchuan,China[J]. Engineering Geology, 2020, 277:105781.
doi: 10.1016/j.enggeo.2020.105781
Liao M S, Dong J, Li M H, et al. Radar remote sensing for potential landslides detection and deformation monitoring[J]. National Remote Sensing Bulletin, 2021, 25(1):332-341.
doi: 10.11834/jrs.20210162
Yin Y P. Initial study on the hazard-relief strategy of geological hazard in China[J]. The Chinese Journal of Geological Hazard and Control, 2004, 15(2):1-8.
[27]
Zhuo B X. Remote sensing interpretation & application of geology engineering[M]. 2nd ed. Beijing: China Railway Publishing House, 2011.
[28]
Fiorucci F, Cardinali M, Carlà R, et al. Seasonal landslide mapping and estimation of landslide mobilization rates using aerial and satellite images[J]. Geomorphology, 2011, 129(1/2):59-70.
doi: 10.1016/j.geomorph.2011.01.013
Xu Q, Dong X J, Li W L. Integrated space-air-ground early detection,monitoring and warning system for potential catastrophic geohazards[J]. Geomatics and Information Science of Wuhan University, 2019, 44(7):957-966.
Xu Q. Understanding the landslide monitoring and early warning:Consideration to practical issues[J]. Journal of Engineering Geology, 2020, 28(2):360-374.
Dai F C, Deng J H. Development characteristics of landslide hazards in three-rivers basin of southeast Tibetan Plateau[J]. Advanced Engineering Sciences, 2020, 52(5):3-15.
Xu Q, Peng D L, He C Y, et al. Theory and method of monitoring and early warning for sudden loess landslide:A case study at Heifangtai Terrace[J]. Journal of Engineering Geology, 2020, 28(1):111-121.
Zhang Q, Bai Z W, Huang G W, et al. Review of GNSS landslide monitoring and early warning[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(10):1985-2000.
doi: 10.11947/j.AGCS.2022.20220299
[8]
Du H, Song D, Chen Z, et al. Prediction model oriented for landslide displacement with step-like curve by applying ensemble empirical mode decomposition and the PSO-ELM method[J]. Journal of Cleaner Production, 2020, 270:122248.
doi: 10.1016/j.jclepro.2020.122248
Wu C H, Cui P, Li Y S, et al. Seismogenic fault and topography control on the spatial patterns of landslides triggered by the 2017 Jiuzhaigou earthquake[J]. Journal of Mountain Science, 2018, 15(4):793-807.
doi: 10.1007/s11629-017-4761-9