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CHD","award":["300102261103"],"award-info":[{"award-number":["300102261103"]}]},{"name":"Fundamental Research Funds for the Central Universities, CHD","award":["202105"],"award-info":[{"award-number":["202105"]}]},{"name":"Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province","award":["42007269"],"award-info":[{"award-number":["42007269"]}]},{"name":"Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province","award":["2020YFC1512000"],"award-info":[{"award-number":["2020YFC1512000"]}]},{"name":"Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province","award":["220126200089"],"award-info":[{"award-number":["220126200089"]}]},{"name":"Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province","award":["BX20200286"],"award-info":[{"award-number":["BX20200286"]}]},{"name":"Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province","award":["2021M700526"],"award-info":[{"award-number":["2021M700526"]}]},{"name":"Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province","award":["300102261103"],"award-info":[{"award-number":["300102261103"]}]},{"name":"Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province","award":["202105"],"award-info":[{"award-number":["202105"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Frequent rockfall events pose a major threat to the safe operation of the Taihang Grand Canyon Scenic Area (GCSA) in China. The traditional techniques for identifying potential rockfall sources and hazard assessment methods are often challenged in the alpine canyon landform. This study aims to establish an early identification framework for regional potential rockfall sources applicable to the canyon region and to assess rockfall hazards in potentially hazardous areas using unmanned aerial vehicle (UAV) photogrammetry. Specifically, by incorporating high-precision topographic information and geotechnical properties, the slope angle distribution method was used for static identification of potential rockfall sources. Moreover, SBAS-InSAR technology was used to describe the activity of potential rockfall sources. Finally, taking the key potentially hazardous area of the Sky City scenic spot as an example, the Rockfall Analyst tool was used to analyze the rockfall frequency, bounce height and energy characteristics based on the high-precision UAV 3D real scene model, and the analytic hierarchy process was introduced to achieve quantitative rockfall hazard assessment. The results show that the potential rockfall source areas in the Taihang GCSA is 33.47 km2 (21.47%), mainly distributed in strips on the cliffs on both sides of the canyon, of which the active rockfall source area is 2.96 km2 (8.84%). Taking the scenic spot of Sky City as example, the proposed UAV-based real scene modeling technology was proven to be able to quickly and accurately construct a 3D high-precision model of the canyon area. Moreover, the 3D rockfall simulation showed that the high-energy rockfall area was mainly distributed at the foot of the steep cliff, which mainly threatens the tourist distribution center below. The early identification and quantitative evaluation scheme of rockfall events proposed in this study can provide technical reference for the prevention and control of rockfall hazards in similar alpine valley areas.<\/jats:p>","DOI":"10.3390\/rs14133021","type":"journal-article","created":{"date-parts":[[2022,6,23]],"date-time":"2022-06-23T22:43:00Z","timestamp":1656024180000},"page":"3021","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Rockfall Hazard Assessment in the Taihang Grand Canyon Scenic Area Integrating Regional-Scale Identification of Potential Rockfall Sources"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1039-6160","authenticated-orcid":false,"given":"Jiewei","family":"Zhan","sequence":"first","affiliation":[{"name":"College of Geological Engineering and Geomatics, Chang\u2019an University, Xi\u2019an 710054, China"},{"name":"Key Laboratory of Western China\u2019s Mineral Resources and Geological Engineering, Ministry of Education, Chang\u2019an University, Xi\u2019an 710054, China"}]},{"given":"Zhaoyue","family":"Yu","sequence":"additional","affiliation":[{"name":"College of Geological Engineering and Geomatics, Chang\u2019an University, Xi\u2019an 710054, China"}]},{"given":"Yan","family":"Lv","sequence":"additional","affiliation":[{"name":"Key Laboratory of Western China\u2019s Mineral Resources and Geological Engineering, Ministry of Education, Chang\u2019an University, Xi\u2019an 710054, China"}]},{"given":"Jianbing","family":"Peng","sequence":"additional","affiliation":[{"name":"College of Geological Engineering and Geomatics, Chang\u2019an University, Xi\u2019an 710054, China"},{"name":"Key Laboratory of Western China\u2019s Mineral Resources and Geological Engineering, Ministry of Education, Chang\u2019an University, Xi\u2019an 710054, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8790-7366","authenticated-orcid":false,"given":"Shengyuan","family":"Song","sequence":"additional","affiliation":[{"name":"College of Construction Engineering, Jilin University, Changchun 130026, China"}]},{"given":"Zhaowei","family":"Yao","sequence":"additional","affiliation":[{"name":"College of Geological Engineering and Geomatics, Chang\u2019an University, Xi\u2019an 710054, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1016\/S0169-555X(98)00116-0","article-title":"Rockfall activity from an alpine cliff during thawing periods","volume":"28","author":"Matsuoka","year":"1999","journal-title":"Geomorphology"},{"key":"ref_2","unstructured":"Stead, D., and Clague, J.J. 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