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Short-term geomorphological evolution of the Poggio Baldi landslide upper scarp via 3D change detection
Landslides ( IF 6.7 ) Pub Date : 2021-03-11 , DOI: 10.1007/s10346-021-01647-z
Paolo Mazzanti , Paolo Caporossi , Alessandro Brunetti , Francesco Ismail Mohammadi , Francesca Bozzano

On 19 March 2010, a 4 million m3 landslide occurred at Poggio Baldi, a small village in the Santa Sofia municipality, central Apennines (Forlì-Cesena, Italy). The landslide caused severe damages to some homes and obstructed both the SS310 national road and the Bidente river. The Poggio Baldi landslide arose in the “Marnoso-Arenacea Romagnola” formation composed of a pelitic-arenaceous turbiditic sequence. The landslide was classified as a rotational landslide, evolving into a partially confined flow-like landslide and causing the reactivation of the deposit of a previous landslide that took place in 1914. This paper reports a study of the phenomena currently occurring on the 100-m high main scarp of this landslide complex. The aim of the study was to assess ground changes that occurred on the upper scarp from 2015 to 2018 and to infer a preliminary evolutionary model capable of supporting short-term landslide scenarios. For this purpose, multi-station terrestrial laser scanner surveys were performed in 2015, 2016, 2017, and 2018. Additionally, an unmanned aerial vehicle three-dimensional photogrammetric survey was carried out in 2016. Analyses of the three-dimensional digital models of the main scarp made it possible to carry out several exhaustive multi-temporal investigations and to derive a detailed three-dimensional change detection scheme for it. The results showed an active geomorphological evolution of the rock scarp area due to frequent rockfalls and topples (of the order of a few m3), with significant local volume changes (a few thousand m3/year) and with potential implications for the long-term evolution of the entire slope.



中文翻译:

通过3D变化检测Poggio Baldi滑坡上层陡坡的短期地貌演化

2010年3月19日,一个400万米3滑坡发生在亚平宁山脉中部(意大利弗利-切塞纳)圣索非亚市的一个小村庄Poggio Baldi。滑坡对一些房屋造成了严重破坏,并阻塞了SS310国道和Bidente河。Poggio Baldi滑坡发生在“ Marnoso-Arenacea Romagnola”地层中,由泥质-砂质的湍流序列组成。该滑坡被归类为旋转滑坡,演变成部分受限的类似流动的滑坡,并导致1914年发生的先前滑坡的沉积物重新活化。该滑坡综合体的主要陡峭地带。该研究的目的是评估2015年至2018年上陡坡上发生的地面变化,并推断出能够支持短期滑坡情景的初步演化模型。为此,分别于2015年,2016年,2017年和2018年进行了多站地面激光扫描仪调查。此外,2016年进行了无人飞行器三维摄影测量。主要问题使进行多次详尽的多时间调查成为可能,并为其导出了详细的三维变化检测方案。结果表明,由于频繁的落石和倒塌(几米的数量级),岩石陡峭区的地貌演化活跃。在2015年,2016年,2017年和2018年进行了多站地面激光扫描仪调查。此外,2016年进行了无人飞行器三维摄影测量调查。可能进行多次详尽的多时间调查,并为其导出详细的三维变化检测方案。结果表明,由于频繁的落石和倒塌(几米的数量级),岩石陡峭区的地貌演化活跃。在2015年,2016年,2017年和2018年进行了多站地面激光扫描仪调查。此外,2016年进行了无人飞行器三维摄影测量调查。可能进行多次详尽的多时间调查,并为其导出详细的三维变化检测方案。结果表明,由于频繁的落石和倒塌(几米的数量级),岩石陡峭区的地貌演化活跃。通过对主要毛发的三维数字模型进行分析,可以进行多次详尽的多时间调查,并为其导出详细的三维变化检测方案。结果表明,由于频繁的落石和倒塌(几米的数量级),岩石陡峭区的地貌演化活跃。通过对主要毛发的三维数字模型进行分析,可以进行多次详尽的多时间调查,并为其导出详细的三维变化检测方案。结果表明,由于频繁的落石和倒塌(几米的数量级),岩石陡峭区的地貌演化活跃。3),局部体积发生重大变化(每年几千m 3),并且对整个斜坡的长期演变具有潜在的影响。

更新日期:2021-03-11
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