A method for using unmanned aerial vehicles for emergency investigation of single geo-hazards and sample applications of this method

Huang, Haifeng; Long, Jingjing; Yi, Wu; Yi, Qinglin; Zhang, Guodong; Lei, Bangjun

doi:10.5194/nhess-17-1961-2017

Cited by 34 publications

(15 citation statements)

References 30 publications

(28 reference statements)

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“…During such actions, the signs of significant damage may be erased precluding the possibility of subsequent and detailed collection of information documenting the event. Similarly, when there are many simultaneous small events or when events occur in remote and poorly accessible areas and no special devices such as small aerial drones (micro-unmanned aerial vehicles [UAVs]) are available [18,19], only terrestrial pictures or aerial oblique pictures taken by rescue or technical teams may be available. Nowadays, they are easy to shoot and fairly good in terms of quality even when using portable phones.…”

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confidence: 99%

Using the Monoplotting Technique for Documenting and Analyzing Natural Hazard Events

Marco¹,

Bozzini²,

Ryter³

et al. 2018

Natural Hazards - Risk Assessment and Vulnerability Reduction

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Historical or present-day oblique terrestrial photographs documenting natural disasters are abundant in archives and may be easily taken nowadays. While in most cases they provide highly informative details, they can hardly be georeferenced, which prevents their systematic use for analyzing and documenting the events and any related signs of damage. In this chapter, we present a monoplotting software program developed at WSL (the WSL Monoplotting Tool) that allows the georeferencing of ordinary individual photographs in order to produce georeferenced vector data by drawing them directly on the photographs and exchanging them with traditional geographic information systems (GIS-Systems). We report on the application of the monoplotting tool on selected study cases of natural events or protection infrastructures in Switzerland.

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confidence: 99%

Using the Monoplotting Technique for Documenting and Analyzing Natural Hazard Events

Marco¹,

Bozzini²,

Ryter³

et al. 2018

Natural Hazards - Risk Assessment and Vulnerability Reduction

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“…In particular, in the field of emergency assistance and management, RPAS platforms are used to reliably and quickly collect data from inaccessible areas (Huang et al, 2017b). Collected data are mostly images but can also be gas concentrations or radioactivity levels as demonstrated by the tragic event in Fukushima (Sanada and Torii, 2015;Martin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Review article: the use of remotely piloted aircraft systems (RPASs) for natural hazards monitoring and management

Giordan

Hayakawa

Nex

et al. 2018

Nat. Hazards Earth Syst. Sci.

145

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Abstract. The number of scientific studies that consider possible applications of remotely piloted aircraft systems (RPASs) for the management of natural hazards effects and the identification of occurred damages strongly increased in the last decade. Nowadays, in the scientific community, the use of these systems is not a novelty, but a deeper analysis of the literature shows a lack of codified complex methodologies that can be used not only for scientific experiments but also for normal codified emergency operations. RPASs can acquire on-demand ultra-high-resolution images that can be used for the identification of active processes such as landslides or volcanic activities but can also define the effects of earthquakes, wildfires and floods. In this paper, we present a review of published literature that describes experimental methodologies developed for the study and monitoring of natural hazards. IntroductionIn the last three decades, the number of natural disasters showed a positive trend with an increase in the number of affected populations. Disasters not only affected the poor and characteristically more vulnerable countries but also those thought to be better protected. The Annual Disaster Statistical Review describes recent impacts of natural disasters on the population and reports 342 naturally triggered disasters in 2016 (Guha-Sapir et al., 2017). This is less than the annual average disaster frequency observed from 2006 to 2015 (376.4 events). However, natural disasters are still responsible for a high number of casualties (8733 death). In the period 2006-2015, the average number of causalities caused annually by natural disasters is 69 827. In 2016, hydrological disasters (177) had the largest share in natural disaster occurrence (51.8 %), followed by meteorological disasters (96; 28.1 %), climatological disasters (38; 11.1 %) and geophysical disasters (31; 9.1 %) (Guha-Sapir et al., 2017). To face these disasters, one of the most important solutions is the use of systems able to provide an adequate level of information for correctly understanding these events and their evolution. In this context, surveying and monitoring natural hazards gained importance. In particular, during the emergency phase it is very important to evaluate and control the phenomenon of evolution, preferably operating in near real time or real time, and consequently, use this information for a better risk assessment scenario. The available acquired data must be processed rapidly to support the emergency services and decision makers.Recently, the use of remote sensing (satellite and airborne platform) in the field of natural hazards and disasters has become common, also supported by the increase in geospatial technologies and the ability to provide and process up-to-date imagery (Joyce et al., 2009;Tarolli, 2014). Remotely sensed data play an integral role in predicting hazard events such as floods and landslides, subsidence events and other ground instabilities. Because of their acquisition mode and capabilPublished by Copern...

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“…In particular, the use of RPAS can be effective for a fast response to natural disasters (Chou et al, 2010;Ezequiel et al, 2014;Xu et al, 2014;Boccardo et al, 2015;Liu et al, 2015;Huang et al, 2017). According to Giordan et al (2015a), two approaches can be adopted for the use of RPAS depending on the slopes steepness.…”

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confidence: 99%

“…Several examples of the use of RPAS for the acquisition of oblique (Salvini et al, 2016(Salvini et al, , 2018Giordan et al, 2015b;Török et al, 2018;Huang et al, 2017) and nadiral image sequences (Saroglou et al, 2018) for the study identification of rock slopes instabilities have been published in recent years.…”

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confidence: 99%

“…Despite such an increasing attention on applications of RPAS images and photogrammetry to landslides risk assessment, 5 only a limited number of articles focuses on applications during emergencies (Chou et al, 2010;Boccardo et al, 2015;Liu et al, 2015;Huang et al, 2017) and on the assessment of the extent of damages caused by natural disasters. Furthermore, none of them, to the best of our knowledge, focuses on testing a procedure that guarantees semi-quantitative information in a relatively short time to provide an evaluation of the residual rockfall risk during emergencies, when time and budget constraints are restrictive.…”

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confidence: 99%

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Brief communication: Remotely piloted aircraft systems for rapid emergency response: road exposure to rockfall in Villanova di Accumoli (Central Italy)

Santangelo¹,

Alvioli²,

Baldo³

et al. 2018

Preprint

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Abstract. The use of Remotely Piloted Aircraft Systems (RPASs) in geosciences is often aimed at the acquisition of an image sequence to produce digital models and orthophotographs of the topographic surface. The technology can be applied for rockfall hazard and risk assessment. To study rockfalls, an approach consists in the application of numerical models for the computation of rockfall trajectories. Data required for such models include accurate digital terrain models, location of the instability source areas, and the mechanical properties of the terrain. In this article, we present an analysis of the earthquake-triggered rockfall that 5 occurred along the SP18 in Villanova di Accumoli (Lazio, central Italy) during the 24 August 2016 seismic sequence. A survey with a multicopter was carried out to obtain an accurate surface model of the terrain, the identification and characterization of the source areas and of other instable blocks in areas not accessible in the field. The investigated area extends for 6,500 m 2 and was covered by 161 photographs that were used to obtain an orthophoto with a ground resolution of 2.5 cm, and a digital surface model with a ground resolution of 20 cm × 20 cm which was processed and fused with GNSS RTK data. We run the 10 numerical model STONE, using the source areas mapped in the field and adopting a slope threshold to get a map showing the rockfall potential trajectories. Results showed that only the part of the road SP18 hit by the rockfall was exposed to further rockfall impacts. In particular, it was observed that 16% (i.e. 5,108) of the 31,800 simulated trajectories reached or crossed this tract of the road. Based on these data, limited protection measures were suggested. The combined use of RPAS data, fused with ground GPS points, an accurate geomorphological survey, and terrain static and dynamic parameters from the literature, 15 allows fast, low-cost and replicable numerical modelling for emergency response and adoption of proper protection measures.

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A method for using unmanned aerial vehicles for emergency investigation of single geo-hazards and sample applications of this method

Cited by 34 publications

References 30 publications

Using the Monoplotting Technique for Documenting and Analyzing Natural Hazard Events

Using the Monoplotting Technique for Documenting and Analyzing Natural Hazard Events

Review article: the use of remotely piloted aircraft systems (RPASs) for natural hazards monitoring and management

Brief communication: Remotely piloted aircraft systems for rapid emergency response: road exposure to rockfall in Villanova di Accumoli (Central Italy)

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