Permanent GNSS Monitoring of Landslide Umka

Samardžić-Petrović, Mileva; Popovic, Jovan; Đurić, Uroš; Abolmasov, Biljana; Pejić, Marko; Marjanović, Miloš

doi:10.7251/stp2014091s

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…The Umka landslide is one of the most investigated landslides in Serbia. Various methods (permanent GN-SS monitoring, photogrammetry, geotechnical and geophysical investigations, boreholes and explorations shafts etc), have been employed by [1,2,5], in order to characterize the landslides causative and triggering factors, overall geometry etc. Research by [1] dis-played that the Umka landslide is a slow to very slow landslide with a reactivation period of several years to several decades.…”

Section: Landslide "Umka"mentioning

confidence: 99%

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Landslide investigations using the geoelectrical scanning method and ground penetrating radar: Case studies

Arnaut¹,

Sretenović²

2021

Tehnika

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Geotechnical investigations of landslides for future mitigation are a complex task. To obtain relevant information, various geophysical methods are used, with varying degrees of success. The geoelectrical scanning method, also known as Electrical Resistivity Tomography (ERT) has been successfully applied in several locations in Serbia in the las three decades. The geoelectrical scanning method was used during investigations of landslides: Umka, Lukovska banja, Tara, and Trandžament, while both geoelectrical scanning and Ground Penetrating Radar (GPR) were utilized at the Trandžament landslide. The achieved results from both methods are mutually correlated at the Trandžament landslide. Correlation of GPR data with geoelectrical scanning data was only possible since there were no nearsurface low resistivity zones in the Trandžament landslide body. Otherwise, electromagnetic signal attenuation would be high in the presence of near-surface low resistivity zones, and a quality signal would be impossible to detect at the receiving antenna.

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Section: Landslide "Umka"mentioning

confidence: 99%

“…The Umka landslide was investigated by various geotechnical, geophysical and geological methods and extensive data was collected [1]. Investigation by permanent GNSS monitoring categorized the Umka landslide as slow to very slow [5].…”

Section: Introductionmentioning

confidence: 99%

Landslide investigations using the geoelectrical scanning method and ground penetrating radar: Case studies

Arnaut¹,

Sretenović²

2021

Tehnika

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“…Može se uočiti da su greške koje se dobijaju duž Z ose većih vrednosti u odnosu na greške u odnosu na X i Y ose respektivno. To se može objasniti činjenicom da je preciznost pozicioniranja GNSS-a dva puta manja po visini od horizontalnog polozaja [8]. Na osnovu analize RMSE greške u pogledu količine orijentacionih tačaka, ne možemo uticati na smanjenje greške, ali se povećava pouzdanost ocena.…”

Section: Rezultati I Diskusijaunclassified

Optimization of the number and position of ground control point configured for UAV survey

Stojković¹,

Obrenović²

2021

Tehnika

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This research aims to present the most optimal solution in terms of position and number of orientation points (GCP) for surveying using the UAV method in the area of the suburban settlement of Duboko in Umka. The images were processed in the AgiSoft software using the SfM - Structure from Motion approach, which is integrated within this software system. At the very beginning of the study, reference data which was obtained by processing with a complete set of 36 reliable reference points, were declared as "truth". The result of different combinations, which were created based on four rules defined in the process of selecting points, were analyzed and compared with "truth" values. Based on that analysis, the most optimal result was the combination of 20 GCP evenly distributed in the survey area of 50 ha.

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“…Akin et al (2021) adopted RocPro3D to assess the effectiveness of a rockfall ditch in Akköy village, located in the steeps of Cappadocia, Turkeyto perform 3-D probabilistic rockfall analyses to confirm if rock blocks can cross the ditch. Samardžić-Petrović et al (2020) have performed a detailed analysis of mass movements in a landslide since 2018 with periodic measurements using a geodetic deformation network consisting of sixty-six points, four of which are fixed points. The detected mass movements including horizontal changes of approximately 21% of all installed points are 0 -2 cm, 33% are 2.01 -4 cm, 23% are 4.01 -6 cm, and finally, 33% are greater than 6 cm.…”

Section: Introductionmentioning

confidence: 99%

Monitoring mass movements using Network-RTK measurement technique and producing potential rockfall scenarios in a paleo-landslide area

Kadı

Akın

Usta

2023

Reports on Geodesy and Geoinformatics

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Mass movements resulting from landslides cause significant losses in terms of lives and property. Periodic observations of these movements using geodetic measurement techniques help to prevent these losses. Network-RTK measurement technique produces real-time location with centimeter accuracy, based on phase observations using a network of reference stations. In this study, the paleo-landslide area in the Işıklar location of Trabzon province, Esiroğlu district, Turkey, was chosen as the application area. This study aims to measure the application area between 2019 and 2021, using the Network-RTK technique to determine the mass movements. Additionally, there is a rock block in an area with a steep slope. The possible movement of this rock block is a threat to infrastructure facilities, residential areas, agricultural areas, and life safety if the mass movement continues. Within this scope, the potential movement scenarios of the block were produced using RocPro3D software and UAV photogrammetry. Scenarios following an ongoing mass movements in the region triggering another mass movement are discussed. In the light of the results obtained, mass movements in the vertical direction of up to 28 cm were detected in the area where the rock block is located in the last 2 years. The periodic continuation of mass movements in the study area, declared a disaster-prone area, confirms the importance of the rock block in the region. In another phase of the study, possible movement scenarios of the rock block were examined using a rockfall analysis. In this context, with the help of an unmanned aerial vehicle, a digital elevation model and orthophoto map of the region where the rock block is likely to move was produced and a base map to be used in rockfall analysis was obtained. As a result of the rockfall analysis, maps showing the speed, energy, spread, possible impacts, and stopping points were produced. With the examination of these maps, it has been determined that residential areas, agricultural areas, and infrastructure facilities in the study area may be significantly damaged.

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Permanent GNSS Monitoring of Landslide Umka

Cited by 4 publications

References 6 publications

Landslide investigations using the geoelectrical scanning method and ground penetrating radar: Case studies

Landslide investigations using the geoelectrical scanning method and ground penetrating radar: Case studies

Optimization of the number and position of ground control point configured for UAV survey

Monitoring mass movements using Network-RTK measurement technique and producing potential rockfall scenarios in a paleo-landslide area

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