Rock fall hazard assessment in Asar Hill, ancient Mabolla City, Mugla—SW Turkey

Gül, Murat; Özbek, Ahmet; Karacan, Ergun

doi:10.1007/s12665-016-6113-4

Cited by 12 publications

(7 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1(B) and 2). Gül et al (2016) reported that Yatağan Formation inclined to NW with an angle of 20°-30°. They also defined various joint sets (73°/179°Dip/Dip direction; 71°/334°, 67°/174°, 74°/149°; 60°/160°, 72°/197°, 72°/8°, 74°/331°).…”

Section: Structural Propertiesmentioning

confidence: 99%

Recent alluvial fan developments in Muğla (SW Turkey)

et al. 2021

Self Cite

View full text Add to dashboard Cite

The Muğla Polje (SW Turkey), which formed as a result of the Pleistocene activity of the Muğla Fault, is an example of a rift basin with two alluvial fans (the Muğla Fan, 3.33 km 2 and the Düğerek Fan, 1.26 km 2 ). This study focuses on the development of these fans through the evaluation of aerial photos, Google-Earth images, the measurements of sedimentary sections, lithological examinations, mineralogical discriminations, and in situ observations. Fractured Jurassic-Cretaceous limestone and upper Miocene-Pliocene clastics have been observed in drainage areas of both fans. In the drainage area of the Muğla Fan, where low strength upper Miocene-Pliocene clastics are abundant, the river incision is higher. As a result, higher amount of sediment supply led to formation of the larger Muğla Fan. Small scale tectonic activities and rainy periods led to the formation of poorly sorted, angular-subangular, and coarser-grained pebblestone-cobblestone deposits, whereas, tectonically quiescent and dry periods were represented by the finer-grained sediments at the apex and upper fan of both fans. They pass into the finer-grained deposits in the downdip direction. Recently, the Muğla and Düğerek fans surface has been covered by urbanization. Man-made channel was built to protect humans from floods, which starts from the apex and extends beyond the distal fan in Polje center. Thus, sediment and water required for fan development have been all cut. Both fan development were initially controlled by nature, such as tectonic activities and climate, and now by humans. Therefore, this study recommends the constant monitoring of the impact of human interference on fan development while regulating the feeding mechanism of fan basin interiors, natural balance of local environment, and urban lives.

show abstract

Section: Structural Propertiesmentioning

confidence: 99%

Recent alluvial fan developments in Muğla (SW Turkey)

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Rockfall analysis based on UAV technology in Kazıklıali Gorge, Aladağlar (Taurus Mountains, Turkey), International Journal of Environment and Geoinformatics (IJEGEO), 7(3): 239-251. DOI: 10.30897/ijegeo.740963 (Topal et al 2007(Topal et al , 2012Ulusay et al 2006;Aydın 2007;Yılmaz et al 2008;Zorlu et al 2008Zorlu et al , 2011Tunusluoglu and Zorlu 2009;Binal and Ercanoǧlu 2010;Aydın et al 2012;Keskin 2013;Zeybek and Şanlıoğlu 2014;Topal and Hatipoglu 2015;Kaya and Topal 2015;Polat et al 2016;Taga and Zorlu 2016;Gül et al 2016;Dinçer et al 2016;Török et al 2017;Geniş et al 2017;Aydın and Eker 2017;Kayabaşı 2018;Ozturk et al 2019). In particular, the provinces of Sivas, Erzurum, Adıyaman, Nevşehir, Niğde, Kayseri and Artvin have the highest rockfalls risk (Ergünay 2007;Gökçe et al 2008;Şener 2019).…”

Section: Reaserch Articlementioning

confidence: 99%

Rockfall Analysis Based on UAV Technology in Kazıklıali Gorge, Aladağlar (Taurus Mountains, Turkey)

Utlu

Öztürk

Şimşek

2020

International Journal of Environment and Geoinformatics

View full text Add to dashboard Cite

Rockfall is one of the most dangerous hazards in mountainous and hilly areas. In this study, rockfall characteristics of the Kazıklıali Gorge (0.25 km 2) in the lower Emli River Basin located in the SW part of the Aladağlar Mountains was investigated using unmanned air vehicle (UAV) technology and rockfall modeling. To determine rockfall properties, an orthophoto and digital surface model which have a 3 cm resolution were created using UAV images. Then, whole fallen blocks more than 0.5 m in diameter were digitized as polygons in GIS. As a result, 10,348 fallen rocks were determined in Kazıklıali Gorge. Via these polygons, density maps were created and frequency distributions were calculated. According to the spatial distribution of density, the geomorphological characteristics of the canyon affect the rockfall density. While the upper and middle parts of the canyon which are the narrowest have high density, the lower part of the valley which is the largest part has low density. The results of 3D rockfall analysis show that the maximum kinetic energy, maximum jump height and maximum velocity reaches 1400 kJ, 15 m and 32 m/s on the canyon walls, respectively. The upper and middle parts of the canyon walls which correspond to high rockfall density have maximum kinetic energy, rock jump height and rock velocity.

show abstract

“…Falling rocks cause great damage to areas like roads, settlement units and infrastructure, in addition to causing great risk for human life (Tanarro and Munoz 2012;Lu et al 2019; Utlu et al 2020a). Rockfalls have high potential to occur rapidly and suddenly at different angles and occur in nearly all conditions and different rock groups (Fityus et al 2013;Singh et al 2016;Gül et al 2016). The basic source area for rockfalls are vertical or almost vertical rock faces (Varnes 1978;Evans and Hungr 1993).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Rockfall Hazard Based On UAV Technology And 3D Rockfall Simulations

Utlu

Şimşek

2021

Preprint

View full text Add to dashboard Cite

In this study, the rockfall hazard in Hacıabdullah village located in the Central Anatolia region of Turkey was assessed with three-dimensional (3D) rockfall analyses based on unmanned aerial vehicle (UAV) technology. With several rockfall disasters experienced in the village, the final event occurred as severe rockfall in 2008 and several houses were evacuated due to rockfall risk after this event. In order for the rockfall hazard to be assessed close to reality in the study area, rocks with falling potential identified in the field were assessed using high-resolution digital surface model (DSM) data produced from images obtained with UAV. During field studies, 17 rocks with fall hazard were identified and dimensional measurements were performed. According to dimensional values, the geometric and volumetric features of each rock were assessed close to reality with the RAMMS 3D rockfall modelling program. As a result of modelling, the kinetic energies of the rocks were identified to reach up to 3476 kJ, with velocities of up to 23.1 m/s and bounce heights of up to 14.57 m. On steep slopes rocks do not travel very long distances; however, in gentle slopes, they were identified to be able to roll very long distances. Rocks that do not move very far from the source are; in other words, where the fall process is dominant, may create damage on roads mainly. However, those with the feature of rolling, in other words, blocks which can travel long distances from the source area, have the potential to cause great damage to settlement areas, roads and trees. According to the hazard map, modelling of rock blocks numbered R6, R12, R13, R14, R15, R16 and R17 showed settlement units were within the high and moderate risk areas.

show abstract

Rock fall hazard assessment in Asar Hill, ancient Mabolla City, Mugla—SW Turkey

Cited by 12 publications

References 26 publications

Recent alluvial fan developments in Muğla (SW Turkey)

Recent alluvial fan developments in Muğla (SW Turkey)

Rockfall Analysis Based on UAV Technology in Kazıklıali Gorge, Aladağlar (Taurus Mountains, Turkey)

Evaluation of Rockfall Hazard Based On UAV Technology And 3D Rockfall Simulations

Contact Info

Product

Resources

About