Visibility analysis and archaeology

2013 ◽  
pp. 194-207
Keyword(s):  
2021 ◽  
Vol 13 (3) ◽  
pp. 1017
Author(s):  
Kuanxing Zhu ◽  
Peihua Xu ◽  
Chen Cao ◽  
Lianjing Zheng ◽  
Yue Liu ◽  
...  

Landslides and collapses are common geological hazards in mountainous areas, posing significant threats to the lives and property of residents. Therefore, early identification of disasters is of great significance for disaster prevention. In this study, we used Small Baseline Subset Interferometric Synthetic Aperture Radar (SBAS-InSAR) technology to process C-band Sentinel-1A images to monitor the surface deformation from Songpinggou to Feihong in Maoxian County, Sichuan Province. Visibility analysis was used to remove the influence of geometric distortion on the SAR images and retain deformation information in the visible area. Hot spot and kernel density analyses were performed on the deformation data, and 18 deformation clusters were obtained. Velocity and slope data were integrated, and 26 disaster areas were interpreted from the 18 deformation clusters, including 20 potential landslides and 6 potential collapses. A detailed field investigation indicated that potential landslides No. 6 and No. 8 had developed cracks and were severely damaged, with a high probability of occurrence. Potential collapse No. 22 had developed fissures, exposing a dangerous rock mass and posing significant threats to the lives and property of residents. This study shows that the proposed method that combines visibility analysis, InSAR deformation rates, and spatial analysis can quickly and accurately identify potential geological disasters and provide guidance for local disaster prevention and mitigation.


2019 ◽  
Vol 5 (1) ◽  
pp. 284-308 ◽  
Author(s):  
Natalia López-Sánchez ◽  
Ana Mª Niveau-de-Villedary y Mariñas ◽  
Juan Ignacio Gómez-González

AbstractThis work analyses the influence of the visibility factor on the configuration of the archaic landscape of the Phoenician city of Gadir (Cadiz, Southern Spain) using the three shrines mentioned by classic sources as a reference. Theoretical or cumulative viewshed analyses are the methods used to investigate the visibility relationships each of the shrines has with the sea and the surrounding territory, as well as with each other. Based on these analyses a series of theoretical interpretations regarding the function of these shrines as references for navigation in Antiquity are established.


Author(s):  
Yuanzhen REN ◽  
Huadong GUO ◽  
Guang LIU ◽  
Hanlin YE ◽  
Yixing DING ◽  
...  

2017 ◽  
Vol 12 (1) ◽  
pp. 35-52 ◽  
Author(s):  
Georgios Tsilimigkas ◽  
Evangelia-Theodora Derdemezi
Keyword(s):  

Author(s):  
Byeong-Mun Gwon ◽  
Yong-Gyu Park ◽  
Byeong-Chan Seon ◽  
Ung-Rae No ◽  
Hyeong-Don Choe

Author(s):  
Juan M. Domingo-Santos ◽  
Rubén Fernández- de-Villarán
Keyword(s):  

2021 ◽  
Vol 8 (1) ◽  
pp. 1-22
Author(s):  
George D. Malaperdas

Visibility (or Viewshed) Analysis in archeology is a function given through GIS, in purpose to contribute in the field of archaeology and especially in landscape archeology, by reconstituting the visual panorama of a study area of the past.  The concept of landscape archeology is a multidimensional research process that is not limited to archaeologists but places a special emphasis on a multidisciplinary approach. Mycenaean Messenia was the area of study and analysis of the visual panorama for two important reasons. First of all, it is a large area, which presents territories of varying heterogeneity in terms of morphology, while having a large sea front and an open observation horizon. Secondly, it is one of the continental regions of the Mycenaean period, which has evoked the largest number of residential facilities, structures and tombs, and also has been extensively studied by archaeologists since the 1920s. The main aim of this paper is to make an effort to identify archaeological information, through the bibliographic references of the archaeologists who studied the area, with the GIS visibility analysis. For that reason, the author tries for those residential locations that have been assigned a role or function of the site by archaeologists, such as an observation station, to be controlled in parallel and on the basis of new technologies (GIS and Viewshed Analysis) if this view is verified.


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