Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometry
Abstract The application of geophysical monitoring technologies may offer an opportunity to understand the dynamic of slopes in response to factors triggering their instability. In this study, Ambient Noise Interferometry was used as a monitoring approach on a man-made reduced-scale vertical slope a...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Geologia
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| Series: | Brazilian Journal of Geology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892019000200305&lng=en&tlng=en |
| _version_ | 1811326829021102080 |
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| author | Yawar Hussain Martin Cardenas-Soto Rogerio Uagoda Salvatore Martino Juan Rodriguez-Rebolledo Omar Hamza Hernan Martinez-Carvajal |
| author_facet | Yawar Hussain Martin Cardenas-Soto Rogerio Uagoda Salvatore Martino Juan Rodriguez-Rebolledo Omar Hamza Hernan Martinez-Carvajal |
| author_sort | Yawar Hussain |
| collection | DOAJ |
| description | Abstract The application of geophysical monitoring technologies may offer an opportunity to understand the dynamic of slopes in response to factors triggering their instability. In this study, Ambient Noise Interferometry was used as a monitoring approach on a man-made reduced-scale vertical slope and on a natural-scale landslide in Sobradinho (Brazil), under the influence of mechanical stress and rainfall, respectively. For both experiments, we adopted similar data acquisition system and processing workflow. After preprocessing of ambient seismic noise, the time-lapse changes were determined in terms of relative velocity changes using the moving window cross spectral technique. For the vertical slope, terrestrial laser scanning was also performed to detect crack or fissure generation. The prototype experiment results showed a decreasing trend of relative velocity changes and reached a minimum value of -0.6% at the end of the experiment. No change was detected on the digital elevation model that was computed from terrestrial laser scanning images, due to the absence of centimeter scale superficial fissures. At natural scale (Sobradinho landslide), no significant variation in relative velocity changes was detected for the rainy and non-rainy days, mainly because of the inadequate change in the degree of saturation, which was found within a relatively short period of data acquisition. |
| first_indexed | 2024-04-13T14:56:12Z |
| format | Article |
| id | doaj.art-7bdbc5eede97475c8bb459bf05dfeade |
| institution | Directory Open Access Journal |
| issn | 2317-4692 |
| language | English |
| last_indexed | 2024-04-13T14:56:12Z |
| publisher | Sociedade Brasileira de Geologia |
| record_format | Article |
| series | Brazilian Journal of Geology |
| spelling | doaj.art-7bdbc5eede97475c8bb459bf05dfeade2022-12-22T02:42:26ZengSociedade Brasileira de GeologiaBrazilian Journal of Geology2317-469249210.1590/2317-4889201920180085S2317-48892019000200305Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometryYawar HussainMartin Cardenas-SotoRogerio UagodaSalvatore MartinoJuan Rodriguez-RebolledoOmar HamzaHernan Martinez-CarvajalAbstract The application of geophysical monitoring technologies may offer an opportunity to understand the dynamic of slopes in response to factors triggering their instability. In this study, Ambient Noise Interferometry was used as a monitoring approach on a man-made reduced-scale vertical slope and on a natural-scale landslide in Sobradinho (Brazil), under the influence of mechanical stress and rainfall, respectively. For both experiments, we adopted similar data acquisition system and processing workflow. After preprocessing of ambient seismic noise, the time-lapse changes were determined in terms of relative velocity changes using the moving window cross spectral technique. For the vertical slope, terrestrial laser scanning was also performed to detect crack or fissure generation. The prototype experiment results showed a decreasing trend of relative velocity changes and reached a minimum value of -0.6% at the end of the experiment. No change was detected on the digital elevation model that was computed from terrestrial laser scanning images, due to the absence of centimeter scale superficial fissures. At natural scale (Sobradinho landslide), no significant variation in relative velocity changes was detected for the rainy and non-rainy days, mainly because of the inadequate change in the degree of saturation, which was found within a relatively short period of data acquisition.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892019000200305&lng=en&tlng=enAmbient seismic noiserainfallclayey landslideterrestrial laser scanning |
| spellingShingle | Yawar Hussain Martin Cardenas-Soto Rogerio Uagoda Salvatore Martino Juan Rodriguez-Rebolledo Omar Hamza Hernan Martinez-Carvajal Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometry Brazilian Journal of Geology Ambient seismic noise rainfall clayey landslide terrestrial laser scanning |
| title | Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometry |
| title_full | Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometry |
| title_fullStr | Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometry |
| title_full_unstemmed | Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometry |
| title_short | Monitoring of Sobradinho landslide (Brasília, Brazil) and a prototype vertical slope by time-lapse interferometry |
| title_sort | monitoring of sobradinho landslide brasilia brazil and a prototype vertical slope by time lapse interferometry |
| topic | Ambient seismic noise rainfall clayey landslide terrestrial laser scanning |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892019000200305&lng=en&tlng=en |
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