Application of persistent scatterers interferometry for landslide monitoring in the vicinity of Roznow Lake in Poland

Title:

Application of persistent scatterers interferometry for landslide monitoring in the vicinity of Roznow Lake in Poland

Creator:

Perski, Zbigniew, Andrzej Borkowski, Wojciechowski, Tomasz, and Wójcik, Antoni

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:88cf6b71-79dc-4808-9586-f7dc12cced25
uuid:88cf6b71-79dc-4808-9586-f7dc12cced25
issn:1214-9705

Subject:

Geologie. Meteorologie. Klimatologie, sesuvy půdy, interferometrie, landslides, interferometry, Karpaty (pohoří), Carpathian Mountains, Persistent Scatterer Interferometry, SAR interferometry, LIDAR, 7, and 551

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

The paper presents the preliminary results of the analysis of two archival SAR datasets acquired by ERS-1/2 satellites of the same area of Roznow Lake in Southern Poland. Both datasets cover the same period of 8 years (1992 - 2000) and refers to the same area by the 50% of overlap between the neighbouring satellite tracks. The main purpose of this analysis was to derive the overlapping data about deformation velocity calculated using PSI (Persistent Scatterers Interferometry). The presented PSI results refer to PS (Persistent Scatterers) located on active landslides and therefore representing landslide movement. In Polish Carpathians, due to sparse urbanization, vegetation and rough relief the obtained PS density is usually not very high and generally difficult to interpret. The application of two overlapping datasets, where both of them observe the same phenomena, allow to cross-validate the data by identification of common PS points. For two datasets acquired from different tracks, usually many PS are not common and occur at different locations. Such situation could be explained by the difference between the incidence angles for both acquisitions. In a case of two tracks and therefore different terrain objects might act as PS. By joining the PS point sets from such neighbouring tracks the density of PS could be significantly increased. In order to perform a PSI analysis of Roznow Lake the data acquired from 179 and 408 tracks have been used and a few hundred of PS were obtained from PSI processing. For both tracks similar deformations velocity were obtained within a range of +/- 6 mm/yr. The PS points on active landslides are usually related to the buildings (walls, roofs) and roads affected usually by high risk., Zbigniew Perski, Andrzej Borkowski, Tomasz Wojciechowski and Antoni Wójcik., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Acta geodynamica et geomaterialia : | 2011 Volume:8 | Number:3 (163)

Harvested from:

CDK

Metadata only:

false