Limits...
Analysis of building deformation in landslide area using multisensor PSInSAR ™ technique

View Article: PubMed Central - PubMed

ABSTRACT

We analyze ground deformation velocities of the buildings in San Fratello (Sicily, Italy).

We analyze satellite PSI data using different sensors, acquired from 1992 to 2012.

We performed a damages assessment map after the landslide occurred on the 14th February 2010.

The obtained data were compared to evaluate the residual risk.

The obtained data were compared to evaluate the residual risk.

No MeSH data available.


(a) CSK ground deformation velocity map; (b) building deformation velocity map obtained by using CSK data; (c) time series correspondent to the orange asterisk and (d) time series correspondent to the yellow asterisk.
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC5384476&req=5

fig0055: (a) CSK ground deformation velocity map; (b) building deformation velocity map obtained by using CSK data; (c) time series correspondent to the orange asterisk and (d) time series correspondent to the yellow asterisk.

Mentions: Considering the interesting results highlighted by X-band sensors, the TSX and CSK datasets were reprocessed, choosing a different reference point, in order to minimize the standard deviations. The new reference points were located inside San Fratello, in correspondence of buildings considered stable. This procedure allowed a more accurate measurement of building deformations velocities. During the reprocessing of the CSK data, several PS, located in the western part of the town were lost, but the building deformation velocity map clearly shows that Stazzone and San Benedetto quarters are affected by important deformations (Fig. 11). In addition the reprocessed TSX data (Fig. 12) confirmed that these two areas are subjected to ground deformations, especially San Benedetto where the extent, the geometry of the deformations and the average velocities are comparable to the CSK data. TSX data can be useful also to observe the deformations located along the western slope, where several buildings show high velocities.


Analysis of building deformation in landslide area using multisensor PSInSAR ™ technique
(a) CSK ground deformation velocity map; (b) building deformation velocity map obtained by using CSK data; (c) time series correspondent to the orange asterisk and (d) time series correspondent to the yellow asterisk.
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5384476&req=5

fig0055: (a) CSK ground deformation velocity map; (b) building deformation velocity map obtained by using CSK data; (c) time series correspondent to the orange asterisk and (d) time series correspondent to the yellow asterisk.
Mentions: Considering the interesting results highlighted by X-band sensors, the TSX and CSK datasets were reprocessed, choosing a different reference point, in order to minimize the standard deviations. The new reference points were located inside San Fratello, in correspondence of buildings considered stable. This procedure allowed a more accurate measurement of building deformations velocities. During the reprocessing of the CSK data, several PS, located in the western part of the town were lost, but the building deformation velocity map clearly shows that Stazzone and San Benedetto quarters are affected by important deformations (Fig. 11). In addition the reprocessed TSX data (Fig. 12) confirmed that these two areas are subjected to ground deformations, especially San Benedetto where the extent, the geometry of the deformations and the average velocities are comparable to the CSK data. TSX data can be useful also to observe the deformations located along the western slope, where several buildings show high velocities.

View Article: PubMed Central - PubMed

ABSTRACT

We analyze ground deformation velocities of the buildings in San Fratello (Sicily, Italy).

We analyze satellite PSI data using different sensors, acquired from 1992 to 2012.

We performed a damages assessment map after the landslide occurred on the 14th February 2010.

The obtained data were compared to evaluate the residual risk.

The obtained data were compared to evaluate the residual risk.

No MeSH data available.