Land subsidence in Konya Closed Basin and its spatio-temporal detection by GPS and DInSAR

Ustun, Aydin; Tuşat, Ekrem; Yalvaç, Sefa; Özkan, İhsan; Eren, Yaşar; Özdemir, Adnan; Bildirici, İbrahim Öztuğ; Üstüntaş, Taner; Kirtiloğlu, Osman Sami; Mesutoğlu, Mehmet; Doğanalp, Serkan; Canaslan, Fatma; Abbak, Ramazan Alpay; Avsar, N. B.; Şimşek, F. Fehmi

doi:10.1007/s12665-014-3890-5

Cited by 39 publications

(9 citation statements)

References 15 publications

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“…The decomposed velocity field reveals that portions of Anatolia are experiencing rapid vertical motions. The clearest example is the large zone of subsidence with rates >50 mm/year surrounding the Konya Basin in south central Turkey (Figures 2a,3c,3e,S6,and S11), which is attributed to rapid aquifer compaction due to groundwater extraction (Caló et al, 2017;Üstün et al, 2015).…”

Section: East-west and Vertical Surface Velocities For Anatoliamentioning

confidence: 99%

High-resolution surface velocities and strain for Anatolia from Sentinel-1 InSAR and GNSS data

Weiss¹

2020

Preprint

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Measurements of present-day surface deformation are essential for the assessment of long-term seismic hazard. The European Space Agency's Sentinel-1 satellites enable global, high-resolution observation of crustal motion from Interferometric Synthetic Aperture Radar (InSAR). We have developed new automated InSAR processing systems that exploit the first ~5 years of Sentinel-1 data to measure surface motions for the ~800,000 km2 Anatolian region. Our new 3D velocity and strain rate fields illuminate deformation patterns dominated by westward motion of Anatolia relative to Eurasia, localized strain accumulation along the North and East Anatolian Faults, and rapid vertical signals associated with anthropogenic activities and to a lesser extent extension across the grabens of western Anatolia. We show that automatically processed Sentinel-1 InSAR can characterize details of the velocity and strain rate fields with high resolution and accuracy over large regions. These results are important for assessing the relationship between strain accumulation and release in earthquakes.

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Section: East-west and Vertical Surface Velocities For Anatoliamentioning

confidence: 99%

High-resolution surface velocities and strain for Anatolia from Sentinel-1 InSAR and GNSS data

Weiss¹

2020

Preprint

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“…Many studies have been carried out on the decrease in groundwater level in this region. See for detailed information; Üstün et al 2007;Üstün et al 2015;Özdemir, 2014;Orhan et al 2020;Orhan 2021. In Table 4, the average horizontal movement (resultant velocity) was found to be 18.24 mm/year in the northwest direction and 18.66 mm/year in the southwest direction.…”

Section: Gnss Stations Time Seriesmentioning

confidence: 91%

Monitoring of continuous GNSS stations at Central Anatolia region

Redhwan¹,

Erdoğan²

2021

Turkish Journal of Geosciences

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In this study, the linear behaviors in the North, East and Up directions of 30 CORS-TR stations in the Central Anatolian Region were obtained by the trend component analysis which is the time series component. The time series of the stations between 2017-2020 years were calculated in the Eurasia-fixed frame with the GAMIT/GLOBK software. As a result of the analysis, the average horizontal velocity of the stations in the east of the Central Anatolian Region is 17.59 mm/year in the northwest direction, and the average horizontal velocity of the stations in the west is 18.66 mm/year in the southwest direction. This movement shows the movement of the Anatolian plate in the southwest direction in terms of direction and velocity and is in agreement with other research results. In the linear changes in the up coordinates of the stations, the greatest linear change was detected at the KNY1 (-48.22 mm/year) station. It is thought that this change at station KNY1 is due to the decrease in groundwater level in this region (Konya Closed Basin). In addition, in the standard deviation (m0) values of the time series that obtained as a result of the analysis, linear changes were approximately the same for the north and east directions, and about 2-3 times larger for the up values compared to the north or east directions.

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“…In recent years, land subsidence and sinkhole activity have been detected and monitored using Interferometric Synthetic Aperture Radar (InSAR) observations [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. InSAR is a microwave remote sensing technique that provides information on spatial and temporal surface deformations using a phase difference between two SAR acquisitions in the line of sight (LOS) between the satellite and the surface.…”

Section: Introductionmentioning

confidence: 99%

Land Subsidence and Its Relations with Sinkhole Activity in Karapınar Region, Turkey: A Multi-Sensor InSAR Time Series Study

Orhan

Oliver-Cabrera

Wdowinski

et al. 2021

Sensors

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The Karapinar basin, located in the Central Anatolian part of Turkey, is subjected to land subsidence and sinkhole activity due to extensive groundwater withdrawal that began in the early 2000s. In this study, we use Interferometric Synthetic Aperture Radar (InSAR), Global Navigation Satellite System (GNSS), and groundwater level data to monitor and better understand the relations between groundwater extraction, land subsidence, and sinkhole formation in the Karapinar basin. The main observations used in the study are InSAR-derived subsidence velocity maps calculated from both Sentinel-1 (2014–2018) and COSMO-SkyMed (2016–2017) SAR data. Our analysis reveals broad areas of subsidence with rates exceeding 70 mm/yr. The InSAR-derived subsidence was compared with GNSS data acquired by a continuously operating GNSS station located in the study area, which show a similar rate of subsidence. The temporal characteristic of both InSAR and GNSS time series indicate a long-term subsidence signal superimposed by seasonal variability, which follows the overall groundwater level changes, with over 80% cross-correlation consistency. Our results also indicate that sinkhole activity is limited to slow subsidence areas, reflecting strong cohesion of near-surface rock layers that resist subsidence but yield to collapse in response to aquifer system deformation induced by groundwater extraction.

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Land subsidence in Konya Closed Basin and its spatio-temporal detection by GPS and DInSAR

Cited by 39 publications

References 15 publications

High-resolution surface velocities and strain for Anatolia from Sentinel-1 InSAR and GNSS data

High-resolution surface velocities and strain for Anatolia from Sentinel-1 InSAR and GNSS data

Monitoring of continuous GNSS stations at Central Anatolia region

Land Subsidence and Its Relations with Sinkhole Activity in Karapınar Region, Turkey: A Multi-Sensor InSAR Time Series Study

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