Monitoring of continuous GNSS stations at Central Anatolia region

Year 2021, Volume: 2 Issue: 2, 21 - 29, 15.12.2021

Abdulmalek Redhwan Hediye Erdoğan Osman Oktar Cemil Gezgin

https://doi.org/10.48053/turkgeo.996719

Cited By: 1

Abstract

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.

Keywords

Trend Component Analysis., Central Anatolia Region, GNSS, ITRF, Time Series Analysis

References

• Aktuğ, B. (2006). Determination of earthquake source parameters through geodetic observations (PhD thesis). Istanbul Technical University, Istanbul, Turkey (in Turkish).
• Cingöz, A., Erkan, Y., Kurt, Y.A., & Peker, S. (2013). Turkey national fixed gnss network-active (TUSAGA-Active) system. TMMOB Chamber of Surveying and Cadastre Engineers, 14. Turkey Map Scientific and Technical Congress, Ankara.
• Gezgin, C., Tiryakioğlu, İ., Ekercin, S., & Gürbüz, E. (2020). Monitoring of tectonic movements of the southern section of the Tuz Gölü fault zone (TGFZ) with GNSS observations. Afyon Kocatepe University Journal of Science and Engineering, 20(3), 456-464.
• Güçlü, A.T. (2021). Definition of behavior of GNSS stations in Kırıkkale and surrounding (MSc thesis). Aksaray University, Aksaray, Turkey (in Turkish).
• Gülal, E., Aykut, N.O., Akpınar, B., Tiryakioğlu, İ., Dindar, A.A., & Erdoğan, H. (2013). Establishment of Yildiz Technical University fixed GNSS station, analysis and presentation of data, 14. Turkey Map Scientific Technical Congress, Ankara.
• Mutlu, İ., & Kahveci, M. (2019). The importance of GNSS satellite distribution in Real-Time Kinematics GNSS and Network-RTK measurements. Geomatics, 4(3), 179-189.
• Oktar, O. (2015). Identification of behavior of stationary GNSS stations with wavelet transform (MSc thesis). Aksaray University, Aksaray, Turkey (in Turkish).
• Oktar, O., & Erdogan, H. (2018). Research of behaviours of continuous GNSS stations by signal. Earth Sciences Research Journal, 22(1), 19-27.
• Orhan, O., Yakar, M., & Ekercin, S. (2020). An application on sinkhole susceptibility mapping by integrating remote sensing and geographic information systems. Arabian Journal of Geosciences, 13,17, 1-17.
• Orhan, O. (2021). Monitoring of land subsidence due to excessive groundwater extraction using small baseline subset technique in Konya, Turkey. Environmental Monitoring and Assessment, 193(4), 1-17.
• Orhan, O., Oliver-Cabrera, T., Wdowinski, S., Yalvac, S., & Yakar, M. (2021). Land subsidence and its relations with sinkhole activity in Karapınar region, Turkey: a multi-sensor InSAR time series study. Sensors, 21(3), 774.
• Ostini, L. (2012). Analysis and quality assessment of GNSS-derived parameter time series (PhD thesis). Bern University, Bern, Switzerland.
• Özdemir, S. (2014). Analysis of GNSS time series obtained from Turkish national permanent GNSS stations network-active system using Hilbert-Huang transform (MSc thesis). Middle East Technical University, Ankra Turkey.
• Özdemir, S., Cingöz, A., Aktuğ, B., Lenk, O., Kurt, M., & Parmaksız, E. (2011). Analysis of fixed station data. TMMOB Chamber of Surveying and Cadastre Engineers 13th Turkish Scientific and Technical Mapping Congress, 18-22.
• Özdoğan, S. (1993). Turkey's earthquake zones. Journal of Turkish Geography Research and Application Center, 2, 53-68.
• Şentürk, M.D. (2019). Optimal filtering of strong motion records with GPS (MSc thesis). Ankara University, Ankara, Turkey (in Turkish). Tiryakioğlu, İ. (2012). identification of the block movements and stress zones in southwestern anatolia with GNSS measurements (PhD thesis). Yıldız Technical University, İstanbul, Turkey (in Turkish).
• Uzel, T., Eren, K., Gulal, E., Tiryakioglu, I., Dindar, A. A., & Yilmaz, H. (2013). Monitoring the tectonic plate movements in Turkey based on the national continuous GNSS network. Arabian Journal of Geosciences, 6(9), 3573-3580.
• Üstün, A., Tuşat, E., & Abbak, R.A. (2007). Groundwater withdrawal in Konya Closed Basin and geodetic monitoring of possible consequences. 3. Engineering Symposium, 24-26.
• Üstün, A., Tuşat, E., Yalvaç, S., Özkan, İ., Eren, Y., Özdemir, A., & Doğanalp, S. (2015). Land subsidence in Konya Closed Basin and its spatio-temporal detection by GPS and DInSAR. Environmental earth sciences, 73,10, 6691-6703.
• Yalvaç, S. (2020). Determining the effects of the 2020 Elazığ-Sivrice/Turkey (Mw 6.7) earthquake from the surrounding CORS-TR GNSS stations. Turkish Journal of Geosciences, 1(1), 15-21.
• Yavaşoğlu, H., Tarı, E., Tüysüz, O., Çakır, Z., & Ergintav, S. (2011). Determining and modeling tectonic movements along the central part of the North Anatolian Fault (Turkey) using geodetic measurements. Journal of Geodynamics, 51,5, 339-343.
• Url-1: http://geoweb.mit.edu/gg/GAMIT_Ref.pdf, (last accessed 10 July 2020)
• Url-2: http://tusaga.Aktif.gov.tr/Sayfalar/ Rinex/ 30 sn Rinex.aspx, (last accessed 4 July 2020)