Decaying Post-Seismic Deformation Observed on the Korean Peninsula Following the 2011 Tohoku-Oki Earthquake
Abstract
:1. Introduction
2. Data and Methodology
2.1. GNSS Data
2.2. Methodology
3. Results
3.1. Changes in Average Velocity Vector
3.2. Co-Seismic Displacement with Epicentral Distance
3.3. Variation of Velocity Magnitude with Epicentral Distance
3.4. Variation of Velocity Direction with Epicentral Distance
3.5. Post-Seismic Deformation
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Stage | Pre-Seismic Deformation | Co-seismic Deformation 1 | Post-Seismic Stage 1 | Post-Seismic Stage 2 | Post-Seismic Stage 3 |
---|---|---|---|---|---|
Period | 1 January 2005 – 31 December 2010 | 4 March 2011 – 18 March 2011 | 12 March 2011 – 31 December 2013 | 1 January 2014 – 31 December 2016 | 1 January 2017 – 31 December 2019 |
Average magnitude (mm/year) | 29.9 ± 1.3 | 23.2 ± 5.3 | 36.4 ± 1.6 | 32.4 ± 1.1 | 31.1 ± 0.9 |
Average direction (degree) | 119.0 ± 1.4 | 84.4 ± 4.0 | 106.1 ± 1.8 | 110.7 ± 1.7 | 114.7 ± 1.7 |
Crustal Area | Thin Area (‘A’) | Thick Area (‘B’) | ||
---|---|---|---|---|
Stage | Avg. Direction | Diff. Direction | Avg. Direction | Diff. Direction |
Pre-seismic (‘R’) | 120.2 | 0.0 | 117.8 | 0.0 |
Co-seismic | 88.9 | −31.3 | 82.3 | −35.5 |
Post-seismic 1 | 107.1 | −13.1 | 106.0 | −11.8 |
Post-seismic 2 | 111.7 | −8.5 | 111.2 | −6.6 |
Post-seismic 3 | 115.4 | −4.8 | 114.7 | −3.1 |
Crustal Area | Thin Area (‘A’) | Thick Area (‘B’) |
---|---|---|
Average relaxation completeness (%) | 85.3 ± 13.1 | 92.7 ± 7.0 |
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Sohn, D.-H.; Choi, B.-K.; Kim, S.; Park, S.-C.; Lee, W.-J.; Park, P.-H. Decaying Post-Seismic Deformation Observed on the Korean Peninsula Following the 2011 Tohoku-Oki Earthquake. Sensors 2021, 21, 4493. https://doi.org/10.3390/s21134493
Sohn D-H, Choi B-K, Kim S, Park S-C, Lee W-J, Park P-H. Decaying Post-Seismic Deformation Observed on the Korean Peninsula Following the 2011 Tohoku-Oki Earthquake. Sensors. 2021; 21(13):4493. https://doi.org/10.3390/s21134493
Chicago/Turabian StyleSohn, Dong-Hyo, Byung-Kyu Choi, Sungshil Kim, Sun-Cheon Park, Won-Jin Lee, and Pil-Ho Park. 2021. "Decaying Post-Seismic Deformation Observed on the Korean Peninsula Following the 2011 Tohoku-Oki Earthquake" Sensors 21, no. 13: 4493. https://doi.org/10.3390/s21134493