Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake
Sentinel-1's continuous observation program over all major plate boundary regions makes it well suited for earthquake studies. However, decorrelation due to large displacement gradients and limited azimuth resolution of the Terrain Observation by Progressive Scan (TOPS) data challenge acquiring...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Online Access: | https://hdl.handle.net/10356/83056 http://hdl.handle.net/10220/42417 |
| _version_ | 1826114238732566528 |
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| author | Jiang, Houjun Feng, Guangcai Wang, Teng Bürgmann, Roland |
| author2 | Earth Observatory of Singapore |
| author_facet | Earth Observatory of Singapore Jiang, Houjun Feng, Guangcai Wang, Teng Bürgmann, Roland |
| author_sort | Jiang, Houjun |
| collection | NTU |
| description | Sentinel-1's continuous observation program over all major plate boundary regions makes it well suited for earthquake studies. However, decorrelation due to large displacement gradients and limited azimuth resolution of the Terrain Observation by Progressive Scan (TOPS) data challenge acquiring measurements in the near field of many earthquake ruptures and prevent measurements of displacements in the along-track direction. Here we propose to fully exploit the coherent and incoherent information of TOPS data by using standard interferometric synthetic aperture radar (InSAR), split-bandwidth interferometry in range and azimuth, swath/burst-overlap interferometry, and amplitude cross correlation to map displacements in both the line-of-sight and the along-track directions. Application to the 2016 Kumamoto earthquake sequence reveals the coseismic displacements from the far field to the near field. By adding near-field constraints, the derived slip model reveals more shallow slip than obtained when only using far-field data from InSAR, highlighting the importance of exploiting all coherent and incoherent information in TOPS data. |
| first_indexed | 2024-10-01T03:35:55Z |
| format | Journal Article |
| id | ntu-10356/83056 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:35:55Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/830562020-09-26T21:27:11Z Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake Jiang, Houjun Feng, Guangcai Wang, Teng Bürgmann, Roland Earth Observatory of Singapore SAR InSAR Sentinel-1's continuous observation program over all major plate boundary regions makes it well suited for earthquake studies. However, decorrelation due to large displacement gradients and limited azimuth resolution of the Terrain Observation by Progressive Scan (TOPS) data challenge acquiring measurements in the near field of many earthquake ruptures and prevent measurements of displacements in the along-track direction. Here we propose to fully exploit the coherent and incoherent information of TOPS data by using standard interferometric synthetic aperture radar (InSAR), split-bandwidth interferometry in range and azimuth, swath/burst-overlap interferometry, and amplitude cross correlation to map displacements in both the line-of-sight and the along-track directions. Application to the 2016 Kumamoto earthquake sequence reveals the coseismic displacements from the far field to the near field. By adding near-field constraints, the derived slip model reveals more shallow slip than obtained when only using far-field data from InSAR, highlighting the importance of exploiting all coherent and incoherent information in TOPS data. Published version 2017-05-15T05:15:34Z 2019-12-06T15:10:59Z 2017-05-15T05:15:34Z 2019-12-06T15:10:59Z 2017 2017 Journal Article Jiang, H., Feng, G., Wang, T., & Bürgmann, R. (2017). Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake. Geophysical Research Letters, 44(4), 1758-1767. 0094-8276 https://hdl.handle.net/10356/83056 http://hdl.handle.net/10220/42417 10.1002/2016GL072253 200056 en Geophysical Research Letters © 2017 American Geophysical Union. This paper was published in Geophysical Research Letters and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The published version is available at: [http://dx.doi.org/10.1002/2016GL072253]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 10 p. application/pdf |
| spellingShingle | SAR InSAR Jiang, Houjun Feng, Guangcai Wang, Teng Bürgmann, Roland Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake |
| title | Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake |
| title_full | Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake |
| title_fullStr | Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake |
| title_full_unstemmed | Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake |
| title_short | Toward full exploitation of coherent and incoherent information in Sentinel-1 TOPS data for retrieving surface displacement: Application to the 2016 Kumamoto (Japan) earthquake |
| title_sort | toward full exploitation of coherent and incoherent information in sentinel 1 tops data for retrieving surface displacement application to the 2016 kumamoto japan earthquake |
| topic | SAR InSAR |
| url | https://hdl.handle.net/10356/83056 http://hdl.handle.net/10220/42417 |
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