Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves
We present a wave equation prestack depth migration to image crust and mantle structures using multi-component earthquake data recorded at dense seismograph arrays. Transmitted P and S waves recorded on the surface are back propagated using an elastic wave equation solver. The wave modes are separat...
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Geophysical Union (AGU)
2012
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| Online Access: | http://hdl.handle.net/1721.1/74214 https://orcid.org/0000-0003-1650-6818 |
| _version_ | 1826197358476525568 |
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| author | Shang, Xuefeng Hoop, Maarten V. de van der Hilst, Robert D |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Shang, Xuefeng Hoop, Maarten V. de van der Hilst, Robert D |
| author_sort | Shang, Xuefeng |
| collection | MIT |
| description | We present a wave equation prestack depth migration to image crust and mantle structures using multi-component earthquake data recorded at dense seismograph arrays. Transmitted P and S waves recorded on the surface are back propagated using an elastic wave equation solver. The wave modes are separated after the reverse-time continuation of the wavefield from the surface, and subjected to a (cross-correlation type) imaging condition forming an inverse scattering transform. Reverse time migration (RTM) does not make assumptions about the presence or properties of interfaces – notably, it does not assume that interfaces are (locally) horizontal. With synthetic experiments, and different background models, we show that passive source RTM can reconstruct dipping and vertically offset interfaces even in the presence of complex wave phenomena (such as caustics and point diffraction) and that its performance is superior to traditional receiver function analysis, e.g., common conversion point (CCP) stacking, in complex geological environments. |
| first_indexed | 2024-09-23T10:46:28Z |
| format | Article |
| id | mit-1721.1/74214 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:46:28Z |
| publishDate | 2012 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/742142024-05-15T02:20:15Z Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves Shang, Xuefeng Hoop, Maarten V. de van der Hilst, Robert D Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Shang, Xuefeng van der Hilst, Robert D. We present a wave equation prestack depth migration to image crust and mantle structures using multi-component earthquake data recorded at dense seismograph arrays. Transmitted P and S waves recorded on the surface are back propagated using an elastic wave equation solver. The wave modes are separated after the reverse-time continuation of the wavefield from the surface, and subjected to a (cross-correlation type) imaging condition forming an inverse scattering transform. Reverse time migration (RTM) does not make assumptions about the presence or properties of interfaces – notably, it does not assume that interfaces are (locally) horizontal. With synthetic experiments, and different background models, we show that passive source RTM can reconstruct dipping and vertically offset interfaces even in the presence of complex wave phenomena (such as caustics and point diffraction) and that its performance is superior to traditional receiver function analysis, e.g., common conversion point (CCP) stacking, in complex geological environments. 2012-10-23T16:59:24Z 2012-10-23T16:59:24Z 2012-08 2012-05 Article http://purl.org/eprint/type/JournalArticle 0094-8276 http://hdl.handle.net/1721.1/74214 Shang, Xuefeng, Maarten V. de Hoop, and Robert D. van der Hilst. “Beyond Receiver Functions: Passive Source Reverse Time Migration and Inverse Scattering of Converted Waves.” Geophysical Research Letters 39.15 (2012). ©2012 American Geophysical Union https://orcid.org/0000-0003-1650-6818 en_US http://dx.doi.org/ 10.1029/2012gl052289 Geophysical Research Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) MIT web domain |
| spellingShingle | Shang, Xuefeng Hoop, Maarten V. de van der Hilst, Robert D Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves |
| title | Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves |
| title_full | Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves |
| title_fullStr | Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves |
| title_full_unstemmed | Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves |
| title_short | Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves |
| title_sort | beyond receiver functions passive source reverse time migration and inverse scattering of converted waves |
| url | http://hdl.handle.net/1721.1/74214 https://orcid.org/0000-0003-1650-6818 |
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