Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary Zone
A Bottom Simulating Reflector (BSR) is a seismic feature closely related to marine gas hydrate as it is usually regarded as the seismic response of the base of the gas hydrate stability zone in seismic profiles. BSRs are widely distributed in the Makran accretionary wedge, and double BSRs are observ...
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2025-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/13/1/68 |
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| author | Jiangxin Chen Wenyu Zhao Siyou Tong Leonardo Azevedo Nengyou Wu Bin Liu Huaning Xu Jianming Gong Jing Liao Jie Liang Dongxu Luo Yu Fu |
| author_facet | Jiangxin Chen Wenyu Zhao Siyou Tong Leonardo Azevedo Nengyou Wu Bin Liu Huaning Xu Jianming Gong Jing Liao Jie Liang Dongxu Luo Yu Fu |
| author_sort | Jiangxin Chen |
| collection | DOAJ |
| description | A Bottom Simulating Reflector (BSR) is a seismic feature closely related to marine gas hydrate as it is usually regarded as the seismic response of the base of the gas hydrate stability zone in seismic profiles. BSRs are widely distributed in the Makran accretionary wedge, and double BSRs are observed at some locations. Double BSRs usually appear on seismic profiles as two layers of BSRs located at distinct depths but with large lateral seismic amplitude variations. Based on the multi-channel seismic reflection data acquired over the Makran accretionary wedge, this work studies the origin of the double BSR in the Makran accretionary wedge and its association with fluid escape events. Our modeling suggests that double BSRs correspond to both the paleo-seafloor and modern seafloor caused by late sedimentary activities. Also, the residual paleo-BSR migrates upward due to the increase in local geothermal gradient caused by diapirs and gas chimney thermal fluids. |
| format | Article |
| id | doaj-art-2eaf3f89086a4bc4aebaa7bca02d9560 |
| institution | Kabale University |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-2eaf3f89086a4bc4aebaa7bca02d95602025-01-24T13:36:45ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-01-011316810.3390/jmse13010068Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary ZoneJiangxin Chen0Wenyu Zhao1Siyou Tong2Leonardo Azevedo3Nengyou Wu4Bin Liu5Huaning Xu6Jianming Gong7Jing Liao8Jie Liang9Dongxu Luo10Yu Fu11Key Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266237, ChinaKey Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, ChinaLaboratory for Marine Mineral Resources, Qingdao Marine Science and Technology Center, Qingdao 266237, ChinaInstituto Superior Técnico, Lisbon University, 1049-001 Lisbon, PortugalLaoshan Laboratory, Qingdao 266237, ChinaKey Laboratory of Marine Mineral Resources, Ministry of Natural Resources, Guangzhou Marine Geological Survey, Guangzhou 510760, ChinaKey Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266237, ChinaKey Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266237, ChinaKey Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266237, ChinaKey Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266237, ChinaFaculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, ChinaKey Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, ChinaA Bottom Simulating Reflector (BSR) is a seismic feature closely related to marine gas hydrate as it is usually regarded as the seismic response of the base of the gas hydrate stability zone in seismic profiles. BSRs are widely distributed in the Makran accretionary wedge, and double BSRs are observed at some locations. Double BSRs usually appear on seismic profiles as two layers of BSRs located at distinct depths but with large lateral seismic amplitude variations. Based on the multi-channel seismic reflection data acquired over the Makran accretionary wedge, this work studies the origin of the double BSR in the Makran accretionary wedge and its association with fluid escape events. Our modeling suggests that double BSRs correspond to both the paleo-seafloor and modern seafloor caused by late sedimentary activities. Also, the residual paleo-BSR migrates upward due to the increase in local geothermal gradient caused by diapirs and gas chimney thermal fluids.https://www.mdpi.com/2077-1312/13/1/68Makrangas hydratebottom simulating reflectorfluid flowformation mechanism |
| spellingShingle | Jiangxin Chen Wenyu Zhao Siyou Tong Leonardo Azevedo Nengyou Wu Bin Liu Huaning Xu Jianming Gong Jing Liao Jie Liang Dongxu Luo Yu Fu Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary Zone Journal of Marine Science and Engineering Makran gas hydrate bottom simulating reflector fluid flow formation mechanism |
| title | Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary Zone |
| title_full | Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary Zone |
| title_fullStr | Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary Zone |
| title_full_unstemmed | Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary Zone |
| title_short | Study on the Occurrence of Double Bottom Simulating Reflectors in the Makran Accretionary Zone |
| title_sort | study on the occurrence of double bottom simulating reflectors in the makran accretionary zone |
| topic | Makran gas hydrate bottom simulating reflector fluid flow formation mechanism |
| url | https://www.mdpi.com/2077-1312/13/1/68 |
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