@article{d9c1b5163b6d4254851633d035c91b31,
title = "Earthquake-enhanced dissolved carbon cycles in ultra-deep ocean sediments",
abstract = "Hadal trenches are unique geological and ecological systems located along subduction zones. Earthquake-triggered turbidites act as efficient transport pathways of organic carbon (OC), yet remineralization and transformation of OC in these systems are not comprehensively understood. Here we measure concentrations and stable- and radiocarbon isotope signatures of dissolved organic and inorganic carbon (DOC, DIC) in the subsurface sediment interstitial water along the Japan Trench axis collected during the IODP Expedition 386. We find accumulation and aging of DOC and DIC in the subsurface sediments, which we interpret as enhanced production of labile dissolved carbon owing to earthquake-triggered turbidites, which supports intensive microbial methanogenesis in the trench sediments. The residual dissolved carbon accumulates in deep subsurface sediments and may continue to fuel the deep biosphere. Tectonic events can therefore enhance carbon accumulation and stimulate carbon transformation in plate convergent trench systems, which may accelerate carbon export into the subduction zones.",
author = "Mengfan Chu and Rui Bao and Michael Strasser and Ken Ikehara and Jez Everest and Lena Maeda and Katharina Hochmuth and Li Xu and Ann McNichol and Piero Bellanova and Troy Rasbury and Martin K{\"o}lling and Natascha Riedinger and Joel Johnson and Min Luo and Christian M{\"a}rz and Susanne Straub and Kana Jitsuno and Morgane Brunet and Zhirong Cai and Antonio Cattaneo and Kanhsi Hsiung and Takashi Ishizawa and Takuya Itaki and Toshiya Kanamatsu and Myra Keep and Arata Kioka and Cecilia McHugh and Aaron Micallef and Dhananjai Pandey and Proust, {Jean No{\"e}l} and Yasufumi Satoguchi and Derek Sawyer and Chlo{\'e} Seibert and Maxwell Silver and Joonas Virtasalo and Yonghong Wang and Wu, {Ting Wei} and Sarah Zellers",
note = "Funding Information: This research used samples and data provided by the International Ocean Discovery Program (IODP) that are under moratorium until 30 November 2023. After the moratorium period, further data will be accessible online and more samples will be made available on request (www.iodp.org/access-data-and-samples). We thank staffs for assisting with sample preparation and measurement, and Nan Wang for comments on the figures. Expedition 386: Japan Trench Paleoseismology was jointly funded by the European Consortium for Ocean Research Drilling (ECORD), the U.S. Science Support Program, and the IODP, with contributions and logistical support from the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the funders. This research is funded by National Natural Science Foundation of China (92058207, 42076037 and 42242601, R.B.), Fundamental Research Funds for the Central Universities (202042010, R.B.), the National Key Programs for Fundamental Research and Development (2016YFA0600904, R.B.), Taishan Young Scholars (tsqn202103030, R.B.), and Shandong Natural Science Foundation (ZR2021JQ12, R.B.). Funding Information: This research used samples and data provided by the International Ocean Discovery Program (IODP) that are under moratorium until 30 November 2023. After the moratorium period, further data will be accessible online and more samples will be made available on request ( www.iodp.org/access-data-and-samples ). We thank staffs for assisting with sample preparation and measurement, and Nan Wang for comments on the figures. Expedition 386: Japan Trench Paleoseismology was jointly funded by the European Consortium for Ocean Research Drilling (ECORD), the U.S. Science Support Program, and the IODP, with contributions and logistical support from the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the funders. This research is funded by National Natural Science Foundation of China (92058207, 42076037 and 42242601, R.B.), Fundamental Research Funds for the Central Universities (202042010, R.B.), the National Key Programs for Fundamental Research and Development (2016YFA0600904, R.B.), Taishan Young Scholars (tsqn202103030, R.B.), and Shandong Natural Science Foundation (ZR2021JQ12, R.B.). Publisher Copyright: {\textcopyright} 2023, Springer Nature Limited.",
year = "2023",
month = dec,
doi = "10.1038/s41467-023-41116-w",
language = "English",
volume = "14",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group - Macmillan Publishers",
number = "1",
}