{
  "abstract": "Microbial anaerobic oxidation of methane (AOM) regulates the flux of methane (CH4) released from anoxic marine sediments into the ocean. However, variations in AOM rates, especially at dynamic environments such as cold seeps, are difficult to constrain, hindering robust projections of marine CH4 flux in a changing climate. Here, we quantify AOM rates at global marine cold seeps based on isotope bonding in methane-derived authigenic carbonates. We show through model simulations that 13C-18O bond abundance in these carbonates quantitatively records AOM rates at marine cold seeps and validate this proxy using compiled datasets of seep carbonate isotope compositions and independent AOM rate measurements. Accordingly, we estimate a mean AOM rate of 6.33.910.6 mol·m−2·yr−1 and a consumption of 2.11.33.5 Tg·yr−1 CH4 at modern global cold seeps, but potentially 1.70.93.1 times as high an AOM rate and CH4 sink over the last ~100 kyr. Our results highlight the important role of cold seeps in the global marine CH4 cycle despite their relatively minuscule footprint.",
  "abstract_shown": true,
  "affiliations": [
    "The Massachusetts Institute of Technology-Woods Hole Oceanographic Institution Joint Program in Oceanography/Applied Ocean Science and Engineering, Woods Hole, MA 02543",
    "Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Scott T. Wieman",
      "orcid": "0000-0002-6415-5293"
    },
    {
      "affs": [
        1
      ],
      "name": "Weifu Guo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9w1msm37y6rk6.bib",
  "cited_by": 0,
  "doi": "10.1073/pnas.2533639123",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13732241/",
  "id": "9w1msm37y6rk6",
  "issns": [
    "0027-8424",
    "1091-6490"
  ],
  "landing_url": "https://doi.org/10.1073/pnas.2533639123",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "413"
    ],
    [
      "heading",
      "Earth, Atmospheric, and Planetary Sciences"
    ],
    [
      "heading",
      "Physical Sciences"
    ],
    [
      "openalex",
      "2304|Methane Hydrates and Related Phenomena"
    ]
  ],
  "openalex": "W7223707554",
  "pdf_url": null,
  "pmcid": "PMC13732241",
  "pmid": "42932641",
  "published": "2026-10-26",
  "publisher": "National Academy of Sciences",
  "ris": "https://research.draconitic.com/paper/9w1msm37y6rk6.ris",
  "sources": [
    {
      "first_seen": "2026-11-08T12:22:16Z",
      "native_id": "PMC13732241",
      "source": "pmc",
      "url": "https://doi.org/10.1073/pnas.2533639123"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2304|Methane Hydrates and Related Phenomena",
      "subfield": "environmental"
    }
  ],
  "title": "Global high rates of anaerobic methane oxidation at marine cold seeps recorded by isotope bonding in seep carbonates",
  "title_text": "Global high rates of anaerobic methane oxidation at marine cold seeps recorded by isotope bonding in seep carbonates",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:22:16Z",
  "url": "https://research.draconitic.com/paper/9w1msm37y6rk6",
  "venue": "Proceedings of the National Academy of Sciences of the United States of America",
  "versions": []
}