{
    "tag": 19144,
    "title": "Porewater dissolved organic carbon and associated geochemical data for methane seeps in the Cascadia Margin: Astoria Canyon, Barkley Canyon, Hydrate Ridge, and Bullseye Vent",
    "pubdate": "20250521",
    "sername": null,
    "series_name": null,
    "issue": "DOI:10.26008\/1912\/bco-dmo.959765.1",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/whcmsc\/approved_repository\/bco-dmo_959765_1\/Lalk_meta_DiscreteGeochemicalData_CascadiaMarginSeeps.faq.html",
    "format": null,
    "email": null,
    "descript": "These data include vertical profiles of concentrations and stable carbon isotope values of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), total organic carbon (TOC) from sediment cores collected at methane seeps and reference sites. Sediment porosity and dissolved sulfate and methane concentrations are also presented. Methane seeps in Astoria Canyon, Barkley Canyon, Hydrate Ridge, and Bullseye Vent, along the Cascadia Margin, were sampled. These data were collected over two decades and across four cruises: PGC02-08 (CCGS John P. Tully, 2002), Hydrates 2004 Sea Trial (CCGS John P. Tully, 2004), AT50-14 (R\/V Atlantis, 2023),  and AT50-29B (R\/V Atlantis, 2024).",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Lalk, Ellen",
            "role": "Author"
        },
        {
            "name": "Pohlman, John W.",
            "role": "Author"
        },
        {
            "name": "Lapham, Laura L.",
            "role": "Author"
        },
        {
            "name": "Casso, Michael A.",
            "role": "Author"
        },
        {
            "name": "Glenna, Madeline",
            "role": "Author"
        },
        {
            "name": "Hildebrand, Anna",
            "role": "Author"
        },
        {
            "name": "Lloyd, Karen",
            "role": "Author"
        },
        {
            "name": "Ma, Kun",
            "role": "Author"
        },
        {
            "name": "Seewald, Jeffrey",
            "role": "Author"
        },
        {
            "name": "Stock, Lennart",
            "role": "Author"
        },
        {
            "name": "Strauss, Maureen A.",
            "role": "Author"
        },
        {
            "name": "Sylva, Sean",
            "role": "Author"
        },
        {
            "name": "Traver, Lily",
            "role": "Author"
        },
        {
            "name": "Wilson, Rachel",
            "role": "Author"
        },
        {
            "name": "Williams, Leketha",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "141",
            "name": "carbon cycling",
            "scope": "The circulation of carbon in the biosphere, atmosphere, and hydrosphere through a series of processes that include photosynthesis, consumption, and respiration."
        },
        {
            "thcode": 2,
            "code": "142",
            "name": "carbon isotope analysis",
            "scope": "Experimental determination of the proportion of a given stable carbon isotope (C12 or C13) in a sample."
        },
        {
            "thcode": 2,
            "code": "2000",
            "name": "dissolved organic compounds",
            "scope": "Organic compounds present in water, typically as anthropogenic contaminants including pharmaceuticals, pesticides, and herbicides."
        },
        {
            "thcode": 2,
            "code": "1773",
            "name": "interagency programs",
            "scope": "Ongoing organizational activities in which USGS works directly with other government agencies"
        },
        {
            "thcode": 15,
            "code": "008",
            "name": "geoscientificInformation",
            "scope": "Information pertaining to earth sciences, for example geophysical features and processes, geology, minerals, sciences dealing with the composition, structure and origin of the earth's rocks, risks of earthquakes, volcanic activity, landslides, gravity information, soils, permafrost, hydrogeology, groundwater, erosion"
        }
    ],
    "place_term": [],
    "image": [],
    "fan": []
}