Dissolved methane concentrations of water samples from the North Sea during ALKOR cruise AL575 (27 June 2022 - 13 July 2022)

Description: Water sampling was conducted during AL575 cruise in the North Sea by using Niskin Bottles attached to CTD/Water sampler rosette and ROV (Haeckel and Schmidt, 2024). To detect methane anomalies in the water column derived from seafloor gas emissions the recovered water samples were processed by using headspace gas sampling and subsequent gas chromatographic analysis. Based on measured methane concentrations of headspace gas in (micro-atm) the dissolved methane concentrations in water were calculated (nmol l-1).

Global identifier:

Doi(
    "10.1594/PANGAEA.979903",
)

Measurements(
    Measurements {
        domain: Unspecified,
        station: None,
        measured_variables: [
            "Event label",
            "Sample code/label",
            "DATE/TIME",
            "LONGITUDE",
            "LATITUDE",
            "DEPTH, water",
            "Methane, partial pressure",
            "Methane",
        ],
        methods: [
            "Headspace gas chromatography",
            "Headspace gas chromatography",
        ],
    },
)

Dataset

Origins: /Wissenschaft/PANGAEA

Tags: Methangehalt ? Geografische Koordinaten ? Methan ? Gewässergrund ? Wasserprobe ? Wasser ? Nordsee ? gas emission ? headspace gas chromatography ?

Region: North Sea

Bounding boxes: 0.245891° .. 6.97196° x 54.16586° .. 58.135838°

License: cc-by/4.0

Language: Englisch/English

Organisations

• Federal Ministry of Education and Research (Geldgeber*in) [1]
• GEOMAR - Helmholtz Centre for Ocean Research Kiel (Leitung) [1]
• GEOMAR - Helmholtz Centre for Ocean Research Kiel (Mitwirkende) [1]
• PANGAEA (Herausgeber*in)

Persons

• Mark Schmidt (Beitragende*r) [1] [ORCID]
• Matthias Haeckel (Beitragende*r) [1] [ORCID]

Issued: 2025-03-28

Modified: 2025-04-01

Time ranges: 2022-06-30 - 2022-07-11

Resources

• https://doi.pangaea.de/10.1594/PANGAEA.979903?format=textfile (TSV)

Status

Aktiv

Quality score

• Overall: 0.85
• Findability: 0.72

  • Title: 0.62
  • Description: 0.42
  • Identifier: true
  • Keywords: 0.78
  • Spatial: BoundingBox (0.50)
  • Temporal: true
• Accessibility: 0.67

  • Landing page: Specific (1.00)
  • Direct access: true
  • Publicly accessible: false
• Interoperability: 1.00

  • Open file format: true
  • Media type: true
  • Machine-readable metadata: true
  • Machine-readable data: true
• Reusability: 1.00

  • License: ClearlySpecifiedAndFree (1.00)
  • Contact info: true
  • Publisher info: true

Accessed 1 times.