GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    facet.materialart.
    Unbekannt
    Shallow gas migration along hydrocarbon wells – An unconsidered, anthropogenic source of biogenic methane in the North Sea (2017)
    ACS (American Chemical Society)
    In:  Environmental Science & Technology, 51 (17). pp. 10262-10268.
    Details
    Publikationsdatum: 2020-02-06
    Beschreibung: Shallow gas migration along hydrocarbon wells constitutes a potential methane emission pathway that currently is not recognized in any regulatory framework or greenhouse gas inventory. Recently, the first methane emission measurements at three abandoned offshore wells in the Central North Sea (CNS) were conducted showing that considerable amounts of biogenic methane originating from shallow gas accumulations in the overburden of deep reservoirs were released by the boreholes. Here, we identify numerous wells poking through shallow gas pockets in 3D seismic data of the CNS indicating that about one third of the wells may leak, potentially releasing a total of 3-17 kt of methane per year into the North Sea. This poses a significant contribution to the North Sea methane budget. A large fraction of this gas (~42 %) may reach the atmosphere via direct bubble transport (0-2 kt yr-1) and via diffusive exchange of methane dissolving in the surface mixed layer (1-5 kt yr-1), as indicated by numerical modeling. In the North Sea and in other hydrocarbon-prolific provinces of the world shallow gas pockets are frequently observed in the sedimentary overburden and aggregate leakages along the numerous wells drilled in those areas may be significant.
    Materialart: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
    Format: text
    DOI: 10.1021/acs.est.7b02732
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 2
    facet.materialart.
    Unbekannt
    Remotely Operated Vehicle “ROV KIEL 6000“ (2017)
    Forschungszentrum Jülich GmbH
    In:  Journal of Large-Scale Research Facilities JLSRF, 3 (A117).
    Details
    Publikationsdatum: 2017-09-06
    Beschreibung: The remotely operated vehicle ROV KIEL 6000 is a deep diving platform rated for water depths of 6000 meters. It is linked to a surface vessel via an umbilical cable transmitting power (copper wires) and data (3 single-mode glass fibers). As standard it comes equipped with still and video cameras and two different manipulators providing eyes and hands in the deep. Besides this a set of other tools may be added depending on the mission tasks, ranging from simple manipulative tools such as chisels and shovels to electrically connected instruments which can send in-situ data to the ship through the ROVs network, allowing immediate decisions upon manipulation or sampling strategies.
    Materialart: Article , NonPeerReviewed
    Format: text
    DOI: 10.17815/jlsrf-3-160
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - nicht begutachtet
  • 3
    facet.materialart.
    Unbekannt
    Gas seeps and methane in the water column at the Makran accretionary wedge (1999)
    Forschungszentrum Jülich GmbH
    In:  [Paper] In: Statusseminar Meeresforschung mit FS Sonne 1999, 10.-12.03.1999, Freiberg, Germany . Meeresforschung mit FS Sonne ; pp. 229-230 .
    Details
    Publikationsdatum: 2020-05-28
    Materialart: Conference or Workshop Item , PeerReviewed
    Format: text
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in Konferenzband
  • 4
    facet.materialart.
    Unbekannt
    Autonomous Underwater Vehicle „ABYSS“ (2016)
    Forschungszentrum Jülich GmbH
    In:  Journal of Large-Scale Research Facilities JLSRF, 2 (A79).
    Details
    Publikationsdatum: 2019-09-23
    Beschreibung: The Autonomous Underwater Vehicle (AUV) „ABYSS“ is a modular AUV designed to survey the ocean combining geophysical studies of the seafloor with oceanographic investigations of the overlying water column. The basic mission of ABYSS is deep-sea exploration, specifically in volcanically and tectonically active parts, such as mid-ocean ridges. With a maximum mission depth of 6000 meters, the AUV uses several technologies to map the seafloor accurately and determine its geological structure with applications from geology to biology to mineral exploration.
    Materialart: Article , NonPeerReviewed
    Format: text
    DOI: 10.17815/jlsrf-2-149
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - nicht begutachtet
  • 5
    facet.materialart.
    Unbekannt
    Remotely Operated Vehicle “ROV PHOCA“ (2017)
    Forschungszentrum Jülich GmbH
    In:  Journal of Large-Scale Research Facilities JLSRF, 3 (A118).
    Details
    Publikationsdatum: 2018-04-27
    Beschreibung: The remotely operated vehicle ROV PHOCA is a deep diving platform rated for water depths of 3000 meters. The ROV is linked to a surface vessel via an umbilical cable transmitting power (copper wires) and data (3 single-mode glass fibers). As standard it comes equipped with still and video cameras and two different manipulators providing eyes and hands in the deep. Special emphasis was put on the compatibility of numerous systems with the existing ROV KIEL 6000 to facilitate the use of both systems on various research vessels with a given team of ROV pilots. Besides this, a set of other tools may be added depending on the mission tasks, ranging from simple manipulative tools as chisels and shovels to electrically connected instruments which can send insitu data to the ship through the ROVs network, allowing immediate decisions upon manipulation or sampling strategies.
    Materialart: Article , NonPeerReviewed
    Format: text
    DOI: 10.17815/jlsrf-3-162
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - nicht begutachtet
  • 6
    facet.materialart.
    Unbekannt
    Simulating and Quantifying Multiple Natural Subsea CO2 Seeps at Panarea Island (Aeolian Islands, Italy) as a Proxy for Potential Leakage from Subseabed Carbon Storage Sites (2019)
    ACS (American Chemical Society)
    In:  Environmental Science & Technology, 53 (17). pp. 10258-10268.
    Details
    Publikationsdatum: 2022-01-31
    Beschreibung: Carbon dioxide (CO2) capture and storage (CCS) has been discussed as a potentially significant mitigation option for the ongoing climate warming. Natural CO2 release sites serve as natural laboratories to study subsea CO2 leakage in order to identify suitable analytical methods and numerical models to develop best-practice procedures for the monitoring of subseabed storage sites. We present a new model of bubble (plume) dynamics, advection-dispersion of dissolved CO2, and carbonate chemistry. The focus is on a medium-sized CO2 release from 294 identified small point sources around Panarea Island (South-East Tyrrhenian Sea, Aeolian Islands, Italy) in water depths of about 40–50 m. This study evaluates how multiple CO2 seep sites generate a temporally variable plume of dissolved CO2. The model also allows the overall flow rate of CO2 to be estimated based on field measurements of pH. Simulations indicate a release of ∼6900 t y–1 of CO2 for the investigated area and highlight an important role of seeps located at 〉20 m water depth in the carbon budget of the Panarea offshore gas release system. This new transport-reaction model provides a framework for understanding potential future leaks from CO2 storage sites.
    Materialart: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
    Format: text
    DOI: 10.1021/acs.est.9b02131
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...