1 / 5

PERGAMON WG-A

PERGAMON WG-A Methane formation, transport and accumulation (free gas and gas hydrate) in terrestrial and marine sediments and permafrost. Activities since the last meeting:

nayef
Download Presentation

PERGAMON WG-A

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PERGAMON WG-A Methane formation, transport and accumulation (free gas and gas hydrate) in terrestrial and marine sediments and permafrost. Activities since the last meeting: MASOX seabed observatory deployed at the site of methane plumes (flares) on the western margin of Svalbard as part of ESONET. Giuliana Panieri - Work on benthic foraminifera as proxy for local marine methane emissions: application to the Arctic Ocean, using cores from the James Clark Ross cruise in 2008. Poster at this meeting.

  2. To be done at this meeting Formulate a scheme for collaborative work and promotion of scientific interest in methane originating from: Arctic terrestrial sources Arctic terrestrial permafrost Arctic marine areas underlain by permafrost Arctic marine areas that are not underlain by permafrost

  3. Initial Tasks Identify current research of relevance Identify future research that is already planned and funded Identify the most important topics for collaboration within and between the the working groups of Pergamon and more generally Identify means for collaboration

  4. Establish how widespread are hydrate and shallow gas in Arctic continental margins, particularly the vulnerable zone of the hydrate stability zone, where it tapers out near the top of the continental slope. • Identify BSRs in seismic sections. These are more likely to be visible in the down-slope finer grained, more uniform sediments than in the upper-slope glacigenic sediment sequence. • Use seismic velocity and electrical conductivity to provide better evidence the existence and for the amount of hydrate, where there is indirect evidence to indicate its presence. • Identify features commonly associated with hydrate occurrence such pockmarks and mounds using multibeam and side-scan sonar. • Use high-frequency seismic systems to identify shallow gas. • Detect gas flares in water column with ‘fish-finder’ and multibeam sonar. • Measure methane, sulphate, chloride, sulphide and DIC in cores.

  5. Marine Permafrost How much methane comes from input from rivers and shallow organic-rich sediments in comparison with methane from dissociating hydrate in and beneath the permafrost? More needs to be discovered about the ways in which methane from hydrate beneath the permafrost comes through the permafrost. What processes cause the permafrost to be melted through, locally, in some places? In the formerly glaciated western Siberian shelf, with no permafrost, there appear to be as many seeps as in the eastern Siberian shelf, underlain by permafrost.Is it equally productive in methane?

More Related