 |
| Titel |
Timescales for the development of methanogenesis and free gas layers in recently-deposited sediments of Arkona Basin (Baltic Sea) |
| VerfasserIn |
J. M. Mogollón, A. W. Dale, H. Fossing, P. Regnier |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1726-4170
|
| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 9, no. 5 ; Nr. 9, no. 5 (2012-05-30), S.1915-1933 |
| Datensatznummer |
250007037
|
| Publikation (Nr.) |
 copernicus.org/bg-9-1915-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| Arkona Basin (southwestern Baltic Sea) is a seasonally-hypoxic basin
characterized by the presence of free methane gas in its youngest
organic-rich muddy stratum. Through the use of reactive transport models,
this study tracks the development of the methane geochemistry in Arkona Basin
as this muddy sediment became deposited during the last 8 kyr. Four cores are
modeled each pertaining to a unique geochemical scenario according to their
respective contemporary geochemical profiles. Ultimately the thickness of the
muddy sediment and the flux of particulate organic carbon are crucial in
determining the advent of both methanogenesis and free methane gas, the
timescales over which methanogenesis takes over as a dominant reaction
pathway for organic matter degradation, and the timescales required for free
methane gas to form. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|