Podrobnosti záznamu

Název
    Methane gas hydrate stability models on continental shelves in response to glacio-eustatic sea level variations: examples from Canadian oceanic margins
Autor
    Majorowicz, J.
    Osadetz, K.
    Šafanda, Jan
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Energies
Svazek/č.
    Roč. 6, č. 11
Strany
    s. 5775-5806
Rok
    2013
Poznámky
    Rozsah: 32 s.
Předmětová kategorie
    Canadian shelf
    climate change influence
    GH stability
    marine gas hydrates (GH)
Klíčové slovo
    Canadian
    Continental
    Examples
    Gas
    Glacio-eustatic
    Hydrate
    Level
    Margins
    Methane
    Models
    Oceanic
    Response
    Sea
    Shelves
    Stability
    Variations
Abstrakt (anglicky)
   We model numerically regions of the Canadian continental shelves during successive glacio-eustatic cycles to illustrate past, current and future marine gas hydrate (GH) stability and instability. These models indicated that the marine GH resource has dynamic features and the formation age and resource volumes depend on the dynamics of the ocean-atmosphere system as it responds to both natural (glacial-interglacial) and anthropogenic (climate change) forcing. Our models focus on the interval beginning three million years ago (i.e., Late Pliocene-Holocene). They continue through the current interglacial and they are projected to its anticipated natural end. During the current interglacial the gas hydrate stability zone (GHSZ) thickness in each region responded uniquely as a function of changes in water depth and sea bottom temperature influenced by ocean currents.
   In general, the GHSZ in the deeper parts of the Pacific and Atlantic margins (>= 1316 m) thinned primarily due to increased water bottom temperatures.
Přispěvatel
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
    U
Datum importu
    23. 10. 2014