ub.xmlui.mirage2.page-structure.muninLogoub.xmlui.mirage2.page-structure.openResearchArchiveLogo
    • EnglishEnglish
    • norsknorsk
  • Velg spraakEnglish 
    • EnglishEnglish
    • norsknorsk
  • Administration/UB
View Item 
  •   Home
  • Universitetsbiblioteket
  • Artikler, rapporter og annet (UB)
  • View Item
  •   Home
  • Universitetsbiblioteket
  • Artikler, rapporter og annet (UB)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

The evolution of methane vents that pierce the hydrate stability zone in the world's oceans

Permanent link
https://hdl.handle.net/10037/26497
DOI
https://doi.org/10.1002/2013JB010686
Thumbnail
View/Open
article.pdf (1.584Mb)
Published version (PDF)
Date
2014-07-16
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Smith, Andrew James; Flemings, Peter B.; Liu, Xiaoli; Darnell, Kristopher
Abstract
We present a one-dimensional model that couples the thermodynamics of hydrate solidification with multiphase flow to illuminate how gas vents pierce the hydrate stability zone in the world's oceans. During the propagation phase, a free-gas/hydrate reaction front propagates toward the seafloor, elevating salinity and temperature to three-phase (gas, liquid, and hydrate) equilibrium. After the reaction front breaches the seafloor, the temperature gradient in the gas chimney dissipates to background values, and salinity increases to maintain three-phase equilibrium. Ultimately, a steady state is reached in which hydrate formation occurs just below the seabed at a rate necessary to replace salt loss. We show that at the Ursa vent in the Gulf of Mexico, the observed salinity and temperature gradients can be simulated as a steady state system with an upward flow of water equal to 9.5 mm yr−1 and a gas flux no less than 1.3 kg m−2 yr−1. Many of the world's gas vents may record this steady state behavior, which is characterized by elevated temperatures and high salinities near the seafloor.
Publisher
American Geophysical Union (AGU)
Citation
Smith AJ, Flemings PB, Liu, Darnell. The evolution of methane vents that pierce the hydrate stability zone in the world's oceans. Journal of Geophysical Research (JGR): Biogeosciences. 2014;119(8):6337-6356
Metadata
Show full item record
Collections
  • Artikler, rapporter og annet (UB) [3245]
Copyright 2014 AGU

Browse

Browse all of MuninCommunities & CollectionsAuthor listTitlesBy Issue DateBrowse this CollectionAuthor listTitlesBy Issue Date
Login

Statistics

View Usage Statistics
UiT

Munin is powered by DSpace

UiT The Arctic University of Norway
The University Library
uit.no/ub - munin@ub.uit.no

Accessibility statement (Norwegian only)