Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification
Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification
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DOI：
10.1029/2011gl047222
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发表时间：
2011-04-16
影响因子：
5.2
通讯作者：
Wallmann, K.
中科院分区：
文献类型：
--
作者：
Biastoch, A.;Treude, T.;Wallmann, K.
大量的甲烷水合物可能储存在沿着大陆边缘的沉积物中，因为它们在低温-高压条件下具有稳定性。全球变暖可能会破坏这些水合物的稳定性，并导致甲烷（CH 4）释放到水柱中，甚至可能释放到大气中。由于北极已经并将大幅变暖，因此分析了气候模型预测的北极底层水温及其未来演变。由此产生的变暖在空间上是不均匀的，对受大西洋流入影响的浅水区的影响最大。在接下来的100年里，全球变暖将影响25%的含有甲烷水合物的浅水和中深水区域。这些地区融化的水合物释放出的甲烷可能会加剧海洋酸化和水柱中的氧气消耗。然而，在所考虑的时间跨度内，甲烷排放对全球变暖的影响不会很大。引文：Biastoch，A.，等人（2011年），北冰洋温度上升导致天然气水合物不稳定和海洋酸化，地球物理学。保留信函：38，L08602，doi：10.1029/2011GL047222。
Vast amounts of methane hydrates are potentially stored in sediments along the continental margins, owing their stability to low temperature - high pressure conditions. Global warming could destabilize these hydrates and cause a release of methane (CH4) into the water column and possibly the atmosphere. Since the Arctic has and will be warmed considerably, Arctic bottom water temperatures and their future evolution projected by a climate model were analyzed. The resulting warming is spatially inhomogeneous, with the strongest impact on shallow regions affected by Atlantic inflow. Within the next 100 years, the warming affects 25% of shallow and mid-depth regions containing methane hydrates. Release of methane from melting hydrates in these areas could enhance ocean acidification and oxygen depletion in the water column. The impact of methane release on global warming, however, would not be significant within the considered time span. Citation: Biastoch, A., et al. (2011), Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification, Geophys. Res. Lett., 38, L08602, doi: 10.1029/2011GL047222.