...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geophysical Research Letters >The Aquitaine Shelf Edge (Bay of Biscay): A Primary Outlet for Microbial Methane Release
【24h】

The Aquitaine Shelf Edge (Bay of Biscay): A Primary Outlet for Microbial Methane Release

机译：Aquitaine Shelf Edge（Beishay湾）：微生物甲烷释放的主要出口

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A few thousand (2,612) seeps are releasing microbial methane bubbles from the seafloor at the Aquitaine Shelf edge (Bay of Biscay) at shallow water depths (140-220 m). This methane contributes to the formation of meter-scale subcircular carbonate structures, which are (sub)outcropping over 375 km(2). Based on in situ flow rate measurements and acoustic data, and assuming steady and continuous fluxes over time, the methane entering the water column is estimated at 144 Mg/yr. Microbial methane circulation has been ongoing for at least a few thousand years. This discovery highlights the importance of microbial methane generation, disconnected from deep thermogenic sources and gas hydrates, at continental shelves. The shelf edge may be viewed as a focus area for methane circulation and release and related diagenesis, all having an impact on the shaping of continental shelves and potentially on the oceanic and atmospheric carbon budget.
机译：几千（2,612）只渗漏是在浅水深度（140-220米）的Aquitaine货架边缘（Beascay湾）的海底上释放微生物甲烷气泡。 该甲烷有助于形成仪表级细菌碳酸盐结构，这些结构（亚）超过375 km（2）。 基于原位流速测量和声学数据，并假设随着时间的推移稳定和连续的通量，进入水柱的甲烷估计为144mg / yr。 微生物甲烷循环至少已有至少几千年。 该发现突出了在欧式架子上与深热来源和天然气水合物断开的微生物甲烷生成的重要性。 搁板边缘可以被视为甲烷循环和释放和相关成岩的焦点区域，所有性都对欧式架子的成形和潜在地影响了海洋和大气碳预算的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号