...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >On the effect of climate trends in coastal density on deep water renewal frequency in sill fjords-A statistical approach
【24h】

On the effect of climate trends in coastal density on deep water renewal frequency in sill fjords-A statistical approach

机译：论沿海密度的气候趋势对山峡湾深水更新频率的影响 - 一种统计方法

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

The basin water of a sill fjord is renewed intermittently, when the density of the water at sill level in the ocean outside the fjord is high enough for it to sink down to the bottom of the fjord. How often the basin water is renewed, the renewal frequency, depends on how fast diffusion and mixing cause the density in the basin to decrease and on the variability of the density in the ambient ocean. Here, we suggest a statistical approach to investigate how a trend - e.g. imposed by global warming - in the ambient ocean density will affect the renewal frequency of a sill fjord. Negative ambient trends that are large compared to the rate at which density decreases the fjord will have large impact on the renewal frequency. It is shown that the observed negative trend in the annual maximum density at a hydrographical station near the Norwegian fjord Masfjorden, is very likely to have reduced the renewal frequency and increased the length of the stagnation period compared to pre-trend conditions. Negative trends in the annual maximum density since 1990 are observed at six out of eight longterm hydrographical stations along the Atlantic Norwegian coast, suggesting that the deep water renewal frequency in many Norwegian fjords has been reduced during the last 30 years.
机译：窗台峡湾的盆地间歇性地繁殖，当峡湾外海洋的水平的水平密度足够高，以便下沉到峡湾的底部。盆地水的次数多久更新，更新频率取决于快速扩散和混合导致盆中的密度降低和环境海洋密度的可变性。在这里，我们建议调查趋势的统计方法 - 例如，全球变暖施加 - 在环境海洋密度将影响窗台峡湾的更新频率。与密度降低的速率相比，负面的环境趋势与峡湾的速度相比，对续龄频率的影响很大。结果表明，挪威峡湾美法附近的水文局的年度最大密度观察到的负面趋势非常可能降低更新频率并与趋势前的条件相比增加了停滞期的长度。自1990年以来的八个长期挪威海岸的八个长期水文站中的六个六个人中占年度最大密度的负趋势，这表明许多挪威峡湾的深水更新频率在过去30年中已经减少。

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