Rapid Response Research: Accessing New Sea Ice in an Arctic Winter Polynya

快速响应研究：获取北极冬季冰间湖中的新海冰

• 批准号: 1205152
• 负责人: Jody Deming
• 金额: $ 3.57万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1205152&HistoricalAwards=false
• 关键词: Rapid; Response; Research; Accessing; New

Recent years have seen the loss of massive amounts of multi-year sea ice from the Arctic Ocean and its replacement by first year sea ice. As first year ice freezes, a crystalline structure known as frost flowers forms on its surface. Frost flowers are delicate structures, high in brine content, and susceptible to wind-driven dispersion unless rapidly buried by snow. Funds are provided to contribute to a test of the hypothesis that frost flowers are a suitable habitat for microbes and viruses, advecting them upward with brine and concentrating them in the frost flowers as these form. Previous research has included laboratory studies of frost flower formation and isolated field sampling of these structures. This effort will allow the principal investigator access to a polynya for a period of time sufficient to sample and study the temporal evolution of frost flowers and their associated microbial communities.This award will bring microbial expertise and a US presence to an international collaboration in Greenland. Results of this project will be incorporated immediately into a college course on Arctic Change. While in Greenland, the international team will engage in outreach to local communities. The results of this research will shed light on potential mechanisms for the air-sea exchange and subsequent aeolian transport of microbes and viruses.

近年来，北冰洋失去了大量多年海冰，取而代之的是第一年的海冰。 当第一年的冰冻结时，一种被称为霜花的晶体结构在其表面形成。 霜花结构精巧，含盐量高，除非被雪迅速掩埋，否则易受风的影响而分散。 提供资金，以有助于测试的假设，霜花是一个合适的栖息地的微生物和病毒，平流他们向上与盐水和集中在霜花，因为这些形式。 以前的研究包括实验室研究霜花的形成和隔离这些结构的实地采样。 这一努力将使首席研究员能够进入冰间湖一段时间，足以对霜花及其相关微生物群落的时间演变进行采样和研究。该奖项将为格陵兰岛的国际合作带来微生物专业知识和美国的存在。 该项目的成果将立即纳入关于北极变化的大学课程。 在格陵兰期间，国际小组将与当地社区开展外联活动。 这项研究的结果将揭示潜在的海气交换机制和随后的微生物和病毒的风沙运输。