Collaborate Research:Modified Circumpolar Deep Water Intrusions as an Iron Source to the Summer Ross Sea Ecosystem

摘要“这个奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。”一个跨学科的研究小组将重点描述在南极洲罗斯海的仲夏到夏末浮游植物水华中观察到的高生产力斑块。有待检验和推广的关键假设是，南极改良环极深水(CDW)富含营养物质和微量营养物质(如Fe)的水团向上侵入大陆架，控制了罗斯海沿岸生产力丰富的大片地区的生物地球化学反应。人们认为，这种生产率的提高可能是全球碳循环的一个重要贡献因素。一种新的采样策略将用于验证上述假设，它将使用远程控制的深(1000米)滑翔机(AUV)来近实时地定位和绘制CDW，并测量C(电导率)、T(温度)、D(压力)和表观光学性质，这将用于指导进一步的舰载采样。极地考察船与自动潜航器的适应性协调还提供了就极地研究中的问题进行正式和非正式教育和公众宣传的机会。

Abstract"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."An interdisciplinary team of researchers will focus on describing the high productivity patchiness observed in phytoplankton blooms in the mid to late summer in the Ross Sea, Antarctica. Key hypotheses to be tested and extended are that intrusions of nutrient and micro nutrient (e.g. Fe) rich water masses of the Antarctic modified circumpolar deep water (CDW) up onto continental shelves act to control the biogeochemical response of a large area of the productive Ross Sea coastal region. It is believed that this enhanced productivity may be a significant contributing factor to the global carbon cycle. A novel sampling strategy to be used to test the above hypotheses will employ a remotely controlled deep (1000m) glider (AUV) to locate and map CDW in near real time measuring C (conductivity), T (temperature), D (pressure) and apparent optical properties, and which will serve to direct further ship-based sampling. The adaptive coordination of a polar research vessel with an AUV additionally provides an opportunity to engage in formal and informal education and public outreach on issues in polar research.