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

该奖项是根据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专注于描述在南极洲罗斯海仲夏至夏末浮游植物水华中观察到的高生产力斑块。 要测试和扩展的关键假设是，入侵的营养盐和微量营养盐（如铁）丰富的水质量的南极修改环极深水（CDW）到大陆架上的行为，以控制生态地球化学反应的大面积的生产罗斯海沿海地区。人们认为，这种生产力的提高可能是全球碳循环的一个重要因素。一个新的采样策略将用于测试上述假设，将采用远程控制的深（1000米）滑翔机（AUV）定位和映射CDW在近真实的时间测量C（电导率），T（温度），D（压力）和表观光学特性，这将有助于指导进一步的船基采样。极地研究船与自主式潜水器的适应性协调还提供了一个机会，就极地研究问题进行正式和非正式教育和公共宣传。

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.