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

摘要：“本奖项是根据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夏季中下旬浮游植物大量繁殖中观察到的高生产力斑块。需要验证和扩展的关键假设是，南极修正环极深水（CDW）的营养物和微量营养物（如铁）水团侵入大陆架，控制了罗斯海沿岸大片地区的生物地球化学反应。据信，这种生产力的提高可能是全球碳循环的一个重要促成因素。一种新的采样策略将用于测试上述假设，该策略将使用远程控制的深海（1000米）滑翔机（AUV）来定位和绘制CDW，近实时测量C（电导率）、T（温度）、D（压力）和表观光学特性，并将用于指导进一步的船载采样。极地研究船与AUV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的教育和公众宣传。

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.