Tracing Riverine Inputs and Ventilation Processes of the Upper Arctic by Means of Submarine Mounted on-line Chemical Sensors

提案编号：9622603 作者：Falkner，Kelly 摘要 关于北冰洋环流的未决问题包括其河流输入物的命运及其内部地下沃茨通风过程的性质。 由于北极在全球热盐循环中可能发挥关键作用，而且由于需要预测污染物，包括放射性废物和工业废物及农药在这一敏感环境中的归宿，因此需要更全面地描述北极的循环和物质迁移和转化。 建议开发和应用新的手段来解决这些问题，方法是采用海底平台真实的实时绘制地球化学示踪剂场的方法，并结合使用潜艇浮出水面时从冰中进行的更常规的化学水文测量。 具体来说，一个海上光纤紫外光谱仪，将安装在潜艇的船体。 该仪器将在SCICEX-96现场季节（1996年8月）期间连续监测溶解有机物沿着轨迹的腐殖部分，并在SCICEX-97现场季节期间监测多个参数。 此外，还将通过冰基水模型从冰中采集离散样本，用于校准目的，并继续进行相关研究，以通过地球化学手段跟踪北极河流沃茨。 该数据集将允许对北极的碳循环和循环问题进行前所未有的检查。

Proposal Number: OPP 9622603 Principal Investigator: Falkner, Kelly ABSTRACT Among the outstanding issues regarding Arctic Ocean circulation are the fate of its riverine inputs and the nature of the processes ventilating sub-surface waters of its interior. Circulation and material transport and transformation in the Arctic needs to be more completely characterized because of the potentially critical role the Arctic plays in global themohaline circulation and on a more immediate timescale, because of the need to predict the fate of pollutants, including radioactive and industrial wastes and pesticides, in this sensitive environment. It is proposed to develop and apply new means to address these issues by adapting methodologies for mapping geochemical tracer fields in real time using the submarine platform, in combination with more conventional chemical hydrography conducted from the ice upon surfacing with the sub. Specifically, a sea-going fiber optic UV spectrometer, will be mounted on the hull of the submarine. This instrument will continuously monitor the humic fraction of dissolved organic matter along track during the SCICEX-96 field season (August 1996) and monitor multiple parameters during the SCICEX-97 field season. In addition discreet samples will be taken via ice-based hydrocasts from the ice for calibration purposes and continuation of a related study to track Arctic river waters by geochemical means. This dataset will allow an unprecedented examination of the carbon cycle and circulation questions in the Arctic.