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

通过安装在潜艇上的在线化学传感器追踪北极上部的河流输入和通风过程

• 批准号: 9622603
• 负责人: Kelly Falkner
• 金额: $ 29.59万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-05-15 至 1999-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9622603&HistoricalAwards=false
• 关键词: Tracing; Riverine; Inputs; Ventilation; Processes

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.

提案编号：OPP 9622603 首席研究员：Falkner, Kelly 摘要 关于北冰洋环流的突出问题包括其河流输入的命运以及其内部地下水域通风过程的性质。 由于北极在全球热盐循环中发挥着潜在的关键作用，因此需要更全面地描述北极的循环、物质运输和转化，并且需要在更直接的时间尺度上预测污染物（包括放射性和工业废物和农药）在这个敏感环境中的命运。 建议开发和应用新的方法来解决这些问题，方法是采用海底平台实时绘制地球化学示踪剂场的方法，并结合潜艇浮出水面时从冰上进行的更传统的化学水文学。 具体来说，一个远海光纤紫外光谱仪将安装在潜艇的船体上。 该仪器将在 SCICEX-96 野外季节（1996 年 8 月）期间连续监测沿轨道溶解有机物的腐殖质部分，并在 SCICEX-97 野外季节期间监测多个参数。 此外，还将通过冰基水力铸造从冰中采集谨慎的样本，用于校准目的，并继续进行相关研究，以通过地球化学手段追踪北极河流水域。 该数据集将对北极的碳循环和循环问题进行前所未有的检查。