MRI:RAPID: Gulf Oil Spill Instrument Acquisition for Fluorometric Detection of Underwater Oil and Soluble VOCs

PI要求核磁共振快速供资，以便在即将进行的海洋巡航期间购置一台用于测量地下石油的多光谱荧光特性的荧光分光计和一台用于测量地下羽流中挥发性有机碳的挥发性有机碳分析仪。这两种仪器对于正确校准和地面真实情况至关重要，其他用于研究漏油事件的荧光仪器也是如此。这些仪器的一个主要好处是能够近乎实时地对船上的石油性质和成分进行快速和详细的分析。此外，派？S要求配备一台专用的APEX剖面仪，配备UV荧光、颗粒后向散射和氧气传感器，以在巡航期间和巡航后自动监测地下羽流。本申请中的仪器将被部署在即将到来的一次快速资助的研究巡航中，以使用先进的激光荧光仪(ALF)研究光合作用生物的生物量、光合作用能力和种群组成，以研究漏油的潜在影响。他们将使用APEX浮标探测地下油羽，并使用LADCP研究水柱中的垂直和水平速度。荧光光谱和VOC测量对于快速、现场确认和校准来自本次巡航使用的其他设备的基于荧光的测量至关重要。这两个仪器的输出对于确定所发现的任何水下碳氢化合物的来源特征也至关重要。APEX彩车将在巡航后在墨西哥湾持续存在。在这次巡航中获得的激发/发射光谱将提供给在墨西哥湾工作的所有调查人员，以帮助他们解释结果。布罗德影响所要求的仪器将有助于调查有关漏油的一些最基本的问题？利用这些数据，皮？S将尝试估计次表层羽流的位置和强度，绘制近地表羽流的空间范围图，并了解次表层羽流对次表层氧浓度的影响。此外，这项工作将补充其他跨学科调查，包括目前在墨西哥湾开展的高分辨率建模工作，并为其提供信息。

The PI requests MRI RAPID funding to acquire a spectrofluorometer to measure the multi-spectral fluorescence properties of subsurface oil and a Volatile Organic Carbon Analyzer to measure VOCs in the subsurface plume during upcoming oceanographic cruises. Both instruments are essential for properly calibrating and ground truthing other fluorescence-based instruments used to research the oil spill. A key benefit of these instruments is the ability to provide rapid and detailed analyses of oil properties and composition on board ship in near real-time. In addition, the PI?s request a dedicated APEX profiler with UV fluorescence, particle backscattering, and oxygen sensors to monitor subsurface plumes autonomously during and after the cruises. The instruments in this request will be deployed in an upcoming RAPID funded research cruise to study the biomass, photosynthetic capacity and population composition of photosynthesizing organisms with regard to the potential effects of the oil spill using the Advanced Laser Fluorometer (ALF). They will detect subsurface plumes of oil using APEX floats and study vertical and horizontal velocities in the water column using LADCPs. The spectrofluorometric and VOC measurements will be essential for rapid, on-site confirmation and calibration of fluorescence-based measurements from the other equipment used on this cruise. The output from these two instruments will also be critical for identifying the source signature of any underwater hydrocarbons found. The APEX float will provide a continuous presence in the Gulf of Mexico following the cruise. The excitation/emission spectra obtained on this cruise will be made available to all the investigators working in the Gulf of Mexico to help them interpret their results.Broader ImpactsThe requested instruments will aid in investigating some of the most fundamental questions about the oil spill ? with this data the PI?s will try to estimate the location and magnitude of the subsurface plumes, to map the spatial extent of the near surface plume, and to understand the effect of the plume on subsurface oxygen concentrations. In addition, the work will complement and inform other interdisciplinary investigations including high-resolution modeling work currently being carried out in the Gulf.