In situ voltammetry integrated with a cabled nearshore observatory

PI的请求资金，以进一步发展现场伏安法广泛集成到有线观测网络。在这项建议中，重点放在仪器的改进，最终量化的可溶性组分在表层沉积物，这是众所周知的显着有助于近岸系统的地球化学循环的运输。PI建议建立在原位电化学分析仪的最新发展基础上，这些分析仪大大减少了采样伪影，提高了测量灵敏度，减少了样品化学形态的诱导变化，从而提供了更好的测量准确度和精度。基洛纳鲁近岸珊瑚礁观测站提供了一个理想的框架，使伏安法和电缆海洋观测站的整合所需的必要的进步：（1）近岸渗透沉积物系统是最近公众和学术界强烈兴趣的焦点;（2）现有的观测系统与电力和高带宽通信已经存在;（3）奥陶纪南部海岸存在多种可预测的表面波条件，这些条件影响沉积物-水界面地球化学的伏安法可测量特征。更广泛的影响：在基洛纳鲁天文台框架内成功地整合了最先进的现场分析仪器和开创性的信息和计算机科学技术，可以作为开发其他化学传感器并将其纳入更大的海洋观测网络的模板。PI参与夏威夷大学-NASA天体生物学研究所的教育和推广计划应有助于将他们的发现传播给更广泛的受众。该项目包括与商业企业的合作，并将部分支持UH硕士学位学生的论文工作。

The PI's request funding to further develop in situ voltammetry for widespread integration into cabled observatory networks. In this proposal, emphasis is placed on instrument improvement for ultimate quantification of the transport of soluble components in surface sediments, which are known to significantly contribute to biogeochemical cycling in nearshore systems. The PIs propose to build upon recent developments of in situ electrochemical analyzers that have drastically reduced sampling artifacts, increasing measurement sensitivity and decreasing induced changes in sample chemical speciation, thus providing better accuracy and precision of measurement. Kilo Nalu Nearshore Reef Observatory provides an ideal framework to make necessary advancements required for integration of voltammetry and cabled ocean observatories: (1) nearshore permeable sediment systems are a focus of intensive recent public and academic interest; (2) an existing observing system with power and high bandwidth communications is already present; (3) Oahu's south shore is host to a wide and predictable variety of surface wave conditions that impact voltammetrically-measurable characteristics of the sediment-water interface geochemistry. Broader Impacts:The successful integration of state-of-the-art in situ analytical instrumentation and pioneering information and computer science technology, within the Kilo Nalu Observatory framework, could serve as a template for development and integration of other chemical sensors into larger ocean observing networks. The PIs' participation in the University of Hawaii-NASA Astrobiology Institute's education and outreach programs should serve to disseminate their findings to an even broader audience. The project includes collaboration with a commercial enterprise and will partially support thesis work for a UH master's degree student.