Trial instrument of in situ auto-chemical analysis for the purpose of long term observation in the ocean.

本研究的目的是开发一种原位化学自动分析仪，以获得高精度的Mn数据，这对研究海底热液活动和冷渗流具有重要意义。首先，我们开发了一种高灵敏度的化学发光检测方法来分析Mn，然后构建了一个流动原位Mn分析仪GAMOS（地球化学异常监测系统）。在现场流量分析中，分别采用蠕动泵和隔膜泵两种泵系进行短期和长期运行。1997年7月至9月和1998年3月，分别在东太平洋隆起南部（D= 2600 m）和马里亚纳海槽南部（3200 m）进行了热液活跃点调查，并将GAMOS安装在新海6500 （JAMSTEC）潜水器和R/V Hakuho Maru的CTD-Carousel采样系统上。此外，我们还成功地获得了1998年9 - 10月Alvin号巡航期间Mn和温度(T)的详细数据。热液活动复杂的时空变化以Mn/T变化为特征。这些重复的GAMOS海上操作显著提高了其性能。在该项目的最后一年，GAMOS被安装到AUV“R-One”（工业科学研究所）上，在世界上首次建立了AUV原位分析系统。

The purpose of this study is to develop an in-situ chemical auto-analyzer for obtaining highly accurate Mn data, which will be essentially important to research submarine hydrothermal activity and cold seepage. At first we developed a highly sensitive chemiluminescence detection method for Mn analysis, then constructed a flow-through in situ Mn analyzer GAMOS (Geochemical Anomalies Monitoring System). For the in situ flow-through analysis, two pump systems, peristaltic pump and diaphragm pump, were employed for short term and long term operations, respectively. By attaching GAMOS to the submersible Shinkai 6500 (JAMSTEC) and a CTD-Carousel sampling system of R/V Hakuho Maru, hydrothermally active sites in the southern East Pacific Rise (D=2,600 m) and in the southern Mariana Trough (3,200 m) were surveyed in July to September, 1997, and in March, 1998, respectively. In addition, we successfully obtained detailed data of Mn and temperature (T) during the Alvin cruise in September to October, 1998. Complicated temporal and spatial variations of hydrothermal activity were characterized by Mn/T variations. These repetitive GAMOS operations at sea improved its performance significantly. In the last year of this project, GAMOS was installed to the AUV "R-One" (Institute of Industrial Science) to establish an AUV-in situ analyzer system for the first time in the world.