摘要
关于沟弧盆构造体系下的海底热液活动，因涉及的问题繁多，一直是海洋地质学界十分注目的重要研究课题。相比之下，西太平洋沟弧盆体系的马里亚纳海槽和西南太平洋的汤加－斐济海盆中的劳海盆都有ＤＳＤＰ／ＯＤＰ的支撑，有关海底热液活动及其构造属性、地壳类型、形成时代等已有了十分明确的结论，唯冲绳海槽至今尚未有此机会。为了迎接１９９８年大洋钻探船来西太平洋海域，特建议在冲绳海槽设站钻探，可在地理座标２７°１５′～２７°３５′Ｎ，１２６°５６′～１２７°１０′Ｅ的范围、水深１３００～１５５０ｍ水域内海底热液活动活跃区选站，连续钻探４～５孔，其目的拟解决以下４个问题：１．冲绳海槽现代海底热液活动通道在岩层中的最大透过深度及其岩石学性质；２．冲绳海槽的热液类型和成岩成矿作用；３．热液活动与地壳性质；４．热液活动在沟弧盆体系演化中的意义。
In this paper, the air in a marine science research vessel 'No.9 Xiang Yang Hong' was monitored for airborne microbe content. The results obtained show: The average total counts of airborne microbes, airborne fungi and airborne fungi count/total count of airborne microbes % in the cabins were 3730.9 CFU·m -3 ,168.1CFU·m -3 and 15.3×10 -2 ,respectively. The total count of airborne microbes has not exceeded the Chinese national standards of environmental hygiene stipulated for passenger ships yet, except about 21×10 -2 of the data obtained. The differences between the two sets of the result of monitoring were caused mainly by disturbance of the air. The differences in the contents of airborne microbe in the air over different decks and cabins suggest that it was due to the environmental changes caused by the health state of the personnel, their work and life habits, etc. The results also indicate that there are great potentialities for improving the hygienic conditions of the environment of the upper cabins with better condition or even those of all the cabins in the vessel.
出处
《黄渤海海洋》
CSCD
1997年第2期47-52,共6页
Journal of Oceanography of Huanghai & Bohai Seas
关键词
冲绳海槽
热液活动
大洋钻探
海底地热
No.9 Xiang yang Hong' marine science research vessel Airborne microbes Environmental quality
