Sources of Turbidity in Torres Strait Waters

This report gives details of laboratory analyses carried out by the Ocean Sciences Institute on behalf of the Maritime Systems Division, Defence Science and Technology Organisation. The terms of reference for the study were as follows: 1. To make grain size analyses by Malvern Laser Diffraction Particle Sizer on 6 water samples;2. To compare and contrast the clay mineralogy of filtered water samples with core samples from the Great North East Channel and Fly River mouth using combination of X-ray diffraction and energy dispersive x-ray analysis;3. To compile carbonate content data (measured in the mud size fraction) of surficial sediment samples from the Great North East Channel and central to northern Torres Strait; and4. To interpret the results derived, with respect to the source and nature of water turbidity in the Torres Strait area.

本报告详述了海洋科学研究所（Ocean Sciences Institute）受国防科学与技术组织海事系统分部委托开展的实验室分析工作。本研究的职权范围如下：1. 采用马尔文激光衍射粒度分析仪（Malvern Laser Diffraction Particle Sizer）对6份水样开展粒度分析；2. 结合X射线衍射（X-ray diffraction）与能量色散X射线分析（energy dispersive x-ray analysis）技术，对比过滤水样与大东北水道（Great North East Channel）、弗莱河河口（Fly River mouth）岩芯样品的黏土矿物组成；3. 整理大东北水道及托雷斯海峡（Torres Strait）中北部表层沉积物样品的碳酸盐含量数据（以泥级组分的测定值计）；4. 针对托雷斯海峡区域水体浊度的成因与特性，对所得分析结果进行解读。