Chlorophyll a, b, c and Pheaophytin a concentrations in seabed sediments - Caswell Sub-basin, Browse Basin Marine Survey (GA0345/GA0346/TAN1411)

Geoscience Australia (GA) conducted a marine survey (GA0345/GA0346/TAN1411) of the north-eastern Browse Basin (Caswell Sub-basin) between 9 October and 9 November 2014 to acquire seabed and shallow geological information to support an assessment of the CO2 storage potential of the basin. The survey, undertaken as part of the Department of Industry and Science's National CO2 Infrastructure Plan (NCIP), aimed to identify and characterise indicators of natural hydrocarbon or fluid seepage that may indicate compromised seal integrity in the region.
The survey was conducted in three legs aboard the New Zealand research vessel RV Tangaroa, and included scientists and technical staff from GA, the NZ National Institute of Water and Atmospheric Research Ltd. (NIWA) and Fugro Survey Pty Ltd. Shipboard data (survey ID GA0345) collected included multibeam sonar bathymetry and backscatter over 12 areas (A1, A2, A3, A4, A6b, A7, A8, B1, C1, C2b, F1, M1) totalling 455 km2 in water depths ranging from 90 - 430 m, and 611 km of sub-bottom profile lines. Seabed samples were collected from 48 stations and included 99 Smith-McIntyre grabs and 41 piston cores. An Autonomous Underwater Vehicle (AUV) (survey ID GA0346) collected higher-resolution multibeam sonar bathymetry and backscatter data, totalling 7.7 km2, along with 71 line km of side scan sonar, underwater camera and sub-bottom profile data. Twenty two Remotely Operated Vehicle (ROV) missions collected 31 hours of underwater video, 657 still images, eight grabs and one core.
This catalogue entry refers to chlorophyll a, b, c and phaeophytin a conentrations in the upper 2 cm of seabed sediments.

澳大利亚地球科学局（Geoscience Australia，GA）于2014年10月9日至11月9日期间，对布劳斯盆地东北部（卡斯维尔次盆）开展了海洋勘测（GA0345/GA0346/TAN1411），旨在获取海底与浅层地质数据，支撑该盆地二氧化碳封存潜力的评估工作。本次勘测作为澳大利亚工业与科学部国家二氧化碳基础设施计划（National CO2 Infrastructure Plan，NCIP）的组成部分，目标为识别并表征天然烃类或流体渗漏的标志，以判断该区域盖层完整性是否受损。
本次勘测依托新西兰研究船唐加罗瓦号（RV Tangaroa）分三个航段实施，参与单位包括澳大利亚地球科学局、新西兰国家水与大气研究所（National Institute of Water and Atmospheric Research Ltd.，NIWA）以及福格罗勘测私人有限公司（Fugro Survey Pty Ltd.）。
船载勘测数据（勘测编号GA0345）涵盖12个区域（A1、A2、A3、A4、A6b、A7、A8、B1、C1、C2b、F1、M1）的多波束测深与反向散射数据，总覆盖面积达455平方千米，对应水深范围为90至430米，同时采集了611千米的浅地层剖面测线数据。本次勘测共获取48个站位的海底样品，包含99个Smith-McIntyre采泥器样品与41个活塞岩心。
自主水下航行器（Autonomous Underwater Vehicle，AUV，勘测编号GA0346）采集了总面积7.7平方千米的高分辨率多波束测深与反向散射数据，同时获取了71千米侧扫声呐、水下摄像与浅地层剖面数据。22次遥控水下航行器（Remotely Operated Vehicle，ROV）任务累计采集了31小时水下视频、657张静态图像、8个采泥样品与1个岩心。
本目录条目涉及海底表层2厘米沉积物中的叶绿素a、b、c以及脱镁叶绿素a浓度数据。