Outer Darwin Harbour Marine Survey 2015: Total sediment metabolism, mineral specific surface area, carbonate and element concentrations and C and N isotopes in seabed sediments.

This resource contains surface sediment data for Outer Darwin Harbour collected by Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Northern Territory Government (Department of Land Resource Management) during the period from 28 May and 23 June 2015 on the RV Solander (survey SOL6187/GA0351). This project was made possible through offset funds provided by INPEX-led Ichthys LNG Project to Northern Territory Government Department of Land Resource Management, and co-investment from Geoscience Australia and Australian Institute of Marine Science. The intent of this four year (2014-2018) program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps that underpin marine resource management decisions. The specific objectives of the survey were to:

1. Obtain high resolution geophysical (bathymetry) data for outer Darwin Harbour, including Shoal Bay;
2. Characterise substrates (acoustic backscatter properties, grainsize, sediment chemistry) for outer Darwin Harbour, including Shoal Bay; and
3. Collect tidal data for the survey area.

Data acquired during the survey included: multibeam sonar bathymetry and acoustic backscatter; physical samples of seabed sediments, underwater photography and video of grab sample locations and oceanographic information including tidal data and sound velocity profiles. These datasets comprise total sediment metabolism, mineral specific surface area and carbonate and element concetrations, and C and N isotopes of seabed sediments.

A detailed account of the survey is provided in: Siwabessy, P.J.W., Smit, N., Atkinson, I., Dando, N., Harries, S., Howard, F.J.F., Li, J., Nicholas, W.A., Potter, A., Radke, L.C., Tran, M., Williams, D. and Whiteway, T., 2015. Outer Darwin Harbour Marine Survey 2015: GA0351/SOL6187 Post-survey report. Record 2016/008. Geoscience Australia, Canberra. http://dx.doi.org/10.11636/Record.2016.008

本数据集涵盖澳大利亚地质调查局（Geoscience Australia, GA）、澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）以及北领地政府土地资源管理部于2015年5月28日至6月23日期间，在RV Solander号调查船上开展的SOL6187/GA0351航次中采集的外达尔文港表层沉积物数据。

本项目由INPEX牵头的伊契斯液化天然气（LNG）项目向北领地政府土地资源管理部提供抵消费资金支持，并得到澳大利亚地质调查局与澳大利亚海洋科学研究所的联合资助。该四年期项目（2014-2018年）旨在通过整理与采集基础数据，提升对达尔文港与拜诺港海域海洋环境的认知，所获数据可用于编制专题生境地图，为海洋资源管理决策提供支撑。

本次调查的具体目标如下：
1. 获取外达尔文港（含肖尔湾）的高分辨率地球物理（水深测量）数据；
2. 表征外达尔文港（含肖尔湾）的底质特征（声学背散射特性、粒度、沉积物化学组成）；
3. 采集调查区域的潮汐数据。

本次调查采集的数据包括：多波束测深声呐水深数据与声学背散射数据、海底沉积物物理样品、抓斗取样点位的水下摄影与视频资料，以及包括潮汐数据、声速剖面在内的海洋学信息。本数据集涵盖沉积物总代谢率、矿物比表面积、碳酸盐与元素浓度，以及海底沉积物的碳、氮同位素数据。

本次调查的详细说明参见：Siwabessy, P.J.W.、Smit, N.、Atkinson, I.、Dando, N.、Harries, S.、Howard, F.J.F.、Li, J.、Nicholas, W.A.、Potter, A.、Radke, L.C.、Tran, M.、Williams, D.与Whiteway, T.，2015年。《2015年外达尔文港海洋调查报告：GA0351/SOL6187》。记录编号2016/008。堪培拉：澳大利亚地质调查局。http://dx.doi.org/10.11636/Record.2016.008