遇见数据集

Geomorphometry of the Australian Marine Parks

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Research Data Australia2024-12-14 收录
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This dataset provides geomorphic features of the Australian Marine Parks (2022). The data was generated by Seamap Australia as part of an Our Marine Parks (Parks Australia) project with funding from the Australian Government to improve knowledge relating to classification of the Australian Marine Parks real estate.Bathymetry data was collated from existing AusSeabed data holdings and compiled into multi-resolution bathymetry mosaics for each Park (see https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/fb451be4-9de1-4bc2-8fd6-0f285f90916f). All publicly available bathymetry data as at 30th June 2022 was included. Macquarie Island was updated on 25/08/2023 to reflect the new AMP boundaries.The Whitebox tools package in R was used to calculate geomorphometry using the geomorphron function. Processing for each Park was addressed manually, with search distances and slope thresholds adjusted between Parks depending on quality and resolution of bathymetry data, and characteristics of the seafloor. Geomorphons were classified into geomorphic features using the Dove et al (2020) Seabed Morphology Features Glossary. These geomorphic units provide a consistent way to classify the seabed and may be used in combination with visual validation methods to develop benthic habitat maps.Data is supplied as a Web Map Service of geomorphic features overlaid on hillshade for the mapped regions. Data is available for download as a zipped package of geotiffs with accompanying hillshade. ESRI .lyr file and QGIS .sld files are supplied for display in desktop GIS.All Parks with 25% or more bathymetry coverage were included in processing.The table below indicates the Parks included in this data package, and the percent coverage of geomorphic data for each, based on the bathymetry coverage available at the time of processing. Note that the current coverage of bathymetry may be greater than that expressed below and contained within this data package, for areas in which more recent surveys have been published.PARK % COVERAGEAbrolhos 36%Apollo 52%Beagle 35%Boags 31%Bremer 70%Carnarvon Canyon 72%Central Eastern* 47% (41%)Christmas Island* 31% (28%)Cod Grounds 97%Coral Sea* 100% (30%)East Gippsland 96%Eastern Recherche 29%Flinders 30%Franklin 51%Freycinet 40%Gascoyne 53%Geographe 25%Gifford 100%Great Australian Bight 36%Heard & McDonald Islands*† 100% (0%)Hunter 90%Huon 94%Jervis 99%Macquarie Island 40%Mermaid Reef 72%Murray 47%Nelson 58%Ningaloo 54%Norfolk 38%Perth Canyon 98%Solitary Islands 34%South Tasman Rise 59%South-west Corner 46%Tasman Fracture 99%Two Rocks 27%Western Eyre 25%Zeehan 74% * indicates Digital Elevation Model (DEM) data was included in analysis. Coverage of surveyed (non-modelled) bathymetry is shown in parentheses ()† has been included in analysis but is not an Australian Marine ParkFor glossary of features, see:Dove et al. (2020) A two-part seabed geomorphology classification scheme (v.2); Part 1: morphology features glossary. http://dx.doi.org/10.5281/ZENODO.4075248

本数据集提供2022版澳大利亚海洋公园(Australian Marine Parks)的地貌特征数据。该数据由澳大利亚海图项目(Seamap Australia)作为「我们的海洋公园」(Our Marine Parks,即澳大利亚公园局(Parks Australia))项目的一部分生成,项目获澳大利亚政府资助,旨在提升澳大利亚海洋公园海域分类相关的认知水平。 水深地形(bathymetry)数据由现有AusSeabed数据馆藏整合而来,并为每个海洋公园制作了多分辨率水深地形镶嵌图(详见https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/fb451be4-9de1-4bc2-8fd6-0f285f90916f)。本数据集纳入了截至2022年6月30日所有公开可用的水深地形数据;麦考瑞岛(Macquarie Island)数据已于2023年8月25日更新,以匹配最新的澳大利亚海洋公园边界。 研究团队使用R语言中的Whitebox工具包,通过geomorphron函数计算地貌形态计量参数。各海洋公园的处理均采用人工方式完成,根据各公园水深地形数据的质量、分辨率以及海底特征,调整对应的搜索距离与坡度阈值。地貌单元(geomorphons)参照Dove等人2020年发布的《海底地貌特征术语表》完成分类。这些地貌单元为海底分类提供了统一标准,可结合目视验证方法用于开发底栖生境地图。 本数据集以网页地图服务(Web Map Service)形式提供,地貌特征图层叠加于映射区域的山体阴影图层之上。用户可下载包含GeoTIFF文件与配套山体阴影数据的压缩包;同时附带了适用于桌面地理信息系统(GIS)的ESRI .lyr文件与QGIS .sld样式文件,用于数据可视化展示。 本次处理仅纳入水深地形覆盖率不低于25%的海洋公园。下表列出了本数据包包含的海洋公园,以及各公园对应的地貌数据覆盖率(基于处理时可用的水深地形数据计算)。需注意,对于近期已发布新勘测数据的区域,当前实际的水深地形覆盖率可能高于下表及本数据包中展示的数值。 公园名称 覆盖率占比 阿布洛霍斯(Abrolhos) 36% 阿波罗(Apollo) 52% 比格尔(Beagle) 35% 博格斯(Boags) 31% 布雷默(Bremer) 70% 卡那封峡谷(Carnarvon Canyon) 72% 中东部海域(Central Eastern*) 47% (41%) 圣诞岛(Christmas Island*) 31% (28%) 鳕鱼场(Cod Grounds) 97% 珊瑚海(Coral Sea*) 100% (30%) 东吉普斯兰(East Gippsland) 96% 东勒谢克(Eastern Recherche) 29% 弗林德斯(Flinders) 30% 富兰克林(Franklin) 51% 菲欣纳(Freycinet) 40% 加斯科因(Gascoyne) 53% 乔治普(Geographe) 25% 吉福德(Gifford) 100% 大澳大利亚湾(Great Australian Bight) 36% 赫德与麦克唐纳群岛(Heard & McDonald Islands*†) 100% (0%) 亨特(Hunter) 90% 休恩(Huon) 94% 杰维斯(Jervis) 99% 麦考瑞岛(Macquarie Island) 40% 美人鱼礁(Mermaid Reef) 72% 默里(Murray) 47% 纳尔逊(Nelson) 58% 宁格罗(Ningaloo) 54% 诺福克(Norfolk) 38% 珀斯峡谷(Perth Canyon) 98% 孤岛(Solitary Islands) 34% 南塔斯曼海隆(South Tasman Rise) 59% 西南角(South-west Corner) 46% 塔斯曼海断裂带(Tasman Fracture) 99% 双岩(Two Rocks) 27% 西艾尔(Western Eyre) 25% 泽汉(Zeehan) 74% * 表示本次分析纳入了数字高程模型(Digital Elevation Model, DEM)数据;括号内数值为实测(非建模)水深地形的覆盖率。 † 该区域已纳入分析,但并非澳大利亚海洋公园。 如需查阅地貌特征术语表,请参见:Dove等人2020年发布的《两部分海底地貌分类方案(第2版);第1部分:地貌特征术语表》,DOI: 10.5281/ZENODO.4075248

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