Kerguelen-Heard Island region - Mapping Under Sea Geomorphology

The geomorphology was digitised using contours derived from the DEM created by Dr. R. Beaman from James Cook University for Geoscience Australia.The data, the metadata record and the report related to the creation of that DEM are available on the Geoscience Australia website:Name of data set: Kerguelen Plateau Bathymetric Grid 2010Catalogue number: 71552https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search?node=srv#/metadata/a05f7893-007f-7506-e044-00144fdd4fa6Digitising:It must be stressed that neither seismic data, sea floor sediments, nor sea floor biota were used to determine the sea floor geomorphology. The description on how the geomorphology was derived is described in the attached report.The features described as slopes from the 900m to 1300m isobaths and from the 1300m to 2500m isobaths were identified for fisheries purposes and not geomorphology purposes. A geomorphologist may combine these slopes into a single feature.Some of the larger shallow features identified as banks may more properly be identified as plateaus. It would require a more in depth analysis of the DEM, slopes and sediments to accurately identify the feature as a bank or plateau.

本次地貌数据通过提取澳大利亚地质调查局（Geoscience Australia）委托詹姆斯·库克大学R·比曼博士制作的数字高程模型（DEM）的等高线完成数字化。
该数据集、元数据记录以及与该数字高程模型制作相关的报告均可在澳大利亚地质调查局官网获取：
数据集名称：凯尔盖朗海台水深栅格2010（Kerguelen Plateau Bathymetric Grid 2010）
目录编号：71552
访问链接：https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search?node=srv#/metadata/a05f7893-007f-7506-e044-00144fdd4fa6
数字化说明：
需特别强调，本次海底地貌的确定未使用地震数据、海底沉积物数据以及海底生物群落数据。该地貌数据的具体提取方法详见随附报告。
本次标注的900米至1300米等深线区间、1300米至2500米等深线区间的斜坡特征，其划分初衷为渔业应用而非地貌学研究，地貌学家可将此类斜坡合并为单一地貌单元。
部分被识别为“滩地”的大型浅海地貌，实际上更符合“高原”的定义。若要精准区分该类地貌为滩地还是高原，需对数字高程模型、斜坡特征与沉积物数据开展更深入的分析。