ATL_CMP: usSEABED component and features data for the entire U.S. Atlantic Coast

This component data layer (_CMP.txt) file gives information about selected components (minerals, rock type, microfossils, benthic biota) and seafloor features (bioturbation, structure, ripples) at a given site. Values in the attribute fields represent the membership to that attribute's fuzzy set. For components such as minerals, rocks, micro-biota and plants, and/or epifauna and infauna, corals and other geologic and biologic information, the value depends on sentence structure and other components in description. For features (denoted by an asterisk) such as ripples, ophiuroids, sponges, shrimp, worm tubes, lamination, lumps, grading, and/or bioturbation, the value of the fuzzy set depends on the development of the attribute. Only the relative fuzzy presence of components and features can be determined; the absence of information does not indicate a lack of the attribute, only lack of information about that attribute.

本组分数据层（component data layer）文件（_CMP.txt）提供了指定站位的选定组分与海底特征相关信息。其中选定组分包括矿物（minerals）、岩石类型（rock type）、微化石（microfossils）、底栖生物（benthic biota）；海底特征则涵盖生物扰动（bioturbation）、构造（structure）、波纹（ripples）。属性字段中的数值代表该属性对模糊集合（fuzzy set）的隶属度。针对矿物、岩石、微生物与植物、表栖生物（epifauna）、内栖生物（infauna）、珊瑚及其他地质与生物信息类组分，其隶属度数值取决于描述语句的句法结构与描述文本中的其他组分。对于以星号标注的特征（如波纹、蛇尾类（ophiuroids）、海绵（sponges）、虾类（shrimp）、虫管（worm tubes）、纹层（lamination）、团块（lumps）、粒序（grading）及生物扰动），其模糊集合的隶属度数值取决于该属性的发育程度。仅可确定组分与特征的相对模糊存在程度；未记录相关信息仅代表缺乏该属性的相关资料，并不意味着该属性实际不存在。