Data Layer Containing the Features Interpreted to be on the Sea Floor within the National Oceanic and Atmospheric Administration (NOAA) H11255 Survey Area in Southeastern Long Island Sound (H11255INTERP.SHP, Geographic)

Digital terrain models (DTMs) produced from multibeam bathymetric data provide valuable base maps for marine geological interpretations. These maps help define the geological variability of the seafloor (one of the primary controls of benthic habitat diversity); improve our understanding of the processes that control the distribution and transport of bottom sediments, and the distribution of benthic habitats and associated infaunal community structures; and provide a detailed framework for future research, monitoring, and management activities. The bathymetric survey interpreted herein (National Oceanic and Atmospheric Administration (NOAA) survey H11255) covers roughly 95 km2 of seafloor in southeastern Long Island Sound. This bathymetry has been examined in relation to seismic reflection data collected concurrently, as well as archived seismic profiles acquired as part of a long-standing geologic mapping partnership between the State of Connecticut and the U.S. Geological Survey (USGS). The objective of this work was to use these acoustic data sets to interpret geomorphological attributes of the seafloor, and to use these interpretations to better understand the Quaternary geologic history and modern sedimentary processes.由多波束测深数据生成的数字地形模型（Digital Terrain Models, DTMs）可为海洋地质解译提供极具价值的基础底图。此类底图可用于明确海底的地质差异性——该差异性正是调控底栖生境多样性的核心因素之一；有助于深化我们对调控海底沉积物分布与输运、底栖生境分布及相关底内生物群落结构的各类过程的理解；并可为后续的研究、监测与管理活动提供精细的研究框架。本文所解译的测深调查数据（美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）H11255号调查）覆盖了长岛湾东南部约95平方千米的海底区域。本次测深数据已与同期采集的地震反射数据，以及作为康涅狄格州与美国地质调查局（U.S. Geological Survey, USGS）长期地质填图合作项目一部分的归档地震剖面进行了关联分析。本研究的目标为利用这些声学数据集解译海底地貌特征，并通过这些解译结果进一步理解第四纪地质历史与现代沉积作用过程。