Interpreted Distribution of the Axes of Fluvially-Cut Late Pleistocene Channels Buried Beneath Edgartown Harbor, Massachusetts, in Geographic, WGS84 (H11346_BCHANNELS.SHP)

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Massachusetts Office of Coastal Zone Management (MA CZM), is producing detailed geologic maps of the coastal sea floor. Imagery, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities along this part of the Massachusetts coastline, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. Interpretive data layers were derived from the combined single-beam and multibeam echo-sounder data and sidescan-sonar data collected in the vicinity of Edgartown Harbor, Massachusetts. During August 2008 seismic-reflection profiles (Boomer and Chirp) were acquired, and during September 2008 bottom photographs and surficial sediment data were acquired as part of two ground-truth reconnaissance surveys.

美国地质调查局（U.S. Geological Survey, USGS）联合美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）以及马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management, MA CZM），正在编制沿海海底详细地质图。最初由NOAA为海图绘制工作采集的影像数据，可为马萨诸塞州该段海岸线沿线的科研与管理活动提供基础支撑框架，能够展示海床的组成与地形，并提供沉积物运移及底栖生境相关信息。解释性数据图层由在马萨诸塞州埃德加敦港周边采集的单波束与多波束回声测深数据、侧扫声呐数据整合生成。2008年8月采集了地震反射剖面（Boomer与Chirp）数据；2008年9月，通过两次地面验证踏勘调查，获取了海底照片与表层沉积物数据。