Raw HYPACK navigation logs (text) collected by the U.S. Geological Survey from Middle Ground, MA, 2007 (2007-039-FA_hypack)

These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center (WHCMSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of seafloor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters of coastal Massachusetts, primarily in water depths of 2-30 meters. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (https://woodshole.er.usgs.gov/project-pages/coastal_mass/). The data collected in this study area are located in both Buzzards Bay and Vineyard Sound and are primarily in the shallow water areas around the eastern Elizabeth Islands and Martha's Vineyard, Massachusetts. The data include high resolution bathymetry, acoustic-backscatter intensity, sound velocity in water, seismic-reflection profiles, and navigation data. These data were collected during several cruises between 2007 and 2011 onboard the R/V Rafael using the following equipment: an SEA Ltd SwathPlus interferometric sonar (234 kHz), Klein 3000 dual frequency sidescan sonar, a boomer source and Geometrics 8-channel GeoEel streamer, a Knudsen 3200 subbottom profiling system, and 4 GPS antennae. More information about the cruises conducted as part of the project: Geologic Mapping of the Seafloor Offshore of Massachusetts can be found on the Woods Hole Coastal and Marine Science Center Field Activity webpages: https://cmgds.marine.usgs.gov/fan_info.php?fan=2011-013-FA, https://cmgds.marine.usgs.gov/fan_info.php?fan=2009-068-FA, https://cmgds.marine.usgs.gov/fan_info.php?fan=2007-039-FA, https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-100-FA, and https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-047-FA.

本数据集基于马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management, CZM）与美国地质调查局（U.S. Geological Survey, USGS）海岸与海洋地质项目下属伍兹霍尔海岸与海洋科学中心（Woods Hole Coastal and Marine Science Center, WHCMSC）达成的合作协议采集完成。该项目于2003年启动，核心目标是构建区域地质框架信息，以支撑海岸与海洋资源的管理工作。精准的海底地质数据与专题图件，是保护鱼类栖息地、划定海洋资源范围以及评估自然或人类活动引发的环境变化的首要关键步骤。本项目聚焦马萨诸塞州沿岸近岸海域，作业水深主要介于2至30米之间。本次测绘合作采集的数据已以一系列美国地质调查局开放文件报告（USGS Open-File Reports）的形式发布，详情可访问：https://woodshole.er.usgs.gov/project-pages/coastal_mass/。本研究区的数据采集范围覆盖巴泽兹湾（Buzzards Bay）与温亚德海峡（Vineyard Sound），主要集中在马萨诸塞州伊丽莎白群岛东部及玛莎葡萄园岛（Martha's Vineyard）周边的浅水区。本次采集的数据包括高分辨率水深地形数据、声学背散射强度数据、海水声速数据、地震反射剖面数据以及导航定位数据。本数据集于2007至2011年间通过多次科考航次在“拉斐尔号”（R/V Rafael）研究船上采集，所用设备包括：SEA有限公司生产的SwathPlus干涉声呐（234 kHz）、Klein 3000双频侧扫声呐、Boomer震源与Geometrics 8通道GeoEel拖缆系统、Knudsen 3200浅地层剖面系统，以及4台GPS天线。关于本项目下属的“马萨诸塞州近海海底地质测绘”科考航次的更多详细信息，可访问伍兹霍尔海岸与海洋科学中心野外活动网页：https://cmgds.marine.usgs.gov/fan_info.php?fan=2011-013-FA、https://cmgds.marine.usgs.gov/fan_info.php?fan=2009-068-FA、https://cmgds.marine.usgs.gov/fan_info.php?fan=2007-039-FA、https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-100-FA 以及 https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-047-FA。