2010-012-FA_k3k_Tracklines.shp - Tracklines of sidescan sonar data collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center offshore of the Gulf Islands, MS, 2010 (ESRI polyline shapefile)

In 2010, the U.S. Geological Survey in Woods Hole, MA and St. Petersburg, FL, in partnership with the U.S. Army Corps of Engineers, Mobile District conducted geologic mapping to characterize the seafloor and shallow subsurface stratigraphy offshore of the Gulf Islands of Mississippi. The mapping was carried out during two cruises in March, 2010 on the R/V Tommy Munro of Biloxi, MS. Data were acquired with the following equipment: an SEA Ltd SwathPlus interferometric sonar (both 234 kHz and 468 kHz systems), a Klein 3000 and a Klein 3900 dual frequency sidescan-sonar, and an Edgetech 512i chirp subbottom profiling system. The long-term goal of this mapping effort is to produce high-quality, high-resolution geologic maps and geophysical interpretations that can be utilized to identify sand resources within the region and better understand the Holocene evolution and anticipate future changes in this coastal system. More information on the field work can be accessed from the Woods Hole Coastal and Marine Science Center Field Activity webpage <http://quashnet.er.usgs.gov/data/2010/10012/> or the St. Petersburg Coastal and Marine Geology InfoBank <http://walrus.wr.usgs.gov/infobank/m/m210gm/html/m-2-10-gm.meta.html>.

2010年，位于马萨诸塞州伍兹霍尔与佛罗里达州圣彼得斯堡的美国地质调查局（U.S. Geological Survey）联合美国陆军工程兵团莫比尔分局，针对密西西比湾群岛近海海域开展地质填图工作，以表征该区域的海底与浅地下地层结构。本次填图作业于2010年3月分两次航次执行，作业平台为密西西比州比洛克西市的R/V Tommy Munro号科考船。本次作业采用以下设备采集数据：SEA有限公司的SwathPlus干涉声呐（涵盖234 kHz与468 kHz两个频段系统）、Klein 3000及Klein 3900双频侧扫声呐，以及Edgetech 512i型啁啾子海底剖面仪。本次填图工作的长期目标为产出高质量、高分辨率的地质图与地球物理解译成果，用于识别区域内的砂质资源，同时更深入地了解该海岸系统的全新世演化过程，并预测其未来变化。更多野外作业相关信息可通过伍兹霍尔海岸与海洋科学中心野外活动网页<http://quashnet.er.usgs.gov/data/2010/10012/>，或圣彼得斯堡海岸与海洋地质信息库<http://walrus.wr.usgs.gov/infobank/m/m210gm/html/m-2-10-gm.meta.html>查阅。