Shot point navigation at 100 shot intervals for EdgeTech SB-512i chirp seismic-reflection data collected by the U.S. Geological Survey off the southern shore of Martha's Vineyard, MA, 2007 (ESRI POINT SHAPEFILE, SEISMIC_100SHT.SHP).

The USGS Woods Hole Science Center conducted a nearshore geophysical survey offshore of the southern coast of Martha's Vineyard, in the vicinity of the Martha's Vineyard Coastal Observatory (MVCO) in August 2007. This mapping program was part of a larger research effort supporting the Office of Naval Research (ONR) Ripples Directed-Research Initiative (DRI) studies at MVCO by providing data collection and modeling. The geophysical data will be used to provide initial conditions for wave and circulation models for the study area. Ultimately, geophysical mapping, oceanographic measurements and modeling will help to improve our understanding of coastal sediment-transport processes.

The geophysical mapping utilized a suite of high-resolution instrumentation to map the surficial sediment distribution, depth and sub-surface geology: dual-frequency 100/500 KHz sidescan-sonar system, 234-KHz interferometric sonar, and 500 Hz -12 KHz chirp sub-bottom profiler. The survey was conducted aboard the M/V Megan Miller August 9-13, 2007. The study area covers 35 square kilometers from about 0.2 km to 5-km offshore of the south shore of Martha's Vineyard, and ranges in depth from ~ 5 to 20 meters.

美国地质调查局（United States Geological Survey, USGS）伍兹霍尔科学中心于2007年8月，在玛莎葡萄园岛南岸近海、玛莎葡萄园岛海岸观测站（Martha's Vineyard Coastal Observatory, MVCO）周边海域开展了近岸地球物理调查。本次测绘项目属于一项更大规模研究工作的组成部分，该工作通过提供数据采集与建模服务，支持美国海军研究办公室（Office of Naval Research, ONR）的Ripples定向研究计划（Directed-Research Initiative, DRI）在MVCO开展的相关研究。本次采集的地球物理数据将为研究区域的波浪与环流模型提供初始场条件。最终，地球物理测绘、海洋学观测与建模工作将有助于深化我们对海岸泥沙输运过程的认知。
本次地球物理测绘采用一套高分辨率仪器套装，以获取表层沉积物分布、水深及地下地质结构数据：包括双频100/500千赫侧扫声呐系统、234千赫干涉声呐，以及500赫兹-12千赫啁啾亚底剖面仪。本次调查于2007年8月9日至13日在“梅根·米勒号”（M/V Megan Miller）作业船上开展。研究区域覆盖玛莎葡萄园岛南岸近海约0.2千米至5千米的海域，总面积35平方千米，水深范围约5至20米。