15-Minute Navigation for Seismic-Reflection Data Collected in Southern Rhode Island Sound in 1980 (A80_6NAV_SORT.SHP)

During 1980, the U.S. Geological Survey (USGS) conducted a seismic-reflection survey utilizing Uniboom seismics in southern Rhode Island Sound aboard the Research Vessel Asterias. This cruise totalled 3 survey days. Data from this survey were recorded in analog form and archived at the USGS. Due to recent interest in the geology of Rhode Island Sound and in an effort to make the data more readily accessible while preserving the original paper records, the seismic data from this cruise were scanned and converted to TIFF images and SEG-Y data files. Navigation data were converted from LORAN-C time delays to latitudes and longitudes, which are available in ESRI shapefile format and as eastings and northings in space-delimited text format.

1980年，美国地质调查局（U.S. Geological Survey, USGS）搭乘“阿斯特里亚斯号”科考船（Research Vessel Asterias）在罗得岛湾南部开展了一项采用Uniboom震源地震（Uniboom seismics）技术的反射地震勘探（seismic-reflection survey）作业，本次勘探总计3个作业日。本次勘探采集的数据以模拟格式记录，并存档于美国地质调查局。鉴于近期学界对罗得岛湾地质研究的关注度日益提升，同时为在完整保留原始纸质记录的前提下提升数据可获取性，科研人员将本次勘探获取的地震数据扫描转换为标签图像文件格式（TIFF）图像与SEG-Y数据文件（SEG-Y data files）。导航数据原以罗兰-C（LORAN-C）时间延迟形式存储，现已被转换为经纬度坐标，该坐标数据以ESRI形状文件（ESRI shapefile）格式提供，同时还以空格分隔文本格式提供东距与北距坐标。