15-Minute Navigation for Seismic-Reflection Data Collected in Eastern Rhode Island Sound in 1975 (A75_6NAV_SORT.SHP)

During 1975, the U.S. Geological Survey (USGS) conducted a seismic-reflection survey utilizing Uniboom seismics in eastern Rhode Island Sound aboard the Research Vessel Asterias. This cruise totalled 8 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.

1975年，美国地质调查局（U.S. Geological Survey, USGS）搭乘“阿斯特里亚斯号”研究船（Research Vessel Asterias），在罗得岛湾东部海域开展了采用Uniboom地震法（Uniboom seismics）的反射地震勘探作业。本次勘探航次共计8个勘测日。本次勘探所获数据以模拟格式记录，并存档于USGS。鉴于近期学界对罗得岛湾地质研究的关注度提升，且为在保留原始纸质记录的前提下提升数据可获取性，本航次的地震数据已被扫描并转换为TIFF图像文件与SEG-Y数据文件。导航数据已从罗兰-C（LORAN-C）时间延迟参数转换为经纬度坐标，该数据以ESRI形状文件（ESRI shapefile）格式提供，同时还以空格分隔的文本格式提供东向与北向坐标。