Trackline navigation for EdgeTech SB-512i chirp seismic-reflection data collected in 2015 by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA (Esri polyline shapefile, GCS WGS 84).

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy in the fall of 2012. The U.S. Geological Survey conducted cruises during the summers of 2014 and 2015 to map the inner continental shelf of the Delmarva Peninsula using geophysical and sampling techniques to define the geologic framework that governs coastal system evolution at storm-event and longer timescales. Geophysical data collected during the cruises include swath bathymetric, sidescan sonar, chirp and boomer seismic reflection profiles, grab sample and bottom photograph data. More information about the USGS survey conducted as part of the Hurricane Sandy Response-- Geologic Framework and Coastal Vulnerability Study can be found at the project website or on the WHCMSC Field Activity Web pages: https://woodshole.er.usgs.gov/project-pages/delmarva/, https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-002-FA and https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-001-FA. Data collected during the 2014 survey can be obtained here: https://doi.org/10.5066/F7MW2F60德尔马瓦半岛（Delmarva Peninsula）是一处总长220千米的海岬、沙嘴与障壁岛复合体，2012年秋季的飓风桑迪（Hurricane Sandy）对其造成了显著影响。美国地质调查局（U.S. Geological Survey, USGS）于2014年与2015年夏季开展航次作业，采用地球物理与采样技术对德尔马瓦半岛的内陆架进行测绘，以明确控制海岸系统在风暴事件及更长时间尺度下演化的地质框架。本次航次采集的地球物理数据涵盖条带测深数据、侧扫声呐数据、啁啾（chirp）与电火花震源（boomer）地震反射剖面数据，以及抓斗取样与海底摄影数据。更多关于作为“飓风桑迪响应——地质框架与海岸脆弱性研究”组成部分的USGS调查信息，可访问项目官方网站或WHCMSC野外活动网页：https://woodshole.er.usgs.gov/project-pages/delmarva/、https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-002-FA 与 https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-001-FA。2014年航次采集的数据可通过以下链接获取：https://doi.org/10.5066/F7MW2F60