100-meter grid representing the coastal plain unconformity (in meters) beneath the inner-continental shelf offshore of Fire Island, NY (FI_CPUN, UTM Zone 18N, WGS 84, Esri Binary Grid)

The U.S. Geological Survey (USGS) mapped approximately 336 square kilometers of the lower shoreface and inner-continental shelf offshore of Fire Island, New York in 2011 using interferometric sonar and high-resolution chirp seismic-reflection systems. This report presents maps of bathymetry, acoustic backscatter, the coastal plain unconformity, the Holocene marine transgressive surface and modern sediment thickness. These spatial data support research on the Quaternary evolution of the Fire Island coastal system and provide baseline information for research on coastal processes along southern Long Island.
More information about this field activity and the data collected can be found at the Field Activity Web Page (http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-005-FA)

美国地质调查局（U.S. Geological Survey，USGS）于2011年借助干涉声呐与高分辨率chirp地震反射系统，完成了纽约州火岛近海下滨面及内陆架区域约336平方千米范围的测绘工作。本报告收录了水深地形、声学背散射、海岸平原不整合面、全新世海侵面以及现代沉积物厚度的相关图件。这些空间数据可为火岛海岸系统的第四纪演化研究提供支撑，同时为南长岛沿岸的海岸过程研究提供基准参考信息。
有关本次野外作业及所采集数据的更多详情，可访问野外作业网页（http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-005-FA）