SEG-Y format of chirp seismic data collected offshore of the Chandeleur Islands, LA, 2006

In 2006 and 2007, the U.S. Geological Survey, in partnership with Louisiana Department of Natural Resources and the University of New Orleans, conducted geologic mapping to characterize the sea floor and shallow subsurface stratigraphy offshore of the Chandeleur Islands in Eastern Louisiana. The mapping was carried out during two cruises on the R/V Acadiana. Data were acquired with the following equipment: an SEA Ltd SwathPlus interferometric sonar (234 kHz), Klein 3000 dual frequency sidescan sonar, and an Edgetech 512i chirp subbottom profiling system. The long-term goal of this mapping effort is to produce high-quality geologic maps and geophysical interpretations that can be utilized to investigate the impact of Hurricane Katrina in 2005 and to identify sand resources within the region.

2006年至2007年，美国地质调查局（U.S. Geological Survey）与路易斯安那州自然资源部（Louisiana Department of Natural Resources）、新奥尔良大学（University of New Orleans）合作，开展旨在对路易斯安那州东部尚德勒尔群岛（Chandeleur Islands）近海的海底及浅地下地层进行特征表征的地质填图工作。本次填图依托“阿卡迪亚号”（R/V Acadiana）科考船完成两次航次作业。数据采集采用以下设备：SEA Ltd的SwathPlus干涉声呐（工作频率234 kHz）、Klein 3000双频侧扫声呐，以及Edgetech 512i型啁啾式海底剖面仪。本次填图工作的长期目标为产出高质量地质图件与地球物理解译成果，用于探究2005年卡特里娜飓风（Hurricane Katrina）对该区域的影响，并识别区域内的砂矿资源。