JPEG images of seismic data collected offshore of the Chandeleur Islands, LA, 2007

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年间，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，针对路易斯安那州东部尚德勒尔群岛（Chandeleur Islands）近海区域，开展以刻画海底及浅地下地层特征为目标的地质填图工作。本次填图工作在R/V Acadiana号的两次科考航次中完成。数据采集使用了以下设备：SEA有限公司SwathPlus干涉声呐（234 kHz）、Klein 3000双频侧扫声呐，以及Edgetech 512i型啁啾海底剖面系统。本次填图工作的长期目标是编制高质量地质图并开展地球物理解译，以此探究2005年卡特里娜飓风（Hurricane Katrina）对该区域的影响，并探明区域内的砂矿资源。