Archive of Digital Chirp Seismic Reflection Data Collected During USGS Cruise 05SCC01 Offshore of Port Fourchon and Timbalier Bay, Louisiana, August 2005

In August of 2005, the U.S. Geological Survey conducted geophysical surveys offshore of Port Fourchon and Timbalier Bay, Louisiana, and in nearby waterbodies. This report serves as an archive of unprocessed digital Chirp seismic reflection data, trackline maps, navigation files, GIS information, Field Activity Collection System (FACS) logs, observer's logbook, and formal FGDC metadata. Filtered and gained digital images of the seismic profiles are also provided.

The archived trace data are in standard Society of Exploration Geophysicists (SEG) SEG-Y format (Barry and others, 1975) and may be downloaded and processed with commercial or public domain software such as Seismic Unix (SU). Example SU processing scripts and USGS software for viewing the SEG-Y files (Zihlman, 1992) are also provided.

For more information on the seismic surveys see http://walrus.wr.usgs.gov/infobank/g/g105la/html/g-1-05-la.meta.html

These data are also available via GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean ( http://www.virtualocean.org/) earth science exploration and visualization applications.

2005年8月，美国地质调查局（U.S. Geological Survey）在路易斯安那州富尔尚港（Port Fourchon）与廷巴利耶湾（Timbalier Bay）近岸海域及周边水体开展了地球物理勘探工作。本报告旨在归档未经过处理的数字Chirp地震反射数据、测线地图、导航文件、地理信息系统（GIS）资料、野外活动采集系统（Field Activity Collection System, FACS）日志、观察员日志以及正式的联邦地理数据委员会（Federal Geographic Data Committee, FGDC）元数据，同时还提供了经过滤波与增益处理的地震剖面数字图像。

归档的轨迹数据采用标准勘探地球物理学家协会（Society of Exploration Geophysicists, SEG）SEG-Y格式（Barry等，1975），可通过商业或公有领域开源软件（如Seismic Unix（SU））进行下载与处理。本报告同时附带了用于查看SEG-Y文件的SU处理示例脚本及美国地质调查局开发的相关软件（Zihlman, 1992）。

如需了解此次地震勘探的更多详情，请访问：http://walrus.wr.usgs.gov/infobank/g/g105la/html/g-1-05-la.meta.html

该数据集还可通过GeoMapApp（http://www.geomapapp.org/）与Virtual Ocean（http://www.virtualocean.org/）这两款地球科学探索与可视化应用获取。