Archive of Digital Chirp Subbottom Profile Data Collected During USGS Cruise 13GFP01, Brownlee Dam and Hells Canyon Reservoir, Idaho and Oregon, 2013

From March 16 - 31, 2013, the U.S. Geological Survey conducted a geophysical survey to investigate sediment deposits and long-term sediment transport within the Snake River from Brownlee Dam to Hells Canyon Reservoir, Idaho; this effort will help the USGS to better understand geologic processes. This report serves as an archive of unprocessed digital chirp subbottom data, trackline maps, navigation files, GIS information, and formal FGDC metadata. Gained digital images of the seismic profiles are also provided. The archived trace data are in standard Society of Exploration Geophysicists (SEG) SEG Y revision 0 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. These data are also available for viewing using GeoMapApp (<http://www.geomapapp.org/>) and Virtual Ocean (<http://www.virtualocean.org/>) multi-platform open source software. In addition, the SEG Y files can also be downloaded from the USGS Coastal and Marine Geoscience Data System (<http://cmgds.marine.usgs.gov>)2013年3月16日至31日，美国地质调查局（U.S. Geological Survey, USGS）开展了一项地球物理勘测工作，旨在对爱达荷州布朗利大坝至地狱峡谷水库河段的斯内克河（Snake River）内的沉积物沉积与长期泥沙运移情况进行调查。本项工作将助力USGS进一步深化对地质作用过程的认知。 本报告作为未处理的数字啁啾（chirp）子底数据、测线图、导航文件、地理信息系统（Geographic Information System, GIS）资料以及正式的联邦地理数据委员会（Federal Geographic Data Committee, FGDC）元数据的存档载体，同时还提供了地震剖面的增益数字图像。 存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 0版格式（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。本次还附带了示例SU处理脚本，以及用于查看SEG Y文件的USGS配套软件（Zihlman，1992）。 此外，本数据集还可通过多平台开源软件GeoMapApp (<http://www.geomapapp.org/>) 和Virtual Ocean (<http://www.virtualocean.org/>) 进行浏览。 SEG Y格式文件亦可从美国地质调查局海岸与海洋地球科学数据系统的官方网站 (<http://cmgds.marine.usgs.gov>) 下载。