j100sf.m77t and j100sf.h77t: MGD77T data and header files for single-beam bathymetry data for field activity J-1-00-SF in Grizzly Bay and Suisun Bay from 03/13/2000 to 03/14/2000

Single-beam bathymetry data along with GPS navigation data was collected as part of the U.S. Geological Survey cruise J-1-00-SF. The cruise was conducted in Grizzly Bay and Suisun Bay in the San Francisco Bay area, California from March 13 to March 14, 2000. The chief scientist was John Chin from the USGS Coastal and Marine Geology office in Menlo Park, CA. The purpose of this cruise was to study San Francisco Bay's response of bed morphology and surficial sediment texture to flow events.
These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/j/j100sf/html/j-1-00-sf.meta.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.

作为美国地质调查局（U.S. Geological Survey）J-1-00-SF航次的一部分，本次采集了单波束测深数据与GPS导航数据。该航次于2000年3月13日至14日在加利福尼亚州旧金山湾区的格里兹利湾（Grizzly Bay）与苏森湾（Suisun Bay）实施。本次航次的首席科学家为来自加利福尼亚州门洛帕克市美国地质调查局海岸与海洋地质办公室的约翰·钦（John Chin）。本次航次的研究目标为探究旧金山湾床面形态与表层沉积物质地对水动力事件的响应。本数据集源自美国地质调查局海岸与海洋地质计划（Coastal and Marine Geology Program，简称CMGP）信息库野外活动目录中存储的空格分隔ASCII文本文件，文件访问地址为http://walrus.wr.usgs.gov/infobank/j/j100sf/html/j-1-00-sf.meta.html，已被重新格式化为由美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，简称NOAA）国家地球物理数据中心（National Geophysical Data Center，简称NGDC）制定的MGD77T格式。MGD77T格式包含头文件（文档文件，后缀为.h77t）与数据文件（后缀为.m77t）。有关该格式的更多详细信息，可查阅本元数据文件交叉参考（Cross_reference）章节列出的相关出版物。