j295mb.m77t and j295mb.h77t: MGD77T data and header files for single-beam bathymetry data for field activity J-2-95-MB in Monterey Bay from 03/06/1995 to 04/15/1995

Single-beam bathymetry data along with DGPS navigation data was collected as part of the U.S. Geological Survey cruise J-2-95-MB. The cruise was conducted from in Monterey Bay, California from March 6 to April 15, 1995. The chief scientists were Roberto Anima, Andy Stevenson, and Steve Eittreim all from the USGS Coastal and Marine Geology office in Menlo Park, CA.
The purpose of this cruise was to compile a side-scan sonar mosaic of the offshore area of Monterey Bay Marine Santuary. The geophysical source was a Lowrance fathometer.
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/j295mb/html/j-2-95-mb.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.

本数据集包含单波束测深数据（single-beam bathymetry）与差分GPS（DGPS）导航数据，系美国地质调查局（U.S. Geological Survey, USGS）航次J-2-95-MB的采集成果。本次航次于1995年3月6日至4月15日在加利福尼亚州蒙特雷湾开展，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Roberto Anima、Andy Stevenson与Steve Eittreim。

本次航次的核心目标为构建蒙特雷湾海洋保护区（Monterey Bay Marine Sanctuary）近海海域的侧扫声呐镶嵌图，所用地球物理探测设备为Lowrance测深仪（Lowrance fathometer）。

本数据集源自存储于海岸与海洋地质项目（Coastal and Marine Geology Program, CMGP）信息库（InfoBank）野外活动目录（网址：http://walrus.wr.usgs.gov/infobank/j/j295mb/html/j-2-95-mb.meta.html）中的空格分隔ASCII文本文件，已被重新格式化为美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）国家地球物理数据中心（National Geophysical Data Center, NGDC）提供的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）。有关该格式的更多信息，可查阅本元数据文件交叉参考部分所列的相关出版物。