l2b78sc.m77t - MGD77 data file for Geophysical data from field activity L-2B-78-SC in Southern California from 05/25/1978 to 05/29/1978

Single-beam bathymetry and magnetics data along with DGPS navigation data was collected as part of field activity L-2B-78-SC in Southern California from 05/25/1978 to 05/29/1978, http://walrus.wr.usgs.gov/infobank/l/l2b78sc/html/l-2b-78-sc.meta.html
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/l/l2b78sc/html/l-2b-78-sc.bath.html and http://walrus.wr.usgs.gov/infobank/l/l2b78sc/html/l-2b-78-sc.mag.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.

1978年5月25日至1978年5月29日期间，在美国南加州开展的野外作业L-2B-78-SC中采集得到单波束测深（single-beam bathymetry）、磁法数据及差分GPS（DGPS）导航数据，相关元数据可访问：http://walrus.wr.usgs.gov/infobank/l/l2b78sc/html/l-2b-78-sc.meta.html。
本数据集由美国地质调查局海岸与海洋地质项目（Coastal and Marine Geology Program, CMGP）信息库野外作业目录下的空格分隔ASCII文本文件转换而来，对应数据源链接分别为：http://walrus.wr.usgs.gov/infobank/l/l2b78sc/html/l-2b-78-sc.bath.html 与 http://walrus.wr.usgs.gov/infobank/l/l2b78sc/html/l-2b-78-sc.mag.html，转换后的格式为美国国家海洋和大气管理局（NOAA）下属国家地球物理数据中心（National Geophysical Data Center, 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）。有关该格式的更多细节，可查阅本元数据文件交叉参考部分列出的相关文献。