l383wf.m77t - MGD77 data file for Geophysical data from field activity L-3-83-WF in Juan de Fuca from 08/19/1983 to 09/01/1983

Single-beam bathymetry and gravity data along with DGPS navigation data was collected as part of field activity L-3-83-WF in Juan de Fuca from 08/19/1983 to 09/01/1983, http://walrus.wr.usgs.gov/infobank/l/l383wf/html/l-3-83-wf.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/l383wf/html/l-3-83-wf.bath.html and http://walrus.wr.usgs.gov/infobank/l/l383wf/html/l-3-83-wf.grav.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.1983年8月19日至1983年9月1日，研究团队在胡安·德富卡（Juan de Fuca）海域开展野外活动L-3-83-WF期间，采集了单波束测深（single-beam bathymetry）数据、重力数据与差分全球定位系统（Differential Global Positioning System, DGPS）导航数据，相关元数据可访问：http://walrus.wr.usgs.gov/infobank/l/l383wf/html/l-3-83-wf.meta.html 本数据集由存储于海岸与海洋地质计划（Coastal and Marine Geology Program, CMGP）信息库野外活动目录中的空格分隔ASCII文本文件重新格式化而成，源文件地址为：http://walrus.wr.usgs.gov/infobank/l/l383wf/html/l-3-83-wf.bath.html 与 http://walrus.wr.usgs.gov/infobank/l/l383wf/html/l-3-83-wf.grav.html，转换为美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）下属国家地球物理数据中心（National Geophysical Data Center, NGDC）提供的MGD77T格式。该格式包含头文档文件（.h77t）与数据文件（.m77t），有关该格式的更多细节可查阅本元数据文件交叉参考（Cross-reference）部分所列的相关出版物。