l485wf.m77t - MGD77 data file for Geophysical data from field activity L-4-85-WF in Juan de Fuca from 07/28/1985 to 08/08/1985

Single-beam bathymetry and magnetics data along with DGPS navigation data was collected as part of field activity L-4-85-WF in Juan de Fuca from 07/28/1985 to 08/08/1985, http://walrus.wr.usgs.gov/infobank/l/l485wf/html/l-4-85-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/l485wf/html/l-4-85-wf.bath.html http://walrus.wr.usgs.gov/infobank/l/l485wf/html/l-4-85-wf.bath.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.

1985年7月28日至8月8日，研究团队于胡安·德富卡（Juan de Fuca）海域完成编号为L-4-85-WF的野外作业，采集获得单波束测深（single-beam bathymetry）数据、磁法数据与差分GPS（DGPS）导航数据，相关元数据可通过以下链接查阅：http://walrus.wr.usgs.gov/infobank/l/l485wf/html/l-4-85-wf.meta.html
本数据集源自海岸与海洋地质计划（Coastal and Marine Geology Program, CMGP）信息库野外作业目录中存储的空格分隔ASCII文本文件，现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, NOAA）下属国家地球物理数据中心（National Geophysical Data Center, NGDC）制定的MGD77T格式，原始数据文件可通过以下链接获取：http://walrus.wr.usgs.gov/infobank/l/l485wf/html/l-4-85-wf.bath.html http://walrus.wr.usgs.gov/infobank/l/l485wf/html/l-4-85-wf.bath.html
MGD77T格式包含两类文件：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）部分所列的相关出版物。