k181hw.m77t - MGD77 data file for Geophysical data from field activity K-1-81-HW in Hawaii from 01/26/1981 to 02/05/1981

Single-beam bathymetry data along with DGPS navigation data was collected as part of field activity K-1-81-HW in Hawaii from 01/26/1981 to 02/05/1981, http://walrus.wr.usgs.gov/infobank/k/k181hw/html/k-1-81-hw.meta.html
The geophysical source was a Knudsen 12 kHz 320B/R echosounder.
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/k/k181hw/html/k-1-81-hw.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.

单波束测深数据与差分GPS（DGPS）导航数据，于1981年1月26日至1981年2月5日期间，在夏威夷开展的K-1-81-HW野外作业中采集，相关元数据页面链接为http://walrus.wr.usgs.gov/infobank/k/k181hw/html/k-1-81-hw.meta.html。
本次作业采用的地球物理探测声源为Knudsen 12 kHz 320B/R型回声测深仪。
本数据集的原始数据取自美国海岸与海洋地质计划（CMGP）信息库野外作业目录中的空格分隔ASCII文本文件（文件链接为http://walrus.wr.usgs.gov/infobank/k/k181hw/html/k-1-81-hw.bath.html），后被重新格式化为由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（NGDC）提供的MGD77T格式。
MGD77T格式包含头文档文件（.h77t）与数据文件（.m77t）两类。
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部分所列的相关出版物。