k183ar.m77t - MGD77 data file for Geophysical data from field activity K-1-83-AR in Arctic from 07/22/1983 to 08/03/1983

Single-beam bathymetry data along with DGPS navigation data was collected as part of field activity K-1-83-AR in Arctic from 07/22/1983 to 08/03/1983, http://walrus.wr.usgs.gov/infobank/k/k183ar/html/k-1-83-ar.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/k183ar/html/k-1-83-ar.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.

1983年7月22日至8月3日，在北极地区开展的野外作业K-1-83-AR中采集了单波束测深数据与差分GPS（DGPS）导航数据，相关元数据可访问：http://walrus.wr.usgs.gov/infobank/k/k183ar/html/k-1-83-ar.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。
本数据集源自美国海岸与海洋地质计划（Coastal and Marine Geology Program, CMGP）信息库野外作业目录下的空格分隔式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（NOAA）下属国家地球物理数据中心（NGDC）制定并提供的MGD77T格式。MGD77T格式包含头文档文件（.h77t）与数据文件（.m77t）。有关该格式的详细说明，可查阅本元数据文件交叉引用部分所列的相关出版物。原始数据文件的访问链接为：http://walrus.wr.usgs.gov/infobank/k/k183ar/html/k-1-83-ar.bath.html。