Ship-based Trackline Geophysical Data (MGD77) from the Antarctica Ross Sea acquired during R/V Nathaniel B. Palmer expedition NBP1502 (2015)

This data set was acquired with a Echosounder, Seatex Seapath330 Navigation System and Bell Aerospace BGM-3 Gravimeter during R/V Nathaniel B. Palmer expedition NBP1502 conducted in 2015 (Chief Scientist: Dr. Philip Bart, Investigators: Dr. Philip Bart, Dr. John Anderson). These data files are of MGD77 format and include Bathymetry, Gravity Field, Gravity Free Air Anomaly and Navigation data that were processed after acquisition. Data were acquired as part of the project(s): Timing and Duration of the LGM and Post-LGM Grounding Events in Whales Deep Paleo Ice Stream, Eastern Ross Sea Middle Continental Shelf; Evidence for Paleo Ice Stream Collapse in the Western Ross Sea since the Last Glacial Maximum. Funding was provided by NSF award(s): PLR12-46353, PLR12-46357.

本数据集采集于2015年执行的内森尼尔·B·帕尔默号（R/V Nathaniel B. Palmer）科考航次NBP1502，本次航次搭载的观测设备包括回声测深仪（Echosounder）、Seatex Seapath330导航系统（Seatex Seapath330 Navigation System）以及贝尔航空航天BGM-3重力仪（Bell Aerospace BGM-3 Gravimeter）；航次首席科学家为Philip Bart博士，研究团队成员包括Philip Bart博士与John Anderson博士。
本数据集采用MGD77格式（MGD77 format）存储，包含采集后经过预处理的水深数据、重力场数据、重力自由空气异常（Gravity Free Air Anomaly）数据以及导航数据。
本次数据采集隶属于两项研究项目：一是罗斯海中部大陆架东部鲸鱼深渊古冰流的末次冰盛期及冰盛期后冰流接地事件的发生时间与持续时长；二是罗斯海西部自末次冰盛期以来古冰流坍塌的证据。
本研究由美国国家科学基金会（National Science Foundation，简称NSF）资助，资助编号为PLR12-46353与PLR12-46357。