Helicopter-based GPR survey of Rutor glacier and nearby glaciers, Aosta Valley, Italy, in May 2012

This dataset contains Ground Penetrating Radar (GPR) data collected on May 2012, from helicopter, with a 70 Mhz antenna, on the Rutor Glacier (files numbered from 6 to 10), and nearby glaciers situated in Aosta Valley (European Alps). They were collected for ARPA Val d'Aosta, the local environmental protection agency. The Rutor glacier data and their interpretation, at August 2024, are also being submitted to The Cryosphere scientific journal, in a possible future publication entitled Ground penetrating radar on Rutor temperate glacier supported by ice-thickness modeling algorithms for bedrock detection, by Andrea Vergnano, Diego Franco and Alberto Godio. The .DZT files are the data files. They can be opened with specialistic geophysical software. In particular, a free and open access package is available, called RGPR and installable in the R environment. (https://cran.r-project.org/) (https://emanuelhuber.github.io/RGPR/). After loading the RGPR library with the R command library(RGPR) a file can be read and stored in the "data" variable by the command data=readGPR("FILE____001.DZT") The .PLT files are simple text files that contain the geolocation information in standard NMEA format (https://aprs.gids.nl/nmea/#gga).Each row is a measurement, and there is a measurement every second. To assign the correct geolocation to each GPR trace contained in the .DZT files there are two options: 1) follow your specialistic software manual 2) do it manually by considering that the GPR sample rate of traces is constant in time. The first .PLT line refers to the first GPR trace, and the last .PLT line refers to the last GPR trace.本数据集包含2012年5月通过直升机搭载70 MHz天线，在欧洲阿尔卑斯山区奥斯塔谷的鲁托尔冰川（文件编号6至10）及邻近冰川采集的探地雷达（Ground Penetrating Radar, GPR）数据，采集方为当地环境保护机构ARPA Val d'Aosta。 截至2024年8月，鲁托尔冰川的GPR数据及其解译成果已提交至《冰冻圈》（The Cryosphere）期刊以待未来刊发。该论文题为《基于冰厚建模算法的鲁托尔温带冰川探地雷达基岩探测》（Ground penetrating radar on Rutor temperate glacier supported by ice-thickness modeling algorithms for bedrock detection），作者为Andrea Vergnano、Diego Franco与Alberto Godio。 .DZT格式文件为原始数据文件，可通过专业地球物理软件打开。其中一款适配R语言环境的免费开源工具包为RGPR，相关资源链接为：(https://cran.r-project.org/) 与 (https://emanuelhuber.github.io/RGPR/)。通过R语言命令加载RGPR库： `library(RGPR)` 随后可通过命令`data=readGPR("FILE____001.DZT")`读取指定文件并将数据存储至`data`变量中。 .PLT格式文件为纯文本文件，内含标准NMEA格式的地理位置信息（https://aprs.gids.nl/nmea/#gga）。该文件每一行对应一次每秒一次的定位测量。为.DZT文件中的每一条GPR道（GPR trace）赋予正确地理位置信息有两种方案： 1. 参照所用专业地球物理软件的操作手册； 2. 手动匹配：由于GPR道的采样率恒定，.PLT文件的第一行对应第一条GPR道，最后一行对应最后一条GPR道。