Melt rates of 44 repeated phase-sensitive radar point measurements between December 2015/January 2016 and December 2016 at the Filchner Ice Shelf, Antarctica

The dataset consists of raw data and Lagrangian basal melt rates of 44 repeated phase-sensitive radar (pRES) point measurements, first recorded in December 2015/January 2016 and repeated in December 2016 at the Filchner Ice Shelf, Antarctica. These measurements were allocated in 13 cross-sections with up to five measurements at different locations along the sections across the channel: outside west (OW) of the channel (OW), at the steepest western (SW) flank, at the lowest (L) surface elevation, at the steepest eastern (SE) flank and outside east (OE) of the channel.
These Lagrangian measurements allow the estimation of basal melt rates based on estimated vertical displacements of englacial and basal reflections. At 7 sites, more than one strong basal reflection occurred. Therefore, we averaged the melt rates we derived from the first and from the strongest basal return. Beside raw-data, the dataset includes coordinates of the first and repeated measurements, as well es ice thicknesses and derived change in ice thickness, dynamic ice thickness change, basal melt and basal melt rate.

本数据集包含原始数据，以及44次重复相敏雷达（phase-sensitive radar，pRES）点测量得到的拉格朗日基底消融速率。该批测量首次采集于2015年12月/2016年1月，2016年12月在南极洲菲尔希纳冰架完成重复观测。
本次测量共布设为13条横穿冰渠的剖面，每条剖面的不同位置最多可布设5个测量点位，具体点位包括：冰渠西侧外侧（OW）、最陡西侧（SW）冰坡、最低（L）冰面高程点、最陡东侧（SE）冰坡以及冰渠东侧外侧（OE）。
本拉格朗日测量可基于冰内与基底反射波的估算垂直位移，推算基底消融速率。在7个测量点位中，存在多组强基底反射波，因此我们对从首次反射与最强基底回波推导得到的消融速率取平均值。
除原始数据外，本数据集还包含首次与重复测量的坐标、冰厚数据，以及推导得到的冰厚变化量、动态冰厚变化量、基底消融量与基底消融速率。