Lesparre Nolwenn, Girard Jean-François, Jeannot Benjamin, Weill Sylvain, Dumont Marc, Boucher Marie, Viville Daniel, Pierret Marie-Claire, Legchenko Anatoly, Delay Frederick
Université de Strasbourg, CNRS, EOST, LHYGES UMR 7517, F-67000 Strasbourg, France.
Université de Strasbourg, CNRS, EOST, IPGS UMR 7516, F-67000 Strasbourg, France.
Data Brief. 2020 May 16;31:105708. doi: 10.1016/j.dib.2020.105708. eCollection 2020 Aug.
Magnetic Resonance Sounding (MRS) measurements are acquired at 16 stations in the Strengbach headwater catchment (Vosges Mountains - France). These data, rendering the vertical distribution of water contents in the subsurface, are used to show their potential in conditioning a hydrological model of the catchment, as described in the article "Magnetic resonance sounding measurements as posterior information to condition hydrological model parameters: Application to a hard-rock headwater catchment" - Journal of Hydrology (2020). Acquisition protocols follow a free induction decay scheme. Data are filtered by applying a band-pass filter at the Larmor frequency. A filter removing the 50 Hz noise is also applied with the exception of data at a Larmor frequency close to the 50 Hz harmonic. The signal envelopes are then fitted by a decaying exponential function over time to estimate the median characteristic relaxation time of each MRS sounding.
在斯特伦巴赫河源集水区(法国孚日山脉)的16个站点进行了磁共振测深(MRS)测量。这些数据反映了地下含水量的垂直分布,如《磁共振测深测量作为水文模型参数调节的后验信息:应用于硬岩河源集水区》一文所述,用于展示其在调节集水区水文模型方面的潜力。该文章发表于《水文杂志》(2020年)。采集协议遵循自由感应衰减方案。通过在拉莫尔频率处应用带通滤波器对数据进行滤波。除了拉莫尔频率接近50Hz谐波的数据外,还应用了一个去除50Hz噪声的滤波器。然后,通过随时间的衰减指数函数对信号包络进行拟合,以估计每个MRS测深的中值特征弛豫时间。