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科学领域:

  • 水文地质学 水文地质学
  • 地质物理学 地质物理学
  • 环境科学 环境科学

背景情况:

  • 过渡式液压断层扫描 (THT) 有效地描述了地下液压和储存性能.
  • 顺序逆转THT在计算上是高效的,但准确性取决于抽取数据集的选择和顺序.
  • 传统的信号噪声比 (SNR) 方法用于数据集选择,往往忽略了关键信息内容.

研究的目的:

  • 根据信息内容,开发和评估一种替代策略,根据THT序列倒置对数据集进行排名.
  • 通过优先考虑信息数据来提高THT反转的准确性和计算效率.

主要方法:

  • 使用非参数格林格尔顿绘图位置来生成暂时数据集的累积分布函数 (CDF).
  • 使用Kullback-Leibler分歧 (KLD) 来量化数据变化,并根据信息内容对送端口进行排名.
  • 使用实验室沙箱模型测试了该方法,将离散波纹转换 (DWT) 应用到 denoising 和 PEST 与 MODFLOW 结合用于反转.

主要成果:

  • 与SNR辅助的反转 (RMSE = 1.075 ± 0.990厘米) 相比,KLD辅助的反转显示出更高的精度 (RMSE = 0.278 ± 0.177厘米).
  • 应用KLD值 (>10) 将THT数据减少68%,计算时间减少64%,准确度相似 (RMSE = 0.265 ± 0.121厘米).

结论:

  • 使用KLD进行信息驱动的数据集选择显著提高了THT序列反转的性能.
  • 提出的方法为传统的以质量为导向的方法提供了更准确,更高效的计算替代方案,即使数据减少.
  • 这种方法对于各种环境中的水文地质学特征有价值.