Development and application of a new inversion algorithm for the time domain induced polarisation data in three dimensions

三维时域激发极化数据反演新算法的开发与应用

• 批准号: 156800985
• 负责人: Professor Dr. Bülent Tezkan
• 金额: --
• 依托单位: Arbeitsgruppe Angewandte Geophysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/156800985?language=en
• 关键词: Development; application; new; inversion; algorithm

The goal of this project is to use the information of the entire time series for the interpretation of the induced polarization in time domain. By default, only the area below the curve or the voltage during and directly after injection are used for interpretation.The aim is to develop an algorithm which inverts entire time series into a 3D model of the conductivity of the subsurface. The inversion is based on the Cole-Cole model or comparable models e.g. from Dias (2000).An approximation is used to calculate the step response fast and directly in the time domain (Hördt et al. (2006), Hönig and Tezkan (2007)). First, the transients are inverted independently for separate time channels into a subsurface conductivity model with a 3D DC resistivity code. Thus, a time-dependent resistivity for each cell of the model is obtained. The time-dependent resistivity can then be inverted into a Cole-Cole model which contains additional parameters for the characterization of the subsurface. The use of the entire time series requires a high standard of data quality and a large measuring effort. The data measured with the Terrameter LS during the first phase of the project satisfy these requirements and will be modeled with the above-described algorithm. .If frequency domain and time domain measurements are available for the same profiles, a comparison between them will also be made.

轮胎轮胎系列的诱导极化仅在时间域中的偏振量。 odel或可比较的模型，例如，使用近似值，将步骤响应迅速地和时间域（2006年）时间依赖性的时间依赖性电阻率可以使cole-cole模型在整个时间序列的使用方面构成了additional参数用地形计测量的数据将以上述算法进行建模。如果频域和时域测量值可用于相同的概要文件，则将进行比较，进行比较。