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.

该项目的目的是使用整个时间序列的信息来解释时域中诱导的极化。默认情况下，仅使用注射过程中曲线或直接电压下方的区域进行解释。目的是开发一种算法，该算法将整个时间序列倒入地下电导率的3D模型。反演基于Cole-Cole模型或可比模型，例如摘要（2000）。一个近似值用于在时间域中快速，直接计算步骤响应（Hördt等人（2006年），Hönig和Tezkan（2007），Hönig和Tezkan（2007）。首先，瞬态是独立的，以独立于时间通道，以在每种抗性的情况下，可以在每种情况下进行抗性的电阻。倒入一个Cole-Cole模型，该模型包含表征的其他参数。 制成。