• Analysis of numerical differen...

Treffer: Analysis of numerical differentiation methods applied to time domain electromagnetic (TDEM) geophysical data in the S-layer differential transform

Title:
Analysis of numerical differentiation methods applied to time domain electromagnetic (TDEM) geophysical data in the S-layer differential transform
Authors:
Combrinck, M.
Publisher Information:
Elsevier
Publication Year:
2009
Collection:
University of Pretoria: UPSpace
Subject Terms:
S-layer differential transform, Time domain electromagnetic (TDEM), Optional smoothing of data, Optional resampling of data, Equally spaced intervals, Numerical differentiation, Time-domain analysis, Geophysics -- Data processing
Document Type:
Fachzeitschrift article in journal/newspaper
File Description:
application/pdf
Language:
English
Relation:
http://hdl.handle.net/2263/11301
DOI:
10.1016/j.cageo.2008.08.016
Availability:
http://hdl.handle.net/2263/11301
https://doi.org/10.1016/j.cageo.2008.08.016
Rights:
Elsevier
Accession Number:
edsbas.F0F835C
Database:
BASE

Weitere Informationen

The S-layer differential transform produces subsurface conductivity-depth images from Time Domain Electromagnetic (TDEM) data. It is a very fast method, but suffers from high noise levels due to the implementation of two consecutive numerical differentiations that are performed in the algorithm. In this paper, twelve numerical differentiation strategies are compared in order to find the most efficient differentiation scheme, specifically for TDEM data and the S-layer differential transform. The twelve strategies are made up through combinations for three differentiation methods, optional smoothing of data and optional resampling of data to equally spaced intervals. Comparisons are made on analytical, synthetic and field data.