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  1. /* This file is part of Lemma, a geophysical modelling and inversion API */
  2. /* This Source Code Form is subject to the terms of the Mozilla Public
  3. * License, v. 2.0. If a copy of the MPL was not distributed with this
  4. * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  5. /**
  6. @file
  7. @author Trevor Irons
  8. @date 06/24/2009
  9. @version 0.0
  10. **/
  11. #ifndef __LAYEREDEARTHEM_H
  12. #define __LAYEREDEARTHEM_H
  13. #include "LayeredEarth.h"
  14. namespace Lemma {
  15. // =======================================================================
  16. // Class: LayeredEarthEM
  17. /// \ingroup FDEM1D
  18. /// \brief 1D layered earth. Attributes include all aspects of
  19. /// Cole-Cole model.
  20. /// \details Primarily used for EM calculations.
  21. /** @todo Layer 0 can be set right now, but all logic ignores and assumes
  22. air layer. This is surprising to users and constitutes a bug.
  23. */
  24. // =======================================================================
  25. class LayeredEarthEM : public LayeredEarth {
  26. // ==================== FRIENDS ===========================
  27. /** Recursively streams information about this class */
  28. friend std::ostream &operator<<(std::ostream &stream, const LayeredEarthEM &ob);
  29. public:
  30. // ==================== LIFECYCLE ===========================
  31. /** Default locked constructor. */
  32. explicit LayeredEarthEM ( const ctor_key& );
  33. /** Locked deserializing constructor. */
  34. LayeredEarthEM ( const YAML::Node& node, const ctor_key& );
  35. /** Default destructor */
  36. virtual ~LayeredEarthEM ();
  37. /**
  38. * Factory method for generating concrete class.
  39. * @return a std::shared_ptr of type LayeredEarthEM
  40. */
  41. static std::shared_ptr<LayeredEarthEM> NewSP();
  42. /** YAML Serializing method
  43. */
  44. YAML::Node Serialize() const;
  45. /**
  46. * Constructs an object from a YAML::Node.
  47. */
  48. static std::shared_ptr< LayeredEarthEM > DeSerialize(const YAML::Node& node);
  49. /**
  50. * Constructs an object from a string representation of a YAML::Node. This is primarily
  51. * used in Python wrapping
  52. */
  53. static std::shared_ptr< LayeredEarthEM > DeSerialize( const std::string& node ) {
  54. return LayeredEarthEM::DeSerialize(YAML::Load(node));
  55. }
  56. /** @return a deep copy
  57. */
  58. std::shared_ptr<LayeredEarthEM> Clone();
  59. // ==================== OPERATORS ===========================
  60. // ==================== OPERATIONS ===========================
  61. /** Evaluates the cole-cole model for suceptability and
  62. * permeability.
  63. * @param[in] omega is the frequency in Hz
  64. */
  65. void EvaluateColeColeModel(const Real& omega);
  66. // ==================== ACCESS ===========================
  67. /** Sets the number of layers and resizes all model parameters to
  68. * be the correct size, finally initialises all values to free
  69. * space.
  70. * @param[in] nlay is the number of layers
  71. */
  72. virtual void SetNumberOfLayers(const int& nlay);
  73. /** Sets Complex Conductivity of the layers
  74. * @param[in] sigma is a vector of the conducivity of the layers
  75. */
  76. void SetLayerConductivity(const VectorXcr &sigma);
  77. /** Sets Complex Conductivity of a single layer
  78. * @param[in] sigma is the conducivity of the layer
  79. * @param[in] ilay is the layer index
  80. */
  81. void SetLayerConductivity(const int& ilay, const Complex& sigma);
  82. /* Sets Complex resitivity of the layers
  83. * @param[in] ohm is a vector of the resistivity of the layers
  84. Singularity at 0 resistivity in air. Need to reformaulat things a bit
  85. */
  86. //void SetLayerResistivity(const VectorXcr &ohm);
  87. /** Sets the thickness of the layers
  88. * @param[in] thick is a vector of the thicknesses of the layers.
  89. * Must be two less than the total number of Layers as the top and
  90. * bottom layers are assumed infinite.
  91. */
  92. void SetLayerThickness(const VectorXr &thick);
  93. /** Sets the High frequency susceptibility
  94. */
  95. void SetLayerHighFreqSusceptibility(const VectorXr& sushi);
  96. /** Sets the Low frequency susceptibility
  97. */
  98. void SetLayerLowFreqSusceptibility(const VectorXr& sushi);
  99. /** Sets the Layer breath susceptibility
  100. */
  101. void SetLayerBreathSusceptibility(const VectorXr& susbr);
  102. /** Sets the Layer tau susceptibility
  103. */
  104. void SetLayerTauSusceptibility(const VectorXr& susta);
  105. /** Sets the High frequency permitivity
  106. */
  107. void SetLayerHighFreqPermitivity(const VectorXr& sushi);
  108. /** Sets the Low frequency permitivity
  109. */
  110. void SetLayerLowFreqPermitivity(const VectorXr& sushi);
  111. /** Sets the Layer breath permitivity
  112. */
  113. void SetLayerBreathPermitivity(const VectorXr& oerbr);
  114. /** Sets the Layer breath permitivity
  115. */
  116. void SetLayerTauPermitivity(const VectorXr& oerbr);
  117. // ==================== INQUIRY ===========================
  118. /** Returns the thickness of a layer
  119. @return a VectorXcr of the layer conductivities.
  120. */
  121. VectorXcr GetLayerConductivity( );
  122. /** Returns the conductivity of a layer
  123. * @param[in] ilay is the layer indice of interest
  124. * @return the complex valued conductivity of the layer of
  125. * interest.
  126. */
  127. Complex GetLayerConductivity(const int &ilay);
  128. /** Returns the susceptibility of a layer
  129. * @param[in] ilay is the layer indice of interest.
  130. * @return a Complex value of the electrical susceptibility of the
  131. * probes layer.
  132. */
  133. Complex GetLayerSusceptibility(const int &ilay);
  134. /** Returns the Susceptibility of Cole-Cole model
  135. * @return a VectorXcr of the suceptibilities of the model.
  136. */
  137. VectorXcr GetLayerSusceptibility( );
  138. /** Returns the low freq susceptibility of a layer
  139. */
  140. Real GetLayerLowFreqSusceptibility(const int &ilay);
  141. /** Returns the low freq susceptibility of a layer
  142. */
  143. VectorXr GetLayerLowFreqSusceptibility( );
  144. /** Returns the low freq susceptibility of a layer
  145. */
  146. Real GetLayerHighFreqSusceptibility(const int &ilay);
  147. /** Returns the low freq susceptibility of a layer
  148. */
  149. VectorXr GetLayerHighFreqSusceptibility( );
  150. /** Returns the low freq susceptibility of a layer
  151. */
  152. Real GetLayerTauSusceptibility(const int &ilay);
  153. /** Returns the low freq susceptibility of a layer
  154. */
  155. VectorXr GetLayerTauSusceptibility( );
  156. /** Returns the low freq susceptibility of a layer
  157. */
  158. Real GetLayerBreathSusceptibility(const int &ilay);
  159. /** Returns the low freq susceptibility of a layer
  160. */
  161. VectorXr GetLayerBreathSusceptibility( );
  162. /** Returns the Relative Permitivity of the cole cole model
  163. */
  164. VectorXcr GetLayerPermitivity( );
  165. /** Returns the conductivity of a layer
  166. * @param[in] ilay is the layer indice of interest.
  167. * @return a Complex value of the electrical permitivity of the
  168. * probed layer.
  169. */
  170. Complex GetLayerPermitivity(const int &ilay);
  171. /** Low Freq permivitity
  172. */
  173. VectorXr GetLayerLowFreqPermitivity( );
  174. /** Returns the low freq susceptibility of a layer
  175. */
  176. Real GetLayerLowFreqPermitivity(const int &ilay);
  177. /** Returns the low freq susceptibility of a layer
  178. */
  179. Real GetLayerHighFreqPermitivity(const int &ilay);
  180. /** Returns the low freq susceptibility of a layer
  181. */
  182. VectorXr GetLayerHighFreqPermitivity( );
  183. /** Returns the low freq susceptibility of a layer
  184. */
  185. Real GetLayerTauPermitivity(const int &ilay);
  186. /** Returns the low freq susceptibility of a layer
  187. */
  188. VectorXr GetLayerTauPermitivity( );
  189. /** Returns the low freq susceptibility of a layer
  190. */
  191. Real GetLayerBreathPermitivity(const int &ilay);
  192. /** Returns the low freq susceptibility of a layer
  193. */
  194. VectorXr GetLayerBreathPermitivity( );
  195. /** Returns the name of the underlying class, similiar to Python's type */
  196. virtual std::string GetName() const ;
  197. protected:
  198. private:
  199. // ==================== DATA MEMBERS ===========================
  200. /** Vector of layer Conductivity */
  201. VectorXcr LayerConductivity;
  202. /** Vector of layer Susceptibility (chi)
  203. * This is calculated using the Cole-Cole model
  204. * \f[ sus(i) = sush(i)
  205. * + \frac{(susl(i)-sush(i))} {(1+(jw * sustau(i))^{susalp(i)})} \f]
  206. */
  207. VectorXcr LayerSusceptibility;
  208. /** Vector of low frequency susceptibility, for use in Cole-Cole
  209. model */
  210. VectorXr LayerLowFreqSusceptibility;
  211. /** Vector of high frequency susceptibility, for use in Cole-Cole
  212. model */
  213. VectorXr LayerHighFreqSusceptibility;
  214. /** Vector of relaxation time constants, for use in Cole-Cole model
  215. */
  216. VectorXr LayerTauSusceptibility;
  217. /** Vector relaxation breath, for use in Cole-Cole model
  218. */
  219. VectorXr LayerBreathSusceptibility;
  220. /** Vector of Layer Permitivity (epsilon)
  221. * Calculated using the Cole-Cole model
  222. * \f[ epr(i) = eprh(i)
  223. * + \frac{ (eprl(i)-eprh(i))} { (1+(jw*eprtau(i))^{epralp(i)})} \f]
  224. */
  225. VectorXcr LayerPermitivity;
  226. /** Low frequency permitivity for each layer */
  227. VectorXr LayerLowFreqPermitivity;
  228. /** High frequency permitivity for each layer */
  229. VectorXr LayerHighFreqPermitivity;
  230. /** Decay time constant for each layer */
  231. VectorXr LayerTauPermitivity;
  232. /** Relaxation breath for each layer */
  233. VectorXr LayerBreathPermitivity;
  234. /** ASCII string representation of the class name */
  235. static constexpr auto CName = "LayeredEarthEM";
  236. }; // ----- end of class LayeredEarthEM -----
  237. } // namespace Lemma
  238. #endif // __LAYEREDEARTHEM_H
  239. /* vim: set tabstop=4 expandtab: */
  240. /* vim: set filetype=cpp: */