{
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  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from geoscilabs.dcip.CondUtils import ColeColePelton, vizColeCole\n",
    "from geoscilabs.dcip.FreqtoTime import transFilt\n",
    "import matplotlib\n",
    "from ipywidgets import interact, FloatText, FloatSlider, ToggleButtons"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "matplotlib.rcParams['font.size'] = 16"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Complex conductivity and resistivity"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Purpose\n",
    "\n",
    "Using a simple Cole-Cole model, we parameterize complex resistivity with four parameters: resistivity at zero frequency ($\\rho_0$), chargeability($\\eta$), time constant ($\\tau$), and frequency dependence ($c$). Based upon those parameters, we understand how resistivity and conductivity changes when medium is chargeable both in frequency domain and time domain."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Set up\n",
    "\n",
    "Pelton's Cole-Cole model for resistivity and conductivity can be written as \n",
    "\n",
    "$$ \\rho(\\omega) = \\rho_0 \\Big[1 - \\eta \\Big(1-\\frac{1}{1+(\\imath\\omega\\tau)^c}\\Big) \\Big] $$\n",
    "\n",
    "and\n",
    "\n",
    "$$ \\sigma(\\omega) = \\sigma_{\\infty}\\Big(1-\\frac{\\eta}{1+(1-\\eta)(\\imath\\omega\\tau)^c} \\Big) $$\n",
    "\n",
    "respectively. "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Cole-Cole app\n",
    "\n",
    "## Parameters\n",
    "\n",
    "- $\\sigma_1$: Conductivity of the first layer (S/m)\n",
    "\n",
    "- $\\sigma_2$: Conductivity of the first layer (S/m)\n",
    "\n",
    "- $f$ (Hz): Frequency (Hz)\n",
    "\n",
    "- Type: \n",
    "\n",
    "    - Reflection: Transmission power as a function of incident angle    \n",
    "    - Transmission: Transmission power as a function of incident angle    \n",
    "    - Angle: relationship between $\\theta_i$ and $\\theta_t$"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "interact(vizColeCole, eta=FloatSlider(min=0.1, max=0.5, step=0.05, value=0.4), \n",
    "         tau=FloatText(value=0.1), \n",
    "         c=FloatSlider(min=0.1, max=1., step=0.1, value=0.5), \n",
    "         sigres = ToggleButtons(options=['sigma','resis']), \n",
    "         t1=FloatText(value=800), \n",
    "         t2=FloatText(value=1400),          \n",
    "        );"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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