Occam1DCSEM_v3.13.zip_反演_大地电磁_matlab例程_数值算法/人工智能下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/6275e020602a7856fe207ead/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6275e020602a7856fe207ead/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">OCCAM1DCSEM:</div><div class="t m0 x2 h3 y2 ff1 fs1 fc0 sc0 ls0 ws0">An Open-Source Inversion Program for Generating Smooth 1D</div><div class="t m0 x3 h3 y3 ff1 fs1 fc0 sc0 ls0 ws0">Models from Controlled-Source Electromagnetic and</div><div class="t m0 x4 h3 y4 ff1 fs1 fc0 sc0 ls0 ws0">Magnetotelluric Data.</div><div class="c x5 y5 w2 h4"><div class="t m0 x6 h5 y6 ff2 fs2 fc0 sc0 ls0 ws0">10</div><div class="t m0 x7 h6 y7 ff3 fs3 fc0 sc0 ls0 ws0">−1</div><div class="t m0 x8 h5 y6 ff2 fs2 fc0 sc0 ls0 ws0">10</div><div class="t m0 x9 h7 y7 ff2 fs3 fc0 sc0 ls0 ws0">0</div><div class="t m0 xa h5 y6 ff2 fs2 fc0 sc0 ls0 ws0">10</div><div class="t m0 xb h7 y7 ff2 fs3 fc0 sc0 ls0 ws0">1</div><div class="t m0 xc h5 y6 ff2 fs2 fc0 sc0 ls0 ws0">10</div><div class="t m0 xd h7 y7 ff2 fs3 fc0 sc0 ls0 ws0">2</div><div class="t m0 xe h5 y8 ff2 fs2 fc0 sc0 ls0 ws0">1</div><div class="t m0 xf h5 y9 ff2 fs2 fc0 sc0 ls0 ws0">1.5</div><div class="t m0 xe h5 ya ff2 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 xf h5 yb ff2 fs2 fc0 sc0 ls0 ws0">2.5</div><div class="t m0 xe h5 yc ff2 fs2 fc0 sc0 ls0 ws0">3</div><div class="t m0 xf h5 yd ff2 fs2 fc0 sc0 ls0 ws0">3.5</div><div class="t m0 xe h5 ye ff2 fs2 fc0 sc0 ls0 ws0">4</div><div class="t m0 xf h5 yf ff2 fs2 fc0 sc0 ls0 ws0">4.5</div><div class="t m0 x10 h8 y10 ff3 fs2 fc0 sc0 ls0 ws0">Resistivity (ohm−m)</div><div class="t m1 x11 h8 y11 ff3 fs2 fc0 sc0 ls0 ws0">Depth (km)</div><div class="t m0 x12 h5 y12 ff2 fs2 fc0 sc0 ls0 ws0">truth</div><div class="t m0 x12 h5 y13 ff2 fs2 fc0 sc0 ls0 ws0">1 Hz</div><div class="t m0 x12 h5 y14 ff2 fs2 fc0 sc0 ls0 ws0">0.1, 1 Hz</div><div class="t m0 x12 h5 y15 ff2 fs2 fc0 sc0 ls0 ws0">0.1, 0.3, 1, 3, 10 Hz</div></div><div class="t m0 x13 h9 y16 ff4 fs4 fc0 sc0 ls0 ws0">Documentation by:</div><div class="t m0 x14 h9 y17 ff4 fs4 fc0 sc0 ls0 ws0">Kerry Key</div><div class="t m0 xc h9 y18 ff4 fs4 fc0 sc0 ls0 ws0">Scripps Institution of Oceanography</div><div class="t m0 x15 h9 y19 ff4 fs4 fc0 sc0 ls0 ws0">University of California, San Diego</div><div class="t m0 x16 h9 y1a ff4 fs4 fc0 sc0 ls0 ws0">A product of the Seaﬂoor Electromagnetic Methods Consortium</div><div class="t m0 x17 h9 y1b ff4 fs4 fc1 sc0 ls0 ws0">http://marineemlab.ucsd.edu/semc.html</div><div class="t m0 x4 h9 y1c ff4 fs4 fc0 sc0 ls0 ws0">Revision 1.5, March 22, 2011.</div><div class="t m0 x18 ha y1d ff5 fs5 fc0 sc0 ls0 ws0">1</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6275e020602a7856fe207ead/bg2.jpg"><div class="t m0 x19 hb y1e ff6 fs6 fc0 sc0 ls0 ws0">Contents</div><div class="t m0 x19 ha y1f ff7 fs5 fc1 sc0 ls0 ws0">1 About 5</div><div class="t m0 x2 ha y20 ff5 fs5 fc1 sc0 ls0 ws0">1.1 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6</div><div class="t m0 x2 ha y21 ff5 fs5 fc1 sc0 ls0 ws0">1.2 License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6</div><div class="t m0 x1a ha y22 ff5 fs5 fc1 sc0 ls0 ws0">1.2.1 Dipole1D.f90 and CSEM1D.f90 . . . . . . . . . . . . . . . . . . . . . . . . . 6</div><div class="t m0 x1a ha y23 ff5 fs5 fc1 sc0 ls0 ws0">1.2.2 Occam.f90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6</div><div class="t m0 x2 ha y24 ff5 fs5 fc1 sc0 ls0 ws0">1.3 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7</div><div class="t m0 x2 ha y25 ff5 fs5 fc1 sc0 ls0 ws0">1.4 Bugs, Fixes, Questions and Comments . . . . . . . . . . . . . . . . . . . . . . . . . . 8</div><div class="t m0 x19 ha y26 ff7 fs5 fc1 sc0 ls0 ws0">2 Compiling the Source Code 8</div><div class="t m0 x19 ha y27 ff7 fs5 fc1 sc0 ls0 ws0">3 Occam’s Inversion Described in a Single Page 9</div><div class="t m0 x19 ha y28 ff7 fs5 fc1 sc0 ls0 ws0">4 Model, Transmitter and Receiver Geometry 10</div><div class="t m0 x2 ha y29 ff5 fs5 fc1 sc0 ls0 ws0">4.1 Transmitter Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11</div><div class="t m0 x2 ha y2a ff5 fs5 fc1 sc0 ls0 ws0">4.2 Receiver Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12</div><div class="t m0 x19 ha y2b ff7 fs5 fc1 sc0 ls0 ws0">5 Input Files Required by OCCAM1DCSEM 14</div><div class="t m0 x2 ha y2c ff5 fs5 fc1 sc0 ls0 ws0">5.1 Iteration File Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15</div><div class="t m0 x1a ha y2d ff5 fs5 fc1 sc0 ls0 ws0">5.1.1 Roughness Type Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15</div><div class="t m0 x1a ha y2e ff5 fs5 fc1 sc0 ls0 ws0">5.1.2 Bounding the model parameters (New March 2011) . . . . . . . . . . . . . . 17</div><div class="t m0 x2 ha y2f ff5 fs5 fc1 sc0 ls0 ws0">5.2 Model File Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18</div><div class="t m0 x2 ha y30 ff5 fs5 fc1 sc0 ls0 ws0">5.3 Data File Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21</div><div class="t m0 x1a ha y31 ff5 fs5 fc1 sc0 ls0 ws0">5.3.1 Phase Convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24</div><div class="t m0 x1a ha y32 ff5 fs5 fc1 sc0 ls0 ws0">5.3.2 Solving For Unknown Receiver Rotations . . . . . . . . . . . . . . . . . . . . 24</div><div class="t m0 x1a ha y33 ff5 fs5 fc1 sc0 ls0 ws0">5.3.3 A Note about 1D Reciprocity . . . . . . . . . . . . . . . . . . . . . . . . . . . 26</div><div class="t m0 x1a ha y34 ff5 fs5 fc1 sc0 ls0 ws0">5.3.4 A Note about Standard Errors . . . . . . . . . . . . . . . . . . . . . . . . . . 26</div><div class="t m0 x19 ha y35 ff7 fs5 fc1 sc0 ls0 ws0">6 Running OCCAM1DCSEM 28</div><div class="t m0 x2 ha y36 ff5 fs5 fc1 sc0 ls0 ws0">6.1 Output Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29</div><div class="t m0 x19 ha y37 ff7 fs5 fc1 sc0 ls0 ws0">7 DIPOLE1D - 1D Forward Modeling 30</div><div class="t m0 x2 ha y38 ff5 fs5 fc1 sc0 ls0 ws0">7.1 Calling DIPOLE1D directly from Matlab . . . . . . . . . . . . . . . . . . . . . . . . 30</div><div class="t m0 x19 ha y39 ff7 fs5 fc1 sc0 ls0 ws0">8 Matlab Editing and Plotting Tools 31</div><div class="t m0 x2 ha y3a ff5 fs5 fc1 sc0 ls0 ws0">8.1 Editing EM Data ﬁles with createEMDataFile.m . . . . . . . . . . . . . . . . . . . . 32</div><div class="t m0 x2 ha y3b ff5 fs5 fc1 sc0 ls0 ws0">8.2 Plotting inversion models with plotOccam1DCSEM.m . . . . . . . . . . . . . . . . . 39</div><div class="t m0 x2 ha y3c ff5 fs5 fc1 sc0 ls0 ws0">8.3 Plotting the behavior of Occam’s inversion with plotOccam1DCSEMIterMisﬁt . . . 41</div><div class="t m0 x2 ha y3d ff5 fs5 fc1 sc0 ls0 ws0">8.4 Plotting data and model responses with plotCSEM.m . . . . . . . . . . . . . . . . . 42</div><div class="t m0 x2 ha y3e ff5 fs5 fc1 sc0 ls0 ws0">8.5 Example Data and Response Plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49</div><div class="t m0 x19 ha y3f ff7 fs5 fc1 sc0 ls0 ws0">9 OCCAM1DCSEM Examples 53</div><div class="t m0 x2 ha y40 ff5 fs5 fc1 sc0 ls0 ws0">9.1 San Diego Trough CSEM Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53</div><div class="t m0 x2 ha y41 ff5 fs5 fc1 sc0 ls0 ws0">9.2 Component Resolution Tests on Synthetic Data . . . . . . . . . . . . . . . . . . . . . 54</div><div class="t m0 x2 ha y42 ff5 fs5 fc1 sc0 ls0 ws0">9.3 Synthetic Data from Thinly Layered Sediments: Smooth and Penalty Cut Inversions 55</div><div class="t m0 x2 ha y43 ff5 fs5 fc1 sc0 ls0 ws0">9.4 Minimum Gradient Support Roughness Penalty Examples . . . . . . . . . . . . . . 56</div><div class="t m0 x18 ha y1d ff5 fs5 fc0 sc0 ls0 ws0">2</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6275e020602a7856fe207ead/bg3.jpg"><div class="t m0 x2 ha y1e ff5 fs5 fc1 sc0 ls0 ws0">9.5 Joint Inversion of CSEM and MT Data . . . . . . . . . . . . . . . . . . . . . . . . . 57</div><div class="t m0 x2 ha y44 ff5 fs5 fc1 sc0 ls0 ws0">9.6 Bounding the Model Parameters During Inversion . . . . . . . . . . . . . . . . . . . 58</div><div class="t m0 x19 ha y20 ff7 fs5 fc1 sc0 ls0 ws0">10 Troubleshooting 59</div><div class="t m0 x2 ha y21 ff5 fs5 fc1 sc0 ls0 ws0">10.1 I removed the roughness penalty on some of the layers and now it won’t converge to</div><div class="t m0 x1a ha y22 ff5 fs5 fc1 sc0 ls0 ws0">a reasonable misﬁt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59</div><div class="t m0 x2 ha y23 ff5 fs5 fc1 sc0 ls0 ws0">10.2 My inversion model looks awful! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59</div><div class="t m0 x18 ha y1d ff5 fs5 fc0 sc0 ls0 ws0">3</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6275e020602a7856fe207ead/bg4.jpg"><div class="t m0 x19 hb y1e ff6 fs6 fc0 sc0 ls0 ws0">List of Figures</div><div class="t m0 x2 ha y45 ff5 fs5 fc1 sc0 ls0 ws0">1 Model geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10</div><div class="t m0 x2 ha y46 ff5 fs5 fc1 sc0 ls0 ws0">2 Transmitter orientation parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11</div><div class="t m0 x2 ha y47 ff5 fs5 fc1 sc0 ls0 ws0">3 Receiver orientation parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12</div><div class="t m0 x2 ha y48 ff5 fs5 fc1 sc0 ls0 ws0">4 Comparison of the exponential transform (red) with the bandpass transform (blue). 18</div><div class="t m0 x2 ha y49 ff5 fs5 fc1 sc0 ls0 ws0">5 Complex data and uncertainty diagram . . . . . . . . . . . . . . . . . . . . . . . . . 27</div><div class="t m0 x2 ha y4a ff5 fs5 fc1 sc0 ls0 ws0">6 createEMDataFile.m Matlab interface . . . . . . . . . . . . . . . . . . . . . . . . . . 32</div><div class="t m0 x2 ha y4b ff5 fs5 fc1 sc0 ls0 ws0">7 Create/Edit Data Mask Figure Example. . . . . . . . . . . . . . . . . . . . . . . . . 35</div><div class="t m0 x2 ha y4c ff5 fs5 fc1 sc0 ls0 ws0">8 Uncertainty Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36</div><div class="t m0 x2 ha y4d ff5 fs5 fc1 sc0 ls0 ws0">9 plotOccam1DCSEM.m examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40</div><div class="t m0 x2 ha y4e ff5 fs5 fc1 sc0 ls0 ws0">10 plotOccam1DCSEMIterMisﬁt.m examples . . . . . . . . . . . . . . . . . . . . . . . . 41</div><div class="t m0 x2 ha y4f ff5 fs5 fc1 sc0 ls0 ws0">11 plotCSEM.m menu ﬁgure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43</div><div class="t m0 x2 ha y50 ff5 fs5 fc1 sc0 ls0 ws0">12 Transmitter selection list dialog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45</div><div class="t m0 x2 ha y51 ff5 fs5 fc1 sc0 ls0 ws0">13 Transmitter and receiver gathers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46</div><div class="t m0 x2 ha y52 ff5 fs5 fc1 sc0 ls0 ws0">14 Mid-point and oﬀset for pseudosection plots. . . . . . . . . . . . . . . . . . . . . . . 46</div><div class="t m0 x2 ha y53 ff5 fs5 fc1 sc0 ls0 ws0">15 Example amplitude and phase plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49</div><div class="t m0 x2 ha y54 ff5 fs5 fc1 sc0 ls0 ws0">16 Example amplitude and phase plot with residuals . . . . . . . . . . . . . . . . . . . . 50</div><div class="t m0 x2 ha y55 ff5 fs5 fc1 sc0 ls0 ws0">17 Example real and imaginary plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51</div><div class="t m0 x2 ha y56 ff5 fs5 fc1 sc0 ls0 ws0">18 Example of coloring plots by ﬁle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52</div><div class="t m0 x2 ha y57 ff5 fs5 fc1 sc0 ls0 ws0">19 San Diego Trough data inversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53</div><div class="t m0 x2 ha y58 ff5 fs5 fc1 sc0 ls0 ws0">20 Synthetic component inversion resolution tests . . . . . . . . . . . . . . . . . . . . . 54</div><div class="t m0 x2 ha y59 ff5 fs5 fc1 sc0 ls0 ws0">21 Synthetic inversions from ﬁne layered models . . . . . . . . . . . . . . . . . . . . . . 55</div><div class="t m0 x2 ha y5a ff5 fs5 fc1 sc0 ls0 ws0">22 Minimum gradient support inversion examples . . . . . . . . . . . . . . . . . . . . . 56</div><div class="t m0 x2 ha y5b ff5 fs5 fc1 sc0 ls0 ws0">23 Joint Inversion of CSEM and MT Data . . . . . . . . . . . . . . . . . . . . . . . . . 57</div><div class="t m0 x2 ha y5c ff5 fs5 fc1 sc0 ls0 ws0">24 Inversion using model bounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58</div><div class="t m0 x19 hb y5d ff6 fs6 fc0 sc0 ls0 ws0">List of Tables</div><div class="t m0 x2 ha y5e ff5 fs5 fc1 sc0 ls0 ws0">1 Roughness Type Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16</div><div class="t m0 x2 ha y5f ff5 fs5 fc1 sc0 ls0 ws0">2 Data types used in format EMData 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . 23</div><div class="t m0 x18 ha y1d ff5 fs5 fc0 sc0 ls0 ws0">4</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a><a 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<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6275e020602a7856fe207ead/bg5.jpg"><div class="t m0 x19 hb y1e ff6 fs6 fc0 sc0 ls0 ws0">1 About</div><div class="t m0 x19 ha y45 ff5 fs5 fc0 sc0 ls0 ws0">This document provides instructions for using the OCCAM1DCSEM inversion code and the for-</div><div class="t m0 x19 ha y60 ff5 fs5 fc0 sc0 ls0 ws0">ward modeling code DIPOLE1D. OCCAM1DCSEM is a Fortran package for generating smooth</div><div class="t m0 x19 ha y61 ff5 fs5 fc0 sc0 ls0 ws0">one-dimensional models from controlled-source electromagnetic and magnetotelluric data. The OC-</div><div class="t m0 x19 ha y62 ff5 fs5 fc0 sc0 ls0 ws0">CAM1DCSEM package is built around a new 1D CSEM forward code named DIPOLE1D, which</div><div class="t m0 x19 ha y63 ff5 fs5 fc0 sc0 ls0 ws0">has been designed to handle a diverse number of 1D CSEM modeling scenarios. This package also</div><div class="t m0 x19 ha y64 ff5 fs5 fc0 sc0 ls0 ws0">comes with Matlab front- and rear-end routines for editing survey data, creating the ﬁles required</div><div class="t m0 x19 ha y65 ff5 fs5 fc0 sc0 ls0 ws0">by OCCAM1DCSEM and for plotting the resulting inversion models and CSEM responses.</div><div class="t m0 x19 ha y66 ff5 fs5 fc0 sc0 ls0 ws0">Here’s a list of features currently supported in OCCAM1DCSEM and DIPOLE1D:</div><div class="t m0 x2 ha y67 ff8 fs5 fc0 sc0 ls0 ws0">• Uses a Cartesian coordinate system, so you don’t need to worry about converting to cylindrical</div><div class="t m0 x1b ha y68 ff5 fs5 fc0 sc0 ls0 ws0">coordinates any more</div><div class="t m0 x2 ha y69 ff8 fs5 fc0 sc0 ls0 ws0">• Models all 3 ﬁeld components (x,y,z) of both the electric and magnetic ﬁelds</div><div class="t m0 x2 ha y6a ff8 fs5 fc0 sc0 ls0 ws0">• Supports inversion of real and imaginary, amplitude and phase, and polarization ellipse data.</div><div class="t m0 x2 ha y6b ff8 fs5 fc0 sc0 ls0 ws0">• Receivers can be located anywhere in the model</div><div class="t m0 x2 ha y6c ff8 fs5 fc0 sc0 ls0 ws0">• Receiver sensor axes can be given a ﬁxed rotation (supports full 3D rotation)</div><div class="t m0 x2 ha y6d ff8 fs5 fc0 sc0 ls0 ws0">• Option to solve for the receiver sensor orientations (supports solving for the full 3D rotation</div><div class="t m0 x1b ha y6e ff5 fs5 fc0 sc0 ls0 ws0">if z component data available)</div><div class="t m0 x2 ha y6f ff8 fs5 fc0 sc0 ls0 ws0">• Transmitters can be located anywhere in the model</div><div class="t m0 x2 ha y70 ff8 fs5 fc0 sc0 ls0 ws0">• Transmitter antenna can be rotated both horizontally and vertically</div><div class="t m0 x2 ha y71 ff8 fs5 fc0 sc0 ls0 ws0">• Model layers are parameterized in absolute depths, not thicknesses</div><div class="t m0 x2 ha y72 ff8 fs5 fc0 sc0 ls0 ws0">• There are no assumptions of ﬁxed layers (you have to input the air and sea layers)</div><div class="t m0 x2 ha y73 ff8 fs5 fc0 sc0 ls0 ws0">• Handles stratiﬁed seawater conductivity layering</div><div class="t m0 x2 ha y74 ff8 fs5 fc0 sc0 ls0 ws0">• Can invert for layer conductivities both above and below the receivers and transmitters.</div><div class="t m0 x2 ha y75 ff8 fs5 fc0 sc0 ls0 ws0">• Includes 1D MT inversion (alone or jointly with CSEM inversion).</div><div class="t m0 x2 ha y76 ff8 fs5 fc0 sc0 ls0 ws0">• Supports point dipoles and ﬁnite length dipoles. new February 2010, thanks to David Myer</div><div class="t m0 x1b ha y77 ffa fs5 fc0 sc0 ls0 ws0">for his help with this.</div><div class="t m0 x2 ha y78 ff8 fs5 fc0 sc0 ls0 ws0">• Supports minimum gradient support roughness penalty (also known as weighted L2 regular-</div><div class="t m0 x1b ha y79 ff5 fs5 fc0 sc0 ls0 ws0">ization). new March 2010.</div><div class="t m0 x2 ha y7a ff8 fs5 fc0 sc0 ls0 ws0">• Supports bounds on model parameters, implemented through non-linear tranforms. new</div><div class="t m0 x1b ha y7b ffa fs5 fc0 sc0 ls0 ws0">March 2011.</div><div class="t m0 x19 ha y7c ff5 fs5 fc0 sc0 ls0 ws0">And here’s a list of current limitations:</div><div class="t m0 x2 ha y7d ff8 fs5 fc0 sc0 ls0 ws0">• Uses a point dipole approximation , see above</div><div class="t m0 x2 ha y7e ff8 fs5 fc0 sc0 ls0 ws0">• Only handles isotropic conductivity</div><div class="t m0 x18 ha y1d ff5 fs5 fc0 sc0 ls0 ws0">5</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>