---
tags:
- geophysics
size_categories:
- 10K<n<100K
---
<table>
  <caption>SeisMIC-Init modalities and grids.</caption>
  <thead>
    <tr>
      <th>Modality</th>
      <th>Symbol</th>
      <th>Domain</th>
      <th>Shape (C,H,W)</th>
      <th>Sampling / Extent</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Depth velocity</td>
      <td>V(z,x)</td>
      <td rowspan="3">depth</td>
      <td rowspan="3">(1,70,70)</td>
      <td rowspan="3">dz=dx=10 m;<br>700×700 m</td>
    </tr>
    <tr>
      <td>Horizon</td>
      <td>H(z,x)</td>
      <!-- 合并单元格后此处留空 -->
    </tr>
    <tr>
      <td>Well log stripes</td>
      <td>W(z,x)</td>
      <!-- 合并单元格后此处留空 -->
    </tr>
    <tr>
      <td>RMS velocity</td>
      <td>v_rms(t,x)</td>
      <td rowspan="2">time (TWT)</td>
      <td rowspan="3">(1,1000,70)</td>
      <td rowspan="2">dt=1 ms;<br>dx=10 m;<br>TWT=1.0 s</td>
    </tr>
    <tr>
      <td>PSTM</td>
      <td>M(t,x)</td>
      <!-- 合并单元格后此处留空 -->
    </tr>
  </tbody>
</table>