{
  "id": 579965,
  "title": "Seismic source function",
  "url": "/competitions/waveform-inversion/discussion/579965",
  "author_name": "",
  "post_date": "2025-05-21T13:00:34.090712400Z",
  "votes": 2,
  "comment_count": 1,
  "views": 0,
  "content": "<p>In the waveform-inversion Kaggle competition tutorial, it mentioned 'we assume the source function is known.'<br>\n<img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F12703761%2F4a915bd67a3fb4388e411a1998d5bb46%2Fgoverning_eqn.png?generation=1747832013686649&amp;alt=media\" alt=\"\"></p>\n<p>However, I couldn't find the exact form of the source function in the tutorial. I also went through two papers about InversionNet and VelocityGAN, but still not. Could you specify the source term? And does it change with different dataset?</p>\n<p>Thank you,<br>\nQifeng</p>",
  "messages": [
    {
      "id": "3206530",
      "postDate": "05/21/2025 13:00:34",
      "content": "<p>In the waveform-inversion Kaggle competition tutorial, it mentioned 'we assume the source function is known.'<br>\n<img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F12703761%2F4a915bd67a3fb4388e411a1998d5bb46%2Fgoverning_eqn.png?generation=1747832013686649&amp;alt=media\" alt=\"\"></p>\n<p>However, I couldn't find the exact form of the source function in the tutorial. I also went through two papers about InversionNet and VelocityGAN, but still not. Could you specify the source term? And does it change with different dataset?</p>\n<p>Thank you,<br>\nQifeng</p>",
      "rawMarkdown": "In the waveform-inversion Kaggle competition tutorial, it mentioned 'we assume the source function is known.'\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F12703761%2F4a915bd67a3fb4388e411a1998d5bb46%2Fgoverning_eqn.png?generation=1747832013686649&alt=media)\n\nHowever, I couldn't find the exact form of the source function in the tutorial. I also went through two papers about InversionNet and VelocityGAN, but still not. Could you specify the source term? And does it change with different dataset?\n\nThank you,\nQifeng",
      "votes": null
    },
    {
      "id": "3206568",
      "postDate": "05/21/2025 14:14:40",
      "content": "<p>They use a Ricker wavelet: <a href=\"https://en.wikipedia.org/wiki/Ricker_wavelet\" target=\"_blank\">https://en.wikipedia.org/wiki/Ricker_wavelet</a></p>",
      "rawMarkdown": "They use a Ricker wavelet: https://en.wikipedia.org/wiki/Ricker_wavelet",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 3206568,
      "author_name": "hoffmanns",
      "author_url": "",
      "post_date": "05/21/2025 14:14:40",
      "content": "<p>They use a Ricker wavelet: <a href=\"https://en.wikipedia.org/wiki/Ricker_wavelet\" target=\"_blank\">https://en.wikipedia.org/wiki/Ricker_wavelet</a></p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "3206530": "In the waveform-inversion Kaggle competition tutorial, it mentioned 'we assume the source function is known.'\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F12703761%2F4a915bd67a3fb4388e411a1998d5bb46%2Fgoverning_eqn.png?generation=1747832013686649&alt=media)\n\nHowever, I couldn't find the exact form of the source function in the tutorial. I also went through two papers about InversionNet and VelocityGAN, but still not. Could you specify the source term? And does it change with different dataset?\n\nThank you,\nQifeng",
    "3206568": "They use a Ricker wavelet: https://en.wikipedia.org/wiki/Ricker_wavelet"
  },
  "source": "meta"
}