{
  "id": 4777131,
  "title": "New Underground Map of the Los Angeles Region Tracks Seismic Shaking",
  "url": "https://urgent.news/2026/09/01/new-underground-map-of-the-los-angeles-region-tracks-seismic-shaking",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-01T03:06:50.000Z",
  "source": {
    "name": "Caltech News",
    "slug": "caltech-news",
    "url": "https://www.caltech.edu/about/news/new-underground-map-of-the-los-angeles-region-tracks-seismic-shaking"
  },
  "original_language": "en",
  "account": null,
  "summary": "In computer simulations of The Big One—a large magnitude earthquake that may occur along the San Andreas Fault in California—seismic waves ripple from a magnitude 7.8 epicenter near the Salton Sea up into the Los Angeles Basin. For minutes in this simulation, the ground beneath downtown Los Angeles shakes like Jell-O because the region is built upon a deep basin of soft sediments, which can…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}