120 Land Surface Subsidence: Processes, Impacts, and Ongoing Challenges

This session explores the diverse causes, impacts, and monitoring of land subsidence, including the relationship with sea-level rise, to advance subsidence understanding and mitigation strategies.

Monday, 20 October 2025
1:30 PM - 5:30 PM
HBGCC, 210AB

Participants

• Chair John Ellis
• Chair James W. Borchers

Presentations

• 1:35 PM
  Subsidence Around the World 2023–25
  James Borchers, Consultant, Davis, California
  412737 (Technical Sessions)
• 1:50 PM
  Using InSAR to analyze subsidence and sinkage in the Blue & White Golf Course
  Maximiliano Marquez, University of Texas at El Paso, El Paso, TX and Rebecca Bussard, Pennsylvania State University, State College, Pennsylvania and Rachel Housego, Pennsylvania State University, State College, Pennsylvania and Christelle Wauthier, Pennsylvania State University, State College, Pennsylvania
  414913 (Technical Sessions)
• 2:05 PM
  Assessing the Impact of Coastal Subsidence on Tsunami Hazards Along the U.S. West Coast using Sentinel-1 InSAR and Numerical Modeling
  Aparna Raman, Texas Tech University, Lubbock, Texas and Jay Tung, Texas Tech University, Lubbock, Texas
  412624 (Technical Sessions)
• 2:20 PM
  Recharged but Not Recovered: InSAR Observations of Persistent Land Subsidence in Arizona’s Willcox Basin
  Danielle Smilovsky, Texas A&M - Corpus Christi, Corpus Christi, Texas
  414189 (Technical Sessions)
• 3:00 PM
  Sinking Ground, Rising Concerns—A Century of Land Subsidence in California
  Marisa Earll, INTERA Incorporated, San Diego, California and John Ellis, INTERA Incorporated, Austin, Texas and Leila Saberi, INTERA Incorporated, Austin, Texas and Wesley Neely, INTERA Incorporated, San Diego, California
  413529 (Technical Sessions)
• 3:15 PM
  From Data to Decision: Predicting Future Subsidence Under Varying Management Strategies
  Nathan Hatch, INTERA, Torrance, CA and Leila Saberi, INTERA, Chicago, IL and John Ellis, INTERA, Houston, TX and Jeremy White, INTERA, Fort Collins, CO and Marisa Earll, INTERA, San Diego, CA
  412460 (Technical Sessions)
• 3:30 PM
  Land subsidence modeling in the Central Valley of California: are complex models always needed?
  Joseph Hughes, INTERA Incorporated, Chicago, IL and Jeremy White, INTERA Incorporated, Ft. Collins, CO and Leila Saberi, INTERA Incorporated, Chicago, IL and John Ellis, INTERA, Houston, TX
  413595 (Technical Sessions)
• 3:45 PM
  From Flood Risk to Financial Losses: An Evaluation of Inland Subsidence Impacts in the Spring Creek Watershed, Southeast Texas
  Ashley Greuter, Harris-Galveston Subsidence District, Friendswood, TX and Mohamed Bagha, Michael Baker International, Katy, TX and Manoj Kc, Michael Baker International, Katy, TX and Michael Turco, Harris-Galveston Subsidence District, Friendswood, TX and Chris Canonico, Harris-Galveston Subsidence District, Friendswood, TX and Alan Petrov, Harris-Galveston Subsidence District, Friendswood, TX
  412252 (Technical Sessions)
• 4:05 PM
  Evaluating the Causes of Land Subsidence in Texas's Gulf Coast and Turkey's Hatay Region
  Shuhab Khan, University of Houston, Houston, TX and Muhammad Younas, University of Houston, Houston, TX and Sukru Karacca, University Of Houston, Houston, TX
  412563 (Technical Sessions)