Room: Exhibit Hall
Date: 4/17/2025
Session Time: 8:00 AM to 5:45 PM (local time)
Macroseismic Intensity: Past, Present and Future
Macroseismic intensity (MI) observations and analyses connect our collective seismological past with the present and the present to the future. MI facilitates estimating earthquake hazards and communicating the effects of ground shaking to a wide variety of audiences, across the ages. Invaluable ground-shaking and building damage information is gained through standardized, systematic approaches for assigning MI values and, importantly, sharing and archiving those assignments in a reproducible form. Traditional macroseismic surveys provide vital constraints on critical aspects of earthquakes and their impacts on society, whereas internet-based macroseismic datasets are extremely valuable for real-time earthquake situational awareness and contribute to subsequent engineering loss and risk analyses. These important applications of MI observations require us to revisit traditional macroseismic surveys for modern environments, standardize internet-based collection strategies, and assure compatibility between traditional and internet-based approaches of macroseismic data collection.
This session aims to connect researchers and practitioners in earthquake seismology, earthquake engineering, and macroseismology. Accordingly, we encourage contributions related to historical and modern MI collection, including internet macroseismology, recent and historical MI analyses, intensity prediction equation and ground-motion conversion equation development, assigning higher intensities with rigorous building damage data collection, and developments related to the International Macroseismic Scale (IMS; a recent update to the European Macroseismic Scale, EMS-98).
Conveners
Ayse Hortacsu, Applied Technology Council (ayse@atcouncil.org)
Susan E. Hough, U.S. Geological Survey (hough@usgs.gov)
Jessie Saunders, Caltech (jsaunder@caltech.edu)
Paola Sbarra, National Institute of Geophysics and Volcanology (paola.sbarra@ingv.it)
David J. Wald, U.S. Geological Survey (wald@usgs.gov)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | WITHDRAWN The Effect of Structural Damage on Shakemap | View |
| Submission | WITHDRAWN Guidelines on Using (Uncertain) Macroseismic Data in ShakeMap | View |
| Submission | Twenty Years of EMS-98 Practice in Italy: A Successful Experience | View |
| Submission | Constraints of the Non-ergodic Path Effects for Short Distances in GMMs using the Modified Mercalli Intensity Data | View |
| Submission | Using “Did You Feel It?” Data to Map Spatially Variable Site Amplification in the Central and Eastern United States: Lessons From the 2024 M 4.8 Tewksbury, New Jersey, Earthquake | View |
| Submission | WITHDRAWN Assignment of Macroseismic Intensity Values in the Field After the 6 February 2023 Kahramanmaraş, Turkey Earthquake Sequence | View |
| Submission | To Intensity and Beyond: On the Limits of the Conventional Macroseismic Intensity Scale | View |
| Submission | A Proposed Canadian National Annex to the International Macroseismic Scale | View |
Macroseismic Intensity: Past, Present and Future [Poster]
Description