Room: Exhibit Hall
Date: 5/1/2024
Session Time: 8:00 AM to 5:45 PM (local time)
Strong ground motion and surface deformation caused by slip on plate boundary, intraslab and crustal faults perturb surficial processes and leave geologic evidence in terrestrial and subaqueous environments. This two-part session explores paleoseismic approaches that use geologic evidence to reconstruct records of past earthquakes. Part one will address earthquake evidence in terrestrial settings. This evidence may be produced by coastal, fluvial and colluvial processes that together shape the ultimate sedimentary and geomorphic response to tectonic surface deformation. Presentations also may focus on ground failure and landslides triggered by earthquake shaking. Part two will feature subaqueous lake bottom and seafloor imprints and processes triggered by earthquakes. These earthquake-triggered responses are governed by the properties of the passing seismic waves (frequency, amplitude, duration) and the geomechanics of the substrate (grain size, composition, shear strength). Presentations may focus on the array of subaqueous sedimentary responses to strong ground motion, including different styles of mass failure, surficial sediment remobilization, soft sediment deformation and/or seismic strengthening.
We invite presentations from Alaska and beyond that highlight paleoseismic records from all depositional environments, laboratory analyses, modeling studies, or syntheses and comparisons of global records. We particularly encourage presentations of: 1) Novel techniques using geophysical survey tools, sediment sampling analyses and remote sensing techniques to quantify tectonic deformation; 2) Studies with high geochronological precision, beyond the limitations of typical radiometric dating; 3) Studies that compare paleoseismic records from adjoining subaqueous and terrestrial environments, pointing out the promises and pitfalls of different approaches; and 4) Experiments that simulate the array of surficial processes that form geologic evidence of earthquakes.
Conveners:
Danny Brothers, U.S. Geological Survey (dbrothers@usgs.gov)
Tina Dura, Virginia Polytechnic Institute and State University (tinadura@vt.edu)
Jenna Hill, U.S. Geological Survey (jhill@usgs.gov)
Kristin Morell, University of California, Santa Barbara (kmorell@ucsb.edu)
Belle Philibosian, U.S. Geological Survey (bphilibosian@usgs.gov)
Derek Sawyer, Ohio State University (sawyer.144@osu.edu)
Drake Singleton, U.S. Geological Survey (dsingleton@usgs.gov)
Katleen Wils, University of Innsbruck (katleen.wils@uibk.ac.at)
Rob Witter, U.S. Geological Survey (rwitter@usgs.gov)
Mark Zellman, BGC Engineering (mzellman@bgcengineering.ca)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Ground Surface Rupture Complexity on the Northern Alpine Fault, Aotearoa New Zealand | View |
| Submission | Urban Paleoseismology of the Taylorsville Fault - New Data and Challenges from one of the Last Remaining Trench Sites on the West Valley Fault Zone, Utah | View |
| Submission | Middle to Late Pleistocene Faulting on the Puye Fault Zone, Española Basin, New Mexico | View |
| Submission | Possible Quaternary Faulting on the Picuris-Pecos Fault on the Eastern Margin of the Española Basin, New Mexico | View |
| Submission | Evidence of Past Earthquakes Preserved in Coast Redwood Trees Along the Northern San Andreas Fault | View |
| Submission | Using Modern Fires to Estimate Charcoal Age Inheritance at Paleoseismic Sites in California | View |
| Submission | A Refined Chronology of Tsunami Deposition at Discovery Bay, Washington State | View |
| Submission | Detection Thresholds for Large to Great Subduction Earthquakes in South-Central Alaskan Marshes | View |
| Submission | Temporal Clues Point to an Along-Strike Cascadia Megathrust Rupture Sequence Between 680–950 Years Ago | View |
| Submission | Introducing the Science Goals for the Cascadia Region Earthquake Science Center (Crescent) Cascadia Paleoseismology Working Group (Cpal) | View |
| Submission | Cataloging the Date of Last Event (DOLE) Across the Western U.S. | View |
| Submission | Refined Timing and Estimates of Coseismic Subsidence at the Southern Cascadia Subduction Zone: Combining Modern Dendrochronology, Age Modeling, and Relative Sea-level Reconstruction Techniques in the Eel River Valley, CA | View |
| Submission | Geotechnical Properties of Quaternary Marine Sediments of the Eel River Plateau, Southern Cascadia Margin | View |
| Submission | Tectonic Oversteepening, Sediment Accretion, and Lower Slope Failure in the Cascadia Subduction Zone – A Recipe for Abyssal Seismoturbidites and Insights Into Earthquake History | View |
| Submission | Marine Seismoturbidites in the Cascadia Subduction Zone: Filling the Gaps and Refining the Offshore Records of Earthquake Shaking | View |
| Submission | A Comparative Study of Earthquake Ground-Shaking Site Effects From Lacustrine Sediments in a Subduction Zone Setting Using Active and Passive Seismic Methods | View |
| Submission | Chirp Correlation and Acoustic Characterization of Lacustrine Turbidite Deposits in Lake Ozette, Wa Using Ct-Derived Density, Synthetic Seismograms, and Advanced Chirp Processing | View |
| Submission | How Do Large Lakes in the Seattle Area Respond to Different Sources of Seismic Shaking? Revisiting Lake Washington and Lake Sammamish With New High-Resolution Data | View |
| Submission | Lacustrine Paleoseismic Investigation in the South Washington Cascade Range: Geophysical and Sedimentological Observations From Keechelus, Kachess, and Cle Elum Lakes | View |
| Submission | Comprehensive High-Resolution Geophysical Mapping and Sediment Coring in Lake Chelan, Wa: A Deep, Steep Lacustrine Environment Dominated by Mass Transport Processes | View |
| Submission | Lacustrine Paleoseismic Evidence From Two Large Lakes in Cascadia: Preliminary Comparisons of Post-Glacial Sediment Records From Ozette and Whatcom Lakes, Washington | View |
| Submission | Earthquake–triggered Submarine Landslides in Kachemak Bay, Alaska: New Constrains on Distribution and Timing Based on Marine Geophysical and Geological Data | View |
| Submission | Off the Beaten Path: Preliminary Results of Reconnaissance Paleoseismic Surveys in Remote Alaskan Lakes | View |
| Submission | Reconnaissance Implies a Potentially Complete Record of Holocene Earthquakes in Esther Lake Above the Alaska-Aleutian Megathrust | View |
| Submission | Variations of the 1959 m7.3 Hebgen Lake Earthquake Record in Four Proximal Lacustrine Systems, West Yellowstone Region, USA | View |
From Faults to Fjords: Earthquake Evidence in Terrestrial and Subaqueous Environments [Poster Session]
Description