← Back to Sessions

Current State of Paleoearthquake Data for the Alaska Range

Description: 

Extending over 600 km in a broad arc across southern Alaska, the Alaska Range is an active orogen containing numerous Quaternary-active faults - but only a limited paleoseismic record. Furthermore, a majority of the paleoseismic data from the Alaska Range is currently either unpublished or only found in graduate theses and in project reports. We compile the accessible paleoseismic results from the active faults of the Alaska Range to accomplish the following goals: 1) formally publish paleoseismic information that is currently in ‘gray’ literature sources, 2) attempt to access and publish previously unpublished paleoseismic information, 3) consolidate paleoearthquake dates into a single source with a consistent format to facilitate potential analysis of along-fault and fault system earthquake behavior, 4) solicit community input on additional data sources and, 5) identify high-priority targets for future research. We also identify new constraints on fault location, geometry, and slip sense for several faults derived from fieldwork and remote observations using the continually-expanding coverage of high-resolution satellite imagery and topographic data. Formal publication of this paleoearthquake information will permit inclusion of this data in USGS hazard products and support regional paleoseismic and tectonic studies.

Session: Compiling Active Faults for Improved Hazard Modeling from Cascadia to Alaska - I

Type: Oral

Date: 4/17/2025

Presentation Time: 04:45 PM (local time)

Presenting Author: Sean

Student Presenter: No

Invited Presentation: 

Poster Number:

Authors