Room: Ballroom
Date: 4/19/2023
Session Time: 8:00 AM to 5:45 PM (local time)
Subduction Zone Structure From Trench to Arc
Subduction zones are dynamic tectonic environments that generate destructive natural hazards, produce large orogenic systems, create and modify continental crust, recycle volatiles and sediments into the interior and drive mantle convection. Many of these processes occur at depths of < 120 km, roughly from the oceanic trench to the magmatic arc - a key focus area of the broader Earth Science community as evidenced by community-driven programs such as EarthScope, GeoPRISMS and SZ4D. Our understanding of these processes is predicated on direct observations through increasingly more refined and comprehensive seismic images of the incoming plate, the downgoing slab, the mantle wedge and the overriding plate, which we can use to infer subsurface properties such as rock composition, in situ melt percentage and water content. For this session, we invite contributions from the broadly defined seismic imaging community at the basin scale to the crustal and mantle scale. Seismic imaging techniques can include, but are not limited to tomographic techniques, including refraction, surface wave, teleseismic, full waveform and adjoint tomography, as well as active source reflection imaging, distributed acoustic sensing, noise interferometry, attenuation studies, and scattered wave imaging. In particular, we invite contributions that integrate across scales and across shorelines, jointly interpret multiple techniques and/or focus on improving our interpretation of seismic wavespeeds in the crust and mantle to better understand tectonic processes and geologic structures in subduction zone settings.
Conveners
Daniel E. Portner, Arizona State University (dportner@asu.edu)
Jonathan R. Delph, Purdue University (jdelph@purdue.edu)
Harm Van Avendonk, University of Texas at Austin (harm@ig.utexas.edu)
Lindsay L. Worthington, University of New Mexico (lworthington@unm.edu)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Subduction Segmentation Revealed by Full-Wave Ambient Noise Tomography of the Aacse Data | View |
| Submission | Investigating Plate Interface Structure and Potential Splay Fault Geometry in the Southern Mw 9.2 1964 Great Alaska Earthquake Rupture Area Using a Dense Node Array | View |
| Submission | Along-Strike Variations in Sub-Arc Melting Beneath the Alaska Peninsula | View |
| Submission | Earthquake clustering and statistics at the Alaska Peninsula | View |
| Submission | Receiver Function Imaging of the Complex Plumbing System Feeding Mount St. Helens, Washington | View |
| Submission | Seismic Images of the Crustal Structure Beneath Cordillera Central and Cordillera Oriental, Dominican Republic | View |
| Submission | The HIPER Project: An International Collaboration on the Ecuadorian Margin | View |
| Submission | Imaging the Marine Forearc Structure of the 2014 Iquique Earthquake Rupture Area Using Passive and Active Sources | View |
| Submission | Seismological and Geodetic Investigations in the Atacama Region of Chile: Investigations of Links Between Plate Interface and Intermediate Depth Processes | View |
| Submission | Seismic Attenuation Imaging in the Central Andes Using Local and Teleseismic Earthquake Spectra: Insights Into Fluid Migration in the South Amerian Lithosphere Above the Pampean Flat Slab | View |
| Submission | Mantle Deformation in a Young Mountain Belt: Insights From Shear Wave Splitting in the Greater Caucasus | View |
Subduction Zone Structure From Trench to Arc [Poster]
Description