Search Results - "Portner, Daniel Evan"

The nature of subslab slow velocity anomalies beneath South America by Portner, Daniel Evan, Beck, Susan, Zandt, George, Scire, Alissa

“…Slow seismic velocity anomalies are commonly imaged beneath subducting slabs in tomographic studies, yet a unifying explanation for their distribution has not…”
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Incorporating teleseismic tomography data into models of upper mantle slab geometry by Portner, Daniel Evan, Hayes, Gavin P

“…SUMMARY Earthquake-based models of slab geometry are limited by the distribution of earthquakes within a subducting slab, which is often heterogeneous. The…”
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Ps‐P Tomography of a Midcrustal Magma Reservoir Beneath Cleveland Volcano, Alaska by Portner, Daniel Evan, Wagner, Lara S., Janiszewski, Helen A., Roman, Diana C., Power, John A.

“…Seismic tomography of the crust is an essential tool for studying the three‐dimensional structure of magmatic plumbing systems feeding active volcanoes, but it…”
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Subduction termination through progressive slab deformation across eastern Mediterranean subduction zones from updated P-wave tomography beneath Anatolia by Portner, Daniel Evan, Delph, Jonathan R, Biryol, C. Berk, Beck, Susan L, Zandt, George, Ozacar, A. Arda, Sandvol, Eric, Turkelli, Niyazi

“…Using finite-frequency teleseismic P-wave tomography, we developed a new three-dimensional (3-D) velocity model of the mantle beneath Anatolia down to 900 km…”
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Validation of Ps‐P Tomography for Obtaining 3D Crustal V P /V S With Small‐ N Data Sets: An Application to the Mount St. Helens Magmatic System by Portner, Daniel Evan, Delph, Jonathan R., Kiser, Eric, Abers, Geoffrey A., Levander, Alan, Pang, Guanning

“…Abstract The high sensitivity of V P /V S to the presence of melt makes images of V P /V S structure particularly useful in magmatic systems, but detailed…”
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Mantle dynamics of the Andean Subduction Zone from continent-scale teleseismic S-wave tomography by Rodríguez, Emily E, Portner, Daniel Evan, Beck, Susan L, Rocha, Marcelo P, Bianchi, Marcelo B, Assumpção, Marcelo, Ruiz, Mario, Alvarado, Patricia, Condori, Cristobal, Lynner, Colton

“…SUMMARY The Andean Subduction Zone is one of the longest continuous subduction zones on Earth. The relative simplicity of the two-plate system has makes it an…”
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Validation of Ps‐P Tomography for Obtaining 3D Crustal VP/VS With Small‐N Data Sets: An Application to the Mount St. Helens Magmatic System by Portner, Daniel Evan, Delph, Jonathan R., Kiser, Eric, Abers, Geoffrey A., Levander, Alan, Pang, Guanning

“…The high sensitivity of VP/VS to the presence of melt makes images of VP/VS structure particularly useful in magmatic systems, but detailed three‐dimensional…”
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Detailed Structure of the Subducted Nazca Slab into the Lower Mantle Derived From Continent‐Scale Teleseismic P Wave Tomography by Portner, Daniel Evan, Rodríguez, Emily E., Beck, Susan, Zandt, George, Scire, Alissa, Rocha, Marcelo P., Bianchi, Marcelo B., Ruiz, Mario, França, George Sand, Condori, Cristobal, Alvarado, Patricia

“…Nazca subduction beneath South America is one of our best modern examples of long‐lived ocean‐continent subduction on the planet, serving as a foundation for…”
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Variability in Slab Structure and Behavior Within and Among the South American and Eastern Mediterranean Subduction Systems by Portner, Daniel Evan

“…As subduction science advances, it is becoming increasingly clear that the conventional model of subduction driven by cold, strong, dense slabs sinking…”
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