Eric Sandvol
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View article: Estimating site amplification variability in Yangon, Myanmar, from a dense nodal seismic array
Estimating site amplification variability in Yangon, Myanmar, from a dense nodal seismic array Open
We explore a novel acquisition geometry that can be used to estimate the linear component of site amplification using a dense nodal seismic network installed in Yangon, Myanmar’s largest city. The city is surrounded by several seismically …
View article: Evolving Sediment Structure and Lithospheric Architecture Across the Indo‐Burman Forearc Margin From the Joint Inversion of Surface‐ and Scattered‐Wave Seismic Constraints
Evolving Sediment Structure and Lithospheric Architecture Across the Indo‐Burman Forearc Margin From the Joint Inversion of Surface‐ and Scattered‐Wave Seismic Constraints Open
The Indo‐Burman subduction zone represents a global endmember for extreme sediment accretion and is a region characterized by ambiguous tectonic structure. The recent collection of broadband seismic data across the Indo‐Burman accretionary…
View article: A slab’s journey from subduction to collision: Lithospheric structure of Myanmar from finite-frequency tomography
A slab’s journey from subduction to collision: Lithospheric structure of Myanmar from finite-frequency tomography Open
Myanmar is located south of the Eastern Himalayan Syntaxis, where tectonic activity is driven by the northward indentation of the Indian Plate into Asia and the oblique eastward subduction of India beneath the western margin of the Burmese…
View article: Super-adiabatic asthenosphere in southeast Asia - its tectonic and magmatic implications
Super-adiabatic asthenosphere in southeast Asia - its tectonic and magmatic implications Open
Southeast Asia is surrounded by active subduction zones and has a complex tectonic history. It hosts the Indo China block in the west and the South China Sea in the east. Cenozoic intraplate volcanic activity widely spans the Indo China bl…
View article: Dynamically Triggered Tectonic Tremors and Earthquakes in the Caucasian Region Following the 2023 Kahramanmaraş, Türkiye, Earthquake Sequence
Dynamically Triggered Tectonic Tremors and Earthquakes in the Caucasian Region Following the 2023 Kahramanmaraş, Türkiye, Earthquake Sequence Open
Deep tectonic tremor has been observed along major subduction zones and several continental strike‐slip faults around the Pacific Rim and the Caribbean. However, it has not be widely identified in other tectonically active regions such as …
View article: The Seismic Expression and Tectonomagmatic Evolution of Subduction Termination along the Anatolian Margin 
The Seismic Expression and Tectonomagmatic Evolution of Subduction Termination along the Anatolian Margin  Open
The geological expression of subduction termination is poorly understood due to overprinting during the collisional stage of the Wilson Cycle. The Anatolian domain of the eastern Mediterranean represents a modern system where spatial varia…
View article: Frequency dependent Lg and Pg wave attenuation in western Tibet
Frequency dependent Lg and Pg wave attenuation in western Tibet Open
Frequency-dependent Lg and Pg attenuation models are studied beneath western Tibet and regions surrounding it to understand the lateral variations in rheology of the crust. We have considered different frequency ranges of 0.2 to 0.6 Hz, 0.…
View article: Compilation of a Comprehensive Earthquake Catalog and Relocations in the Caucasus Region
Compilation of a Comprehensive Earthquake Catalog and Relocations in the Caucasus Region Open
Instrumental seismic monitoring has a long history in the Caucasus and started in 1899 when the first seismograph was installed in Tbilisi, Georgia. Much of the analog paper records from this time period are preserved in the Tbilisi archiv…
View article: Sensor orientation of the TMD seismic network (Thailand) from P-wave particle motions
Sensor orientation of the TMD seismic network (Thailand) from P-wave particle motions Open
The Thai Meteorological Department (TMD) seismic network began development in 2008. There are a total of 71 seismic stations consisting of 26 borehole stations and 45 surface stations currently installed. The three-component data from the …
View article: Frequency dependent attenuation and relative site response of western Tibet
Frequency dependent attenuation and relative site response of western Tibet Open
We have formulated frequency dependent Lg and Pg attenuation tomographic models to investigate thecrustal Q values and its tectonic implications beneath western Tibet. The frequency dependentbehaviour of both Lg and Pg are studied for the …
View article: Sensor Orientation of the TMD Seismic Network (Thailand) from P-Wave Particle Motions
Sensor Orientation of the TMD Seismic Network (Thailand) from P-Wave Particle Motions Open
The Thai Meteorological Department (TMD) seismic network began development in 2008. Currently there are a total of 71 seismic stations consisting of 26 borehole stations and 45 surface stations currently installed. The three-component data…
View article: Seismic attenuation tomography of the Sn phase beneath the Turkish-Iranian Plateau and the Zagros mountain belt
Seismic attenuation tomography of the Sn phase beneath the Turkish-Iranian Plateau and the Zagros mountain belt Open
The Turkish-Iranian Plateau and the Zagros highlands are among the most prominent physiographic features in the Middle East and were formed as a result of continental collision between the Arabian and Eurasian plates. To better understand …
View article: Seismotectonic evidence for subduction beneath the Eastern Greater Caucasus
Seismotectonic evidence for subduction beneath the Eastern Greater Caucasus Open
SUMMARY We generated high-resolution 3-D seismic velocity models as well as a relocated earthquake catalogue across the eastern Greater Caucasus and Kura basins. This work was done using data from the recently upgraded Republic Seismologic…
View article: Structure of the crust and African slab beneath the central Anatolian plateau from receiver functions: New insights on isostatic compensation and slab dynamics
Structure of the crust and African slab beneath the central Anatolian plateau from receiver functions: New insights on isostatic compensation and slab dynamics Open
The central Anatolian plateau in Turkey is a region with a long history of subduction, continental collision, accretion of continental fragments, and slab tearing and/or breakoff and tectonic escape. Central Anatolia is currently character…
View article: Crustal and uppermost mantle shear wave velocity structure beneath the Middle East from surface wave tomography
Crustal and uppermost mantle shear wave velocity structure beneath the Middle East from surface wave tomography Open
SUMMARY We have constructed a 3-D shear wave velocity (Vs) model for the crust and uppermost mantle beneath the Middle East using Rayleigh wave records obtained from ambient-noise cross-correlations and regional earthquakes. We combined on…
View article: Seismic anisotropy of the upper mantle beneath Thailand:Tectonic setting constrained by shear-wave splitting analysis
Seismic anisotropy of the upper mantle beneath Thailand:Tectonic setting constrained by shear-wave splitting analysis Open
The tectonic setting of the lithosphere and upper mantle underneath Thailand varies and changes substantially over short distances. We have mapped these variations using shear wave splitting (SWS) analysis. We have determined the shear wav…
View article: Depth-dependent<i>Pn</i>velocities and configuration of Indian and Asian lithosphere beneath the Tibetan Plateau
Depth-dependent<i>Pn</i>velocities and configuration of Indian and Asian lithosphere beneath the Tibetan Plateau Open
Using Pn-wave traveltimes from three regional distance ranges we generated Pn tomography models to investigate the 3-D nature of the uppermost mantle lid P-wave velocity structure beneath the Tibetan Plateau and surrounding regions. Signif…
View article: Mantle Transition Zone Thickness Beneath the Middle East: Evidence for Segmented Tethyan Slabs, Delaminated Lithosphere, and Lower Mantle Upwelling
Mantle Transition Zone Thickness Beneath the Middle East: Evidence for Segmented Tethyan Slabs, Delaminated Lithosphere, and Lower Mantle Upwelling Open
We use a very large seismic data set to provide a comprehensive image of the mantle transition zone (MTZ) beneath the Middle East. We utilized the technique of Common Conversion Point stacking of P wave receiver functions to investigate th…
View article: Subduction termination through progressive slab deformation across Eastern Mediterranean subduction zones from updated P-wave tomography beneath Anatolia
Subduction termination through progressive slab deformation across Eastern Mediterranean subduction zones from updated P-wave tomography beneath Anatolia Open
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 depth that reveals the structure and behavior of the sub-ducting African lithosph…
View article: Supplemental material: The effects of subduction termination on the continental lithosphere: Linking volcanism, deformation, surface uplift, and slab tearing in central Anatolia
Supplemental material: The effects of subduction termination on the continental lithosphere: Linking volcanism, deformation, surface uplift, and slab tearing in central Anatolia Open
Geosphere, December 2017, v. 13, p. 1788-1805, doi:10.1130/GES01478.1, Supplemental Figures. (1) Checkerboard test for 1 × 1 degree anomalies; (2) crustal thickness map of Anatolia used to generate starting model of phase velocities for tw…
View article: Supplemental material: Structure of the crust and African slab beneath the central Anatolian plateau from receiver functions: New insights on isostatic compensation and slab dynamics
Supplemental material: Structure of the crust and African slab beneath the central Anatolian plateau from receiver functions: New insights on isostatic compensation and slab dynamics Open
Geosphere, December 2017, v. 13, p. 1774-1787, doi:10.1130/GES01509.1, Supplemental File. Results of the receiver function analysis for each individual station.
View article: Structure of the crust and African slab beneath the central Anatolian plateau from receiver functions: New insights on isostatic compensation and slab dynamics
Structure of the crust and African slab beneath the central Anatolian plateau from receiver functions: New insights on isostatic compensation and slab dynamics Open
The central Anatolian plateau in Turkey is a region with a long history of subduction, continental collision, accretion of continental fragments, and slab tearing and/or breakoff and tectonic escape. Central Anatolia is currently character…
View article: The effects of subduction termination on the continental lithosphere: Linking volcanism, deformation, surface uplift, and slab tearing in central Anatolia
The effects of subduction termination on the continental lithosphere: Linking volcanism, deformation, surface uplift, and slab tearing in central Anatolia Open
Subduction beneath central Anatolia represents the transition between continuous subduction along the Aegean trench in the west and slab break-off and/or subduction termination at the Arabian-Eurasian collision zone in the east. Using rece…
View article: Lg attenuation, frequency dependence and relative site response of the western United States as revealed by the EarthScope Transportable Array
Lg attenuation, frequency dependence and relative site response of the western United States as revealed by the EarthScope Transportable Array Open
Lg attenuation of the western United States is estimated using regional waveforms recorded by EarthScope's Transportable Array, the Berkeley Digital Seismograph Network and the Caltech Regional Seismic Network. Lg attenuation is determined…
View article: Moment Magnitudes of Local/Regional Events from 1D Coda Calibrations in the Broader Middle East Region
Moment Magnitudes of Local/Regional Events from 1D Coda Calibrations in the Broader Middle East Region Open
Reliable moment magnitude estimates for seismic events in the Middle East region can be difficult to obtain due to the uneven distribution of stations, the complex tectonic structure, and regions of high attenuation. In this paper, we take…
View article: The crustal structure of south central Mongolia using receiver functions
The crustal structure of south central Mongolia using receiver functions Open
The crustal thickness H and average crustal velocity ratio k (Vp/Vs) beneath south central Mongolia are investigated using the H-k stacking method based on teleseismic radial receiver functions. Our primary results reveal that the local cr…
View article: Crustal structures across the western Weihe Graben, North China: Implications for extrusion tectonics at the northeast margin of Tibetan Plateau
Crustal structures across the western Weihe Graben, North China: Implications for extrusion tectonics at the northeast margin of Tibetan Plateau Open
The stable Ordos Plateau, extensional Weihe Graben, and Qinling orogenic belt are located at the northeast margin of the Tibetan Plateau. They have been thought to play different roles in the eastward expanding of the Tibetan Plateau. Peki…