GEOPHYSICS | SEISMOLOGY | EARTH STRUCTURE

Global background seismicity since 1990 and great circle paths for 150 earthquakes >M5.5 recorded at the NoMelt OBS array in 2012.

Publications

(2020). Seismic observations, numerical modeling, and geomorphic analysis of a glacier lake outburst flood in the Himalayas. Science Advances.

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(2020). Thermo‐chemical modification of the Upper Mantle beneath the Northern Malawi Rift Constrained from Shear Velocity Imaging. Geochemistry, Geophysics, Geosystems.

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(2020). Non-Double-Couple Components of the Moment Tensor in a Transversely Isotropic Medium. Bulletin of the Seismological Society of America.

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(2020). Shear Attenuation and Anelastic Mechanisms in the Central Pacific Upper Mantle. Earth & Planetary Science Letters.

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(2019). OBSrange: A New Tool for the Precise Remote Location of Ocean-Bottom Seismometers. Seismological Research Letters.

PDF Code Dataset DOI

(2019). High-Resolution Constraints on Pacific Upper Mantle Petrofabric Inferred From Surface-Wave Anisotropy. Journal of Geophysical Research: Solid Earth.

PDF Code Dataset DOI

Selected Talks & Posters

More Talks

Combining P and S constraints in the shallow lithosphere, we provide a first in-situ constraint on olivine fabric type in the oceanic …

Seismic anisotropy beneath the YoungORCA ocean-bottom array reveals small-scale asthenospheric flow patterns due to the Pacific …

Surface-wave anisotropy at the Eastern North American Margin shows margin-parallel anisotropy in the lithosphere, suggesting shallow …

Code

Reproducibility in science relies on open-source software. I have been involved in several projects providing community tools. Listed here are a few that I use on a regular basis for surface-wave measurements & imaging, ocean-bottom seismic data processing, anelastic modeling, and more.

OBSrange

Tool for accurately locating OBS on the seafloor using acoustic ranging data

Simple_X

A seismologist-friendly Matlab wrapper for the thermodynamic tool Perple_X that estimates Vp and Vs for a desired composition

MATnoise

Calculate ambient noise empirical Green’s functions and measure phase velocities

mat-LRTdisp

Measure multimode phase velocity dispersion using the Linear Radon Transform

MINEOS_synthetics

Calculate synthetic seismograms for layered Earth models using the mode summation code MINEOS. Also outputs dispersion curves, sensitivity kernels, and eigenfunctions

invSWani-GBHE

Invert anisotropic phase velocities for anisotropy depth functions G, B, H, and E

ASWMS-ani

Automated Surface-Wave Measurement System of Jin & Gaherty (2015), adapted for azimuthal anisotropy.

ATaCR

Automated Tilt and Compliance Removal to clean OBS data.

VBR

The Very Broadband Rheology calculator estimates mechanical behavior of olivine on timescales ranging from elastic to fully viscous.

GitHub Contributions

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Photography

Getting out from behind the computer…