Articles

PBO station Highlight

Triangulation Point, Oregon


2016-10-10

PBO Station P405 battles the elements at an energetic plate boundary
STEM Festival in Washington DC

Getting Hands On With EarthScope


2016-10-10

By ESNO - Spring 2016

"Wow, it's moving!" was called out frequently in the busy hall that housed the largest (and free!) national science festival. More than 365,000 people of all ages and

PBO AC55 station

Creeping Calamity


2016-09-20

Using the Plate Boundary Observatory to monitor landslide motion. GPS Station AC55 in Alaska was moving more than expected. Some movement was normal due to tectonic plate movement and residual motion from previous earthquakes—other GPS stations...
Aurora

A Magnetic Meeting of Space and Earth


2016-09-20

Magnetic storms, triggered by the interaction of the solar wind with Earth’s magnetosphere, not only produce our aurora light shows, but can also induce electric fields in our planet’s subsurface.
USA Festival

Summer 2016 Education Corner


2016-09-20

Over the years, an array of tools, modules, and activities applying EarthScope scientific data have been developed for a wide variety of users. K–12 and university educators, or informal programs like museums, can benefit from these resources.
Teleseismic P-wave cross-section (Humphreys et al., 2015), with Rayleigh wave image of crust (Shen et al., 2013). Wyoming high-velocity mantle extends to ~300 km.

Recent Craton Growth by Under-accreting an Ocean Plateau Beneath Wyoming


2016-09-20

Science Nugget - By Eugene Humphreys (University of Oregon Eugene) and Robert van der Hilst (MIT) - NSF # EAR 952194 | 2010-2012

Seismic tomography images high-velocity…

Earthscope Globe

Crustal Strength Profiles Across the Brittle-Ductile Transition


2016-09-20

Science Nugget - By John Platt (University of Southern California) and W. M. Behr (University of Texas Austin) - NSF EAR # 0809443 | 2008-2012 

In this project we…

Vertical velocities predicted by model selection (statistical, s-model) using GPS data and the best-fitting physical deformation model (p- model) simulating the vertical crustal response of earthquake cycle loading at depth throughout the past 300 or more years.

The Vertical Fingerprint of Earthquake Cycle Loading in Southern California


2016-09-19

Science Nugget - By Bridget Smith-Konter (University of Hawaii at Manoa), David Sandwell (Scripps Institution of Oceanography), Xiaopeng Tong (University of Washington…

Sliced view of present-day (calendar year 2011) Coulomb stress accumulation model of the San Andreas Fault System based on interseismic stress accumulation rate model.

Locked, Loaded and Looming?


2016-09-19

Exploring earthquake cycle stress history of seismically active faults of the San Andreas Fault System
Figure 1. About 16,000 pairs of shear wave splitting parameters in the study area. The orientation of the red bars represents the fast polarization direction, and the length is proportional to the splitting time (Liu et al., 2014).

Mantle Anisotropic Structure and Dynamics Beneath the Western United States


2016-09-19

Constraints from Shear-wave Splitting Analysis