2019-02-14Geodesy is the science of measuring the size, shape, and gravity field of Earth, and how these change with time.
2019-02-14The USArray has operated for over 15 years as a community science facility designed to address EarthScope’s goal of understanding the structure and evolution of the North American continent.
2018-08-31New ocean-bottom seismometers complement the Transportable Array
2018-08-31What causes earthquakes in the interior of North America, far from plate boundaries?
2018-05-04PBO station P496 not only shook during the 7.2 El Mayor–Cucapah earthquake in northwestern Mexico, but moved permanently as a result of it.
Elliot Wilson of Pioneer Earthworks operates the drill at Alaska Transportable Array station D27M. Photo by Max Enders, IRIS.
by Andy Frassetto and Kasey Aderhold, IRIS - NSF # SAGE: 1261681, MRI-R2: 0960275 | Summer 2017
Observations of infrasonic signals have…
2017-05-05A new online course connects teachers across Alaska to real-time seismic data
By Justin Sweet - Winter 2016
Canada’s Yukon and Northwest Territories are not known as hospitable land. This sub-arctic region, home to the Mackenzie Mountains project, presented
By Doerte Mann and Beth Bartel - Spring 2015
One of the major benefits of the Plate Boundary Observatory (PBO) is its contribution to prototype Earthquake Early Warning systems (EEW).
By Andy Frassetto, IRIS - Spring 2015
In the fall of 2003, before EarthScope began, approximately 200 modern broadband seismic stations operated across the contiguous United States,
By Perle Dorr, IRIS - Summer 2014
Since the completion of the Transportable Array in the Lower 48 during fall 2013, USArray has focused on the creation of the Central and Eastern US
By Perle Dorr, IRIS - Spring 2014
The National Science Foundation is funding the creation of a Central and Eastern US Network (CEUSN) for the purpose of obtaining long-…
By Ellie Boyce - Summer 2014
With high-elevation GPS stations melting out of the snow and the weather becoming milder, the PBO Alaska region began annual helicopter-based…
By Maureen Long and Vadim Levin - Winter 2014
On October 1st 2013 the seismic and magnetotelluric observatory network USArray, which is a key element of the EarthScope…
By IRIS - Fall 2013
Ten years ago, the construction of USArray observatories officially began. This followed numerous community meetings, countless hours of meticulous…
Terry Pavlis, UTEP - Spring 2013
On February 19 and 20 approximately 50 geoscientists met at the Pacific Geoscience Center in Sydney, British Columbia, to discuss…
By Manochehr Bahavar and Chad Trabant - Summer 2013
Diverse natural and man-made acoustic sources such as large explosions, rocket launches, and meteorites can act as…
By Glen Mattioli, UNAVCO - Fall 2012
Currently, there are 1120 GPS sites and 28 tilt meters, as well as numerous other strainmeters actively measuring deformation. In…
Max Enders - Spring 2012
When UNAVCO set about building the Earthscope Plate Boundary Observatory (PBO) no challenge was nearly as daunting as the prospect of installing…
The Transportable Array (TA) continues to roll eastward across the US. Having crossed the Mississippi River in March 2011, the TA will…