Project Overview In 21 days, UNAVCO field engineer Mike Fend, Kendall Wnuk of Penn State University, and Allan Morales of INETER visited three active volcanoes and 25 GPS stations. This tally includes both COCONet stations and stations in local volcanic networks in Nicaragua. By air and ground, the team performed maintenance on 15 telemetered cGPS … Continued
Project Overview Determining how the Caribbean plate moves with respect to the neighboring North America and South America plates has been a major challenge. Geologic plate motion models using seafloor magnetic anomaly rates, transform fault azimuths, and slip vectors are challenging due to sparse data. The only rates come from the Cayman Spreading Center, and … Continued
Project Overview UNAVCO engineers in collaboration with the City of Sitka installed station AKSI in Sitka, Alaska, on the historical Sitka Post Office. The station is part of the National Geodetic Survey (NGS) CORS network that provides GNSS data in support of three-dimensional positioning, meteorology, space weather, and geophysical applications. Surveyors, GIS users, engineers, scientists, … Continued
Project Overview The 2015 season in Alaska was defined by resource sharing and cooperative work with a number of agencies. The largest collaborative effort was a week-long project based in Homer, Alaska with work on and around Augustine volcano. UNAVCO PBO field engineers worked with staff from the USGS Alaska Volcano Observatory (AVO) and IRIS, … Continued
Project Overview Geodetic measurements with GNSS are a prime example of an observational data set that becomes far more valuable when scientists can access data without regard to national boundaries. Many governmental and research organizations are increasingly setting up GNSS stations worldwide, and are often open to sharing these data but lack the resources or … Continued
Project Overview Just before noon local time on April 25, 2015 at 11:56 am, a moment magnitude (Mw) 7.8 earthquake struck central Nepal and was felt in the capital, Kathmandu. Please see the U.S. Geological Survey (USGS) summary and Nepal’s National Seismological Centre summary of the Gorkha earthquake for more information about the event and aftershocks. Hours after the … Continued
Project Overview Determining how the Caribbean plate moves with respect to the neighboring North America and South America plates has been a major challenge. Geologic plate motion models using seafloor magnetic anomaly rates, transform fault azimuths, and slip vectors are challenging due to sparse data. The only rates come from the Cayman Spreading Center, and … Continued
Project Overview Despite day after day of rain in California’s drought, 15 students of various majors are traipsing around the desert in Indiana University’s Volcanoes of the Eastern Sierra intro-level field course. The course is led by UNAVCO community member Michael Hamburger and is still going strong after 13 years. UNAVCO supports the class with … Continued
Project Overview Between December 2014 and February 2015, UNAVCO installed 10 accelerometers at existing Plate Boundary Observatory (PBO) GPS sites in the San Francisco Bay Area. Accelerometers in combination with high-precision GPS data provide a new interdisciplinary data type: full spectrum displacements based on an optimal combination of geodetic and seismic data. These can significantly … Continued
Project Overview Determining how the Caribbean plate moves with respect to the neighboring North America and South America plates has been a major challenge. Geologic plate motion models using seafloor magnetic anomaly rates, transform fault azimuths, and slip vectors are challenging due to sparse data. The only rates come from the Cayman Spreading Center, and … Continued