As we work together to establish a vision for a comprehensive geophysical observatory beyond 2023, we recognize the importance of demonstrating the success of our collaboration now and in the past. The UNAVCO operated GAGE facility and the SAGE facility operated by IRIS comprise future components of The EarthScope Consortium, Inc.
Project Overview Florida coastal communities are periodically subjected to flooding events, which are induced by heavy rain, high tide, and storm surge. Over the past decade several coastal communities have experienced an increase in flooding frequency, causing significant impacts to property, commerce, and overall quality of life. Shimon Wdowinski’s recent study of Miami Beach flooding … Continued
Project Overview Ol Doinyo Lengai, a frequently active volcano in northern Tanzania, is instrumented with a real-time GNSS network to understand transient behavior and the relationship between volcanism and rifting. The data are telemetered to UNAVCO and then distributed free with open access through the UNAVCO Data Archive as well as the Tanzania Volcano Observatory … Continued
Project Overview Farming in coastal Bangladesh relies on polders, low-lying tracts of land enclosed by earthen embankments that protect the land from tidal surges. In a dynamic deltaic environment and a changing climate, the polders are under threat. Factors influencing long-term stability of polders include subsidence, sedimentation, river migrations, flooding, storm surges, and sea level … Continued
Project Overview Fieldwork in Nicaragua conducted in early February 2020 supported three different projects funded by NSF and NASA, as noted above. The work involved setting up GPS equipment for campaign surveys (eGPS), installing new campaign monuments, repairing continuous GPS stations (cGPS), installing a new cGPS station, installing a gas sensor on Masaya volcano, UAS … Continued
Project Overview From the NSF award abstractThe great earthquakes and tsunamis of 2004 (Sumatra) and 2011 (Japan) were wake-up calls that our forecasting skill for these catastrophic events remains poor. Measurement of the slow motions of the Earth’s surface near active faults could help to forecast the location and the size of future earthquakes. This … Continued
Trinidad and Tobago Neotectonics and Seismic Hazard from Geodesy Overview The rich and varied landscapes and geology of Trinidad and Tobago, a twin-island nation in the southeast Caribbean, reflect a complex, multi-phase tectonic history. Trinidad-Tobago makes up the eastern part of the southern Caribbean orogen, a range of coastal collisional mountains that rim northern South … Continued
Overview GPS/GNSS station P438 is located on Northwest Island, a small uninhabited island adjacent to Fidalgo Island in the Puget Sound. The site is in a prime location to capture episodic tremor and slip data and monitor ongoing plate deformation in the Cascadia subduction zone. Yet site access is tricky: P438 is only accessible via … Continued
Delta Sites How do you install a GPS station in a marsh? How about three all in the same place? Installation of the Myrtle Grove subsidence superstation began in August 2016, but planning began well beforehand. The array of three co-located stations in Myrtle Grove, Louisiana, posed particular challenges, as the instruments were installed in … Continued
Summary of Work Continuing previous work in Bangladesh, Michael Steckler (LDEO) and Keith Williams (UNAVCO) arrived back in Myanmar in late October of 2018 to begin the installation of five additional cGPS sites with collaborators. The larger project entails installation of a transect of cGPS stations and seismometers spanning Bangladesh, India, and Myanmar (see previous Tripartite … Continued