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Adrian Borsa, UC San Diego- Drought to Storm: Hydrological Applications of Geodetic Observations

Thursday, Oct 22, 2020 12:00 PM
Where: Passcode: 840912
General Public
Geophysics Department

Adrian Borsa

Institute of Geophysics & Planetary Physics, UC San Diego

From Drought to Storm: Hydrological Applications of Geodetic Observations of Earth Deformation

Recent studies using continuous GNSS to estimate changes in terrestrial water storage point to a future where the global infrastructure for monitoring crustal deformation can be leveraged for hydrological applications.  Seasonal water and snow loading have long been known to generate an elastic earth response that is observable by GNSS, but only recently have GNSS displacements been modeled to recover the underlying changes in water storage.  GNSS is also being used over longer periods to monitor surface deformation due to the response of the hydrological system to drought, and to estimate the accompanying water loss.  The latest applications of these techniques focus on the impact of individual storms, from hurricanes to atmospheric rivers.  Analysis of daily ground motions reveals the distribution of surface water changes from short-lived hydrometeorological phenomena and illustrates both the promise and challenge of pushing geodetic techniques to ever shorter timescales. Passcode: 840912



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