Vent opening maps dataset for Long Valley volcanic region
25 Apr 2019 | Contributor(s): Andrea Bevilacqua, Marcus I Bursik, Abani Patra, E Bruce Pitman, Ryan Till
FILE - VOmaps.zipRandom instances of vent opening map probability distributions for the Long Valley volcanic region, according to the combined statistical model in:Bevilacqua, A., M. Bursik, A. Patra, E. B. Pitman, and R. Till (2017) Bayesian construction of a long-term vent opening...
Updated version of an algorithm for tephra isopach, extent and volume calculation in R
18 Oct 2016 | Contributor(s): Marcus I Bursik, Qingyuan Yang
We have updated an algorithm that aids in isopach construction, and volume and extent calculation of tephra fall deposits. The program is written in R. Documentation has been improved, and we now include example datasets for the North Mono eruption and Fogo A. The algorith and...
Uncertainty Workshop: Deadline Approaching
01 Feb 2019 | Contributor(s): Marcus I Bursik
Coupling Uncertain Geophysical Hazards WorkshopMarch 24-26, 2019James B. Hunt Library, North Carolina State University, Raleigh, NCDescription: Scientists are beginning to understand the propagation of uncertainty through mathematical models, to enable predictions of the likely...
Tephra isopach, extent and volume calculation in R
04 Mar 2016 | Contributor(s): Qingyuan Yang, Marcus I Bursik
The method presented here is used to interpolate the thickness distribution of tephra fall deposits from point measurements. It first reconstructs the general thickness decay pattern, or "trend," and then models the residuals that cannot be explained by the trend with...
Tephra inversion with Tephra2 and the Metropolis-Hastings algorithm
21 Jun 2020 | Contributor(s): Qingyuan Yang, E Bruce Pitman, Marcus I Bursik, Susanna Jenkins
We couple the Metropolis-Hastings algorithm (Hastings, 1970) with the volcanic ash transport model Tephra2 (Bonadonna et al, 2005; 2010), and present the coupled algorithm as a new method to estimate the Eruption Source Parameters (ESPs) of volcanic eruptions based on mass per unit area...