Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/153455
Title: Statistical analysis of crystal populations and links to volcano deformation for more robust estimates of magma replenishment volumes
Authors: Cheng, Lilu
Costa, Fidel
Keywords: Science::Geology
Issue Date: 2019
Source: Cheng, L. & Costa, F. (2019). Statistical analysis of crystal populations and links to volcano deformation for more robust estimates of magma replenishment volumes. Geology, 47(12), 1171-1175. https://dx.doi.org/10.1130/G46826.1
Project: NRF-NRFI2017-06 
Journal: Geology 
Abstract: Forecasting the timing and size of volcanic eruptions requires a proper interpretation of multiparametric monitoring signals. Studies of the erupted rocks can provide critical information on the processes and volcano plumbing system that is needed to decode the monitoring signals. Here we present the results of a petrological study of plagioclase phenocrysts using a new statistical approach that allows us to estimate the amount of intruded magma before eruption. Our crystal population analysis of the 2006 and 2010 CE Merapi volcano (Indonesia) eruptions shows that ~60 ± 20 vol% of the 2010 magma was left over from the 2006 magma, and thus ~40 ± 20 vol% was newly intruded magma. Using the published values of the 2010 erupted magma volume, this corresponds to >8 to 20 (±7) x 106 m3 of new magma. This is a minimum estimate and is similar to the inferred pre-eruptive deformation volume (18 x 106 m3), although given the uncertainties, several million cubic meters of magma intruded in 2010 could still be in the Merapi plumbing system. Our approach could be used at other volcanoes to quantify the volume of intruded magma and thus help in better understanding the unrest signals that anticipate eruptions.
URI: https://hdl.handle.net/10356/153455
ISSN: 0091-7613
DOI: 10.1130/G46826.1
DOI (Related Dataset): 10.21979/N9/TEGP3K
Rights: © 2019 The Authors. Gold Open Access: This paper is published under the terms of the CC-BY license.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ASE Journal Articles
EOS Journal Articles

Files in This Item:
File Description SizeFormat 
1171.pdf951.97 kBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 20

4
Updated on Dec 27, 2021

PublonsTM
Citations 20

4
Updated on Dec 27, 2021

Page view(s)

11
Updated on Jan 17, 2022

Download(s)

1
Updated on Jan 17, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.