Volcano geodesy: A critical tool for assessing the state of volcanoes and their potential for hazardous eruptive activity

Poland, Michael P.; Dalfsen, Elske de Zeeuw‐van

doi:10.1016/b978-0-12-818082-2.00003-2

Cited by 6 publications

(2 citation statements)

References 117 publications

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“…This flat summit is likely the result of interpolation over gaps created by shadow and signal overlay areas in the TSX data used. When georeferencing, this discrepancy causes the deformation signal to appear stretched and greatest on the eastern edge of the crater floor (Figure 5c), similar to the deformation signal shown in Poland et al (2020) and Poland and de Zeeuw-van Dalfsen (2021). In reality, the deformation signal is greatest in the center of the crater floor and is bounded to the west by the crater walls (Figure 5d).…”

Section: Influence Of Dem Accuracymentioning

confidence: 77%

High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia

et al. 2023

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Localized deformation at volcanoes is caused by shallow processes including magma movement, pressurization of a hydrothermal system, or instability of the edifice, and is often observed shortly before or during an eruption (Cassidy et al., 2019). Thus, observing localized deformation is critical for understanding the final stages of magma ascent and eruption forecasting. However, sufficiently frequent and dense spatial observations are rarely available from ground-based instrument networks. High-resolution Interferometric Synthetic Aperture Radar (InSAR) can achieve <1 m spatial resolution and sub-weekly observations (e.g., COSMO-Skymed (CSK) (Italiana, 2007), TerraSAR-X (TSX) (Mittermayer et al., 2014), and ICEYE (Ignatenko et al., 2020)), making it an excellent tool for the detection, monitoring, and understanding of localized volcano deformation. For example,

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Section: Influence Of Dem Accuracymentioning

confidence: 77%

High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia

et al. 2023

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“…Natural processes such as volcanic activity produce surface displacements due to many phenomena, including magma recharge/deployment and migration, fluid flow, and other internal processes related to magma crystallization and degassing. Volcano geodesy is crucial to define the state of volcanoes (Poland and de Zeeuw-van Dalfsen, 2021) and for eruptive hazard assessment (Sparks et al, 2012;Biggs et al, 2014). The accurate measurement of surface deformation is one of the most relevant parameters to estimate tectonic stress accumulation and release (DeMets et al, 1990) for studying the seismic cycle (Wright et al, 2004;Weston et al, 2011) and the intraplate coupling (Hashimoto et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Volcanic and Seismic Source Modeling: An Open Tool for Geodetic Data Modeling

Trasatti

2022

Front. Earth Sci.

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Volcanic and Seismic source Modeling (VSM) is an open-source Python tool to model ground deformation. VSM allows the user to choose one or more deformation sources of various shapes as a forward model among sphere, spheroid, ellipsoid, rectangular dislocation, and sill. It supports multiple datasets from most satellite and terrestrial geodetic techniques: Interferometric SAR, GNSS, leveling, Electronic Distance Measurements, tiltmeters, and strainmeters. Two sampling algorithms are available: one is a global optimization algorithm based on the Voronoi cells and yields the best-fitting solution and the second follows a probabilistic approach to parameters estimation based on the Bayes theorem and the Markov chain Monte Carlo method. VSM can be executed as Python script, in Jupyter Notebook environments, or by its Graphical User Interface. Its broad applications range from high-level research to teaching, from single studies to near real-time hazard estimates. Potential users range from early-career scientists to experts. It is freely available on GitHub (https://github.com/EliTras/VSM) and is accompanied by step-by-step documentation in Jupyter Notebooks. This study presents the functionalities of VSM and test cases to describe its use and comparisons among possible settings.

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Remote Sensing of Volcano Deformation and Surface Change

Poland

2024

Remote Sensing for Characterization of Geohazards and Natural Resources

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Volcano geodesy: A critical tool for assessing the state of volcanoes and their potential for hazardous eruptive activity

Cited by 6 publications

References 117 publications

High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia

High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia

Volcanic and Seismic Source Modeling: An Open Tool for Geodetic Data Modeling

Remote Sensing of Volcano Deformation and Surface Change

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