| Title | Deep source model for Nevado del Ruiz Volcano, Colombia, constrained by interferometric synthetic aperture radar observations |
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| Author | Lundgren, P; Samsonov, S V ; Lopez Velez, C M; Ordonez, M |
| Source | Geophysical Research Letters vol. 42, 2015 p. 4816-4823, https://doi.org/10.1002/2015GL063858  Open Access |
| Image |  |
| Year | 2015 |
| Alt Series | Natural Resources Canada, Contribution Series 20170203 |
| Publisher | Wiley-Blackwell |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Area | Nevado del Ruiz; Andes; Colombia |
| Lat/Long WENS | -75.5000 -75.1667 5.0000 4.5500 |
| Subjects | volcanic features; volcanoes; deformation; remote sensing; radar imagery; sills; dykes; RADARSAT-2 |
| Illustrations | satellite images; location maps; graphs; histograms |
| Released | 2015 06 24 |
| Abstract | Nevado del Ruiz is part of a large volcano complex in the northern Andes of Colombia. Interferometric synthetic aperture radar observations from the RADARSAT-2 satellite since 2011 show steady inflation
of the volcano since 2012 at 3–4?cm/yr. The broad (>20?km) deformation pattern from both ascending and descending track data constrain source models for either point or spheroidal sources, both located at >14?km beneath the surface (mean elevation
4.2?km) and 10?km SW of Nevado del Ruiz, below nearby Santa Isabel Volcano. Stress change computations for both sources in the context of a compressive regional stress indicate that dikes propagating from the source should become trapped in sills,
possibly leading to a more complex pathway to the surface and explaining the significant lateral separation of the source and Nevado del Ruiz Volcano. |
| GEOSCAN ID | 305973 |
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